Evaluate the expression −x^2 + 2x-7 when X=-4

Answers

Answer 1
you first put -4 into the x spots

-(-4)^2+2(-4)-7
-16-8-7
=-31

Related Questions

gerry withdraws all the principal and interest after the first year and deposits it into another one year account at the same rate. what will his interest be for the second year? d. what will his balance be after two years ?

Answers

a. Interest of the first year = $26.93

b. Balance after the first year = $1256.93

c. Interest for the second year = $27.52

d. Balance after the second year = $1284.45

Although a part of your question is missing, you might refer to this full question: Gerry deposited $1230 in an account that pays 2.19% simple interest for one year.

a. How much interest will he earn in one year?

b. What will be his balance after one year?

c. Gerry withdraws all of the principal and interest after the first year and deposits into another one-year account at the same rate. What will be his interest for the second year?

d. What will his balance be after two years?

Principal = $1230

Rate = 2.19%

Formula to be used:

Simple interest = (P*R*T)/100

where P = principal

R = rate

T = time in years

Calculating interest for the first year:

S.I = (1230*2.19*1)/100

S.I = 26.93

So, he will earn $26.93 as interest in the first year

And balance after the first year will be $1256.93

Solving for the second year:

P = 1256.93

S.I = (1256.93*2.19*1)/100

= 27.52

So, interest for the second year will be $27.52

And balance after the second year will be $1284.45

Learn more about Simple interests:

https://brainly.com/question/25845758

#SPJ4

The students at Woodward elementary voted for a school mascot. The falcon won the race 5/8 of the votes and the eagle came seconds with 1/3 of the remaining votes. Is 536 students voted for a mascot, how many students voted for the eagle

Answers

It is found that total 67 students voted for eagle.

Two ratios are set to be equal in an equation called a proportion.

Given students at Woodward elementary voted for a school mascot.

Falcon received 5/8 of the vote, winning the post.

Eagle turned up second with 1/3 of the remaining votes.

Total number of students voted for a mascot = 536

The total amount of votes falcon received = 5/8 × 536

= 67 × 5

= 335 votes

Subtract the votes received by falcon from the total number of votes.

= 536 ₋ 335

= 201

Now the remaining votes are 201, from the remaining votes eagle received 1/3 of it.

votes gained by eagle = 1/3 × 201

= 67

Therefore 67 students voted for the eagle.

Learn more about Proportion here:

brainly.com/question/15712887

#SPJ9

What is the graph of y = -3/4x – 2?

Answers

In the graph of y = -3/4x – 2 is represent linear equation.

What in mathematics is a linear equation?

There are only one or two variables in a linear equation. No variable can be multiplied by a number larger than one or used as the denominator of a fraction in a linear equation. All of the points fall on the same line when you identify the values that together make a linear equation true and plot those values on a coordinate grid.A linear equation with one variable is one that contains just one variable. It has the formula Ax + B = 0, with A and B being any two real numbers and x being an ambiguous variable with only one possible value. One such linear equation in one variable is 9x + 78 = 18.

The graph is represent a linear equation .

Learn more about linear equation

brainly.com/question/11897796

#SPJ9

a) x³y²if x = 2 and y = 4

Answers

Answer:

128

Step-by-step explanation:

x³y²if x = 2 and y = 4

x³*y²

[tex](2)^{3} * (4)^{2}[/tex]

(2*2*2)*(4*4)

(8)*(16)

128

A random sample of 95 seniors are asked whether they plan to attend Homecoming. Of these, 88 seniors said they will attend. What is the margin of error at 90% confidence and it’s interpretation?

A. 0.053; 90% of the time we will capture the true proportion of seniors who will attend homecoming within 0.053 of the population proportion.
B. 0.044; 90% of the time we will capture the true proportion of seniors who will attend homecoming within 0.044 of the population proportion.
C. 0.044; we are 90% confident that the true proportion of seniors who will attend homecoming is within 0.044 of the sample proportion
D. 0.053; we are 90% confident that the true proportion of seniors who will attend homecoming is within 0.053 of the sample proportion

Answers

Option C: At margin of error of 0.44, we are 90% confident that the true proportion of seniors who will attend homecoming is within 0.044 of the sample proportion.

What is the confidence Interval?

The formula for confidence interval of proportions is;

CI = p^ ± z√((p^(1 - p^)/n)

where;

CI is confidence interval

p^ is sample proportion

z is test statistic at confidence level

n is sample size

We are given;

n = 95

x = 88

Thus;

p^ = 88/95 = 0.9263

z at CL of 90% = 1.645

Now, margin of error is;

E = z√((p^(1 - p^)/n)

Thus;

E = 1.645√((0.9263(1 - 0.9263)/95)

E ≈ 0.044

Thus, at margin of error of 0.44, we are 90% confident that the true proportion of seniors who will attend homecoming is within 0.044 of the sample proportion.

Read more about Confidence Interval at; https://brainly.com/question/15712887

#SPJ1

Attribute data is data that logically can be only whole numbers and can be expressed as:_____.

Answers

Attribute data is data that logically can be only whole numbers and can be expressed as control charts.

What is Attribute data?Attribute data is information that is used to create control charts. This information can be used to generate a variety of chart systems, such as percent charts, charts displaying the number of affected units, count-per-unit charts, demerit charts, and quality score charts. In a nutshell, variable data is data in which quality is described quantitatively in terms of dimensions, weights, or other characteristics, whereas attribute data is data in which quality is described qualitatively in terms of measurements. Attribute data examples include sorting and counting the number of blemishes (defects) in a specific product and the number of nonconforming pieces (defectives). Assume we want to look into the quality of a bag of M&Ms.

Therefore, attribute data is data that logically can be only whole numbers and can be expressed as control charts.

Know more about Attribute data here:

https://brainly.com/question/17290596

#SPJ4

Damian is making dumplings. If he uses 1/2
cup of dough for each dumpling, how many cups of dough does Damian need to make 16 dumplings? Express your answer in simplest form.

Answers

Answer:

8 cups

Step-by-step explanation:

Amount of cups of dough for each dumpling × Number of dumplings = Number of cups of dough

1/2 × 16 = 8

8 is the simplest form; cannot be simplified.

Hope this helps! ^^

How many triangles exist with the given side lengths? 7 in, 7 in, 7 in A. No triangle exists with the given side lengths. B. Exactly one unique triangle exists with the given side lengths. C. More than one triangle exists with the given side lengths.How many triangles exist with the given side lengths? 7 in, 7 in, 7 in A. No triangle exists with the given side lengths. B. Exactly one unique triangle exists with the given side lengths. C. More than one triangle exists with the given side lengths.

Answers

Answer:

B. Exactly one unique triangle exists with the given side lengths

Step-by-step explanation:

A triangle has three sides. So if all three sides are the same in length then it is a equilateral triangle. Which means that only one triangle can be formed.

I hope this helps!! Have a good day :D

Using the protractor tool on the right, choose the image that represents an angle that is 100°.

Answers

Answer:

If I'm right it should be B.

Step-by-step explanation:

I looked it up

Write a function g whose graph represents a horizontal stretch by a factor of 4 followed by a reflection in the y-axis of the graph of f(x)=|x|.

Answers

The function is 4|x-4|.

It is required to find the  function g.

What is function?

A function is defined as a relation between a set of inputs having one output each. function is a relationship between inputs where each input is related to exactly one output. Every function has a domain and codomain or range. A function is generally denoted by f(x) where x is the input.

Given:

The original function is:

f(x)=|x|

Translation 4 units to the right we get,

f(x-4)=|x-4|

Horizontal stretch by a factor of 4

Multiplying by 4, so:

g(x)=4f(x-4)=4|x-4|

Therefore, the function is 4|x-4|.

Learn more details about function here:

https://brainly.com/question/12431044

#SPJ1

A dangling modifier

defines a noun or verb somewhere in a sentence
does not clearly describe a word or phrase in a sentence
enhances a target word or phrase in a sentence
is a phrase loosely attached to the end of a sentence

Answers

Answer:

does not clearly describe a word or phrase in a sentence

Step-by-step explanation:

Not sure that this is math but...

Answer:

The answer is B

Step-by-step explanation:

B) does not clearly describe a word or phrase in a sentence

please help me, i have a test soon :/

Answers

Answer:

-2 <= y <= 4

Step-by-step explanation:

-3 <= 2y + 1 <= 9

-4 <= 2y <= 8

-2 <= y <= 4

Answer:

-2 <= y <= 4

Step-by-step explanation:

-3 <= 2y + 1 <= 9

-4 <= 2y <= 8

-2 <= y <= 4

Your friend took an introductory statistics class last year and learned all about density curves. she tells you that two requirements of a density curve are:______.

Answers

The required requirement of the density curve is should be equal to 1 and the ordinate should not be zero.

Given that,
Two requirements of a density curve are to be determined.

What is a density curve?

A density curve is defined as a curve on a graph that represents the distribution of values in a dataset.

Here,

The two requirements of a density curve should be,

a. The area under the density curve should be equal to 1.

 

b. The ordinate of the curve should not be zero i.e. they should always have the vertical height.

Thus, the required requirement of the density curve is mentioned above.

Learn more about density curves:

https://brainly.com/question/18345488
#SPJ4

Justin purchased a 20 pound pumpkin for $9.80. How much did she pay per pound? show your work!​

Answers

9.80 divided by 20 is 2.1

Answer: so Justin pays 0.49 per pound for each pumpkin

Give me brainliest if it is correct

Step-by-step explanation: so Justin a 20 purchased a pound Pumpkin for 9.80 so first

you put [tex]\frac{9.8}{20}[/tex] and when you divide you get  0.49

PLEASE HELP FAST!!

Select true or false:

The function -3(x + 2)(x - 5)³ > 0, when x < -2 or x > 5.

O True
O False

Answers

Answer:

false

Step-by-step explanation:

Which of the following is not a rational number?
A) The product of 14 and 0.833333...
B) The sum of 27 and 43
C) The product of 12 and 17−−√
D) The sum of 5+5√ and 14−5√

Answers

The product of 12 and √17 is not a rational number.

Any number that can be expressed as a fraction and where the denominator (the bottom number) and the numerator (the top number) are both integers is considered a rational number.

In other words, p/q, where p and q are both integers and q ≠ 0, can be used to represent a rational number.Irrational numbers are real numbers that cannot be represented as simple fractions. An irrational number cannot be expressed as a ratio, such as p/q, where p and q are integers, q≠0. It is a contradiction of rational numbers.

The product of ant two rational numbers is always a rational number , but product of a irrational number and a rational number is not a rational number.

Hence only the third option is correct.

To learn more about rational number this;

https://brainly.com/question/24398433

#SPJ9

Experimental outcomes that are based on measurement scales such as time, weight, and distance can be described by _____ random variables.

Answers

Experimental outcomes that are based on measurement scales such as time, weight, and distance can be described by Continuous random variables.

What is Continuous Random Variable ?

A continuous random variable is one which takes an infinite number of possible values. Continuous random variables are usually measurements. Examples include height, weight, the amount of sugar in an orange, the time required to run a mile.

Learn more about Continuous Random Variable at:

https://brainly.com/question/13733697

#SPJ4

Ry+z/m-t=x. Solve for y

Answers

In linear equation, y = \frac{x}{r} - \frac{z}{mr} + \frac{t}{r} is  simple form .

What is a formula for linear equations?

An equation is said to be linear if the maximum power of the variable is consistently 1. Another name for it is a one-degree equation. A linear equation with one variable has the conventional form Ax + B = 0. In this case, the variables x and A are variables, while B is a constant.A linear equation has the slope-intercept form y = mx + b. Variables in the equation are x and y. When x is 0, the integers m and b provide the line's slope (m) and the value of y. (b). Because (0,y) is the location where the line crosses the y-axis, the value of y when x is 0 is referred to as the y-intercept.

Ry+ z/m-t=x

Ry = x - z/m + t

[tex]y = \frac{x - \frac{z}{m}+ t }{r}[/tex]

[tex]y = \frac{x}{r} - \frac{z}{mr} + \frac{t}{r}[/tex]

Learn more about linear equations

brainly.com/question/11897796

#SPJ9

Can someone help me on this

Answers

Answer:

one solution

Step-by-step explanation:

-7 works

7 does not

Lesson Performance Task
The sun is an excellent source of electrical energy. A field
of solar panels yields 16.22 Watts per square feet. Determine
the amount of electricity produced by a field of solar panels
that is 305 feet by 620 feet.

Answers

Answer:

electricity produced will be 3067202 watt

Step-by-step explanation:

solar panels yields 16.22 Watts per square feet

area of field= 305*620   [area=length*breath]

=189100

electricity produced will be

189100*16.22

=3067202 watt

learn more from here

https://brainly.com/question/28514722

#SPJ9

If you have the x and y components of a vector, which trigonometry function can you use to determine its angle relative to the x-axis?.

Answers

If we have the x and y components of a vector, the trigonometry function that can be used to determine its angle relative to the x-axis is cosine function.

For given question,

Let α be an angle between vector a and vector b.

The angles between two vectors is given by,

cos(α) = [tex]\frac{\vec a . \vec b}{|\vec a | | \vec b|}[/tex]

The x component of vector is usually denoted by [tex]\vec i[/tex]

Let vector be [tex]x\vec i + y\vec j[/tex]

Let [tex]\vec a=\vec i, ~ \vec b=x\vec i + y\vec j[/tex]

[tex]\vec a . \vec b=x[/tex]

[tex]|\vec a|=1[/tex]

[tex]|\vec b|=\sqrt{x^2+y^2}[/tex]

So, the angle between the vector and x-axis is [tex]cos^{-1}(\frac{x}{\sqrt{x^2+y^2} } )[/tex]

Therefore, if we have the x and y components of a vector, the trigonometry function that can be used to determine its angle relative to the x-axis is cosine function.

Learn more about vector here:

https://brainly.com/question/2375446

#SPJ4

triangle mno is shown. which triangle can be shown to be congruent to triangle mno with only the given information? explain your reasoning.

Answers

Answer: triangle 4  MNO≅JKL

Step-by-step explanation:

Problem B: Mr. Zoetz placed red, blue, and yellow gumballs in his gumball machine. • He placed 253 yellow gumballs in the gumball machine. He placed 98 more yellow gumballs than red gumballs in the gumball machine • He placed 27 fewer blue gumballs than red gumballs in the gumball machine. How many gumballs did Mr. Zoetz place in the gumball machine?​

Answers

He placed 479 gumballs in the gumball machine.

We are given that Zoetz placed red, blue, and yellow gumballs in his gumball machine.

Now in the gumball machine, we are given that he:

He has placed 253 yellow gumballs.

Now, we are given an expression that the number of red gumballs is 98 less than the yellow ones.

Number of red gumballs = 253 - 98 = 155 gumballs.

Also, another expression says that blue gumballs are 27 less than the red ones.

Number of blue gumballs = 155 - 27 = 128 gumballs.

Total gumballs = 253 + 98 + 128 = 479 gumballs.

Therefore, he placed 479 gumballs in the gumball machine.

Learn more about expression here:

https://brainly.com/question/723406

#SPJ9

The probability of a particular event occurring is 0.27.

What is the probability that the event will NOT occur?

Answers

The Probability of not occurring of that event is 0.73.

Simply put, probability is the likelihood that something will occur.

When we don't know how an event will turn out, we can discuss the likelihood or likelihood of several outcomes. Statistics is the study of events that follow a probability distribution.

Flipping a coin is the best illustration for understanding probability:

Heads or tails are the two possible results.

What is the likelihood that the coin will land on heads? P(H) = can be used to determine this. P(H)=? P, H, the equals sign, the left and right parenthesis, and the question mark. It's possible that you already know 50%, or half and half, is the likelihood. How do we figure it out, though?

Probability of an event = (number of possible outcomes) / (total number of outcomes)

we know , total probability is always 1

Total probability = pro. of event occur + prob. of event not occur

1 = 0.27 + event not occur

probability of event not occur is 0.73

Read more about probability here:

https://brainly.com/question/11234923

#SPJ4

A car driving at 10.0 m/s southward accelerates at 4.11 m/s2 southward for 7.25 s. what is the car's speed after this amount of time?

Answers

The car's speed after the given amout of time is 19.8 m/s²

How would you define acceleration?

The rate at which an object's velocity with respect to time changes is referred to as acceleration in mechanics. They are vector quantities, accelerations. The direction of the net force acting on an object determines the direction of its acceleration. A point or object going straight ahead is accelerated when it accelerates or decelerates. Any alteration in an object's velocity could take the form of a change in direction of motion or a speed increase or reduction. The moon orbiting the earth, an apple falling to the ground, and a car stopped at a stop sign are a few instances of acceleration.

Average Acceleration =Change in Velocity/ Time Taken

So Change in Velocity is 10-x m/s

Time taken is 7.25 s

Given accelaration 4.11 m/s²

Putting the values we get,

4.11 = (10-x)/7.25

⇒29.8 = 10-x

⇒x=19.8 m/s²

To learn more about acceleration, click here:

https://brainly.com/question/2303856

#SPJ4

ASAP PLS I NEED IT AND TY

Answers

Answer:

2

Step-by-step explanation:

to solve this equation you must find what you multiply A to to equal A'

you can solve this by dividing 18 by 9

18 / 9 = 2

that is your answer

Unir las operaciones con el mismo resultado
(Ignoren los resultados)

Answers

1 ) 3 6) 6
2) 5 7) 23
3) 16 8) 8
4) -14 9) 6 + 6i square root of 2
5) -9 10) 5
11) -9

2.(2) square root of 38.2

Answer:

Step-by-step explanation:

1.

1) =7+(-4)=3

2) =13-8=5

3) =11+5=16

4) =-5-9=-14

5) =-8-1=-9

6) =-1-(-7)=6

7) =-10+13=3

8) =15-7=8

9) =-2+6=4

10) =9-4=5

11) =-1-8=-9

2.

[tex]\sqrt{12.8+25.4}= \sqrt{38.2}\approx 6.18[/tex]

Simply completely:
5y(xy^3)^2

Answers

Answer:

5y^7x^2

Step-by-step explanation:

5y (xy^3)^2

apply product rule: xy^3

5y(x^2(y ^3)^2)

multiply exponents: (y^3)^2

5y(x^2y^6)

Add exponents: y and y^6

5y^7x^2

Use the following items to determine the total assets, total liabilities, net worth, total cash inflows, and total cash outflows.


Rent for the month $ 1,390 Monthly take-home salary $ 3,920
Cash in checking account $ 1,340 Savings account balance $ 2,770
Spending for food $ 1,110 Balance of educational loan $ 3,050
Current value of automobile $ 8,020 Telephone bill paid for month $ 85
Credit card balance $ 334 Loan payment $ 143
Auto insurance $ 321 Household possessions $ 3,510
Stereo equipment $ 3,320 Payment for electricity $ 189
Lunches/parking at work $ 204 Donations $ 116
Home computer $ 2,490 Value of stock investment $ 1,160
Clothing purchase $ 139 Restaurant spending $ 223

Answers

ni yo se y quieres que te ayude

Simplify fully
4x^2+4x/2x^2-2

Answers

Answer:

the answer i got is 2 (x+1) (2x^2-2x+1) / x :)

Answer:

[tex]\frac{2x}{x-1}[/tex]

Step-by-step explanation:

[tex]\frac{4x^2+4x}{2x^2-2}[/tex] ← factor numerator and denominator

= [tex]\frac{4x(x+1)}{2(x^2-1)}[/tex] ← cancel 4 and 2 on numerator/denominator by 2

= [tex]\frac{2x(x+1)}{x^2-1}[/tex] ← x² - 1 is a difference of squares

= [tex]\frac{2x(x+1)}{(x-1)(x+1)}[/tex] ← cancel (x + 1) on numerator and denominator

= [tex]\frac{2x}{x-1}[/tex]

Other Questions
Instructions: Write a short paragraph narrative essay on the prompt down below. Please make sure that your hook is strong and captivates the reader. I will place these writings in your writing folder, and a grade will be assigned in the grade book. Please be sure to take your time.Pretend that your favorite character has stepped out of the pages of a book, or out of your television, and into real life.Write a story about what happens that day. The supergroup archaeplastida includes land plants and other photosynthesizers, such as ____________ , which include the chlorophytes and charophytes, and ____________ . Is it possible for an object to be accelerating and at rest at the same time? Explain. Each of the species of finches on the galapagos islands has its own distinctive ________ and ________. In the margin, explain what the use of the word belovedreveals about the relationship between a leader and hispeople in the time of the Geats. Lines 266-292 Suppose you have a plant with the genotype rrttpp. how many possible gametes could this individual generate? The fed's strategy of increasing the money supply and lowering interest rates in order to increase real gdp is called? help, please ....... oi give 69 points Which of the following will decrease soil nitrates?A. Fast growing cropsB. DecomposersOC. Nitrifying bacteriaD. Lightning The following table shows the number of hours some teachers in two schools expect students to spend on homework each week.School A91415171771566School B128131119151658Part A: Create a five-number summary and calculate the interquartile range for the two sets of data. (5 points)Part B: Are there any outliers present for either data set? Justify your answer mathematically. (5 points) (10 points) Drugs that facilitate the activity of the synapses of a particular neurotransmitter are said to be __________ of that neurotransmitter. select one: Write the equation of a line perpendicular to the line: y = 2x - 1 that goes through the point (-8, -5).Write your answer in slope- intercept form, using reduced fractions for the slope and intercept According to soll, what factors led to the establishment of the first public waterworks system in new york city? where and when was it founded? 5 key events of the anti federalist papers 2 The analysis of the sites of the serpent mound and great zimbabwe are similar because:_________ Explain active transport. What is another name for a back door that was accidentally left in a product by the manufacturer? In 8 years Jack will be three times as old as he is now. How old is he now? Describe the classification of epithelium in terms of shape and number of layers of cells. omplete the acrononym with the desirable traits that a caregiver must possess.C -O -M -P -E -T -E -N -C -E -