solve the quadratic formula simpliest set for y^2-7y-9=0

Cube: Rubrics Cube or Dice

Rectangular Prism: Notebook or Gift box

Sphere: Globe or Beach ball

Cone: Carrot or Cone

Cylinder: Barrel or Bucket

Volume Formulas:

Cube = a^3

Rectangular Prism = L x B x H

Sphere = 4/3 pi(r^2)

Cone = 1/3 pi(r^2)h

Cylinder = pi(r^2)h

(pi = 3.14)

Hope this helps.

Answer:

no, in a function x can not repeat so points (2,-1) and (2,-2) makes it wrong bc 2 is your x

The age of the boy is 14 years.

Given average age of 8 men, 7 women and 1 boy is 45 years.

Averages are used to condense a vast number of data points into a single value. It is a visual depiction of all the data set's available numbers. By adding up all the data values and dividing them by the total number of data points, the average is calculated.

age of 8 men is 48 years.

age of 7 women is 46 years.

age of the boy is = ?

= (45 ×16 ₋ 48 × 8 ₋ 7 × 46)

= (720 ₋ 324 ₋ 322)

= 14 years.

Hence the age of the boy is 14 years.

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The number in cell A14 is 2744

The pattern is given as

1, 8, 27, 64, 125

When the above number in the pattern is represented as exponents, we have

1^3, 2^3, 3^3, 4^3, 5^3

So, the nth term is

Tn = n^3

In cell A14, the value of n is 14

So, we have

T14 = 14^3

Evaluate

T14 = 2744

Hence, the number in cell A14 is 2744

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Answer: -72 I think

Step-by-step explanation:

Answer:

Inductive

Step-by-step explanation:

The given argument presented is an example of inductive reasoning.

Inductive reasoning entails drawing broad generalizations based on a small number of observations, and the conclusion is not necessarily guaranteed to be correct, but simply likely based on the data.

The argument presented is an example of inductive reasoning, because it is based on a specific observation and a generalization that goes beyond the available evidence.

While the previous and current mayors may be honest, based on this limited evidence, it is not necessarily true that all mayors are honest.

The argument makes the assumption that the honesty of these two persons is indicative of all mayors, which is a conclusion based on little evidence.

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You will make 1200 transactions by using the unitary method.

What is the unitary method?

Applying the unitary method to the given problem,

360 sec (three-sixty) = 360/60 = 6 min (six)

20*6(six) = 120 hr = 120*60 min

120*60/6 = 1200 transactions (answer)

You will make 1200 transactions by using the unitary method.

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Answer:

49

Step-by-step explanation:

Because 49/7 is 7 which makes it a perfect square.And it saids the square root of x is 49

Hope that helped!

Have any questions? Feel free to ask questions

Answer:

-67

Step-by-step explanation:

[tex]x=-20 \implies x<-12 \\ \\ \therefore f(-20)=3(-20)-7=-67[/tex]

Answer:

x + y = -3.

Step-by-step explanation:

x + y = 2y = -x + 2   - the slope of this line is -1 . The line parallel to it will also have a slope of -1.It also passes through (-7,4) so we havey - 4 = -1(x - -7)y - 4 = -1(x + 7)y - 4 = -x - 7x + y = -3 is the required equation.

Answer: 848000

Step-by-step explanation:

(2 x 10³) x (4 x 106)

⇒2000 * 424
⇒ 848000

Answer:

x/7+12

Step-by-step explanation:

One seventh refers to 1/7.

Since we do not know what "a number" is it, it is written as "x."

Whenever you see the word "increased" think addition.

So in this case,

x / 7 + 12

Answer's:

27. vertex: (-4, -5) and x-intercept: (√5 - 4, 0) and (-√5 - 4, 0)

28. vertex: (-5, -11) and x-intercept: (√11 - 5, 0) and (-√11 - 5, 0)

29. vertex: (1, 16) and x-intercept: (-3, 0) and (5, 0)

To find vertex, the quadratic function should be in f(x) = a(x - h)² + k form.

where:

27.

g(x) = x² + 8x + 11

completing square:

g(x) = (x² + 8x) + 11

g(x) = (x + 4)² + 11 - (4)²

g(x) = (x + 4)² - 5

g(x) = (x - (-4))² - 5

To find x-intercept: set y = 0

[tex]\sf (x + 4)^2 - 5 = 0[/tex]

[tex]\sf (x + 4)^2 = 5[/tex]

[tex]\sf x + 4 = \pm \sqrt{5}[/tex]

[tex]\sf x= \sqrt{5}-4, \ - \sqrt{5}-4[/tex]

Hence, the vertex is (-4, -5) and x intercepts (√5 - 4, 0) and (-√5 - 4, 0).

28.

f(x) = x² + 10x + 14

completing square:

f(x) = (x² + 10x) + 14

f(x) = (x + 5)² + 14 - (5)²

f(x) = (x + 5)² - 11

Find x intercept, so y = 0:

[tex]\sf (x + 5)^2 - 11 = 0[/tex]

[tex]\sf (x + 5)^2 = 11[/tex]

[tex]\sf x + 5 = \pm\sqrt{11}[/tex]

[tex]\sf x = \sqrt{11} -5, \ -\sqrt{11} -5[/tex]

Hence, the vertex is (-5, -11) and x intercepts (√11 - 5, 0) and (-√11 - 5, 0).

29.

f(x) = -(x² - 2x - 15)

f(x) = -((x² - 2x)) + 15

f(x) = -(x - 1)² + 15 + (-1)²

f(x) = -(x - 1)² + 16

Find the x-intercept's:

[tex]\sf -(x - 1)^2 + 16 = 0[/tex]

[tex]\sf -(x - 1)^2 = -16[/tex]

[tex]\sf (x - 1)^2 = 16[/tex]

[tex]\sf x - 1 = \pm\sqrt{16}[/tex]

[tex]\sf x - 1 = \pm4[/tex]

[tex]\sf x = -3, \ 5[/tex]

Hence, the vertex is (1, 16) and x intercepts (-3, 0) and (5, 0).

Answer:

[tex]\textsf{27.} \quad \textsf{Vertex}:(-4,-5) \quad \textsf{$x$-intercepts}: x=-4+\sqrt{5}, \:\:x=-4-\sqrt{5}[/tex]

[tex]\textsf{28.} \quad \textsf{Vertex}:(-5,-11) \quad \textsf{$x$-intercepts}: x = -5+\sqrt{11}, \:\:x=-5-\sqrt{11}[/tex]

[tex]\textsf{29.} \quad \textsf{Vertex}:(1,16) \quad \textsf{$x$-intercepts}: x = 5, \:\:x=-3[/tex]

Step-by-step explanation:

Vertex form of a quadratic function:

[tex]\boxed{y=a(x-h)^2+k}[/tex]

where:

Given function:

[tex]g(x)=x^2+8x+11[/tex]

Change to vertex form by completing the square.

Add and subtract the square of half the coefficient of x:

[tex]\implies g(x)=x^2+8x+11 +\left(\dfrac{8}{2}\right)^2-\left(\dfrac{8}{2}\right)^2[/tex]

[tex]\implies g(x)=x^2+8x+11 +16-16[/tex]

[tex]\implies g(x)=x^2+8x+16+11-16[/tex]

[tex]\implies g(x)=x^2+8x+16-5[/tex]

Factor the perfect trinomial:

[tex]\implies g(x)=(x+4)^2-5[/tex]

Therefore, the vertex is (-4, -5).

To find the x-intercepts, set the function to zero and solve for x:

[tex]\begin{aligned}g(x) & = 0\\\implies (x+4)^2 -5 & = 0\\(x+4)^2 & = 5\\\sqrt{(x+4)^2} & = \sqrt{5}\\x+4&=\pm\sqrt{5}\\x+4-4&=-4\pm\sqrt{5}\\x&=-4\pm\sqrt{5}\end{aligned}[/tex]

Therefore, the x-intercepts are:

[tex]x = -4+\sqrt{5}, \quad x = -4-\sqrt{5}[/tex]

---------------------------------------------------------------------

Given function:

[tex]f(x)=x^2+10x+14[/tex]

Change to vertex form by completing the square.

Add and subtract the square of half the coefficient of x:

[tex]\implies f(x)=x^2+10x+14+\left(\dfrac{10}{2}\right)^2-\left(\dfrac{10}{2}\right)^2[/tex]

[tex]\implies f(x)=x^2+10x+14+25-25[/tex]

[tex]\implies f(x)=x^2+10x+25+14-25[/tex]

[tex]\implies f(x)=x^2+10x+25-11[/tex]

Factor the perfect trinomial:

[tex]\implies f(x)=(x+5)^2-11[/tex]

Therefore, the vertex is (-5, -11).

To find the x-intercepts, set the function to zero and solve for x:

[tex]\begin{aligned}f(x) & = 0\\\implies (x+5)^2 -11 & = 0\\(x+5)^2 & = 11\\\sqrt{(x+5)^2} & = \sqrt{11}\\x+5&=\pm\sqrt{11}\\x+5-5&=-5\pm\sqrt{11}\\x&=-5\pm\sqrt{11}\end{aligned}[/tex]

Therefore, the x-intercepts are:

[tex]x = -5+\sqrt{11}, \quad x = -5-\sqrt{11}[/tex]

---------------------------------------------------------------------

Given function:

[tex]f(x)=-(x^2-2x-15)[/tex]

Change to vertex form by completing the square.

Add and subtract the square of half the coefficient of x:

[tex]f(x)=-\left(x^2-2x-15+\left(\dfrac{-2}{2}\right)^2-\left(\dfrac{-2}{2}\right)^2\right)[/tex]

[tex]f(x)=-\left(x^2-2x-15+1-1\right)[/tex]

[tex]f(x)=-\left(x^2-2x+1-15-1\right)[/tex]

[tex]f(x)=-\left(x^2-2x+1-16\right)[/tex]

Factor the perfect trinomial:

[tex]f(x)=-\left((x-1)^2-16\right)[/tex]

Simplify:

[tex]f(x)=-(x-1)^2+16[/tex]

Therefore, the vertex is (1, 16).

To find the x-intercepts, set the function to zero and solve for x:

[tex]\begin{aligned}f(x) & = 0\\\implies -(x-1)^2 +16 & = 0\\(x-1)^2 -16 & = 0\\(x-1)^2 & = 16\\\sqrt{(x-1)^2} & = \sqrt{16}\\x-1&=\pm4\\x-1+1&=1\pm4\\x&=5,-3\end{aligned}[/tex]

Therefore, the x-intercepts are:

[tex]x = 5, \quad x=-3[/tex]

Answer:

1,803.268

Step-by-step explanation:

so thousandths place is three number after the decimal just see the fourth number after the decimal and if it 5 or greater round the (in this case) 8 but since the fourth number was 4 it stays the same but only three numbers

Answer:

21

Step-by-step explanation:

Just substitute -3 in for a and 2 in for b

[tex]a^2 + 6b\\-3^2 + 6(2)\\9 + 6(2)\\9 + 12\\21[/tex]

When you square a negative number, the answer is positive. Good luck, and have a great day!

Also, Jesus loves you!!!!

If the length of one side of Rory's garden is [tex]5^{2}[/tex] then the area of the garden will be equal to 625 [tex]feet^{2}[/tex].

Given that Rory' garden is square in shape and the length of one side of the garden is [tex]5^{2}[/tex] feet.

We are required to find the area of the garden.

Area is basically the quantity that expresses the extent of a region on the plane or on a curved surface.

Area of square=Side*Side

Area=[tex]5^{2}[/tex]*[tex]5^{2}[/tex]

=[tex]5^{4}[/tex]

=625 [tex]feet^{2}[/tex]

Hence if the length of one side of Rory's garden is [tex]5^{2}[/tex] then the area of the garden will be equal to 625 [tex]feet^{2}[/tex].

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The patient should take three-tenths of a tablet every 4 hours and the infusion rate is 0.13 mL per 12 hours.

Given that, a doctor administers a drug to a ​34-kg ​patient, using a dosage formula of ​55mg/kg/day.

In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.

Let the number of tablets should a 34​-kg patient takes every four​ hours to be x.

Now, 55 × 34 = 1870 mg/day

For every four hours:

1870 × 1 /24 × 4 = 311.666

≈312 mg per 4 hours

So, x=312/4 × 1/300 = 78 × 0.0033

=0.26 tablet

Liquid suspension is for every 12 hours:

So, 312/12 × 1/200 = 26 × 0.005 = 0.13 mL

Hence, the patient should take three-tenths of a tablet every 4 hours and the infusion rate is 0.13 mL per 12 hours.

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The probability that exactly 2(two) out of the 5(five) contestants win a prize is 31.25%.

What is probability?

The probability that exactly 2(two) out of the 5(five) contestants win a price is given by,

P(x = 2)(two) = 5/16

This is equivalent (equal) to 31.25%.

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Answer: 0

Step-by-step explanation:

-2+-1 = -3

-3+0 = -3

-3+1 = -2

-2+2 = 0

Answer:

12

Step-by-step explanation:

=================================================

Explanation:

Point B is at the location (x, y)

The x coordinates of A and B are 3 and x respectively. Add them up, divide in half, and set the result equal to the x coordinate of M which is 5

(3+x)/2 = 5

3+x = 2*5

3+x = 10

x = 10-3

x = 7 which is the x coordinate of point B

Repeat this same idea for the y coordinates.

(8+y)/2 = 6

8+y = 2*6

8+y = 12

y = 12-8

y = 4

Therefore, point B is located at (x,y) = (7, 4)

Visual verification is shown below. You could also use the midpoint formula on segment AB to find that M = (5,6) is the midpoint.

Answer:

29.16 grams

Step-by-step explanation:

To solve this, you have to use the weight of cocoa formula. So the weight of cocoa = 54% percent of chocolate bar's weight which is 54 gram. So weight of cocoa = 54/100*54. This will give you 29.16 grams.

The values of the piecewise function is g(1) = 3, g(2) = 1 / 2, g(3) = 1 / 4.

Piecewise functions are functions consisting in two or more expression constrained by intervals. In this case, we find a piecewise function formed by three equations. In this exercise we need to evaluate the function, whose expression depends on the x-value to be used. There are three values to be evaluated:

x = 1

g(1) = (1 + 1)² - 1

g(1) = 2² - 1

g(1) = 4 - 1

g(1) = 3

x = 2

g(2) = - (1 / 4) · 2 + 1

g(2) = - (1 / 2) + 1

g(2) = 1 / 2

x = 3

g(3) = - (1 / 4) · (3) + 1

g(3) = - (3 / 4) + 1

g(3) = 1 / 4

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Integer addition is the addition of integers with the same signs, whereas integer subtraction is the addition of integers with the opposite signs.

Are there any consistent rules for adding and subtracting integers?

What in math is an integer?

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The answer is [tex]-28b^4c^2+20b^6c^8-32bc^8[/tex]  without parentheses .

To write this expression without parentheses, each term inside the parentheses must be multiplied by the term outside the parentheses.

[tex]-4bc^2(7b^3-5b^5c^6 +8c^6)=(-4bc.7b^3)+(4bc^2.5b^5c^6)-(4bc^2.8c^6)\\-4bc^2(7b^3-5b^5c^6 +8c^6)=-28b^4c+20b^6c^8-32bc^8[/tex]

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The length of BC to the nearest while meters is 143m

Given the following parameters

AC = 108 m

<A = 53°

Using the SOH CAH TOA identity

tan 53 = opp/hyp

tan53 = BC/108

Determine the measure of BC

BC = 108tan53

BC = 143.32m

Hence the length of BC to the nearest while meters is 143m

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The polynomial function with degree 5 is formed as:

f (x) = x (x + 2)³ (x - 2).

(-2) is derived from the factor (x + 2); because it has a multiplicity of three, you must account for that zero three times; thus, it is composed as (x + 2)³.

0 is derived from the factor x.

2 is derived from of the factor (x - 2).

The factored polynomial function is:

f (x) = x (x + 2)³ (x - 2)

Thus, the polynomial function with degree 5 is composed.

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Answer:

4x12 equals 48 therefore 48+5= 53......