Please help grade 8 math
Answer:
2, 3, 5
Step-by-step explanation:
To test whether a graph is a function, we use the line test. If one x has two y then that graph is not a function. In all the graphs 2,3,5 represent a function.
Shawn walks 5 miles in a southeast direction from his house. He stops for lunch then walks 6 miles in a northeast direction from his lunch spot. What is the shortest distance Shawn can walk to return home.
Shortest distance to reach home = 7.81 miles
What is Pythagoras theorem?Pythagoras theorem states that "In a right-angled triangle, the square of the hypotenuse side is equal to the sum of squares of the other two sides".
Given, Shawn walks 5miles in southeast from his house.
After having lunch he walks 6 miles north east.
Angle between both directions is 90°.
By the figure
AB = 5miles
BC = 6 miles
Shortest distance to return home is AC
By Pythagoras theorem
AC² = AB² + BC²
= 5² + 6²
AC² = 25 + 36
AC² = 61
AC = √61
AC = 7.81 miles.
Hence, 7.81 miles is the shortest distance to reach home.
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In the diagram below, all the measurements are given correct to the nearest cm. Not drawn to scale 28 cm 15 cm 21 cm 42 cm Calculate the greatest possible area of the shaded region.
The greatest possible area of the shaded region is 462 square centimeter.
What is Area of Rectangle?The area of Rectangle is length times of width.
In the given figure there are two rectangles.
In one rectangle the length is 28 cm and width is 15cm.
The area of small rectangle=28×15
Area of small rectangle 420
Another rectangle with length 42cm and width 21 cm
The area of large rectangle=42×21
Area of large rectangle 882 square centimeter.
The area of shaded region is 882-420
462
Hence, the greatest possible area of the shaded region is 462 square centimeter.
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43% of $4587 +100pts
Answer:
$1,972.41
Step-by-step explanation:
Half of $4587 is:
2,293.50$
What is 7% of 4587$?
The answer to that is, what I quote:
321.09$
Now lets do some fairly simple math:
2,293.50$
321.09$ -
------------------
1,972.41$
Thus, your answer is:
1,972.41$
Answer:
$1,972.41
Step-by-step explanation:
Shopping at savers mart, Lisa buys her children four shirts and three pairs of pants for $85.50. She returns the next day and buys three shirts and five pairs of pants for $115.00. What is the price of each shirt and each pair of pants?
The price of each shirt is $7.5.
The price of each pant is $18.5.
What is an equation?An equation is a mathematical statement that is made up of two expressions connected by an equal sign.
Example:
2x + 3 = 7 is an equation.
We have,
Cost of shirts = x
Cost of pants = y
Lisa buys her children four shirts and three pairs of pants for $85.50.
She returns the next day and buys three shirts and five pairs of pants for $115.00.
This means,
We can make two equations.
4x + 3y = 85.50
3x + 5y = 115
Now,
4x + 3y = 85.50
4x = 85.50 - 3y
x = (85.50 - 3y)/4
Substituting in 3x + 5y = 115.
3 (85.50 - 3y)/4 + 5y = 115
256.5 - 9y + 20y = 460
11y = 460 - 256.6
11y = 203.4
y = 18.5
And,
x = (85.50 - 3y)/4
x = (85.50 - 55.5)/4
x = 30/4
x = 7.5
Thus,
The cost of the shirt is $7.5.
The cost of the pant is $18.5.
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a rectangular container with a square base, an open top, and a volume of 1,372 cm3 is to be made. what is the minimum surface area for the container? enter only the minimum surface area, and do not include units in your answer.
The required surface area of a rectangular container is 588cm² using a volume of 1,372 cm³.
What is the surface area?The quantity of space enclosing a three-dimensional shape's exterior is its surface area.
In comparison to the definition of arc length for one-dimensional curves or the definition of surface area for polyhedra (i.e., objects with flat polygonal faces), where the surface area is equal to the sum of the areas of its faces, the mathematical definition of surface area in the presence of curved surfaces is significantly more complex.
The surface area of smooth surfaces, such as spheres, is determined using their representation as parametric surfaces.
Partial derivatives and double integration are used in this definition of surface area, which is based on infinitesimal calculus techniques.
So, we have the volume:
1,372 cm³
Then, h = 1372/s².
Now, calculate as follows:
4 s 1372/s^2 + s^2 = area
5488/s + s^2 = area
s^2 + 5488 (s^-1) = area
2s - 5488 s^-2 = 0
5488 s^-2 = 2s
5488 = 2 s^3
2744 = s^3
s = 14
s * h * s = 1372
Then, we will have: h = 7
Surface area = 14*14+4*7*14 = 196+4*7*14 = 588 cm²
Therefore, the required surface area of a rectangular container is 588cm² using a volume of 1,372 cm³.
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Need help asap.
The GDP of a country goes down as people spend more money and businesses make more products.
True or false
Answer:
I'm gonna say false
GDP or Gross Domestic Profit is the money that is being spent/made inside the country. So it stands to reason that if people are spending more, the GDP would go up.
Hope this helps!
What is the total surface area of the square pyramid below?
A 192 ft2
B 335 ft2
C 320 ft2
D 464 ft2
The total surface area of the square pyramid is 240 ft².
What is a pyramid?A three-dimensional figure is a pyramid. Its base is a flat polygon. The remaining faces are all triangles and are referred to as lateral faces.
The number of sides on its base is equal to the number of lateral faces. The line segments that two faces intersect to form its edges. The intersection of three or more edges forms a vertex.
The total surface area of the square-shaped pyramid is the sum of areas four similar triangles having a height of 8 feet,
And a base of 12 feet and the area of a square having sides lengths of 12 feet which is,
= 4[(1/2)×8×12] + 12×12 ft².
= 4×4×12 + 144 ft².
= 96 + 144 ft².
= 240 ft².
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What is the difference?
−43−(−15)
Enter your answer in the box.
Please help! :)
And hurry!
Answer:
-28 is the correct answer
Answer: -28 is your answer!
Step-by-step explanation: Hope this helped, just make sure you study so you ACE any exam you get! Studying and taking notes is v/ helpful. You got this!
what percentage of the u.s. population practice mindfulness and meditation techniques?14 percent28 percent42 percent56 percent
Step-by-step explanation:
14.2% of adults practice meditation in the us
The estimated fuel economy of a car is 27 miles per gallon (mpg), but your friend who has this car says she gets only about 24 mpg. Explain how both of these statements can be correct.
Both the estimated amount of fuel used by the car and the actual quantity of fuel used by the car are correct due to the following reasons explained below.
What is an estimated value?An estimated value is defined as an approximate value which is close enough to the correct value.
An actual value is defined as the value that is being obtained from an observed data and is taken to be the correct value of the data.
The estimated value economy of the car = 27 miles per gallon (mpg).
The actual value = 24 mpg
Therefore, Both the estimated amount of fuel used by the car and the actual quantity of fuel used by the car are correct because the actual value is within the estimated value.
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sat there are 200 cookies in a bag. 15% for which are wrapped. if 80% of the cookies are oatmeal, what is the smallest number of wrapped oatmeal cookies that could be in the bag
Answer:12
Step-by-step explanation:
If M is the midpoint of XY, find the coordinates of Y when X and M have the following
coordinates:
a) X (−4, 2), M (0, 3)
b) X (−1, −3), M (0.5, −1.6)
c) X (6, −3), M (2, 1)
d) X (4, −3), M (0, −3)
a) Y can be found using the midpoint formula, which states that the midpoint of a line segment has coordinates equal to the average of the coordinates of its endpoints. In this case, the coordinates of Y are equal to the average of the coordinates of X and M.
The formula for finding the midpoint of two points is:
Midpoint = ( (x1 + x2) / 2, (y1 + y2) / 2 )
So, the midpoint of X and Y is ( ( -4 + 4 ) / 2, ( 2 + 3 ) / 2 ) = (0, 2.5)
What are the midpoints for other numbers?b) In the same way, the midpoint of X and Y is ( ( -1 + 1 ) / 2, ( -3 + -3 ) / 2 ) = (0, -3)
c) The midpoint of X and Y is ( ( 6 + 2 ) / 2, ( -3 + 1 ) / 2 ) = (4, -1)
d) The midpoint of X and Y is ( ( 4 + 0 ) / 2, ( -3 + -3 ) / 2 ) = (2, -3)
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Will Mark Brainlist! pls help
Solve for x on the diagram below
Answer:
Below
Step-by-step explanation:
X is tha same as the samll angle next to 77°
77+ x = 90 shows x = 13 degrees
Answer:
x=13 degrees
Step-by-step explanation:
by vertical angles, angle FGD = angle CGE = x
by supplementary angles, angle AGD = 90 degrees because angle AGC = 90 degrees
Because you know that AGF = 77 degrees, you can determine that
FGD = AGD-AGF
FGD = 90-77
FGD = 13
because of vertical angles, x = 13 degrees
help please help i need
PLEASE HELP AND PLEASE READ THE QUESTION T_T
The number of revolutions per foot is 1/4 and the slope is 1/4
How to determine the number of revolutions per footFrom the question, we have the following parameters that can be used in our computation:
The graph
The graph passes through the origin
So, we can make use of a point to determine the required
So, we have
Revolution = y/x
This gives
Revolution = 1/4
This is also the same as the slope
i.e. slope = 1/4
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PLEASE DO IT I WILL GIVE CROWN THING------ ⇒a retail store is 160 ft long and 120 ft wide. the clothing department takes up half of the total area. how many square ft does the clothing department cover
The area in square ft that is covered by the department would be = 9,600 ft²
How to calculate the area covered by the department?The length of the retail store = 160 ft long
The width of the retail store = 120 ft wide
The formula used to calculate the area of a square= length × width
A = 160×120
= 19,200
The area of the retail = 19,200/2 = 9,600 ft²
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help!! matthh.. math math math math... MATH!!..
Answer:
6
Step-by-step explanation:
3/4 * x/7 = 9/14
x= 6
Which equations are equivalent to Negative one-fourth (x) + three-fourths = 12 Select all that apply. (StartFraction negative 4 x over 1 EndFraction + three-fourths = 12 Negative 1 (StartFraction x over 4 EndFraction) + three-fourths = 12 StartFraction negative x + 3 over 4 EndFraction = 12 One-fourth (x + 3) = 12 (StartFraction negative x over 4 EndFraction + three-fourths = 12
The equations are equivalent to -x/4 + 3/4 = 12 are -1(x/4) + 3/4 = 12, (-x + 3) /4 = 12 and (-x/4) +3/4 = 12
What is an equation?An equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.
Given is an equation, -x/4+3/4 = 12, we need to find that which of the given equations are equivalent to this equation,
The equivalent equations are;
2) -1(x/4) + 3/4 = 12
-x/4 + 3/4 = 12
3) (-x + 3) /4 = 12
-x/4 + 3/4 = 12
5) (-x/4) +3/4 = 12
-x/4 + 3/4 = 12
Hence, the equations are equivalent to -x/4 + 3/4 = 12 are -1(x/4) + 3/4 = 12, (-x + 3) /4 = 12 and (-x/4) +3/4 = 12
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please please helppp meeee
Answer:[tex]-\frac{2}{3}[/tex]
Step-by-step explanation: Search math w ay on the internet :)
Answer:
2/-3
Step-by-step explanation:
using rise/run we can can see that the slope rises 4 units and the run is -6 simplify to 2/-3
rafi measures the big prize wheel on a game show and calculates that it has a circumference of 56.52 feet. what is the prize wheel's radius?
The radius of the prize wheel is approximately 9.06 feet.
The circle's circumference (or perimeter) = 2πR, where R is the radius of the circle. 3.14 is the approximate value of π(up to two decimal points) value of the mathematical constant.
Again, Pi (π) is a particular mathematical constant that represents the circumference to diameter ratio of any circle.
The formula for the circumference of a circle is:
C = 2 * π * r
Where "C" is the circumference, "π" is pi (approximately equal to 3.14159), and "r" is the radius.
We can rearrange this formula to solve for the radius:
r = C / (2 * π)
Plugging in the given values:
r = 56.52 / (2 * 3.14159)
r = 56.52 / 6.28318
r = 9.05849 (approximately)
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A company sells mugs for a price of $10 each. In one month, the company sells 1,000 mugs. After doing research, the company realizes that for every $2 price increase per mug, it will sell 5 fewer mugs per month. The expression (1,000−5x)(10+2x) represents the situation.
Which two statements are true?
Responses
A. The term 2x represents the number of mugs sold.
The term 2 x, [if gte msEquation 12]>2x
B. The term 2x represents the price of each mug.
The term 2 x, [if gte msEquation 12]>2x
C. The term (1,000−5x) represents the number of mugs sold.
The term open paren 1 comma 000 minus 5 x close paren, [if gte msEquation 12]>(1,000-5x)
D. The term (10+2x) represents the price of each mug.
The term open paren 10 plus 2 x close paren, [if gte msEquation 12]>(10+2x)
E. The term (10+2x) represents the number of mugs sold.
Monica won 40 pieces of candy playing bingo at her school’s game night. Later she gave two to each of her friends. She only has eight remaining. How many friends does she have?
What is five times 14
What is 8 times 17
Answer:
5x18=90
19x17=36
Step-by-step explanation:
Consider this hypothetical reaction: a 3b c 3d. assume that the equation is balanced. in which of the reactant mole ratios given will reactant b be the limiting reagent? question 12 options: 2a/7b a/b a/4b a/5b
The only option in which B can be the limiting reagent is A/B = 1.
The molecular equation for this hypothetical reaction is 3A + 3B → 3C + 3D. To determine which reactant is the limiting reagent, we must calculate the mole ratios of the reactants. In this case, we need to compare the ratio of A to B.
If we assume that the equation is balanced, then this means that there are an equal number of moles of A and B in the reaction. Therefore, the mole ratio of A to B is 1:1 (A/B = 1).
The other given options are 2A/7B, A/4B and A/5B. All of these ratios are greater than 1, meaning that B is in excess and will not be the limiting reagent. Therefore, the only option in which B can be the limiting reagent is A/B = 1.
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The table shows the revenue produced for the number of units sold.
u (units)/r($)
30/8
32/9
34/10
36/11
How much revenue will be produced for 45 units?
Answer: 12$
Step-by-step explanation: To find the revenue produced for 45 units, we need to find the equation that represents the relationship between the number of units sold (u) and the revenue produced (r). Based on the information given in the table, we can see that the revenue increases as the number of units sold increases. So, we can assume that there is a direct proportion between the number of units sold and the revenue produced. Therefore, we can use the equation: r = ku, where k is the constant of proportionality.
We can use any two of the given pairs (u, r) to find k. For example, using (30, 8), we have:
8 = k * 30
k = 8 / 30 = 4/15
So, the equation representing the relationship between the number of units sold and the revenue produced is: r = 4/15 * u. To find the revenue produced for 45 units, we can plug in u = 45 into the equation:
r = 4/15 * 45 = 12.
Therefore, the revenue produced for 45 units is $12.
3.3 3.3 pounds of apples at the total cost of $18.15 $ 18.15 . if she purchases 7.9 7.9 pounds of apples at this store, how much would it cost?
The unit cost of apples is found to be $5.5 per pound. So the cost of 7.9 pounds of apple will be 43.45.
Here we have to calculate the value of a pound of apple from the given data, and then should multiply the unit value to find the cost of the given weight.
Weight of apple that was purchased = 3.3 lbs.
Cost of 3.3 lbs. of apples = 18.15
Cost of a pound of apple = Cost of apples purchased/ weight of apples purchased
= 18.15/3.3 = 5.5.
So each pound of apple will cost $5.50.
Weight of apple to be purchased = 7.9 lbs.
Cost of the apples = Weight of apples × unit price
= 7.9 × 5.50 = 43.45.
So the cost of 7.9 pounds of apple will be $43.45.
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the numbers in this sequence increase by 8 each time ,what would be the closest to 100
The number in the arithmetic sequence close to 100 is 102
What is Arithmetic Progression?An arithmetic progression is a sequence of numbers in which each term is derived from the preceding term by adding or subtracting a fixed number called the common difference "d"
The general form of an Arithmetic Progression is a, a + d, a + 2d, a + 3d and so on. Thus nth term of an AP series is Tn = a + (n - 1) d, where Tₙ = nth term and a = first term. Here d = common difference = Tₙ - Tₙ₋₁
Sum of first n terms of an AP: Sₙ = ( n/2 ) [ 2a + ( n- 1 ) d ]
Given data ,
Let the arithmetic sequence be represented as A
Now , the equation will be
A = 14 , 22 , 30 , 38 ...
Now , the common difference of the AP is d = 8
The 12th term of the AP is
a₁₂ = 14 + ( 12 - 1 ) d
a₁₂ = 14 + 11 ( 8 )
a₁₂ = 14 + 88
a₁₂ = 102
Hence , the 12th term of the AP is 102
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a particular brand of shirt comes in 25 colors, has a male version and a female version, and comes in 3 sizes for each sex. how many different types of this shirt are made?
There are 150 different types of this shirt made.
There are 25 different colors, two different versions (male and female), and three different sizes for each. To calculate the total number of different types of shirt, we can use the formula: (25 colors) x (2 versions) x (3 sizes) = 150. Therefore, there are 150 different types of this shirt made.
To further illustrate, each color is available in both male and female versions, and each version has three sizes (small, medium, and large). As a result, 25 colors x 2 versions x 3 sizes = 150 different types of shirts. So, if you wanted a yellow shirt in size medium, there would be a total of 150 different types of this shirt to choose from. There are 150 different types of this shirt made.
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subtract 20 by 6 in fraction form (answer not -14)
Answer:
20/6 = 3.33
20 - 6 = 14