Sean needs to figure out how much paint he needs in order to cover all of the sides of his ramp. what is the surface area of the ramp?

a) 102 cm2

b) 210 cm2

c) 258 cm2

d) 432 cm2

Answer:

78.04 square cm

Step-by-step explanation:

Area of shaded region = area of circle - Area of rectangle

[tex] = \pi \: {r}^{2} - l \times w \\ = 3.14 \times {6}^{2} - 7 \times 5 \\ = 3.14 \times 36 - 35 \\ = 113.04 - 35 \\ = 78.04 \: {cm}^{2} [/tex]

Answer:

78.04 cm^2

Step-by-step explanation:

Hope this helps!

Answer:

Acute

Step-by-step explanation:

The peak of the house forms acute angled triangle.

Answer: 5.6

Step-by-step explanation:

5x:8=7:2

Ratio means division

So we can rewrite as

5x/8=7/2

Using cross multiply

5x×2=7×8

10x=7×8

10x=56

X=56/10

X=5.6

The value of X= 5.6

Answer:

x = 5.6

Step-by-step explanation:

Expressing the ratio in fractional form, that is

[tex]\frac{5x}{8}[/tex] = [tex]\frac{7}{2}[/tex] ( cross- multiply )

10x = 56 ( divide both sides by 10 )

x = 5.6

The required mean absolute deviation is 2.1 times the difference between the means of the data sets.

The mean of the values is the ratio of the total sum of values to the number of values.

To find the means of the two data sets, we need to convert the double stem-and-leaf plots into regular frequency distributions.

To calculate the mean of this data set, we can use the formula:

Mean of Giavano's = (sum of values) / (number of values)
Mean = [31+32+33+36+42+44+46+52+63+68+]/10
Mean= 44.7

Mean of brick oven = (sum of values) / (number of values)
Mean = 38+57+58*2+66+69+74+77+78+79 / 10 = 65.5

Difference of the mean = 65.5-44.7
MAD = 10

According to the question, a ratio of the difference of mean to MAD,
= 65.5 - 44.7 / 10 = 2.1

Thus, the required mean absolute deviation is 2.1 times the difference between the means of the data sets.

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The answer is -1 or d, because -1 1/2 and 3/2 are equal, except for the fact that -1 1/2 is negative.

Answer:

I am not answering that lol

Step-by-step explanation:

Answer:

plz insert the graph, ill revise my answer

Step-by-step explanation:

Answer:

This is not an equation, so m's value cannot be determined.

Step-by-step explanation:

Answer:

86%

Step-by-step explanation:

1) divide 2750 by 3201 to get a part/whole ratio for a percent

2) divide and get 85.91%

Answer:

x = 85.9%

Step-by-step explanation:

Step 1:  Make an equation

[tex]3201 * x = 2750[/tex]

[tex]3201x = 2750[/tex]

Step 2:  Divide both sides by 3201

[tex]3201x / 3201 = 2750 / 3201[/tex]

[tex]x = 0.859...[/tex]

Step 3:  Convert to percentage

[tex]x = 0.859... * 100[/tex]

x = 85.9%

Answer: x = 85.9%

C. 33π in^2

Here is why:

The formula for the surface area of a cone is:

[tex]SA=\pi r^2+\pi rl[/tex]

We can plug in the numbers from the picture, but we will keep π and not put it as 3.14, since the answer choices are in π.

[tex]SA=(\pi *3*3)+(\pi *3*8)[/tex]

[tex]SA=9\pi +24\pi[/tex]

SA = 33π

Answer is:

33π in^2

Answer:

you could have asked nicely

Step-by-step explanation:

Answer:

70

Step-by-step explanation:

There are 8 choices for the first member, 7 for the second, 6 for the third, and 5 choices for the fourth member (because once you pick someone as a member, they cannot be picked again)

So you have:

8*7*6*5 = 1680

However, we realize that in this particular problem, order DOES NOT matter. (for example, ABCD is the same as DCBA.)

So we divide 1680 by 4! (4*3*2*1) to end up with 70.

You do this because because there are 4! ways to arrange 4 people in a line, and since order doesn't matter, only one of those arrangements counts.

Answer: B

Step-by-step explanation:

I guessed and I got it right

Answer:

C

Step-by-step explanation:

The equation of a parabola in vertex form is

y = a(x - h)² + k

where (h, k) are the coordinates of the vertex and a is a multiplier

Here (h, k) = (8, - 14), thus

y = a(x - 8)² - 14

To find a substitute (5, 13) into the equation

13 = a(5 - 8)² - 14

13 = a(- 3)² - 14

13 = 9a - 14 ( add 14 to both sides )

27 = 9a ( divide both sides by 9 )

a = 3

Thus

y = 3(x - 8)² - 14 → C

Answer:

Step-by-step explanation:

It would be C) 100,000

An easy way to remember this, is if your multiplying numbers that end in zero; you simply multiply the number in their 10th place together or hundredths (and so on). Then add the numbers you have in the numbers you multiplied, but it only works if both numbers have 0's and the 0's are at the end.

Ex. 60 x 50+ n

     6x5=30

        3,000

Answer:

140

Step-by-step explanation:

183-37=146

Answer: 146beads

Step-by-step explanation:

Eva has 183beads

She used 37beads

How many left

To get that, you will deduct the used from the exact value

=183-37

=146beads

Final answer:

The volume of the cylinder is 1580.64 cubic inches.

Explanation:

To find the volume of a cylinder, we can use the formula V = πr²h, where V is the volume, r is the radius of the base, and h is the height.

In this case, the radius, r, is 6 inches and the height, h, is 14 inches.

So, the volume is calculated as follows:

V = π(6²)(14) = 3.14(36)(14) = 1580.64 cubic inches.

Answer:

113.04 cubic inches

Step-by-step explanation:

V=π * r^2 *(h/3)

V= 3.14 * 36 * (3/3)

V = 3.14 * 36 * 1 = 113.04

Answer:

25.12

Step-by-step explanation:

Answer:

128

Step-by-step explanation:

Answer:

1) 5×5×5

2) False

3) False

Step-by-step explanation:

5³ basically means 5 is multiplied thrice, i.e

5 × 5 × 5

4² = 4×4 = 16

4² is 16, not 8

(-3)² = -3 × -3 = 9

-(3)² = -9

Answer:

5×5×5

False

False

Answer:

20260

Step-by-step explanation:

The area of the side lengths is base (75) * slant height (97.5) * 1/2 *4 = 14635

The area of the base is 75^2 = 5625

Add them together ot get 20260

Answer:

C

Step-by-step explanation:

The equation of a parabola in vertex form is

y = a(x - h)²  + k

where (h, k) are the coordinates of the vertex and a is a multiplier

Given

y = 2x² + 12x + 1

To express in vertex form use the method of completing the square.

The coefficient of the x² term must be 1 , thus factor out 2 from 2x² + 12x

y = 2(x² + 6x) + 1

add/ subtract ( half the coefficient of the x- term)² to x² + 6x

y = 2(x² + 2(3)x + 9 - 9) + 1

  = 2(x + 3)² - 18 + 1

  = 2(x + 3)² - 17 → C

Answer:

answer : C    2(x-3)²-17

Step-by-step explanation:

hello :

answer : C    2(x-3)²-17

calculate :   2(x-3)²-17 = 2(x²-6x+9)-17 = 2x²-12x+18-17

                  2(x-3)²-17 = 2x²-12x+1.....(right)

Answer:

1.  Distribute the 3

Step-by-step explanation:

3(6+x)=24

You can do one of two things

1.  Distribute the 3

3*6+3x=24

Or

you can divide each side by 3

The only reason it is a good choice to divide each side by 3 is that 24 is divisible by 3

3(6+x)/3=24/3

6+x = 8

Either answer is an acceptable 1st step

Answer: 3/27

Step-by-step explanation:

Multiply both numbers by 3 so that the denominator is 27

The required fraction is 3/27 is 1/9 with a denominator of 27.

Here, we have,

given that,

we have to Rewrite 1/9 with a denominator of 27

so, we get,

the fraction is 1/9

now, we need a denominator of 27

let, x must be multiplied to make the denominator of 27

i.e. 9*x = 27

or, x = 3

so, we get,

Multiply both numbers by 3 so that the denominator is 27.

i.e. 1/9 = 3/27

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Answer:

because he cleverly confuses the trolls until dawn

Gandalf was able to save the dwarves from the trolls in The Hobbit because he cleverly confuses the trolls until dawn.

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Answer:

104

Step-by-step explanation:

First, put the word equation into a numerical equation.

-4+5x=7x-212                            This is our equation

-4=2x-212                                  I subtracted 5x from both sides

208=2x                                     I added 212 to both sides

104=x                                         I divided both sides by 2

To solve the problem, we can set up an equation and solve for the variable 'x'. The number is x = -25.

To solve this problem, we can translate the given information into an equation. Let's assume the number is 'x'. The sum of -4 and 5 times 'x' is -4 + 5x. The equation becomes 3(-4 + 5x) = 7x - 212. We can simplify this equation and solve for 'x' to find the number.

First, distribute the 3 to -4 and 5x, which gives us -12 + 15x = 7x - 212. Then, combine like terms by subtracting 7x from both sides, which gives us -12 + 8x = -212. Next, add 12 to both sides to isolate the variable, resulting in 8x = -200. Finally, divide both sides by 8 to solve for 'x'. The number is x = -25.

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Answer:

0.007

Step-by-step explanation:

( 0.006)  6 is the first significant number.

The number next to it is seven.  (0.0067) in which 7 is greater than 5.

therefore, add 1 .

the final answer is 0.007

0.006772 rounded to 1 significant figure is 0.

We round off numbers to make them easier to remember and it also keeps its value approximately to the place it has been rounded off.

To round off any number to any place we'll look for the digit next to that place and if it is equal to or greater than 5 we'll add one to the previous digit and make all the digits after it zeroes and if the digit is less than 5 we do not add one to the preceding digit and simply make all the digit after it to zeroes.

Given,  0.006772  and we'll round this to 1 significant figure means only one digit it will have after the decimal place.

So,  0.006772

= 0.006770

= 0.00677

= 0.00680

= 0.00700

= 0.007

= 0.010

= 0.01

= 0.00

= 0.

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Answer:

x=-2/7,y=8/7

Step-by-step explanation:

Simultaneous equation

y=3x+2....(1)

2x-3y=8...(2)

Substitute (1) into (2)

2x-3(3x+2)=8

2x-9x-6=8

Collect like terms

-7x=8-6

-7x=2

Divide both sides by-7

X=-2/7

Substitute the value for x into (1)

y=3(-2/7)+2

y=-6/7+2

Lcm be 7

y=-6+14/7

y=8/7

Therefore x=-2/7,y=8/7

Answer:

the answer is a

Step-by-step explanation:

Answer:

a. x=-1/3   y=2

b. x=-166  y=34

c. x=16/3   y=-1/9

Step-by-step explanation:

Answer:

d. 9.96

Step-by-step explanation:

Trust me, I kept googling this for almost an hour.

The Average of the Dinner is 20.66.

In mathematics, the middle value—which is determined by dividing the sum of all the values by the total number of values—is the average value in a set of numbers. To calculate the average of a set of data, add up all the values and divide the result by the total number of values.

The data for dinner is:

18.8, 22.13, 20.79, 24.82, 16.74

The Average of the Dinner is

= ( sum of all data for dinner)/ Total Number of Dinner

As, sum of all data for dinner = (18.8 + 22.13 + 20.79 + 24.82 + 16.74)

                                                =103.28

and, Total Number of Dinner = 5

Now put the values we get

= (18.8 + 22.13 + 20.79 + 24.82 + 16.74) / 5

= 103.28/ 5

= 20.656

= 20.66

Thus, the average of the dinner is 20.66

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