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3 years ago

Ade has two similar scale models of the same pyramid. The first model has a

Mathematics

1 answer:

Aloiza [94]3 years ago

4 0

Answer: 242.7 square inches

Step-by-step explanation:

Hi, to answer this question we have to apply proportions:

The first model has a height of 5 inches and a surface area of 80.9 square inches:

The proportion is : height/ surface area= 5 in / 80.9 in2

For a height of 15 inches

15 in/ x in2

So:

5/80.9 = 15/x

x= 15/ (5/80.9 )

x= 242.7 square inches

Feel free to ask for more if needed or if you did not understand something.

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I need help on this and D is y+4=2(x+1)

kodGreya [7K]

Answer:

A; y- 4 = -2(x + 1)

Step-by-step explanation:

Here, we want to find the equation of the given line

The general form

is ;

y = mx + c

c is the y-intercept which is 2

So we have

y = mx + 2

The x-intercept where y = 0 is 1

Thus;

0 = m(1) + 2

0 = m + 2

m = -2

So the equation of the line is

y = -2x + 2

We can rewrite this in the point-slope form as:

y - 4 = -2(x + 1)

8 0

3 years ago

Polly surveyed 850 teenagers to find out their favorite type of music. She found that 32% of the teenagers surveyed like hard ro

Sergeu [11.5K]

Answer:

Part A: 272 teenagers surveyed like hard rock.

Part B: 200 is the total number of teenagers that Damian surveyed.

Part C: Polly surveyed 850 teenagers to find out their favorite type of music. She found that 132% of the teenagers surveyed like hard rock.

Step-by-step explanation:

Part A: % = 1/100, 32% = 32/100, so 32% of 850 is

32/100 x 850 = 272.

Part B: if Total is T, then 75% of T is = 150, i.e,

75/100 x T = 150, making T subject of relation, then T, Total = 200.

3 0

3 years ago

Read 2 more answers

10 points

pav-90 [236]

Answer:

7.5 in

Step-by-step explanation:

5 0

3 years ago

Algebra 2 test prep pls help

Arada [10]

Answer:

$\frac{\sqrt{117} }{11}$

Step-by-step explanation:

sin²β + cos²β = 1

sin²β = 1 - ( - $\frac{2}{11}$ )²

sin²β = 1 - $\frac{4}{121}$ = $\frac{117}{121}$

sin β > 0 ( Q. ll )

sin β = $\frac{\sqrt{117} }{11}$

7 0

3 years ago

Read 2 more answers

Help me on questions 8 through 12

mr_godi [17]

8. To find the answer you can eather multipy it for each of the sides or you can add it 6 times once for each side
$15\frac{1}{4} \times 6 \\ \\ 15 \frac{1}{4} + 15 \frac{1}{4} + 15 \frac{1}{4} + 15 \frac{1}{4} + 15 \frac{1}{4} + 15 \frac{1}{4}$
9. You basicly do the same thing as the previous problem but with the new numbers and you add each number 2 times

10. For are you multiply Base × Height So all you have to do is Multiply the 2 numbers shown together
$2 \frac{1}{2} \times 5$
11-12 Is the same but witb the new numbers

I hope this helps!

6 0

3 years ago