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torisob [31]
3 years ago
5

The net of a pyramid is shown below.

Mathematics
1 answer:
sveticcg [70]3 years ago
8 0

Answer:

80 in^2

Step-by-step explanation:

8*4=32

32/2=16

16= One triangle

16*4 triangles=64

4*4=16

64+16=80

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-2 ×^2 - 4y +6. x=-3. y=-2 <br> evaluate ​
gladu [14]

Answer:

<u><em>Answer is below</em></u>

Step-by-step explanation:

<em><u>-2 ×^2 - 4y +6</u></em>

<em><u>Evaluate simply means to form an idea of something</u></em>

<em><u>So Evaluate for x=−3,y=−2</u></em>

<em><u>−2(−3)2−(4)(−2)+6</u></em>

<em><u>−2(−3)2−(4)(−2)+6</u></em>

<em><u>Answer =−4</u></em>

8 0
3 years ago
A recommendation for wheelchair ramps is that the rise-to-run ratio be no greater than 1:12. This ensures that the ramps are nav
patriot [66]

Answer:

a. 12 feet b. 12 feet 0.5 inches c. 8.33 %

Step-by-step explanation:

a. How far out horizontally on the ground will it protrude from the building?

Since the rise to run ratio is 1:12 and the building is 12 inches off the ground, let x be the horizontal distance the ramp protrudes.

So, by ratios rise/run = 1/12 = 12/x

1/12 = 12/x

x = 12 × 12

x = 144 inches

Since 12 inches = 1 foot, 144 inches = 144 × 1 inch = 144 × 1 foot/12 inches = 12 feet

b. How long should the ramp be?

The length of the ramp, L is gotten from Pythagoras' theorem since the ramp is a right-angled triangle with sides 12 inches and 144 inches respectively.

So, L = √(12² + 144²)

= √[12² + (12² × 12²)]

= 12√(1 + 144)

= 12√145

= 12 × 12.042

= 144.5 inches

Since 12 inches = 1 foot, 144.5 inches = 144 × 1 inch + 0.5 inches = 144 × 1 foot/12 inches + 0.5 inches = 12 feet 0.5 inches

c. What percent grade is the ramp?

The percentage grade of the ramp = rise/run × 100 %

= 12 inches/144 inches × 100 %

= 1/12 × 100 %

= 0.0833 × 100 %

= 8.33 %

6 0
2 years ago
A painter needs 412 gallons of white paint. He has 1 1/4 gallons of white paint in his truck, and another 3/6 gallon of white pa
Aneli [31]

Answer:

Im pretty sure the answer is 410 2/3

I hope this helped to answer your question.

Have a great day! :)

8 0
3 years ago
Use a sum or difference identity to evaluate.<br><br> sin15∘
DIA [1.3K]
Don’t open that link it’s takes all your information
5 0
3 years ago
If y = 9x − 7, which of the following sets represents possible inputs and outputs of the function, represented as ordered pairs?
Crazy boy [7]

Answer:

0,-7 8,567;7,57,6,6,6,6,6,78,3,5

8 0
3 years ago
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