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Tamiku [17]
3 years ago
9

Use the net to find the surface area of the square pyramid

Mathematics
2 answers:
Black_prince [1.1K]3 years ago
7 0

Answer:

473

Step-by-step explanation:

SpyIntel [72]3 years ago
4 0

Answer:

473

Step-by-step explanation:

The square surface area is 121 (11x11)

For the triangles, you do 16x11, which equals 176 and then divide by 2, to get 88.  Since there are 4 triangles, I did 88x4 and got 352 and then added 121 to get 473

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H(x)=-4x+3;when h(x)=11
liberstina [14]
To solve this, since you know that h(x) is 11 and that it also equals -4x+3, you set them equal to one another which would look like this: 11=-4x+3.
Then, to solve for x, which is what I am assuming the question is asking, you would subtract 3 from both sides to isolate -4x, which would result in this:
-4x=8
Now, to solve for x, divide both sides by -4, and you get your answer which is x=-2
3 0
3 years ago
Please help i have to turn in in 6 mins...thanks :)
denis23 [38]

Answer: ~5

Step-by-step explanation:

It's been awhile for me but I think you do sin=opp/hyp

sin(45)=3sqrt(2)/x

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4 0
3 years ago
Each day, a young person should sleep 9 hours plus 1 4 hour for each year that the person is under 18 years of age. Assuming the
Andre45 [30]

Answer:

y(x) = 9 + 0.25*(18 - x)

Step-by-step explanation:

We have the following variables:

y: hours of sleep

x: age

Each day, a young person should sleep 9 hours

This means that y is 9 added to something

plus 1 4 hour for each year that the person is under 18 years of age.

For each year the person is under 18 years of age, she should sleep 1/4 = 0.25h on top of the 9 hours.

So the equation relating hours of sleep y and age x is:

y(x) = 9 + 0.25*(18 - x)

7 0
3 years ago
Oliver plans to purchase a $1500 certificate of deposit (cd) at his bank. The CD will earn 2.3% interest, compounded semi-annual
vekshin1

Answer:

Step-by-step explanation:

Weren't there more instructions?  Please, share everything about each problem you post here.

Use the compound amount formula:  A = P(1 + r/n)^(nt).

Here we have

A = $1500(1 + 0.023/2)^(2t), where t is the number of years.

3 0
3 years ago
Rhett decides to build a square room for his movie and music collection. If the area of the room is 16x2 − 24x + 9 square feet,
timurjin [86]

Answer:

16x^2 - (12+12)x + 9

16x^2 -12x -12x +9

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(4x-3)(4x-3)

hence length of one side is 4x-3

8 0
2 years ago
Read 2 more answers
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