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igomit [66]
3 years ago
9

Hep me 15pts surface area of a prism.

Mathematics
1 answer:
ella [17]3 years ago
6 0

Answer:

A=360in^2

Step-by-step explanation:

there are 5 faces, 2 triangular, 3 rectangular

Triangular:

A=(9 * 10)/2=45

Since there are 2 of them the total is 90 in^2 for the triangles

Rectangular:

A=10*9=90

Since there are 3 the total is 270in^2

Total surface area is A=270+90=360in^2

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The sum of the ages of two sisters is 36. The younger sister is 6 more than a fifth of the older sister's age. How old is each s
melomori [17]

Answer:

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36

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2. =42 is the answer

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7 0
2 years ago
How many plants spaced every 6 in. are needed to surround a circular walkway within a 25 ft. radius?
e-lub [12.9K]
Consider the following formula to find the circumference of circle
C= 2^_r
here r is radius of circle
the radius of circular is 25 ft.
Therefore circumference is as follows
C = 2^_r

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= 157.
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7 0
3 years ago
The height, h, in feet of a rock above the ground is given by the equation h = -16t^2 + 24t + 16, where t is the time in seconds
boyakko [2]

The rock will hit the ground at 2 seconds.

Explanation:

Given that the height, h, in feet of a rock above the ground is given by the equation h=-16t^2+24t+16, where t is the time in seconds after the rock is thrown.

We need to determine the time at which the rock will hit the ground.

To determine the time, let us equate the height h = 0 in the equation h=-16t^2+24t+16, we get,

0=-16t^2+24t+16

Switch sides, we have,

-16 t^{2}+24 t+16=0

Let us solve the equation using the quadratic formula.

Thus, we have,

t=\frac{-24 \pm \sqrt{24^{2}-4(-16) 16}}{2(-16)}

Simplifying, we get,

t=\frac{-24 \pm \sqrt{576+1024}}{-32}

t=\frac{-24 \pm \sqrt{1600}}{-32}

t=\frac{-24 \pm 40}{-32}

Hence, the two values of t are

t=\frac{-24 + 40}{-32}   and   t=\frac{-24 -40}{-32}

Simplifying the values, we get,

t=\frac{16}{-32}  and  t=\frac{-64}{-32}

Dividing, we get,

t=-\frac{1}{2}  and  t=2

Since, t cannot negative values, we have,

t=2

Thus, the rock will hit the ground at 2 seconds.

8 0
3 years ago
Pls help me this question is bad
musickatia [10]

Answer:

using law of indices

the answer is 1

8 0
2 years ago
Monthly spending : $46,$62,$63,$57,$50$42$56$40 its median, mode and range
ozzi
Mean = $52
median = $53
no mode
range = 63 - 40 = $23
6 0
3 years ago
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