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Harman [31]
3 years ago
11

The base of a triangular prism is a right triangle with a base of 5 inches, a height of 12 inches, and a third side length of 13

inches. The height of the prism is 21 inches. Find the surface area of the prism.
Mathematics
1 answer:
myrzilka [38]3 years ago
3 0

Answer:

690 sq in

Step-by-step explanation:

SA = LA + 2B     where LA is the lateral area and B is the area of the base

The triangular base has an area of

B = 1/2bh 1/2(5)(12) = 30

LA = ph  where p is the perimeter of the base and h is the height of the prism

LA = (12 + 5 + 13)(21) = 30(21) = 630

SA = 630 + 2(30) = 630 + 60 = 690 sq in

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Answer:

The answer is B

Step-by-step explanation:

Because 175% means its more than what it was before. Hope this helped!!

5 0
2 years ago
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line pass through the line (-3, -7.5)tahila determined that the equation of line n is y=0.5x explain the error tahila made while
Tasya [4]

The equation of the line will be (assuming the y-intercept equal to zero):

y = 2.5*x

<h3>What is Tahila's mistake?</h3>

We know that we have a linear equation of the form:

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Such that we know that the line passes through (-3, -7.5), notice that the proposed equation is:

y = 0.5*x

If you evaluate that in -3, you get:

y = 0.5*-3 = -1.5

So this line does not pass through (-3, -7.5).

If we assume that b = 0 in the linear equation, then we can find the value of a as:

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4 0
1 year ago
A function is given. h(t) = −t + 6/5 ; t = −3, t = 1
artcher [175]

Answer:

h(-3) = 4.2 or 21/5

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Step-by-step explanation:

Plug in -3 for t.

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Plug in 1 for t.

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8 0
1 year ago
tickets for a cinema costs £4 and £5. There were 223 customers who paid a total of £936. How many bought £4 tickets
noname [10]

The number of people who bought £4 tickets are 139.

<h3>How to illustrate the equation?</h3>

Let £4 tickets be x

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From equation i

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Collect like terms

y = 84

This implies that the number of £5 tickets is 84.

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x + 84 = 223

x = 223 - 84

x = 139

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