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3 years ago

8

a classroom measures 32 ft long, 25ft wide, and 9ft high. The comb9ned area of doors and windows is 140ft. What is the remaining

area of the four walls of the room

1 answer:

vovikov84 [41]3 years ago

4 0

Answer:

886 ft^2

Step-by-step explanation:

2×l×h+2×b×h=2h(l+b)

2×9(32+25)=18×57=1026 ft^2

1026-140=886ft^2

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polet [3.4K]

Answer:

x^2 + 4x-21

Step-by-step explanation:

I believe this is it

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3 years ago

A building casts a shadow that is 50 feet in length. If the distance from the end of the shadow to the top of the building is 25

vesna_86 [32]

Answer: 244.95 feet

Step-by-step explanation:

This scenario forms the shape of a right angled triangle with the shadow length being the triangle's length and the distance between the end of the shadow to the top of the building being the hypotenuse.

Use Pythagorean theorem:

c² = a² + b²

250² = 50² + b²

62,500 = 2,500 + b²

b²= 62,500 - 2,500

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4 0

3 years ago

Gerald drives 200 miles in 2 1/2 hours. what is gerald's average speed?

Dimas [21]

Answer:

80mph

Step-by-step explanation:

200 divided by 2 1/2 is 80.

3 0

3 years ago

I need help thank you

Juliette [100K]

Answer:

Step-by-step explanation:

The key and the most critical step is to draw the line first. Don't do anything else before that.

(2,-8) (-2,-8)

What you find out is that the y value is always - 8.

So the line has no slope and any x value

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3 years ago

Read 2 more answers

The table below shows the value of Henry's car at the end for each of the first 3 years after it is purchased. The values form a

SVETLANKA909090 [29]

Using a geometric sequence, it is found that the approximate value of the car at the end of the 10th year will be given by:

A. $6,974.

<h3>What is a geometric sequence?</h3>

A geometric sequence is a sequence in which the result of the division of consecutive terms is always the same, called common ratio q.

The nth term of a geometric sequence is given by:

$a_n = a_1q^{n-1}$

In which $a_1$ is the first term.

In this problem, the first term and the common ratio are given, respectively, by:

$a_1 = 18000, q = \frac{16200}{18000} = 0.9$

Hence the equation is:

$a_n = 18000(0.9)^{n-1}$

At the end of the 10th year, the value will be of:

$a_{10} = 18000(0.9)^{10-1} = 6974$

Hence option A is correct.

More can be learned about geometric sequences at brainly.com/question/11847927

#SPJ1

6 0

2 years ago