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Murrr4er [49]
3 years ago
5

An airplane 30,000 feet above the ground begins descending at the rate of 2000 feet per minute. Assume the plane continues at th

e same rate of descent. How long will it take the plane to reach 12,000 feet above the ground
Mathematics
1 answer:
azamat3 years ago
7 0

Answer:

Step-by-step explanation:

Let the time taken to reach 12,000 feet = x

Distance traveled in 1 minute = 2000 ft

Distance traveled in 'x' minute = 2000 * x = 2000x

30,000 - 2000x = 12000

Add 2000x to both sides

30,000 = 12000 + 2000x

Now subtract 12,000 from both sides

30000 - 12 000 = 2000x

2000x =  18 000

Divide both sides  by 2000

x = 18000/2000

x = 9 minutes

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43 is how many 1/2 cup servings there are in 22 1/2.

7 0
3 years ago
Write two equivalent expressions that represent the rectangular array below.
Ainat [17]
Area formula for rectangles: L x W

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You know that the expressions are equivalent, because when you solve for a you get a = 5/8 or 0.625
3 0
3 years ago
3 3/5 + 9 3/5 answer with a mixed number in simplest form
Romashka [77]

Both fractions have the same denominator so it's going to be easy. First set up your equation:

3 \frac{3}{5} + 9 \frac{3}{5}

Add the whole numbers:

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Now add the fractions:

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add both together:

12 + \frac{6}{5} = 12 \frac{6}{5}

\frac{6}{5} is an improper fraction so change it:

12 \frac{6}{5} = 13 \frac{1}{5}

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3 0
3 years ago
In ABC, what is the value of x<br><br> 5.5<br> 6.5<br> 55<br> 65
vekshin1

<em>Answer:</em>

( B ) x = 6.5

<em>Step-by-step explanation:</em>

We know that all the angles of a triangle equal 180 when added together. So lets make an equation for this question.

(10x-10) + (10x+8) + 8x = 180

I just took all the angles and added them together to make 180. Now solve for x.

10x - 10 + 10x + 8 + 8x = 180 <em>(combined like terms)</em>

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6 0
3 years ago
Read 2 more answers
Please help me answer the question.ghvjhbikb
rjkz [21]

Answer:

240units^2

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The formula for area on a triangle is 1/2 x b x h, so you do 4 x 10 x 1/2, giving you 20, there are two of these triangles so you double it to 40.

Then for the rectangle below you do l x w, or 10 x 20 giving 200.

You then add it all together, 200+20+20=240 units squared.

Hope this helps!

6 0
3 years ago
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