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2 years ago

What are the steps to solve, 510=x+.21x-.19x

Mathematics

1 answer:

PtichkaEL [24]2 years ago

4 0

Answer:

500

Step-by-step explanation:

510=x+.21x-.19x

510=(1+.21-.19)X

510=1.02X

X=510/1.02

X=500

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the length of rectangular desk is 4 times its width. if the desks perimeter is 30 what is the desks area????

Ulleksa [173]

4×3=12
12+12=24, 3+3=6
24+6=30

So 12 × 3 = 36 square ft.

6 0

3 years ago

Find the length of GI in the triangle below. Show your work.

love history [14]

Answer:

The length of GI is 90.06 units

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

GH = 60 units

HI = 42 units

∠H = 123°

2. Using the Law of Cosines, we can find the length of GI, this way:

GI² = GH² + HI² - 2 * GH * HI * cos ∠H

Replacing with the real values:

GI² = 60² + 42² - 2 * 60 * 42 * cos ∠123°

GI² = 3,600 + 1,764 - 2 * 60 * 42 * -0.545

GI² = 3,600 + 1,764 + 2,746.8

GI² = 8,110.8

GI = √ 8,110.8 = 90.06 units

4 0

3 years ago

Read 2 more answers

Evaluate if m = 16 and p = 2. 1 2 m + 3p A) 10 B) 14 C) 18 D) 48

Ivenika [448]

Put the values of m and p to the expression:

$\dfrac{1}{2}m+3p\\\\m=16;\ p=2\\\\\dfrac{1}{2}\cdot16+3\cdot2=8+6=14\to B)$

4 0

3 years ago

It would take an hour for plane A to meet plane B which is flying towards it. If the distance between them will be 200 miles aft

sammy [17]

Let a = speed of the plane A, and b = speed of plane B.
(Assume that the net effect of the wind is negligible.)
From the first sentence, the distance between A and B after each travels for 1 hour is a + b miles. From the second sentence, after 45 minutes, or 0.75 hour, the distance between A and B is 200 miles. Plane a has traveled 0.75a, while plane B has traveled 0.75b.
Hence a + b = 0.75a + 0.75b +200
==> 0.25(a + b) = 200.
==> a + b = 800.
Therefore planes A and B are 800 miles apart now.

3 0

3 years ago

Read 2 more answers

Please help with 7a and 7b. The picture above is irrelevant to the problem. If possible explain or show your work. Thank you!!!!

ad-work [718]

If the ratio is 4:3 divide the larger can by 4 which in a) is 25 then multiply by 3 to get surface area of smaller can which would be 75 square inches.

In part b) do the same so 150 divided by 4 is 37.5 multiplied by 3 is 112.5 cubic inches.

It doesn't matter if it is surface area or volume you still use the same ratio of 4:3

3 0

2 years ago