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3 years ago

The length of a rectangular room is 5 feet more than its width. The perimeter of the room is

Mathematics

1 answer:

Roman55 [17]3 years ago

5 0

Answer:

$\displaystyle 39 = W \\ 44 = L$

Step-by-step explanation:

{L = W + 5

{166 = 2L + 2W

166 = 2[W + 5] + 2W

166 = 2W + 10 + 2W

166 = 10 + 4W

- 10 - 10

___________

$\displaystyle \frac{156}{4} = \frac{4W}{4}$

$\displaystyle 39 = W$ [Plug this back into both equations above to get the length of 44 feet; $\displaystyle 44 = L$

I am joyous to assist you anytime.

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2. A man drove 240 miles south at the rate of 60 miles per hour. On the return trip, he drove the rate of 40 miles per hour. The

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$av = \frac{v_{2} - v_{1}}{t_{2} - t_{1}}$

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1 year ago

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Someone help I have no clue how to do this

Travka [436]

Using proportions, it is found that their mom put 90 candies in the bowl.

<h3>What is a proportion?</h3>

A proportion is a fraction of a total amount, and the measures are related using a rule of three. Due to this, relations between variables, either direct or inverse proportional, can be built to find the desired measures in the problem.

For this problem, the total amount is of x, hence, from the text:

Tom's fraction is $\frac{1}{2}x$ .

Carlos' fraction is $\frac{1}{3} \times \frac{1}{2}x = \frac{1}{6}x$ .

Mary's fraction was of: $\frac{3}{5} \times \left(x - \frac{x}{2} - \frac{x}{6}\right) = \frac{1}{5}x$

The remaining fraction after Mary was:

$x - \frac{x}{2} - \frac{x}{6} - \frac{x}{5} = \frac{30x - 15x - 5x - 6x}{30} = \frac{2x}{15}$

This amount is of 12, hence the total number of candies was:

2x/15 = 12

2x = 15 x 12

x = 15 x 6

x = 90.

More can be learned about proportions at brainly.com/question/24372153

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1 year ago

Please help me out!

nikitadnepr [17]

Answer is C.

90-77.5= 12.5

12.5/5.2= 2.40 z-score

90 is the missing answer

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3 years ago

Owen is deciding between two parking garages. Garage A charges an initial fee of $10 to park plus $1.50 per hour. Garage B charg

8090 [49]

Answer:

At 4 hours both options will be $16.00

Step-by-step explanation:

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1 year ago

What is the length of DE?<br> 1 unit<br> 3 units<br> 4 1/2 units<br> 4 2/3units

Mila [183]

Answer:

3 units

Step-by-step explanation:

∠A = ∠E (same arc BD)

∠X share

ΔXDA similar to ΔXBE

XE / XA = XB / XD

(3 + DE) / 9 = 2 / 3

9 + 3DE = 18

3DE = 9

DE = 3

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3 years ago

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