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Alchen [17]
2 years ago
13

CAN SOMEONE PLEASE HELP ME PLEASE

Mathematics
1 answer:
Natasha2012 [34]2 years ago
7 0

Answer:

∠CDF= 70°

Step-by-step explanation:

there's an easier way to do this which is adding the angles ∠EDG and ∠GDF and then subtracting that from 180° but, checking your work in the same process is a little more work.

First, I'd like to find ∠ADB.

  1. 85°+70°= 155°
  2. 180°-155°= 25°
  3. ∠ADB= 25°

Second, add all the angles together.

  1. 70°+50°+60°+85°+25°= 290°
  2. 360°-290°= 70°
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Brilliant_brown [7]
Write what you know in an equation: 27=30%•X. Divide 27 by .30 to get X alone: 27/.30=90. 27 is 30% of 90 :)
4 0
3 years ago
The length of a room is 2 1/2 feet more than its width. If the perimeter of the room is 80 feet, find its width and length?​
horsena [70]

Answer:

The width is 20.625 and the length is 19.375

Step-by-step explanation:

Let 2 1/2 + w = length

Let w = width

Equation:

2 1/2 + w + w = 80                     Combine liked terms

2 1/2 + 2w = 80                    

-2 1/2         -2 1/2                        Subtract 2 1/2 from both sides

2w  =   77.5

÷ 2     ÷ 2                                    Divide 2 from both sides

w = 41.25

Length:

2 1/2 + 41.25 = 165/4 or 38.75

Width:

41.25

41.25/2 = 20.625

38.75/2 = 19.375

4 0
3 years ago
Madison and Tyler each wrote an expression that is equivalent to 14.1 (19.8 + 7.6). The expressions they created are shown in th
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Answer: Tyler used the distributive property.

Step-by-step explanation:

For the expression:  

Madison wrote:  which is by commutative property of addition.

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Tyler wrote: which is by distributive propery.

The distributive property says that , for a,b,c be any real numbers.

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Step-by-step explanation:

Let t represent the time it will take for both trains to be 640 kilometers apart. It means that the total distance that both trains will covered in t hours is 640 kilometers.

Distance = speed × time

A train leaves Little Rock Arkansas and travels north at 75 kilometers per hour. Distance covered after t hours would be 75 × t = 75t

Another train leaves at the same time and travels south at 85 kilometers per hour. Distance covered after t hours would be 85 × t = 85t

Since the total distance covered is 640 kilometers, then

75t + 85t = 640

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Juli2301 [7.4K]

Answer:

Graphed below.

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The slope of the line is -1/3.

The y-intercept is at (0, 2).

The x-intercept is at (6, 0).

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