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MrRissso [65]
3 years ago
13

I need to find the value of X

Mathematics
1 answer:
nirvana33 [79]3 years ago
3 0

Answer:

17.7

Step-by-step explanation:

This figure is a pentagon - a shape with 5 sides. In a pentagon, the figure's angles add to 540.

100 + 7x-4 + 3x + 23 + 9x - 6 + 90 = 540

190 +19x + 13 = 540

203 + 19x = 540

19x = 337

x = 17.7

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A car run 3/4 mile per minute another car can run 4/5 mile per minute.what is the difference in speed in miles per hour?
dybincka [34]

Answer:

3 miles per hour

Step-by-step explanation:

We need to subtract the two numbers to find the difference in speeds

4/5 - 3/4

We need to get a common denominator of 20

4/5 *4/4 - 3/4 *5/5

16/20 - 15/20

1/20  

The car going 4/5 miles per minute is going 1/20 miles per minute faster than the car going 3/4 miles per minute.

The question asks for miles per hour, not miles per minute.  We know  that there are 60 minutes per hour.

1/20 miles per minute * 60 minutes / hour

60/20 miles/hour

3 miles/ hour

The car going 4/5 miles per minute is going 3 miles per hour faster than the car going 3/4 miles per minute.

3 0
3 years ago
45/10 is what in simplest form and a mixed number
Contact [7]
\dfrac{45}{10}=\dfrac{45:5}{10:5}=\dfrac{9}{2}=\dfrac{8+1}{2}=\dfrac{8}{2}+\dfrac{1}{2}=4+\dfrac{1}{2}=4\dfrac{1}{2}
8 0
3 years ago
Which of the following statements is not true about the numbers 7 and -7?
leonid [27]

Answer:

incorrect is They have a sum of -14

4 0
3 years ago
The numerator and denominator of a fraction are in the ratio of 3 to 5. If the numerator and denominator are both increased by 2
butalik [34]

Answer:

The correct answer is A) 5n = 3d and 3n + 6 = 2d + 4

Step-by-step explanation:

hope this is right...

6 0
3 years ago
Graph: y-3=1/2 (x+2)
777dan777 [17]

Answer:

See below

Step-by-step explanation:

y-3=1/2(x+2) Indicates a graph with slope 1/2 that runs through the point (-2,3). I have graphed it below. Hope this helps!

6 0
2 years ago
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