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2 years ago

10. The perimeter of the rectangle below is 30 inches. Find the value of x. 5x X-3

Mathematics

1 answer:

Zigmanuir [339]2 years ago

4 0

The answer is 3. This is because the perimeter is 30 so 5x+5x+x-3+x-3 = 30. Thus you have 12x-6=30 so x = 3

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Essential: Solve the proportions step by step

vazorg [7]

Answer:

The value of r= $\frac{-106}{47}$

The value of x= $\frac{83}{32}$

Step-by-step explanation:

Given that,

A) $\frac{2r-2}{7r+10} = \frac{9}{8}$

Now,

$\frac{2r-2}{7r+10} = \frac{9}{8}$

8(2r-2)=9(7r+10)

16r-16=63r+90

-16-90=63r-16r

-(16+90)=47r

-106=47r

r= $\frac{-106}{47}$

B) $\frac{x+4}{9} = \frac{3(x-2)-1}{5}$

Now,

$\frac{x+4}{9} = \frac{3(x-2)-1}{5}$

5(x+5)=9[3(x-2)-1]

5x+25=9[3x-6-1]

5x+25=9[3x-7]

5x+25=27x-63

25+63=27x+5x

83=32x

x= $\frac{83}{32}$

6 0

3 years ago

Which sentence describes the correct use of flexible spending account (FSA) funds?

mr_godi [17]

The funds in the account remain for as long as you’re employed by the company sponsoring the FSA.

6 0

3 years ago

Write the times of four trains as 12 hr. clock a. 14:32 b. 16:30 c. 06:45 d. 10:29

romanna [79]

Answer:

a 2:32

b 4:30

c 6:45

d 10:29

6 0

2 years ago

Should any factors be accounted for when explaining how to solve an equation?

Veronika [31]

Yes, it should be taken into account

3 0

3 years ago

If a is the average (arithmetic mean) of 4x and 7, b is the average of 5x and 6, and c is the average of 3x and 11, what is the

Debora [2.8K]

Answer:

2x+4

Step-by-step explanation:

Given that a is the average (arithmetic mean) of 4x and 7, b is the average of 5x and 6, and c is the average of 3x and 11

By definition of arithmetic mean,

we have $a=\frac{4x+7}{2} \\b=\frac{5x+6}{2} \\c=\frac{3x+11}{2}$

Let us calculate sum of a,b,c in terms of x

a+b+c = $\frac{4x+7+5x+6+3x+11}{2} \\=6x+12$

Average = sum/3 = $\frac{6x+12}{3} =2x+4$

7 0

3 years ago