Step by step solve this problem -4=r/20-5

Answers

Answer 1

Answer: -4 = $(r)/(20)$ - 5
$(r)/(20)$ - 5 = -4 (Switched sides)
( $(r)/(20)$ - 5)20 = (-4)20 (Multiply both sides by 20)
r-100 = -80
r - 100 + 100 = -80 + 100 (Add 100 to each side)
r = 20

Hope this helped :)

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What is X divided by 2?

Answers

x/2 is the same thing as 1/2x

--Hope This Helps--

The sum of the page numbers of two facing pages in a book is 145. What are the page numbers?

Answers

The answer is 72 and 73. When you add 72+73 it equals 145.

If 2x+z=2y and 2x+2y+z=20 what is the value of y?

Answers

$2x+z=2y\to2x=2y-z\n\nsubstitute\ to\ 2x+2y+z=20:\n\n(2y-z)+2y+z=20\n2y-z+2y+z=20\n4y=20\ \ \ \ /:4\ny=5\to answer$

The value of y is 5

Given,

2x+z=2y

2x+2y+z=20

Now,

From equation substitute the value of 2x,

2x = 2y -z

substitute the value in second equation,

2y -z + 2y + z = 20

Now solve the terms with like variables,

4y = 20

y = 5

Know more about equations,

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If K is the midpoint of HJ, HK equals x+6, and HJ equals 5x-6, then KJ equals?

Answers

Hello,

5x-6=2(x+6)
==>3x=6
==>x=2
==>KJ=HK=x+6=8

Say that the economy is in an expansion, causing wages to increase by six percent. If you previously received a monthly salary of $1,375.00, what will your new monthly salary be? Round all dollar values to the nearest cent.

Answers

1457.50 dollars or 1458 dollars rounded

Answer:

1457.50

Step-by-step explanation

Took the tester

The pay-scale for Pedro's stores is based on the education level of his employees. The education levels are shown for the employees at his two stores. Which matrix correctly displays the total number of employees for the two stores based on their education levels?

Answers

The total of the two matrices is found by adding corresponding elements:

$\left[\begin{array}{cc}5+2&3+3\n22+17&15+27\n13+15&12+18\end{array}\right] =\left[\begin{array}{cc}7&6\n39&42\n28&30\end{array}\right]$

This matches selection A.

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