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malfutka [58]
1 year ago
5

The formula m =1/2(a+b) gives the mean M of two numbers a and b

Mathematics
2 answers:
Semenov [28]1 year ago
7 0

Answer:

a = 2m - b , a = 15

Step-by-step explanation:

(a)

m = \frac{1}{2} (a + b) ← multiply both sides by 2 to clear the fraction

2m = a + b ( subtract b from both sides )

2m - b = a

(b)

when m = 19 and b = 23 , then

a = 2(19) - 23 = 38 - 23 = 15

Viefleur [7K]1 year ago
6 0

Answer:

Step-by-step explanation:

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Step-by-step explanation:

To get the average, you need to add up all the numbers then divide the sum by how many numbers you added.

3.5 + 3.0 + 3.0 = 9.5

9.5 / 3 = 3.16

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2 years ago
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A local salesman receives a base salary of $975 monthly. He also receives a commission of 7% on all sales over $1250. How much w
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Answer:

  $17,321.43

Step-by-step explanation:

The amount of monthly income from commissions would have to be ...

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  1125 = 0.07(s -1250)

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He would have to sell $17,321.43 in a month if he needed an income of $2100.

8 0
3 years ago
For the line segment whose endpoints are R(1, 2) and S(6, 7), find the y value for the point located 3 ov`er 4 the distance from
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Answer:

23/4

Step-by-step explanation:

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7 0
3 years ago
Geometry. Very basic.
AveGali [126]

Answer:

A)10.25 cm ; B)5 square cm  

Step-by-step explanation:

A)

Formula:

p=(a+b+c)         [p= perimeter ;  a,b , and c are the side lengths.]

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B)

Formula:

A = 1/2 . b .h    [A=area ; b= base ; h= height]

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6 0
2 years ago
Manny walked around a basketball court. The court is 27 m long and 17 m wide. What is the perimeter of the court? a. What is ask
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= 88 m

5 0
3 years ago
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