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Harrizon [31]
3 years ago
5

If the geometric mean of a and 28 is 16 sqrt 7 find a

Mathematics
2 answers:
kozerog [31]3 years ago
8 0

Answer:

a = 64

Step-by-step explanation:

The geometric mean of 2 numbers a and b is \sqrt{ab} , then

\sqrt{28a} = 16\sqrt{7} ( square both sides )

28a = (16\sqrt{7} )² = 1792 ( divide both sides by 28 )

a = 64

adelina 88 [10]3 years ago
8 0

Answer:

a = 64

Step-by-step explanation:

The geometric mean for two numbers is given by :

GM = sqrt(ab)

16 sqrt(7) = sqrt(a*28)

Square each side

(16 sqrt(7))^2 = (sqrt(a*28))^2

256*7 = 28a

1792 = 28a

Divide each side by 28

1792/28 = 28a/28

64 = a

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Svetlanka [38]

Answer:

<u>$71.33</u>

Step-by-step explanation:

An automobile warranty costing = $856

It is required to make 12 equal payments

So, we need to divide $856 over 12

So, the average payment = 856/12 = $71.33

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3 years ago
Draw a line representing the “rise” and a line representing the “run” of the line. State the slope of the line in the simplest f
irina1246 [14]

Answer:

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Step-by-step explanation:

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2 years ago
A rectangle’s length is 6 more than 4 times its width. If the perimeter is 42, how long is the rectangle
Ainat [17]

The Length of the rectangle is 18 unit.

<h3>What is the Perimeter of a Rectangle?</h3>

Perimeter of rectangle = 2(length + width)

Given the following:

Let x represent the width of the rectangle

Width of the rectangle = x

Length of the rectangle = 4x + 6

Perimeter of rectangle = 42 units

Therefore, we would write the following equation to find x based on the formula for finding the perimeter of a rectangle:

2(4x + 6 + x) = 42

2(5x + 6) = 42

10x + 12 = 42

10x = 42 - 12

10x = 30

10x/10 = 30/10

x = 3

The width (x) = 3.

Length of the rectangle = 4(3) + 6

Length of the rectangle = 18 unit.

Learn more about perimeter of rectangle on:

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7 0
2 years ago
Bob gets paid an annual salary of $30,000 and earns 5% commission on all sales he makes. If Bob wants to make $6,000 this month,
Evgesh-ka [11]

Answer:

if Bobs want to make $6000 commission he needs to make $120,000 sales.

*choices d

Step-by-step explanation:

in $3000, the 5% of Bobs commission is $150

*solution

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3000 × 0.05 = 150

so just divide the 5% to $6000 to get the sales

*solution

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6 0
3 years ago
Read 2 more answers
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Anna007 [38]
Hi there.
They are basically asking how you could change the graph in a way so that the change in wins isn't as noticeable. This can be done by starting at zero number of wins on the y-axis.

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3 years ago
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