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3 years ago

Find the value of x if the arithmetic mean of 3 and 3x+5 is 8?

Mathematics

1 answer:

mina [271]3 years ago

8 0

Answer:

Step-by-step explanation:

3x+5=8

Group like terms

3x=8-5

3x=3

Divide both side by the co-efficient of x which is 3

3x/3=3/3

x=1

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Answers for the 2 boxes please :)

Ulleksa [173]

Step-by-step explanation:

2x - 3y = 25

+ (5x + 3y = 10)

=> 7x = 35, x = 5.

Therefore 2(5) - 3y = 25, 3y = -15, y = -5.

The solution pair is (5,-5).

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3 years ago

Read 2 more answers

A box is shaped like a rectangular prism. The length is 6.5 inches, the width is 1.25 inches, and the height is 7 inches.What is

Fantom [35]

To get you answer multiply the length and width twice. Then the length and height twice. Then the width and height twice. And add it all up.
7* 1.25= 8.75
7* 1.25= 8.75
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7*6.5= 45.5
6.5*1.25=8.125
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3 years ago

What is the next two number in the pattern?<br><br>1,8,27,64,125,...

kenny6666 [7]

248
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3 years ago

A recipe requires 5/6 of a cup of sugar. If mrs.Marina is going to make one half of the recipe, how much sugar does she need

NemiM [27]

Answer:

$Half\ of\ the\ recipe\ requires\ \frac{5}{12}\ of\ a\ cup\ of\ sugar.$

Step-by-step explanation:

As given

$A\ recipe\ requires\ \frac{5}{6}\ of\ a\ cup\ of\ sugar.$

i.e

$\frac{5}{6}\ cup\ of\ sugar = 1\ recipe$

As the mrs.Marina is going to make one half of the recipe .

$Thus\ multiply\ above\ by\ \frac{1}{2}.$

We get

$\frac{5\times 1}{6\times 2}\ cup\ of\ sugar = \frac{1}{2}\ recipe$

solving the above

$\frac{5}{12}\ cup\ of\ sugar = \frac{1}{2}\ recipe$

$Therefore\ half\ of\ the\ recipe\ requires\ \frac{5}{12}\ of\ a\ cup\ of\ sugar.$

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3 years ago

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Gre4nikov [31]

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Hundrends place

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