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Vika [28.1K]
3 years ago
6

Solve for y.

Mathematics
2 answers:
kenny6666 [7]3 years ago
5 0

Answer:

y=−1/7

for the picture is y=-57/7

Step-by-step explanation:

<h3>1. 8= -7y +7</h3>

Switch:sides

-7y+7=8

subtract 7 from both sides

-7y=1

divide both sides by -7

y=−1/7

<h3>2.so for 8/y+7=-7</h3>

multiply both sides by (y+7)

8/y+7(y+7)=-7(y+7)

simplify 8=-7(y+7)

flip

-7(y+7)=8

divide both sides by -7

y+7=-8/7

subtract 7 from both sides

and simplify

y=-57/7

DaniilM [7]3 years ago
4 0
The awnser is Y=-1/7
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it takes an air pump 5 minutes to fill a twin sized air mattress (39 by 8.75 by 75 inches). how long will it take to fill a quee
Shalnov [3]

It take 8.205 minutes to fill a queen sized mattress.

<h3>What is volume?</h3>

'Volume' is a mathematical quantity that shows the amount of three-dimensional space occupied by an object or a closed surface.

Given dimensions:

Twin sized air mattress (39 by 8.75 by 75 inches).

Queen sized mattress (60 by 8.75 by 80 inches)

Now, Volume of twin sized mattress

=39* 8.75* 75

= 25593.35 cubic inch

Volume of queen sized mattress,

=60* 8.75* 80

= 42000 cubic inch

as, To fill 25593.35 cubic inch it takes 5  minutes

so, to fill 1 cubic inch = 5/25593.35

and, So to fill 42000 cubic inch it will take = 42000* 5/25593.35

=8.205 minutes

Learn more about this concept here:

brainly.com/question/10980137

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7 0
2 years ago
What should be done so that the expression will have a value of 10?<br><br> 12 - 2 + 2 2 ÷ 8
Liula [17]
Answer: 10
use (PEMDAS)
P parentheses ()
E exponents
M multiplication • , () , x
D division
A addition +
S subtraction -
Explanation:
There are no parentheses.
There are exponents.
The multiplication is the exponents.
There is division.
There is addition and subtraction.
-how to solve-
First, do 2 to the second power and get 4.
Next, do 12-2+4 divided by 8.
Next do multiplication: there’s no more.
Next do division: you can’t do 4 divided by 8 so instead, do 12-2 = 10 plus 8.
Hope this helps!
3 0
3 years ago
Pls I need help
Lelu [443]

(1) A part to whole ratio compares different parts of the group to each others is true.

(2)  the ratio 3:1 can also be written as 1 to 3 is false.

(3) A part to whole ratio can be written as a fraction, a decimal, and a percent is true.

(4) two term and three term ratios compare quantities measures in different units is false.

(1) A ratio has two parts, a numerator and a denominator.

Example: if we have 2 oranges and 3 apples in a fruit basket.

  • fruits ratio = 2:3
  • total fruits ratio = 5
  • fraction of orange = \frac{2}{5}
  • fraction of apple = \frac{3}{5}

This ratio compares a part of each fruit to the whole

Thus<em>, a part to whole ratio compares different parts of the group to each others is</em> true.

(2) The ratio 3:1 is written as \frac{3}{1} =3.

Thus, <em>the ratio 3:1 can also be written as 1 to 3 is</em> false.

(3) the ratio 2:3, has the following fractions, decimal and percentage with respect to whole ratio;

  • <em>fraction</em> of 2 = \frac{2}{5}, <em>decimal</em> = 0.4, <em>percentage</em> = 40%
  • <em>fraction</em> of 3 = \frac{3}{5}, <em>decimal</em> = 0.6, <em>percentage</em> = 60%

Thus,  <em>a part to whole ratio can be written as a fraction, a decimal, and a percent is</em> true.

(4) the units of the quantities compared have to be the same in order to find their ratios.

Thus, <em>two term and three term ratios compare quantities measures in different units is</em> false.

Learn more here:brainly.com/question/2284943

6 0
3 years ago
Solve i don't understand it with letters
fredd [130]

Answer:

Isolate the variable by dividing each side by factors that don't contain the variable.

y = \frac{f}{kr}

8 0
3 years ago
Read 2 more answers
A jar of marbles contains 5 blue 12 red, and 8 yellow marbles. what is is probability that you you select a blue marble, keep it
Natali5045456 [20]

Answer:

Step-by-step explanation:

Add the number of marbles together then you but the number of blue ones first 5 to 25 chances

6 0
3 years ago
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