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allsm [11]
2 years ago
6

What is the variable equal to? y • 8 = 40 y = 5 y = 320 y = 6 y = 7

Mathematics
1 answer:
noname [10]2 years ago
6 0

Answer:

y = 5

Step-by-step explanation:

Hello there!

Y is our unknown quantity. We need to find for y.

To do this we will isolate the variable so it equals a number that makes the statement for x true.

To solve this, we will use the division property of equality since this is a multiplication equation. y has to be less than 40.

So we will divide 8/8 to isolate y on one side and then do 40/8 (herby the division property of equality)

Then our answer should be y = 5

To double- check this we could simply substitute 5 for y in the equation; 5 • 8 = 40

Therefore this statement holds to be true

Hope this helps you! :)

You might be interested in
Pls help for this question! no wrong answers pls
ankoles [38]

Answer:

41.29 cm²

Step-by-step explanation:

From the question,

Area of the shaded portion = Area of the circle - area of the square.

A' = πr²-L²...… Equation 1

Where A' = Area of the shade portion, r = radius of the circle, L = length of the square, π = pie

Given: r = 4 cm, L = 3 cm

Constant: π = 22/7.

Substitute these values into equation 1

A' = [(22/7)×4²]-3²

A' = 50.29-9

A' = 41.29 cm²

Hence the area of the shaded portion is 41.29 cm²

8 0
3 years ago
(b) The area of a rectangular pool is 5488 m\2 If the length of the pool is 98 m, what is its width?​
mrs_skeptik [129]

Answer:

56

Step-by-step explanation:

To find the area of a rectangle we have the foruma A=WxL.

But we already have the area and length so we can plug that in

5488=Wx98

Now its an algebreic expression.

SInce its multiplying we do the opposite, so we divide 98 on both sides.

98/98 crosses itself out so now its 5488/98. Which equals 56. So now our expression is W=56. To fact check we put the numbers 56 and 98 into the formula to see if we get 5488.

A=56x98

A=5488

7 0
1 year ago
Please help asap 29 pts
Alexeev081 [22]

Answer:

C. 56 is the correct answer, my bad.

Step-by-step explanation:


3 0
3 years ago
Read 2 more answers
Anthony will be competing in a body building competition in 12 months. He initially weighs 160 pounds and by the end of 12 month
aksik [14]
A) 6 pounds per month
3 0
3 years ago
Read 2 more answers
Veronica has been saving dimes and quarters she has 110 coins in all and the total value is 18.50 how many dimes and quarters do
Lady_Fox [76]

This problem can be solved by the chicken rabbits method or you can just do simple algebra.

I.) Chicken and rabbits method

First assume all 110 coins are dimes and none are quarters.

We will have a total value of 11 dollars

Now for each dime we switch out for a quarter, we adds 15 cents to the total value.

18.50-11=7.50 dollars

There are 750/15=50 group of 15 cents in the 7 dollars and 50 cents.

This also meant that we need to switch out 50 dimes for 50 quarters.

So we have 50 quarters.

That first method is very good and very quick once you get the hang of it, now I'm going to show you the algebraic way to solve this.

Let's say there are x dimes and y quarters.

Set up equation

x+y=110

10x+25y=1850

Now solve multiply first equation by 10

10x+10y=1100

subtract

15y=750

y=50

Now we set the numbers of quarters to y so the answer is 50 quarters.

I personally recommend using algebra whenever you can because the practice is very important and you will eventually get really fast at setting up and solving equations. The first method is faster in this case but the second is more generalize, hope it helps.

6 0
2 years ago
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