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vekshin1
3 years ago
8

Tina has 3 stacks of 5CDs on each of 3 shelves.how nany CDs does she have

Mathematics
2 answers:
blondinia [14]3 years ago
8 0
Tina has 45 cds in total
eimsori [14]3 years ago
7 0
So this problem written out should look like this: 
3(3 x 5)
Firstly, to simplify this we should multiply 3 x 5. That is 15.
3(15)      This is equal to 3 x15, so that is exactly what we must do.
3 x 15 is equal to 45. Tina has 45 CDs in total.
Hope this helps!
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What does x = ?<br> If you can't see the numbers I can type them
nikitadnepr [17]
So you know that: 

2x+y=14+y
and
5x-y=x+13y

Here you have two equations with two unknown variables: 
If you isolate x from the second equations you get:
x=(7/2)y
Insert that in the first equations and solve for y: 
2*(7/2)y+y=14+y
y=2

Insert that value for y in one of the two equations (i chose the first): 
2x+2=14+2
x=7

Therefore x=7

Hope that helped. 

Actually you could start with isolating x, and then insert that in one of the two equations.
7 0
3 years ago
You are one 8-aristotle students. Camie, your math class president, is designing a geometrical shape flower pots as a fund-raisi
8_murik_8 [283]

Answer:

422332423fund-raising project. The cost of paint color needed is php 1,200 plus php 45 each pot. She estimates that your class will design 80 pots and sell designed pots for php 100 each.

Direction: answer the following questions below then, decide if you are in favor of camie's plan. write your answers on the spacfund-raising project. The cost of paint color needed is php 1,200 plus php 45 each pot. She estimates that your class will design 80 pots and sell designed pots for php 100 each.

Direction: answer the following questions below then, decide if you are in favor of camie's plan. write your answers on the spac

Step-by-step explanation:

fund-raising project. The cost of paint color needed is php 1,200 plus php 45 each pot. She estimates that your class will design 80 pots and sell designed pots for php 100 each.

Direction: answer the following questions below then, decide if you are in favor of camie's plan. write your answers on the spac

8 0
2 years ago
Lupe’s Construction is building a rectangular house that is 16 feet longer than it is wide. They will be putting a 3-foot wide s
mr Goodwill [35]

Answer:

The length of the four pieces of protective strip is 96 feet

Step-by-step explanation:

Let the w be the width of the rectangular house and L is length. Since L = w + 16, its perimeter P = 2(w + L)

= 2(w + w + 16)

= 2(2w + 16)

Since the perimeter of the house P = 136 feet,

136 = 2(2w + 16)

dividing through by 2, we have

136/2 = (2w + 16)

68 = (2w + 16)

collecting like terms, we have

68 - 16 = 2w

52 = 2w

dividing through by 2, we have

w = 52/2

w = 26 feet.

Now, since the side walk is 3 foot wide all around, the width of the house plus sidewalk = w + 3 and the length of the house plus sidewalk = L + 3 = w + 16 + 3 = w + 19.

So, the perimeter of the house plus sidewalk which is the perimeter of the four pieces of protective strip is P' = 2(w + 3 + w + 19)

= 2(w + 22)

= 2(26 + 22)

= 2(48)

= 96 feet

So, the length of the four pieces of protective strip is 96 feet.

5 0
3 years ago
Ordering Rational Numbers
Radda [10]

Answer:

0.07 < 7/50 < 0.5

Step-by-step explanation:

7/50=0.14

=>0.07<0.14<0.5

5 0
3 years ago
Can u show me a graph for the solution of |X| + 1 &lt; 3
Mariana [72]
I think you can the is an app that can help with graphing its called desmos
7 0
3 years ago
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