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Anettt [7]
3 years ago
15

15(2-x)=13(3-x) pls help

Mathematics
2 answers:
gizmo_the_mogwai [7]3 years ago
7 0

Answer:

x =  - 4.5 \\

Step-by-step explanation:

15(2 - x) = 13(3 - x) \\ 30 - 15x = 39 - 13x \\  - 15x + 13x =  - 30 + 39 \\  - 2x = 9 \\  \frac{ - 2x}{ - 2}  =  \frac{9}{ - 2}  \\ x =  - 4.5

hope this helps

brainliest appreciated

good luck! have a nice day!

schepotkina [342]3 years ago
6 0

Answer:

-4.5

Step-by-step explanation:

15(2-x)=13(3-x)

Expand parentheses:

30-15x=39-13x

Add 15x to both sides:

30=2x+39

Subtract 39 from both sides:

2x=-9

Divide both sides by 2:

x=-4.5

Hope this helps!

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A group of friends share 32 cookies.
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3 years ago
I need help understanding this and help with the problems...
Pavel [41]

1. 15+37=?

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  • add tens and digits 50+2=52.

2. 22+49=?

  • 22=20+2 (given on the diagram)
  • 49=40+9 (given on the diagram)
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  • add tens and digits 70+1=71.

3. 38+26=?

  • 38=30+8 (given on the diagram)
  • 26=20+6 (given on the diagram)
  • add digits to digits 8+6=14=10+4
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Answer: 1) 52; 2) 71; 3) 64.

7 0
3 years ago
Read 2 more answers
The length of a rectangle is 22 feet longer than the width. the perimeter is 1616 feet. find the dimensions of the rectangle.
NemiM [27]
So we can setup variable equations for this:
so we're given that the length is 22feet longer than the width!
so as an expression length is equal to 22+w
and width as an expression is just w
so the formula for the perimeter for a rectangle is 2l+2w=perimeter
so fill it in now!
1616=2(22+w)+2w
1616=44+2w+2w
1616=44+4w
1572=4w
divide by four..
w=393
and length is simply 22 more than that as stated in the question!
so length is 415
dimensions are: 415x393
7 0
3 years ago
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