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Vladimir79 [104]
2 years ago
12

5y - 7(-2y + 4) I need helpppppppppppppp

Mathematics
1 answer:
ANEK [815]2 years ago
4 0

Answer:

Simplified version is 19 y-28

Step-by-step explanation:

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the diagram below has a cake is divided at a cake sale, if all the slices are sold at a total of $2500 would be collected. how m
Anarel [89]

Answer:

I am pretty sure $750

Step-by-step explanation:

Since there are 10 slices of cake, you would have to divded the cost ($2,500) by 10 to find out the cost per slice (you would get $250). Since we are finding the cost of 3 slices, you would mulitply 250 by 3, then you get your answer

4 0
3 years ago
A and b are positive integers. Find <img src="https://tex.z-dn.net/?f=-2a%2B3b" id="TexFormula1" title="-2a+3b" alt="-2a+3b" ali
lord [1]

A could be 2 while B could be 3, so -2a+3b turns into -4+9, which equals 5.

From what I know you can't really solve a a single equation with two-variables so it's just a matter of trial and error.

Just try plugging in a small number like 2 for a just to try it and you get 8b^2=72.

Divide everything by 8 to isolate b and you get that b^2=9.

Square root everything and you'll find that b=3. This is just one possible combination, I'm sure there are many more but this is obviously the one that was intended to be found.

Now that we know that a=2 and b=3 just plug them into the equation.

-2(2)+3(3)=?

-4+9=?

5

Sorry about having to use this ^ symbol, the equation maker is not working.

7 0
3 years ago
Y = -4x + 6<br> y = -2x - 2<br><br> Solve for x and y
Oduvanchick [21]

Answer:

(4,-10)

Step-by-step explanation:

You set them equal to each other.

You get x=4

Sub in 4 for one of the equations

y=-10

7 0
2 years ago
Read 2 more answers
15. Solve by factoring: 3x? - 15x + 12 = 0
Lostsunrise [7]

The solution for that proplem is X=4,1

3 0
3 years ago
Please see the picture <br><br> Line A , B , C , or D ?<br><br><br> Help me see the picture
leonid [27]

Answer:

Line A

Step-by-step explanation:

7 0
3 years ago
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