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vfiekz [6]
3 years ago
11

Forty-three is 7 less than twice a number. What is thenumber?​

Mathematics
2 answers:
klasskru [66]3 years ago
8 0

Answer:

twenty-five

Step-by-step explanation:

43+7=50

50÷2=25

kolezko [41]3 years ago
3 0

Answer:

25

Step-by-step explanation:

2x-7=43

2x=43+7

2x=50

x=50/2

x=25

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Simplify each expression 8x+13-3x+9
igor_vitrenko [27]

Answer:

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Step-by-step explanation:

8x-3x = 5x

13+9 = 22

Remember sign stays with the number

6 0
3 years ago
Find x, if 3x − 5(y + x ) ^2 = 16 and 4x + 2(y + x )^ 2 = 30
lana66690 [7]

Answer:

x = 7

Step-by-step explanation:

Start by solving for (y+x)^2 which is a common expression for both equations. Then in the first equation:

3\,x5\,(y+x)^2=16\\3x-16=5\,(y+x)^2\\(y+x)^2=\frac{3\,x-16}{5}

and in the second equation:

4\,x+2\,(y+x)^2=30\\2\,(y+x)^2=30-4\,x\\(y+x)^2=15-2\,x

Now we make the two (y+x)^2 expressions equal so we get:

\frac{3\,x-16}{5} =15-2\,x\\3\,x-16=75-10\,x\\13\,x=75+16\\13\,x=91\\x=7

8 0
3 years ago
The width of a rectangle is shown below:
Savatey [412]
The distance between points A and C is 7 units, so to find the length we divide 35 by 7 which equals 5. Now we know that points B and D must be 5 units away from A and C, which means that B would be at (2, 3) and D would be at (2, -4). I hope this helps!
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astraxan [27]
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alisa202
6 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=4%3D%5Cfrac%7B6%7D%7Ba%7Dx%2B5" id="TexFormula1" title="4=\frac{6}{a}x+5" alt="4=\frac{6}{a}x+
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What exactly is it asking for you to do?
4 0
3 years ago
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