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Dominik [7]
3 years ago
7

Which expression is equivalent to 5x - 30

Mathematics
1 answer:
ozzi3 years ago
5 0
Taking out common factor, 5
5x - 30 = 5(x - 6)
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10/6=15/x solve for x
Basile [38]
I believe that x=9. I used cross multiplication. First, I multiplied 6 by 15. Second, I divided this product of 90 by 10. The quotient is 9.
8 0
3 years ago
Solve the following systems: 3x+4y=0 2x+3y=1
yanalaym [24]

Answer:

Answer is x= -4 and y= 3

Step-by-step explanation:

given \: equations \: are \\ 3x + 4y = 0 \:  \: and \: 2x + 3y = 1  \\ multiply \: by \: 2 \: in \: first \: equation \\ 6x + 8y = 0 \\ multiply \: by \: 3 \: in \: second \: equation \\ 6x + 9y = 3 \\ subtracting \: the \: above \: mentioned \: equation \:  \\  we \: get \:  - y =  - 3 \\ \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  y = 3 \\ substitute \: y = 3 \: in \: first \: equation \\ 3x + 4(3) = 0 \\ 3x =  - 12 \\ x =  - 4

<em>HAVE A NICE DAY</em><em>!</em>

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7 0
2 years ago
Three sets of a sum of a number and four are added to the sum of 7 times the same number and 13
Reika [66]
Let
x--------------> a number

we know that
<span>three sets of a sum of a number and four----------> 3(x+4)
t</span><span>he sum of 7 times the same number and 13--------> 7x+13

therefore

</span>(Three sets of a sum of a number and four) are added (to the sum of 7 times the same number and 13) ----------> [3(x+4)] + [7x+3]

[3(x+4)] + [7x+3]------> [3x+12] + [7x+3]=10x+15

the answer is 10x+15


5 0
3 years ago
Roun 29.34 to the nearest tenth pleasee
ludmilkaskok [199]

The next smaller tenth is  29.3 .
The next bigger tenth is  29.4 .

29.34  is nearer to  29.3  than to 29.4 .

So the nearest tenth is  29.3 .

3 0
3 years ago
Read 2 more answers
What is 1/4+3/8 what is the answer to that
fredd [130]

Answer:

5/8

Step-by-step explanation:

1/4 = 2/8

2/8 + 3/8 = 5/8

4 0
3 years ago
Read 2 more answers
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