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saw5 [17]
3 years ago
8

7/3 + x=3;x math I really need help

Mathematics
1 answer:
Ksju [112]3 years ago
6 0

Given:

The equation is:

\dfrac{7}{3}+x=3

To find:

The value of x.

Solution:

We have,

\dfrac{7}{3}+x=3

Subtract both sides by \dfrac{7}{3}.

\dfrac{7}{3}+x-\dfrac{7}{3}=3-\dfrac{7}{3}

x=\dfrac{9-7}{3}

x=\dfrac{2}{3}

Therefore, the value of x is \dfrac{2}{3} or it can be written as 0.667.

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the sum of the digits of a certain two-digits number is 7.Reversing its digits increases the number by 9.What is the number
rusak2 [61]
Unit digit=y
tens digit=x
the number: 10x+y

We suggest this system of equations:
x+y=7
(10y+x)=(10x+y)+9
we solve it by substitution method.
x=7-y
10y+(7-y)=(10(7-y)+y)+9
9y+7=70-10y+y+9
9y+10y-y=70+9-7
18y=72
y=72/18=4

x=7-y
x=7-4=3

number=10x+y=10*3+4=30+4=34

solution: the number: 34

To check:
3+4=7
43=34+9
8 0
3 years ago
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Nadya [2.5K]

Your answer should be C. 3x^3√2

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3 years ago
Ify is 6 when x is 3 and y varies directly with x, find y when x is 8.
Contact [7]
Y would be 16,

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6=3k
2=k
y=2(8)
y=16
4 0
3 years ago
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Algerbra One Question
Brilliant_brown [7]
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