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Serga [27]
4 years ago
11

2x+16=7+2x how do you solve if the variable is the same on both sides of the equation

Mathematics
2 answers:
jeka944 years ago
7 0
First subtract the 7 from both sides and that would equal 2x+9=2x then subtract 2x and the answer is 9
lisabon 2012 [21]4 years ago
6 0
There are no real solutions to this equation and that would be your answer.
If you subtract 7 from both sides you get 2x+9=2x. No value of x would make that equation true, so you have to write on your paper that there are no real solutions as your answer.
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Y is directly proportional to x when y=30, x=6
rosijanka [135]

Answer:

a) y = 5x

b) y = 60

Step-by-step explanation:

Since, y is directly proportional to x when y=30, x=6

\therefore \:  y \:  \alpha \:  \: x \\ \therefore \:  y =  kx ...(1) \\ plug \: y = 30 \: and \: x = 6  \: in \: eq \: (1)\\ 30 = k \times 6 \\ k =  \frac{30}{6}  \\ k = 5 \\ plug \: k = 5 \: in \: (1) \\ y = 5x....(2) \: (required \: equation) \\ plug \: x = 12 \: in \: eq \: (2) \\ y = 5 \times 12 \\  \huge \red{ \boxed{y = 60}}

4 0
3 years ago
Evaluate the following expressions if ×=2,y=3 and Z=4. a.4×+×-3over ×+10 b.2y-5yover y+5. c.yz-×. d.9+y+zover y+2​
sammy [17]

Answer:

A= 7 11/12 or 7.916 or  95.12

B= 4 1/8 or 4.125 or 33/8

C=  12 4/5 or 12.8 or 64/5

6 0
3 years ago
If f is a function, then f(3x)=3f(x)
Delvig [45]
This is false.
The f(3x) means you are multiplying the input 'x' by 3 before plugging into the equation.
3f(x) means you are going to multiply your answer (output) by 3 after you've plugged the input value in and gotten the output.
7 0
4 years ago
What percent of 143 is 95.1?
Aloiza [94]

Answer:

66.5%

Step-by-step explanation:

95.1/143*100=66.5%

4 0
3 years ago
Read 2 more answers
Monique needs to buy a baseball for $20, a soccer ball for $15, and a set of tennis balls for $12. Monique has a coupon that giv
sveta [45]
<span>(1−x)20+(1−y)12+15

(1−z)(20+15+12)</span>
8 0
3 years ago
Read 2 more answers
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