Find the value of 5x-10 given that - 2x +7=3.

Mathematics

1 answer:

inysia [295]3 years ago

8 0

Answer:

Step-by-step explanation:

-2x+7=3

First you want to get the variable alone. To do that you need to subtract 7 from both sides

-2x+7(-7)=3(-7)

-2x=-4

Next you need to divide -2 on both sides to isolate the variable.

-2x/-2=-4/-2

-2/-2 is 0 and -4/-2 is <em>positive </em>2 because a negative divided by a negative is positive.

x=2

Since x=2 you can plug in 2 into 5x-10 to get the final answer.

5(2)-10

10-10

You might be interested in

Measure the screwdriver's length to the nearest tenth of a centimeter. Express the answer as a decimal.

Alja [10]

Answer:

17.1 cm

Step-by-step explanation:

A screw driver is a mechanical tool or device which is mainly used for screwing the screws and unscrewing them. It is also used for removing the nuts and bolts and also serves a variety of uses.

It is typically made of steel and has a handle and a shaft which ends as a tip.

In the context, the length of the screw driver from the given figure expressed to the nearest tenth of a centimeter is 17.1 cm.

It is also equivalent to $6\frac{3}{4}$ inch.

8 0

3 years ago

Which graph represents the solution set of the system of inequalities?

lidiya [134]

$y < \dfrac{2}{3}x\\\\y=\dfrac{2}{3}x\\\\for\ x=0\to y=\dfrac{2}{3}(0)=0\to(0,\ 0)\\\\for\ x=3\to y=\dfrac{2}{3}(3)=2\to(3,\ 2)\\\\y\geq-x+2\\\\y=-x+2\\\\for\ x=0\to y=-0+2=2\to(0,\ 2)\\\\for\ x=2\to y=-2+2=0\to(2,\ 0)$