Which of the following values of x is a solution to the equation negative 2 x plus 8 equals 14?

Mathematics

1 answer:

andreev551 [17]3 years ago

5 0

Answer:

x= -3

Step-by-step explanation:

-2 x 3 =6 so 6+8=14

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A health insurance payment of $34.55 was deducted from ms. Donaldson's earnings for the week. After the insurance deduction, pay

leonid [27]

I think that this quesion is missing some background, that is that Ms. Donaldson earned 907.10

So the 34.55 were deduced from this number, and the remaining amount was:

907.10-34.55=872.65

After this, further 28% were deduced, which means that 100-28=72% were left.

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3 years ago

Which equations can be used to solve for acceleration? Select four options.

sweet [91]

Equations for the acceleration: $a=\frac{v-u}{t}, v=u+at$

Step-by-step explanation:

The acceleration of a body is the rate of change in velocity of the body; it is given by

$a=\frac{v-u}{t}$

where

v is the final velocity

u is the initial velocity

t is the time taken for the velocity to change from u to v

The equation can be also written as

$v=u+at$

Therefore, these two equations can be used to find the acceleration.

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3 0

3 years ago

Help!!!!! Not the top one by the way..!

OverLord2011 [107]

Answer:

$\large\boxed{x=-3\ and\ y=-11\to(-3,\ -11)}$

Step-by-step explanation:

$\underline{+\left\{\begin{array}{ccc}-6x+y=7\\3x-y=2\end{array}\right}\qquad\text{add both sides of the equations}\\\\.\qquad-3x=9\qquad\text{divide both sides by (-3)}\\.\qquad\boxed{x=-3}\\\\\text{Put the value of x to the first equation:}\\\\-6(-3)+y=7\\18+y=7\qquad\text{subtract 18 from both sides}\\\boxed{y=-11}$