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3 years ago

How do you solve this equation in algebra-7x=-7x

Mathematics

1 answer:

MA_775_DIABLO [31]3 years ago

7 0

Answer:

if both sides are equal x's, then they are all real numbers. so 16x=16x, means it's all real numbers. 16x=16 is equal to x=1, dont mix this up.

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A car is driving away from a crosswalk. The formula d = t2 + 2t expresses the car's distance from the crosswalk in feet, d, in t

alukav5142 [94]

Answer:

8 feet per second.

Step-by-step explanation:

We have been given that a car is driving away from a crosswalk. The formula $d=t^2+2t$ expresses the car's distance from the crosswalk in feet, d, in terms of the number of seconds, t, since the car started moving.

We will use average change formula to solve our given problem.

$\text{Average change}=\frac{f(b)-f(a)}{b-a}$

$\text{Average change}=\frac{d(5)-d(1)}{5-1}$

$\text{Average change}=\frac{(5)^2+2(5)-((1)^2+2(1))}{4}$

$\text{Average change}=\frac{25+10-(1+2)}{4}$

$\text{Average change}=\frac{35-3}{4}\\\\\text{Average change}=\frac{32}{4}\\\\\text{Average change}=8$

Therefore, the the car's average speed over the given interval of time would be 8 feet per second.

8 0

3 years ago

If Nathan begins his journey after 9 a.m. he is allowed a discount

Anuta_ua [19.1K]

Answer:

a) The discounted prince is 70% of the full price.

b) 32.5 €

Step-by-step explanation:

a) If the full price is 100%, then you subtract 30% which is the discount and you get 70 %.

b) 22.75 is 70% of 32.5

7 0

3 years ago

Use the diagram to answer the following questions.125°Lx2X+10NmZNPMdegreesmZLPMdegrees

lutik1710 [3]

For the angle MPN we know that is oposite to the angle QPL so the will be equal so:

$\angle MPN=125º$

Now with the value of MPN we can made an equation for x so:

$125=2x+10$

and we solve for x

$\begin{gathered} 125-10=2x \\ \frac{115}{2}=x \\ 57.5=x \end{gathered}$

and the angle LPM will be the complementari angle of 125 so:

$\begin{gathered} \angle LPM=180-125 \\ \angle LPM=55º \end{gathered}$

4 0

1 year ago

Can u answer number 20 only pls with explaining

densk [106]

$\text{Hello there!}\\\\\text{To find your average, you would add all of the numbers together, then}\\\text{divide by how many there are}\\\\\text{The times are: 1.23, 1.04, and 1.18}\\\\\text{Add them together and divide by 3}\\\\1.23+1.04+1.18=3.45\\\\3.45\div3=1.15\\\\\boxed{\text{Average time: 1.15 minutes}}$

6 0

2 years ago

Q6 Q18.) Which of the choices shows the key steps that can be used to verify the identity?

nikklg [1K]

Hi again!

The correct answer is option A

See picture below for the details.

Let me know if you have any questions about the answer!

7 0

2 years ago