How to solve (x-10)(x + 10) in word form

1 answer:

6 0

You will distribute, you will do x times both x and postive Ten in the second set of parenthesis, and then you will do negative Ten times x and also positive Ten and then you combine like terms when you got both end products

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Doctors are interested in seeing if lifting weights to alleviate back pain is effective. Twenty five volunteers are asked to ran

goldenfox [79]

Answer:

Comparing means from dependent samples.

Step-by-step explanation:

In the scenario described above, the 25 sampled individuals were used to test the effect of weightlifting on alleviating back pain. The samples used were not changed nor altered during the study as the same subjects who were tested to measure their level of pain before lifting weight were the same group subjected to the actual weight lifting test and again had their level of pain tested. Since only one group was involved in the study ( a single group was tested on neutral and actual treatment). Hence, the study used dependent samples to compare the average level of pain.

4 0

3 years ago

Find the equation of a line in slope-intercept form that passes through the points (-2, 20) and (3, -10).

solniwko [45]

Simple...

you have: (-2,20) and (3,-10,)

Using $\frac{ y_{1}- y_{2} }{ x_{1}- x_{2} }$ to find slope--->>>

$\frac{20--10}{-2-3} = \frac{30}{-5}$

=-6

m=-6

Using y=mx+b to find the equation of the line-->>>(Use any of the coordinates)

(-2,20)

20=-6(-2)+b

20=12+b

20=12+b
-12 -12

8=b

y=-6x+8

Thus, your answer.

4 0

4 years ago

Please help me i need this to pass

djyliett [7]

x = 7 and x = –7.

Solution:

Given data:

$$f(x)=x^{2}+15$ and $f(x)=64$