Which ordered pairs are a solution to y=4x?

Solve the equation 16y+ -2=-20

Ilia_Sergeevich [38]

Answer:

y=-34

Step-by-step explanation:

16y-2=20

+2 +2

16y=-18

-16 -16

y= -34

6 0

3 years ago

I need to know how to solve for X

yulyashka [42]

add all the numbers until u left with no numbers left except the number left over and then add xs and then subtract the number from 23 to isolate x. then divide x by the number left over from the right side.

-6+9-19=-16

x+2x=3x

so -16+3x= 23

+16 +16

3x=39

(3/3)x=39/3

x=13

hope it helps!

4 0

3 years ago

Nalani says the expression 2+5x cannot be factored using the GCF. Is she correct? Explain why or why not

serious [3.7K]

The correct answer would be D, because there’s no other leading common factors between the two besides one.

5 0

3 years ago

Read 2 more answers

The mean number of words per minute (WPM) typed by a speed typist is 149149 with a standard deviation of 1414 WPM. What is the p

Semmy [17]

Answer:

The probability is $P(\= X > x ) = 0.78814$

Step-by-step explanation:

From the question we are given that

The population mean is $\mu = 149$

The standard deviation is $\sigma = 14$

The random number $x = 147.81$

The sample size is $n = 88$

The probability that the sample mean would be greater than $P(\= X > x ) = P( \frac{ \= x - \mu }{\sigma_{\= x} } > \frac{ x - \mu }{\sigma_{\= x} } )$

Generally the z- score of this normal distribution is mathematically represented as

$Z = \frac{ \= x - \mu }{\sigma_{\= x} }$

Now

$\sigma_{\= x } = \frac{\sigma }{\sqrt{n} }$

substituting values

$\sigma_{\= x } = \frac{14 }{\sqrt{88} }$

$\sigma_{\= x } = 1.492$

Which implies that

$P(\= X > x ) = P( Z > \frac{ 147.81 - 149 }{ 1.492} )$

$P(\= X > x ) = P( Z > -0.80 )$

Now from the z-table the probability is found to be

$P(\= X > x ) = 0.78814$

5 0

3 years ago

Decide whether the following statement makes sense (or is clearly true) or does not make sense (or is clearly false). Explain yo

schepotkina [342]

Answer:

A. is the correct one. The statement makes sense.

Step-by-step explanation:

A. This is true because if you make your graph starting from the lowest value then the graph will use more space to fit the data and it will make it look bigger. Also, the variation will seem higher because it will feel that you are increasing it from 0, so the relative increase will be higher.

B. Reducing the range of the vertical axis will increase the relative size of variation, not make it decrease, as we explained in A.

C. Even though it is technically certain that the data shown is the same as before, the way to show data also matters. And by making changes on the presentation of your data you can obtain different results on the impression that leaves to people.

D. This is just false, because you are indeed dereasing the range of the vertical axis, not increasing it.

6 0

3 years ago