All categories

4 years ago

PLEASE HELP!!! WILL GIVE BRAINLIEST!!

Mathematics

1 answer:

makkiz [27]4 years ago

6 0

Answer:

Step-by-step explanation:

You might be interested in

If p(x) = x2 – 1 and 9(x) = 5(x-1), which expression is equivalent to (p - 9)(x)?

Westkost [7]

For this case we have the following functions:

$p (x) = x ^ 2-1\\9 (x) = 5 (x-1)$

We must find $(p-9) (x).$ By definition of composition of functions we have:

$(p-9) (x) = p (x) -9 (x)$

So:

$(p-9) (x) = x ^ 2-1- [5 (x-1)] = (x ^ 2-1) -5 (x-1)$

Thus, the correct option is option C.

Answer:

$(x ^ 2-1) -5 (x-1)$

Option C

4 0

3 years ago

A sample has a mean of M = 90 and a standard devia-tion of s 20.=a. Find the z-score for each of the following X values.X = 95X

sladkih [1.3K]

Answer:

$\begin{gathered} X=95,z=0.25 \\ X=80,z=-0.5 \\ X=98,z=0.4 \\ X=88,z=-0.1 \\ X=105,z=0.75 \\ X=76,z=-0.7 \end{gathered}$

Explanation:

Given a sample with the following:

• Mean,M = 90

• Standard deviation, s = 20

To find the z-score for each of the given X values, we use the formula below:

$\begin{equation*} z-score=\frac{X-\mu}{\sigma}\text{ where }\begin{cases}{X=Raw\;Score} \\ {\mu=mean} \\ {\sigma=Standard\;Deviation}\end{cases} \end{equation*}$

The z-scores are calculated below:

$\begin{gathered} \text{When X=95, }z=\frac{95-90}{20}=\frac{5}{20}=0.25 \\ \text{When X=80, }z=\frac{80-90}{20}=\frac{-10}{20}=-0.5 \\ \text{When X=98, }z=\frac{98-90}{20}=\frac{8}{20}=0.4 \end{gathered}$ $\begin{gathered} \text{When X=88,}z=\frac{88-90}{20}=\frac{-2}{20}=-0.1 \\ \text{When X=105, }z=\frac{105-90}{20}=\frac{15}{20}=0.75 \\ \text{When X=76, }z=\frac{76-90}{20}=\frac{-14}{20}=-0.7 \end{gathered}$

5 0

1 year ago

Surface Area?.. Thank You

skad [1K]

I think 1,784 is the surface area. But not sure

6 0

3 years ago

Did the answer is right?

ololo11 [35]

Answer:

im english

Step-by-step explanation:

5 0

3 years ago

Emika has a monthly budget for her cell phone bill.

meriva

Emika's monthly budget is $60.

A percentage can be described as the fraction of a number multiplied by 100. The sign used to represent percentages is %.

Let Emika's cell phone bill budget be represented with x.

In order to determine his monthly budget, divide $60 by 120%

x = $60 / 120%

x = $60 / 1.20

x = $50

To learn more about percentages, please check: brainly.com/question/25764815

3 0

3 years ago