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4 years ago

How many nickels equal $18.45? (show your work)

Mathematics

1 answer:

Anarel [89]4 years ago

8 0

Answer:

369

Step-by-step explanation:

One nickel = 0.05

0.05x=18.45

x=369

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Enrique is 5 years younger than his sister, Josefina. Josefina is 15. How old is Enrique?

Alexeev081 [22]

Hi there!

In order to solve this problem, we would create the math equation sentence

15 - 5 = e

Then, of course, we do the math.

15 - 5 = 10

And the answer is -

E = 10

I hope this helps you!

~Alexa

8 0

3 years ago

Which of the following is the value of a when the function f(x) = 3|x| is written in the standard form of an absolute value

Gnoma [55]

$\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}$

Actually Welcome to the Concept of the Modulus functions.

Since here, the value of h and k are zero,hence

the value of the function f(x) = 3|x| is 3

====> answer is 3

4 0

3 years ago

which is the equation in the slope intercept form for the line that passes through (-1,5) and is parallel to 3x+2y=4?

frozen [14]

Answerr:7

Step-by-step explanation:

4 0

3 years ago

The number of sunflowers (s) in the garden is one more

const2013 [10]

Answer:

s = 2r + 1

Step-by-step explanation:

Number of sunflower (s) is 1 more than twice the number of roses (r)

Mathematically ;

Number of sunflower = 1 + 2 * number of roses

Sunflower = s ; roses = r

s = 2r + 1

8 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