3 years ago

I need to know this answer so I can get the answer

2 answers:

4 0

CD=50 DVD=40
5C+7D=530

C=D+10
C-D=10
Solve the system
5C+7D=530
5C-5D=50 (multiply by 5)
Subtract
12D=480
D=40
Substitute in any of the equations
C-D=10
C-40=10
C=50

gladu [14]3 years ago

3 0

58 cds and and 34 dvds

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Solnce55 [7]

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6 0

3 years ago

Fill in the blank with the correct math term, and give an example of each.

Lisa [10]

Answer:

A.A(n) expression is a mathematical relationship that uses one or more variables, numbers or operation symbols.

B.A(n) variable is a symbol that can be replaced by a number in a mathematical expression or equation.

C.A(n) equation is a mathematical sentence with an equal sign.

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2 years ago

Line AB goes through the points A (0, –4) and B (6, 2). Which equation represents line AB?

Contact [7]

Answer:

The slope is 1/3.

Step-by-step explanation:

To solve this problem you had to use the slope of an equation represents the line.

Slope formula:

$\displaystyle \frac{Y_2-Y_1}{X_2-X_1}$

$\displaystyle \frac{2-4}{6-0}=\frac{-2}{6}=\frac{-2\div2}{6\div2}=\frac{-1}{3}=-\frac{1}{3}$

Therefore, the slope is 1/3, which is our answer.

Hope this helps!

7 0

4 years ago

The 2017 population of California was 39536653 and of Arizona was 7016270. Compute and compare the rate of pedestrian fatalities

jasenka [17]

Answer:

The pedestrian fatality rate for California per 100,000 residents would be;

= (858/39,536,653) * 100,000

= 2.17 people per 100,000

In Arizona that figure is;

= (216/7,016,270) * 100,000

= 3.08 people per 100,000

<em>This shows that even though California has a higher number of pedestrian fatalities in absolute terms, when this figure is made relative to population, Arizona has more pedestrian fatalities. </em>

6 0

3 years ago

PLEASE HELP I WILL MAKE BRAINEST UGH

Alenkasestr [34]

It's the first one---------------------

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3 years ago