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3 years ago

What do algebraic expressions and numeric expressions have in common

Mathematics

1 answer:

siniylev [52]3 years ago

5 0

Answer:

A numerical expression is an expression made up only of numbers and operations but an expression written with a variable in it, is called a variable expression. Both a numerical expression and a variable expression can include powers.

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I hope this helps!

-GXLDIE <3

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If 4/5 of a population of a certain town is considered to be middle class and the population of the town is 2000 how many people

const2013 [10]

First, you would need to create an equation for this problem.
$\frac{4}{5}$ = $\frac{x}{2,000}$

Next, you would cross multiply.
5x = 8,000

Now, all you would have to do is isolate the x. To do this, you would divide both sides by 5.
x = 1,600

1,600 people are considered middle class.

I hope this helps!

8 0

3 years ago

Sloan [31]

Answer:

Rectangle area:

A = lw

Given:

l = 12 ft, A = 300 ft²

Find w:

12w = 300
w = 300/12
w = 25 ft

Perimeter is the sum of side lengths:

P = 2 1/4 + 5 2/5 + 5 17/20 =

2 + 5 + 5 + 1/4 + 2/5 + 17/20 =

12 + 5/20 + 8/20 + 17/20 =

12 + 30/20 =

12 + 1.5 =

13.5 ft

Cost of a shirt = $19.99
Number of shirts = 6

Total cost:

$19.99*6 = $119.94

8 0

3 years ago

What is the value of x in the model below? Enter your answer in the box.

sp2606 [1]

It looks like the scale is balanced so that means you can set one side equal to the other which leaves you with the equation x+(-10)=-16

To get x by itself add x to each side to get x=-6

X=-6 is your answer

3 0

3 years ago

Read 2 more answers

The sum of two consecutive number is 15. the number are and solve

Fiesta28 [93]

By Question it's given that the sum of two numbers is 15 . And we need to find out the numbers. So ,

Let us take :-

First number = x
Second number = x + 1

According to the Question :-

$\sf\implies x + x +1=15\\\\\sf\implies 2x = 15-1\\\\\sf\implies 2x =14 \\\\\sf\implies x =14/2 \\\\\sf\implies\red{ x = 7 }$

Therefore :-

First number = 7
Second number = 8

Hence the two numbers are 7 and 8. 

7 0

2 years ago

Serena and Sienna both work for a company that pays 12 dollars per hour for the first 40 hours of work in a week. If an employee

Free_Kalibri [48]

Answer:

87 total hours.

Step-by-step explanation:

The equation 456/12 Gives you how many hours Sienna worked. (38)

642-480 will give you how much money Serena made off of Just OT (162)

162/18 = 9 (9 is how many overtime hours Serena worked.)

Serena worked her normal 40 hours, then worked over time, so you have to add 40 to the equation.

9+40+38 = 87

Serena and Sienna worked 87 total hours.

7 0

3 years ago