Operations

Mathematics

1 answer:

Charra [1.4K]3 years ago

5 0

Answer:

More Than

Step-by-step explanation:

According to the given statement:

This year the club earned $20 more than twice what it earned last year. Let x represent the amount raised last year.

The two words in this problem which tell us about the operation are "More Than"

This year club earned $20 more than than twice it earned last year. This means, to find the earnings of this year, double the earnings of previous year and add 20 to them.

Since, x represents the earnings of last year, we can represent the earnings of this year as:

Twice of x + 20

2x + 20

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1) Expand and simplify the following: a)3(x squared plus 3x cubed - 2)

Musya8 [376]

Answer:

3x³ + x² - 2

Step-by-step explanation:

a) 3(x squared plus 3x cubed - 2)

x squared = x²

3x cubed = 3x³

3(x squared plus 3x cubed - 2)

= 3(x² + 3x³ - 2)

= 3x² + 9x³ - 6

Rearrange according to power

= 9x³ + 3x² - 6

When the expression is divided by 3, it is equivalent to

3x³ + x² - 2

5 0

3 years ago

How many hours would someone who earns $7.50 per hour have to work to earn $116.25?

Levart [38]

Lets look at the information we have:-

$7.50 per hour
How many hours to earn $116.25?

To answer this we will divide. Lets do it:-

116.25 ÷ 7.50 = 15.5
15 and a half hours.

CHECK OUR WORK:-

15.5 × 7.50 = 116.25
We were RIGHT!!

So, to earn $116.25 when getting paid $7.50 per hour you would need to work for 15 and a half hours.

Hope I helped ya!!!

6 0

3 years ago

Read 2 more answers

Factor completely and show work

sukhopar [10]

The answers to the questions