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3 years ago

Use properties of rational numbers to simplify the expression.

1 answer:

5 0

Simple, your answer is B. You add what's inside the () and then you add it to -21 because both numbers are negative meaning they add up.

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PLEASE HELP!!! I REALLY NEED HELP!!

Eddi Din [679]

9514 1404 393

Answer:

$7.10

Step-by-step explanation:

Nevach's rate can be found by using x=1 in the equation for his pay.

y = 28.5 × 1 = 28.50 . . . . dollars

Carson's hourly rate can be found by dividing dollars by hours:

$214/(10 h) = $21.40/h

Nevach's rate exceeds this by ...

$28.40 -21.40 = $7.10

Nevach earns $7.10 more per hour.

6 0

3 years ago

I CAN DO IT!

omeli [17]

Answer:

Marione= 500/53= 9.43m/s

Hannah= 500/60= 8.33m/s

William= 500/55= 9.09m/s

Princess= 500/58= 8.62m/s

Axel= 500/63= 7.94m/s

4 0

3 years ago

Find (f(x+h)-f(x))/(h) for the given function. f (x) = 5x2 - 6x + 4

Tema [17]

Answer: 5h + 10x -6

Step-by-step explanation:

if we plug f(x) into the equation we get:

$\frac{[5(x+h)^2 - 6(x+h) + 4] - [5x^2 - 6x + 4]}{h}$

now from here we can simplify:

$\frac{5x^2 + 5h^2 + 10xh - 6x - 6h + 4 - 5x^2 + 6x - 4}{h}$

now add liked terms

$\frac{5h^2 + 10xh - 6h}{h}$

cancel what we can:

5h + 10x - 6

6 0

3 years ago

Sallie wants to purchase a skateboard. She has $115 to spend. She finds one that regularly sells for $137.99 and is on sale for

Elan Coil [88]

Sallie has $115 which is not enough to buy the skateboard as it costs $119.22

Step-by-step explanation:

Given,

Regular price of skateboard = $137.99

Discount = 20% = $\frac{20}{100}=0.2$

The discounted sale price of the skateboard without tax can be found by multiplying the regular price by 0.2

Discount = 137.99*0.2 = $27.60

Discounted sale price = Regular price - discount

$Discounted\ sales\ price = 137.99-27.60\\Discounted\ sales\ price = \$110.39\\$

Sales tax = 8% = $\frac{8}{100}=0.08$

The total amount of sales tax can be found by multiplying the discounted sale price by 0.08

Total cost with sales tax = 110.39*0.08 = $8.83

Total cost of skateboard = Discounted sale price + sales tax

Total cost of skateboard = $110.39+8.83 =\$119.22$

Sallie has $115 which is not enough to buy the skateboard as it costs $119.22

Keywords: percentage, addition

Learn more about addition at:

#LearnwithBrainly

7 0

3 years ago

Ellen is playing a video game in which she captures butterflies.there are 3 butterflies on screen, but the number of butterflies

Anestetic [448]

Answer.... 32

when a number doubles, it is simply a higher power of 2

so there are 3 butterflies in the beginning, which can also be written as 3 * (2^0) where the 0 is the initial power, since anything to the 0 power is 1 (except for 0)

so the expression would be 3 * (2^n)

after 4 minutes, it would be 3 * (2^4) or 3 * 16 or 48

to find out how many are remaining, we know that she captured 7 of them, so it would be 3 * (2^4) - 7

for question 2, Jeff texts 4 classmates, and then they each text 4 classmates, so that would be 4^2 or 16, but since 2 people do it, it would be

i saw this on yahoo hope it helps

7 0

3 years ago