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lara31 [8.8K]
3 years ago
14

Simplify the expression below. Show your Work.

Mathematics
1 answer:
lord [1]3 years ago
8 0

Answer:

7y + 24

Step-by-step explanation:

Think of the negative sign to the left of the parentheses as being -1. Then apply the distributive property. The effect of a negative sign to the left of parentheses or a 1 to the left of parentheses is that each term inside the parentheses changes sign.

-(-7y - 24) = -1(-7y - 24) = (-1)(-7y) - (-1)(24) = 7y - (-24) = 7y + 24

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Plzz help me helppppp I'm almost out of time
Evgen [1.6K]

Answer:

$6.50 per bag of popcorn

Step-by-step explanation:

let a bag of popcorn be represented by p and a candy bar be b

28p + 40b= $282

17p + 20b= $160.50

this is an example of stimatanelous equations

so you have to double the second equation to give 34p + 40b =$321

subtract the equations to give one

6p =$39

divide $39 by 6 to give the value of one bag of popcorn = $6.50

3 0
2 years ago
What is the simplified form of 3V7-5V7? A.-2V7 B.2V7 C.-V14 D.15V7
lesantik [10]

Answer:

A -2V7

Step-by-step explanation:

you just have to subtract the coefficients

3-5=-2

-2V7

3 0
2 years ago
Read 2 more answers
SC.6.E.6.14.
tester [92]
It has to be A I’m sorry if I’m wrong
4 0
2 years ago
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A sound wave travels at 330m/s and has a wavelength of 2 m. calculate its frequency and period.
RoseWind [281]

Answer:

frequency= 165Hz

period= \frac{1}{165}

Step-by-step explanation:

1. To calculate the frequency using the formula:

f = v/λ

where,

f=frequency (what the question asked)

v=speed of wave (given in the question=330m/s)

λ=wavelength (given in the question=2m)

SO,

f=\frac{330}{2}

= 165Hz

2. To calculate the period use the formula:

since f=\frac{1}{T}

therefore, T=\frac{1}{f}

where,

f= frequency (what we solved above=165Hz)

T= period (what the question asked)

SO,

T=\frac{1}{165}

4 0
2 years ago
Dean is the manager of a restaurant and is evaluating whether or not the restaurant has enough parking spaces. At ten different
Colt1911 [192]

Answer:

d

Step-by-step explanation:

6 0
2 years ago
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