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exis [7]
3 years ago
11

A music store buys instruments and then sells them for 30% more than they paid.

Mathematics
1 answer:
IgorC [24]3 years ago
5 0
Bye doing the pemdas equation the at 3x + -5 you get the answer
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A is inversely proportional to b. If a=7.2 when b=-4, what will a equal when b=6?
Tpy6a [65]

Answer:

<h2>a = - 4.8</h2>

Step-by-step explanation:

To find the value of a when b=6 we must first find the relationship between them.

The statement

a is inversely proportional to b is written as

a \:  \:  \alpha  \:  \:  \frac{k}{b}

where k is the constant of proportionality

When a = 7.2 , b = -4

So we have

7.2=  \frac{k}{ - 4}

k = 7.2 × - 4

k = - 28.8

So the formula for the variation is

a =  -  \frac{28.8}{b}

When

b = 6

That's

a =  -  \frac{28.8}{6}

We have the final answer as

<h3>a = - 4.8</h3>

Hope this helps you

7 0
4 years ago
Evaluate: (8/27)^-2/3 <br><br> add: sqroot(27) + sqroot (75)
vredina [299]
The answer to the first question
is 2 1/4.
The answer to the second question is 8 sqroot 3. Hope I was able to help

3 0
3 years ago
Ants have 6 legs. Katie and Lukas write equations showing the proportional relationship between the number of ants, a, and the n
krek1111 [17]

Answer:

A

Step-by-step explanation:

I agree with Katie because number is legs is directly proportional to the number of ants.

1 ant has 6 legs.

So, 2 ants have 6 *2 = 12

3 ants have 6*3 = 18

6 0
2 years ago
Neptune is 4.5 billion kilometers from the<br> sun. Represent this number in scientific<br> notation
Tanya [424]

Answer:

4.5 x 10 ^9

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
A loan company charged 35 percent interest on every dollar borrowed. If a person borrowed 177 dollars, how much would they end u
pav-90 [236]
We know that 35 percent interest is applied on every dollar borrowed.
thus, for 1 dollor borrowed. the interest would be 0.35 dollar.
for 177 dollars, the interest would be 0.35*177.
plus the original 177 dollar, they would end up paying 177+0.35*177=238.95.
8 0
3 years ago
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