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AveGali [126]
3 years ago
13

Kristin earns $6.50 for every hour she babysits for the Overstreet family. Part A: Last Friday, Kristin babysat for 4.5 hours. H

ow much money did she make during that job? $__________ Part B: Mrs. Overstreet has told Kristin that she will pay her $45.50 for tomorrow's babysitting job. How many hours will Kristin babysit then? __________ hours
Mathematics
1 answer:
soldier1979 [14.2K]3 years ago
8 0

Answer: Part A: she would make 35.75

Part B:  She would work for 7 hours

Step-by-step explanation:

Part A: $6.50+4.5=35.75

Part B: $45.50 dived by $6.50 would be 7. So she worked 7 hours

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What is the value of a when we rewrite 8^x as a^-x/9​
Andre45 [30]

Answer:

a = \frac{1}{134217728}

Step-by-step explanation:

Given

8^x = a^{-x/9}

Required

Find a

Take log of both sides

log(8^x) = log(a^{-x/9})

Apply law of logarithm

x\ log(8)  = (-x/9) log(a)

Divide both sides by a

log(8)  = -\frac{1}{9} log(a)

Multiply both sides by -9

-9\ log(8)  = log(a)

Apply law of logarithm

log(8^{-9})  = log(a)

Cancel out log

8^{-9}  = a

Rewrite as:

a = 8^{-9}

Apply law of indices

a = \frac{1}{8^9}

a = \frac{1}{134217728}

4 0
3 years ago
The function C(x)=17.5x−10 represents the cost (in dollars) of buying x tickets to the orchestra with a $10 coupon. a. How much
Natasha_Volkova [10]

Answer:

a. It would cost $77.50 to buy 5 tickets.

C(x)=17.5(5)-10

C(x)=87.50-10

C(x)=77.50

b. You can buy 8 tickets with $130

C(x)=17.5x-10

130=17.5x-10

Add 10 on both sides

140=17.5x

Divide 17.5 on both sides

8=x

8 0
3 years ago
Read 2 more answers
A company manufactures and sells mini-recorders. A survey of office supply stores indicated that at a price of $82 each, the dem
Nutka1998 [239]
The first one. Substitute both $82 and $42 to get the 4 and 9 hundreds.

Y = -1/8*82+57/4 = 4 hundreds
3 0
3 years ago
Sally pays 0.5% per week interest on a loan of £6o
Alina [70]

Answer:

6 £

Step-by-step explanation:

Principal loan amount x Interest rate x Time (aka Number of weeks in term) = Interest.

0.5% = 0.005

60 × 0.005 × 20 = 6

4 0
3 years ago
Help pls
vaieri [72.5K]

Answer:

Check pdf

Step-by-step explanation:

Download pdf
8 0
3 years ago
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