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Lena [83]
3 years ago
9

Julie’s friend decided to buy a jacket as well. The jacket that she bought, though, was not on sale. Julie’s friend’s jacket is

priced at $45. If sales tax is 7%, how much will Julie’s friend’s jacket cost?
Mathematics
1 answer:
mr Goodwill [35]3 years ago
8 0

Answer:

$48.15

Step-by-step explanation:

7% of 45 is 3.15. so 45 + 3.15= 48.15

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Use inductive reasoning to predict the next line in the pattern. Then perform the arithmetic to determine whether your conjectur
iren2701 [21]

Answer:

8(5) + 8(25) + 8(125) + 8(625) +8(3125)= 10(3125 - 1)=31240

Hence proved Conjecture is correct

L.H.S=R.H.S

Step-by-step explanation:

Consider the pattern:

8(5)=10(5-1)=40

8(5) + 8(25) = 10(25 - 1) =240

8(5) + 8(25) + 8(125) = 10(125 - 1) =1240

8(5) + 8(25) + 8(125) + 8(625) = 10(625 - 1)=6240

According to inductive reasoning next term of pattern will become:

8(5) + 8(25) + 8(125) + 8(625) +8(3125)= 10(3125 - 1)=31240

Checking whether conjecture is correct or not:

Consider L.H.S:

8(5) + 8(25) + 8(125) + 8(625) +8(3125)

40+200+1000+5000+25000

31240

R.H.S:

31240

Hence proved Conjecture is correct

L.H.S=R.H.S

7 0
3 years ago
1.3b+7.8−3.2b write your anwser here
vovangra [49]

Answer:

-19b + 78

Step-by-step explanation:

We multiply by 10 to make it easier

13b+78-32b

-19b + 78

3 0
2 years ago
If the square of twice a number is 81, what is the number? I tried doing 2x^2=81 but that did not come out to the answer 4.5,-4.
Vlada [557]
If the number is n then

square of 2 times a number
square of 2n
(2n)²
that was your mistake, because (2n)²=4n², not 2n²

the result is 81
(2n)²=81
square root both sides
remember positive and negative roots
2n=+/-9
divide by 2
n=+/-4.5

n=4.5 or -4.5
4 0
3 years ago
Solve for x
choli [55]
X=4 is your answer because 27 minus 7 is 20 and 20 divided by 5 is 4 have a good day
3 0
3 years ago
Read 2 more answers
Please help me answer!!!!
ira [324]
I don't know what the answer is I'm sorry
5 0
3 years ago
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