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gtnhenbr [62]
3 years ago
15

PLEASE HELP ME WITH QUESTION #7 !!!! PLEASE!!!!! 20 POINTS!!!

Mathematics
1 answer:
pashok25 [27]3 years ago
5 0

let x = total charge

Jane = X=5 + 0.10m

Joe = x=4+0.20m

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I estimated that the repairs to my car would cost $80. In fact, they cost $120. What was the percentage error?
Sergio039 [100]

Answer:

69%

Step-by-step explanation:

Im just doing this to get my points up. dont get mad

5 0
3 years ago
3) The area of a square is 20.275 cm². Calculate the side length of the square correct to 4 sf.
timurjin [86]

Answer:

4.502

Step-by-step explanation:

Area of a square is given by

A=L*L = Length squared

20.275=L squared

Applying the square root to both sides of the equation gives L= 4.50222...

L = 4.502 correct to 4 significant figures

3 0
3 years ago
Chris works at a bakery. He bakes 14 loaves of banana bread. He sells 8 loaves to customers. Then he cuts the
Anvisha [2.4K]

Answer:

42 slices

Step-by-step explanation:

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8 0
3 years ago
The hypotenuse of a right triangle measures 18 cm and one of its legs measures 9 cm.
STALIN [3.7K]

Answer:

about 15.6cm.

Step-by-step explanation:

I got my answer of 15.6cm because I did the Pythagorean theorem.

a^2+b^2=c^2

The values of "a" and "b" are the legs of the triangle, and the value of "c" is the hypotenuse. So, the equation with the values given is 9^2+b^2=18^2.

Simplified is 81+b^2=324. Next, you have to subtracted 81 on each side, so you have "b" by itself. b^2=243. Now, I know that b^2= 243. Next, find the square root of 243. The square root of 243 is 15.58845727. This value rounded to the nearest tenth is about 15.6.

In conclusion, the measure of the other leg is about 15.6cm.

7 0
3 years ago
What is the value of x in simplest radical form?
viktelen [127]

Answer:

x=37

Step-by-step explanation:

Since this is a right triangle, we can use Pythagorean theorem

a^2 +b^2 =c^2

12^2 +35^2 = x^2

144+1225= x^2

1369 = x^2

Take the square root

sqrt(1369) = sqrt(x^2)

37 = x

5 0
3 years ago
Read 2 more answers
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