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Rufina [12.5K]
3 years ago
6

What the answer thanks

Mathematics
1 answer:
kati45 [8]3 years ago
4 0
I'm pretty sure that the answer is A., because if you turn the fraction into a decimal and multiply it by 24, you get 7.999992, which estimates to be 8.
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An automotive repair center charges $45 for any part of the first hour of labor, and $25 for any part of each additional hour. W
IceJOKER [234]
The total cost is given by the equation:
C(t) = 45 + 25(h-1) where h is the number of hours worked.

We can check for each option in turn:

Option A:

Inequality 5 < x ≤ 6 means the hour is between 5 hours (not inclusive) to 6 hours (inclusive)
Let's take the number of hours = 5
C(5) = 45 + (5-1)×25 = 145
Let's take the number of hours = 6
Then substitute into C(6) = 45 + (6-1)×25 = 170
We can't take 145 because the value '5' was not inclusive.


Option B:
The inequality is 6 < x ≤ 7
We take number of hours = 6
C(6) = 25(6-1) + 45 = 170
We take number of hours = 7
Then C(7) = 25(7-1) + 45 = 195

Option C:
The inequality is 5 < x ≤ 6
Take the number of hours = 5
C(5) = 25(5-1) + 45 = 145
Take the number of hours = 6
C(6) = 25(6-1) + 45 = 170
We can't take the value 145 as '5' was not inclusive in the range, but we can take 170

Option D:
6 < x ≤ 7
25(6-1) + 45 < C(t) ≤ 25(7-1) + 45
170 < C(t) ≤ 195

Correct answer: C


7 0
3 years ago
The cost of a blackberry phone at John's Electrontics is $249.99. this cost includes a twelve percent sale tax. How much is the
slamgirl [31]

Answer:

$219.99

Step-by-step explanation:

To find the price without the sale tax you find the opposite of 12%, which would be 88%.  Then you multiply .88 by 249.99 to get 219.9912, and since it is money you round to the hundreth to get 219.99.

5 0
3 years ago
What Is the surface area of a cube 3cm squared.
irakobra [83]

Answer:

27 cm

Step-by-step explanation:

3×3=9

3×3=9

3×3=9

9×3 or 9+9+9=27

8 0
3 years ago
Read 2 more answers
If ∠Q measures 18°, ∠R measures 135°, and q equals 9.5, then which length can be found using the Law of Sines?
OLEGan [10]

Answer:

r

Step-by-step explanation:

Since r is not given, the length we can be find using the Law of Sines using is length r.

The Sine formula or the Law of Sines

q/Sine Q = r/Sine R

q=9.5

r is the unknown

9.5/Sine 18° = r/ Sine 135°

7 0
3 years ago
If ac is 31 what is the value of x
sweet [91]

Answer:

Step-by-step explanation:

I need the whole question..

7 0
3 years ago
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