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trapecia [35]
3 years ago
9

a telephone technician charges $30 per hour plus a $45 service charge your father's firm hires him to hook up his company's phon

e system find the total charges if it takes the telephone technician 6.5 hours to complete the task
Mathematics
1 answer:
hodyreva [135]3 years ago
6 0

y=mx+b

y=30h + 45

h= 6.5h

y=30(6.5)+45

y=$240

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Factor completely...................
defon

Answer:

Final answer is A. 9(3x+1)(3x-2).

Step-by-step explanation:

Given expression is 81x^2-27x-18.

81x^2-27x-18

=9(9x^2-3x-2)

We can factor that by splitting middle term into two parts then do grouping as shown below:

=9(9x^2-6x+3x-2)

=9(3x(3x-2)+1(3x-2))

=9(3x+1)(3x-2)

Which correctly matches with choice A. 9(3x+1)(3x-2).

Hence final answer is A. 9(3x+1)(3x-2).

3 0
3 years ago
A parent made x cupcakes for each of the 109 students in the fourth grade. Which expression could be used to determine the total
Shkiper50 [21]

Answer:

C. 109x

Step-by-step explanation:

We know that there are 109 students in the fourth grade, who each have x cupcakes. In order to find the total amount of cupcakes, we could add all of the cupcakes together to get:

x + x + x + x + .... x

109 times because there are 109 students.

This can be simplified to become 109x.  

6 0
2 years ago
Please HELP ASAP !!!!
Andre45 [30]

Median = 75 because that is where the middle line of the box is.

First quartile = 70 because that is what the left edge of the box represents.

Third quartile = 85 because the right edge of the box indicates that.

Maximum = 100 because at the far right is the maximum data point of your data set.

The middle 50% of that data is between 70 and 85 because those are the values the box covers. It goes from the first quartile, 70, and stretches all the way to the third quartile 85.

5 0
3 years ago
Does the table represent a proportional or a nonproportional linear relationship?​
fredd [130]

Answer:

nonproportional

Step-by-step explanation:

proportional would mean that the y intercept is 0 but it's 3

3 0
2 years ago
Jeff and kevin went to the fair with $20 each. They paid $6 for two rides, $2 for cotton candy and bought two drinks at $3 each.
d1i1m1o1n [39]

Answer:

Jeff and Kevin have $20 left

Step-by-step explanation:

do (20+20)-(6+6)-2-(3+3)=20

4 0
2 years ago
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