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babunello [35]
3 years ago
11

Mary Jo takes her son to get a haircut at the barbershop. The total cost of the haircut is $12.60, including a 20% tip. How much

was the haircut before the tip?
Mathematics
1 answer:
Paladinen [302]3 years ago
8 0

Answer:

10.5

Step-by-step explanation:

because that's it trust me.

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Which of the following is a step in evaluating: ∫ cos2 5x dx
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From the following choices, the correct step in evaluating: ∫ cos2 5x dx is 1 - cos 10x / 2dx.
4 0
3 years ago
Whoevr answers this question correctly gets brainly<br><br>and show your work please
blsea [12.9K]

Answer:

1/4

Step-by-step explanation:

The chance of it landing heads up once would be 1/2

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The chance of it landing heads up three times would be 1/8

The chance of it landing heads up four times would be 1/16

See the pattern?

Pattern:  <em><u>Divide the denominator by 2.</u></em>

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3 0
3 years ago
Find <br> Round to the nearest tenth 27 201 28 a= ?
iren2701 [21]

Step-by-step explanation:

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5 0
3 years ago
At the U.S open tennis championship a statistician keeps track of every serve that a player hits during the tournament. The mean
GarryVolchara [31]

Answer:

Step-by-step explanation:

Both 115 and 145 mph are above the mean.  Draw a normal curve and mark these speeds.  115 mph is 1 standard deviation above the mean; 130 would be 2 standard deviations above the mean; and 145 would be 3 s. d. above it.

We need to find the area under the standard normal curve between 115 and 145.  This is equivalent to the area under the standard normal curve between z = 1 and z = 3.

I used my TI-83 Plus calculator's DISTR function "normalcdf(" to calculate this area:  normalcdf(1, 3) = 0.1573.

The area between z = 1 and z = 3 is 0.1573.  In other words, the percentage of serves that were between 115 and 145 mph was 15.73%.

8 0
3 years ago
​ Find the output, h, when the input, x, is - 18.<br><br> ​ h=17+ x/6
Nookie1986 [14]

Answer:

h = 20

Step-by-step explanation:

h = 17 + x/6

h = 17 + (18) / 6

h = 17 + 3

h = 20

5 0
3 years ago
Read 2 more answers
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