1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
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.

You might be interested in
100 POINTS FOR 4 QUESTIONS ITS EASY GUYS FOUR PICTURES ATTATCHED
Marina86 [1]

Answer:

x≥-5

x≥4

r≥21

-15 greater than or equal to x

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Where should you put your money if you want to invest it and make more money from it?
jekas [21]

Whats the answers.............

7 0
2 years ago
Select the correct answer. Which equation represents this line in point-slope form? A. `(y + 4) = (4)/(3) (x + 3)` B. `(y −4) =
Readme [11.4K]

Answer:

The correct option is `(y −4) = -(4)/(3) (x +3) ..

Step-by-step explanation:

Look at the attached picture:

The points we have given are (-3, 4) and (3, -4)

Find the slope by applying the formula:

m = y2-y1/x2-x1

Here x1= -3

x2= 3

y1 = 4

y2 = -4

Now put the values in the formula:

m = -4 -4 /3 -(-3)

m = -8/3+3

m = -8/6

Now cancel the term by table of 2

m = -4/3

When two points are given, the equation of the line is

(y - y1) = m (x - x1)

y - 4 = -4/3 (x - (-3))

y-4 =  -4/3 (x+3)

Thus the correct option is `(y −4) = -(4)/(3) (x +3) ....

4 0
3 years ago
PLS HELP ME ILL GIVE BRAINLIEST
kap26 [50]

Answer:

25

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
See question in attached photo.<br>Answer question 4b and 5c​
sdas [7]

9514 1404 393

Answer:

  4b: 8.6 m/s²; 1.3×10^5 N; 2.1×10^4 N decrease

  5c: -1.6×10^12 J; -1.6×10^12 J

Step-by-step explanation:

<h3>4b</h3>

i) The acceleration due to gravity is inversely proportional to the square of the distance between the objects. The distance to the shuttle is ...

  1 + (5×10^5)/(6.4×10^5) = 69/64 . . . times the radius of the earth

Then the acceleration due to gravity at the height of the space shuttle is about ...

  (10 m/s²)(64/69)² ≈ 8.6 m/s²

__

ii) The weight of the space shuttle at that height is about ...

  F = ma = (15000 kg)(8.6 m/s²) ≈ 1.3×10^5 N

__

iii) The loss of weight will be ...

  ΔF = m(a1 -a0) = (15000 kg)(10 m/s² -8.6 m/s²)

  = 1.5×10^4×1.4 N = 2.1×10^4 N

____

<h3>5c</h3>

i) The gravitational potential energy is given by ...

  U = -GMm/r

where M and m are the mass of the earth and the rocket, respectively.

  U = -(6.67×10^-11)(6.0×10^24)(2.5×10^4)/(6.4×10^6) ≈ -1.6×10^12 J

__

ii) At a height of 3×10^4 m, the denominator in the above expression changes from 6.4×10^6 to 6.43×10^6. This changes the gravitational potential energy by a factor of 6.4/6.43 to -1.6×10^12 J

(Note: we're carrying only 2 significant figures in the result in accordance with the rules for precision in such calculations. The change is noticeable at the level of the 4th significant figure, less than 1/2%.)

4 0
2 years ago
Other questions:
  • ??? Someone please help
    6·2 answers
  • If k=, then what is –K?
    10·2 answers
  • 1.2x = 6 what is the solution ​
    15·1 answer
  • A survey was conducted with high school students in each grade to see how many prefer math or science. Some of the data are show
    14·2 answers
  • In an actual, 100 people were polled to determine the probability of a person wearing either glasses or contact lenses. Of those
    5·1 answer
  • The table shows locations on a map.
    6·2 answers
  • Which expression shows another way to find the volume of this prism?
    6·2 answers
  • 7 - 1/4 X 12 +(3/4+1/2) + 8 ÷ 2+2 X 3 =
    8·1 answer
  • What numbers of vegetables v can he buy and stay under his spending limit?
    12·1 answer
  • Which of the following measurements could be the side lengths of a right triangle?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!