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
nataly862011 [7]
3 years ago
9

Brainliest

Mathematics
2 answers:
Amiraneli [1.4K]3 years ago
6 0

Answer: c = 20h − 15

Step-by-step explanation:

The cost should be the total and the text says $20 per hour. Next is the $15 coupon which would take off the amount of $20 per hour. Also such, the answer is c = 20h − 15

Zina [86]3 years ago
4 0

Answer:

c=20h-15

Step-by-step explanation:

It is so because you are taking 15 dollars of the cost.

You might be interested in
A researcher drilled a hole in a die and filled it with a lead​ weight, then proceeded to roll it 209 times. The observed freque
ddd [48]

Answer:

Step-by-step explanation:

Given that the observed frequencies for the outcomes as follows:

To check this we can use chi square goodness of fit test.

H_0: equally likely\\H_a: not equally likely

(Two tailed test at 5% significance level)

Assuming equally likely expected observations are found out and then chi square is calculated as (0-E)^2/E

Df = 6-1 =5

Outcome Frequency Expected frequency (Obs-exp)^2/Exp

   

1 36 34.83333333 0.03907496

2 30 34.83333333 0.670653907

3 41 34.83333333 1.091706539

4 40 34.83333333 0.766347687

5 23 34.83333333 4.019936204

6 39 34.83333333 0.498405104

   

209 209          7.086124402

p value =0.214

Since p >alpha, we accept null hypothesis

It appears that the  loaded die does not behave differently than a fair​ die at 5% level of significance

5 0
3 years ago
Abby practiced for 11/12 of an hour and Lauren practiced for 2/3 of an hour. How long did they practice on Wednesday
Olin [163]
You first have to equalize all of the denominator

2/3 will be equal to :  8/12

Total of their practice time would be :

11/12 + 8/12    = 19/12 hours

Hope this helps
5 0
3 years ago
Read 2 more answers
shoe sells for a certain company were $25.9 billion. sales are expected to increase by about 20% in the next year. find the proj
ExtremeBDS [4]
25.9 × 1.2 = 31.08

$31.08 billion
3 0
3 years ago
Help please!!! I dont understand these questions<br><br><br>currently attaching photos dont delete
Katyanochek1 [597]

Answer:

  1. b/a
  2. 16a²b²
  3. n¹⁰/(16m⁶)
  4. y⁸/x¹⁰
  5. m⁷n³n/m

Step-by-step explanation:

These problems make use of three rules of exponents:

a^ba^c=a^{b+c}\\\\(a^b)^c=a^{bc}\\\\a^{-b}=\dfrac{1}{a^b} \quad\text{or} \quad a^b=\dfrac{1}{a^{-b}}

In general, you can work the problem by using these rules to compute the exponents of each of the variables (or constants), then arrange the expression so all exponents are positive. (The last problem is slightly different.)

__

1. There are no "a" variables in the numerator, and the denominator "a" has a positive exponent (1), so we can leave it alone. The exponent of "b" is the difference of numerator and denominator exponents, according to the above rules.

\dfrac{b^{-2}}{ab^{-3}}=\dfrac{b^{-2-(-3)}}{a}=\dfrac{b}{a}

__

2. 1 to any power is still 1. The outer exponent can be "distributed" to each of the terms inside parentheses, then exponents can be made positive by shifting from denominator to numerator.

\left(\dfrac{1}{4ab}\right)^{-2}=\dfrac{1}{4^{-2}a^{-2}b^{-2}}=16a^2b^2

__

3. One way to work this one is to simplify the inside of the parentheses before applying the outside exponent.

\left(\dfrac{4mn}{m^{-2}n^6}\right)^{-2}=\left(4m^{1-(-2)}n^{1-6}}\right)^{-2}=\left(4m^3n^{-5}}\right)^{-2}\\\\=4^{-2}m^{-6}n^{10}=\dfrac{n^{10}}{16m^6}

__

4. This works the same way the previous problem does.

\left(\dfrac{x^{-4}y}{x^{-9}y^5}\right)^{-2}=\left(x^{-4-(-9)}y^{1-5}\right)^{-2}=\left(x^{5}y^{-4}\right)^{-2}\\\\=x^{-10}y^{8}=\dfrac{y^8}{x^{10}}

__

5. In this problem, you're only asked to eliminate the one negative exponent. That is done by moving the factor to the numerator, changing the sign of the exponent.

\dfrac{m^7n^3}{mn^{-1}}=\dfrac{m^7n^3n}{m}

3 0
3 years ago
Margaret is going to make some triangular picture frames. She will use strips of wood that are 7 inches, 8 inches, and 6 inches
artcher [175]
In a triangle, the side opposite the largest angle is the longest one. So the answer is 8 inches.
3 0
3 years ago
Read 2 more answers
Other questions:
  • What are the zeros of the quadratic function f(x) = 2x2 + 8x – 3?
    13·1 answer
  • In a circle, a 90° sector has an area of 36π in2. What is the radius of this circle?
    15·1 answer
  • A bar graph shows that sports books received 9 votes. If the scale is 0 to 20 by twos, where should the bar end for the sports b
    9·1 answer
  • A house number is displayed on a plaque in the shape of a regular 7-sided polygon. The area of the plaque is 70 squared inches.
    13·1 answer
  • yasmine is having a birthday party with snacks and activities for her guests. At one, five people are sharing three quarters of
    6·1 answer
  • What is the answer to this equation ? 2^3-|-4|
    5·1 answer
  • The subject was greater than or less than
    12·1 answer
  • When you multiply a positive (+) by a positive (+) your answer is going to
    5·1 answer
  • Please help, no links. PLEASE!!!!
    5·1 answer
  • Ronnie is playing a card game called Subzero, where the goal is to get the lowest possible score. In the first round, Ronnie sco
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!