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
iVinArrow [24]
3 years ago
6

20(-1.5r +0.75) answer

Mathematics
2 answers:
vovangra [49]3 years ago
7 0

Answer:

-30r + 15

Step-by-step explanation:

ludmilkaskok [199]3 years ago
5 0
-30r + 15

I hope this is what your looking for
You might be interested in
A study is conducted to determine if a newly designed text book is more helpful to learning the material than the old edition. T
Oksanka [162]

Answer:

The null and alternative hypotheses are:

H_{0}:\mu=75

H_{a} : \mu>75

Under the null hypothesis, the test statistic is:

t=\frac{\bar{x}-\mu}{\frac{s}{\sqrt{n}} }

Where:

\bar{x} =83 is the sample mean

s=9.8206 is the sample standard deviation

n=10 is the sample size

\therefore t= \frac{83-75}{\frac{9.8206}{\sqrt{10}} }

         =2.58

Now, we can find the right tailed t critical value at 0.01 significance level for df = n-1 = 10 - 1 = 9 using the t distribution table. The t critical value is given below:

t_{critical} =2.821

Since the test statistic is less than the t critical value, we therefore, fail to reject the null hypothesis and conclude that there is not sufficient evidence to support the claim that the people do better with the new edition.

7 0
2 years ago
Twenty-four students took a test. Fourteen students earned an A and 8 students earned a B. A student will be randomly chosen. Wh
Fofino [41]
Answer is 7/12 I know it is because, well I just know it is 
8 0
3 years ago
How many hours is 10:30 am to 3:30 pm?
sergejj [24]
It is 5 hours from 10:30am to 3:30pm.
6 0
3 years ago
What is the period of the graph of y = 5 sin (pi x) + 3?
Natasha2012 [34]

Equate whats inside (arguments) \sin with base period of sine function 2\pi and solve for x to get period,

\pi x=2\pi\implies x=2

So the period of the graph of the given function is precisely 2.

Hope this helps :)

7 0
3 years ago
What is the domain of the function shown below?
Lelechka [254]
The domain is B. -8 ≤ x < 3 and 4 ≤ x < 8
5 0
3 years ago
Other questions:
  • What the definition of a fraction?
    5·2 answers
  • How do you Factor c(squared)-8c ??
    5·1 answer
  • Round 92.471 to the nearest tenth
    7·2 answers
  • Adam is going to cook a turkey for 14 people and wants to allow 3 4 lb of turkey for each person.
    10·2 answers
  • 6. Which is a not a true statement about the figures shown below?<br> this is do soon thx
    5·2 answers
  • Mr. Brown's statistics class consists of 21 seniors. The class took two quizzes in one week, and 12 of the students in the class
    7·2 answers
  • The area of a rectangle is 144a^8b^4 square units. If the width of the rectangle is 8a²b^2 units, what is the length in units?
    6·2 answers
  • Quadrilateral ABCD has the following coordinates A (0,0) B(0,3) C(5,5) D(5,2). What kind of quadrilateral is ABCD? Prove your an
    5·1 answer
  • PLS ANSWER ASAP<br> Subtract.<br> −13−(−27)<br> Enter your answer in the box.
    5·2 answers
  • The graph of y = x2 + 4x + 3 is shown.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!