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
stellarik [79]
3 years ago
13

Which of these expressions is equal to 2(43 - p)?

Mathematics
1 answer:
nirvana33 [79]3 years ago
5 0

Answer:

C. (2×43) - (2×p)

Step-by-step explanation:

The question is 2(43-p)

Which means 2 is multiplying the bracket.

So the answer to the question is 2×43 - 2×p

Which will give us 86 - 2p

So you then solve all the possible answers to see if it the same answer as the one we got

You might be interested in
Help with the question above I have NO IDEA
Archy [21]

Answer:

I would say not a function but im not 100% sure, i would go with not a function. Tell me if im wrong.

Step-by-step explanation:

5 0
3 years ago
What is the total number degrees of all interior angles of a triangle?
BARSIC [14]
<span> the total number degrees of all interior angles of a triangle is 180</span>
3 0
3 years ago
In Jamie's drawer are 3 pairs of blue socks, 1 pair
Effectus [21]

Answer:

24%

Step-by-step explanation:

I think this is right. im sorry if its not but i went to a percent calculator and checked my answer. hope this helped :)

6 0
3 years ago
A phone manufacturer wants to compete in the touch screen phone market. He understands that the lead product has a battery life
alisha [4.7K]

Answer:

a)

The null hypothesis is H_0: \mu \leq 10

The alternative hypothesis is H_1: \mu > 10

b-1) The value of the test statistic is t = 1.86.

b-2) The p-value is of 0.0348.

Step-by-step explanation:

Question a:

Test if the battery life is more than twice of 5 hours:

Twice of 5 hours = 5*2 = 10 hours.

At the null hypothesis, we test if the battery life is of 10 hours or less, than is:

H_0: \mu \leq 10

At the alternative hypothesis, we test if the battery life is of more than 10 hours, that is:

H_1: \mu > 10

b-1. Calculate the value of the test statistic.

The test statistic is:

We have the standard deviation for the sample, so the t-distribution is used to solve this question

t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, s is the standard deviation and n is the size of the sample.

10 is tested at the null hypothesis:

This means that \mu = 10

In order to test the claim, a researcher samples 45 units of the new phone and finds that the sample battery life averages 10.5 hours with a sample standard deviation of 1.8 hours.

This means that n = 45, X = 10.5, s = 1.8

Then

t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}

t = \frac{10.5 - 10}{\frac{1.8}{\sqrt{45}}}

t = 1.86

The value of the test statistic is t = 1.86.

b-2. Find the p-value.

Testing if the mean is more than a value, so a right-tailed test.

Sample of 45, so 45 - 1 = 44 degrees of freedom.

Test statistic t = 1.86.

Using a t-distribution calculator, the p-value is of 0.0348.

5 0
2 years ago
Could someone help are my answers right
liq [111]
Yes they are right. 2+784
8 0
3 years ago
Other questions:
  • If the radius of a circle measures 2 inches, what is the measure of its diameter?
    5·1 answer
  • Can someone explain to me why this is right?
    6·1 answer
  • Use addition to solve the linear system of equations. Include all of your work in your final answer.
    13·1 answer
  • Sketch the graph of a function which satisfies all of the following conditions:
    13·1 answer
  • The factors of a quadratic function are 2x-3 and x-3. what is the axis of symmetry of this function?
    9·1 answer
  • A scientist wants to create 120 ml of a solution that is 30% acidic. To create this solution, she has access to a 20% solution a
    7·1 answer
  • Are 5/8 and 4/7 proportional
    15·2 answers
  • Your resturaunt bill is 42$ you want to leave a 15% tip, what should the tip be
    11·2 answers
  • Interval notation on a number line
    5·1 answer
  • How do I write a percent less than 1 ? such as. 0.001​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!