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
attashe74 [19]
3 years ago
12

Expand the expression: -5(4-7c)​

Mathematics
2 answers:
Ronch [10]3 years ago
5 0

Answer:

-20 + 35c

Step-by-step explanation:

Distribute the -5 in the equation.

V125BC [204]3 years ago
4 0
The express-5(4-7c) is an expression where u have to distribute to find the answer so the answer is 20-35c
You might be interested in
Evaluate how organizations can use one-sample hypothesis testing to determine if there are performance issues in the organizatio
Margarita [4]

Answer:

Organizations can use one-sample hypothesis test to determine if there are performance issues in many ways.

It can be applied to the performance of a sector, a machine, a product, an advertising campaing, etc.

For example, we can take the example of a machine. It may be claimed that a specific machine performs significantly worse than the average.

This average would be the population mean: the average performance of the machines of the same type or process.

Then, a sample of the performance of the machine in study is taken and the hypothesis test can be performed to test the claim that this machine performs significantly worse.

Step-by-step explanation:

For example, we have an historic performance for this type of machine of 100 units a day. The machine A in study is sampled 14 days and have a performance of 92 units a day, with a sample standard deviation of 12 units/day. We have to test the claim that the machine A makes less units per day than the average.

Then, the null and alternative hypothesis are:

H_0: \mu=100\\\\H_a:\mu< 100

The significance level is 0.05.

The sample has a size n=14.

The sample mean is M=92.

As the standard deviation of the population is not known, we estimate it with the sample standard deviation, that has a value of s=12.

The estimated standard error of the mean is computed using the formula:

s_M=\dfrac{s}{\sqrt{n}}=\dfrac{12}{\sqrt{14}}=3.2071

Then, we can calculate the t-statistic as:

t=\dfrac{M-\mu}{s/\sqrt{n}}=\dfrac{92-100}{3.2071}=\dfrac{-8}{3.2071}=-2.4944

The degrees of freedom for this sample size are:

df=n-1=14-1=13

This test is a left-tailed test, with 13 degrees of freedom and t=-2.4944, so the P-value for this test is calculated as (using a t-table):

P-value=P(t

As the P-value (0.0134) is smaller than the significance level (0.05), the effect is  significant.

The null hypothesis is rejected.

There is enough evidence to support the claim that machine A produces significantly less units per day than the average.

3 0
3 years ago
Use the zero product property to find the solutions to the equation x2 + x – 30 = 12.
Butoxors [25]

Answer:

x= 6, -7

Step-by-step explanation:

3 0
3 years ago
This is due tomorrow PLZ HELP IMMEDIATELY
horsena [70]
The value of X would be 9
8 0
3 years ago
Read 2 more answers
Slove system of equation.<br><br> 2x - 6y = 8<br> -3x + 9y = 12
Bond [772]
Answers:

2x - 6y = 8 -> x = 4 + 3y

-3x + 9y = 12 -> x = -4 + 3y
7 0
2 years ago
Which of the following is a complex number
Kisachek [45]
What following are you choosing from


8 0
3 years ago
Read 2 more answers
Other questions:
  • Which graph represents the function?
    14·1 answer
  • PLEASEEE HELP ME ANSWER THIS QUESTION!!!!!
    13·1 answer
  • Discrete and continuous random variables
    11·1 answer
  • Find the probability of having 2,3, or 4 successes in five trials of a binomial experiment in which the probability of success i
    8·1 answer
  • I needdddd helpppppp
    13·1 answer
  • What is the domain of the exponential function shown below?
    12·1 answer
  • Anyone know how to answer this question
    8·1 answer
  • What is the singular multiplier for 35%
    10·1 answer
  • Please help me ASAP
    15·1 answer
  • Write the following set in roster method:
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!