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
Paraphin [41]
2 years ago
15

Just giving some po!nts away yUh but what is 2+2

Mathematics
1 answer:
denis-greek [22]2 years ago
7 0

Answer:

4

Step-by-step explanation:

2+2=4

im not sure if this is correct im so sorry if its not i worked very hard on this

You might be interested in
The baltimore ravens kansas city chiefs
FinnZ [79.3K]
What’s your question
6 0
3 years ago
Read 2 more answers
3(x-4) = x + 14<br> How do you solve this equation
Dmitry_Shevchenko [17]

Answer:

x=13

Step-by-step explanation:

you have to isolate the variable

3(x-4)=x+14

distribute

3x-12=x+14

subtract 14 from each side

3x-26=x

subtract 3x from each side

-26=-2x

divide each side by -2

13=x

flip sides

x=13

hope this helps!!! :)

4 0
3 years ago
Read 2 more answers
Elaina just began working as an occupational therapist assistant for $21.00 per hour. For each paycheck she receives, 12% is ded
lora16 [44]

Answer:

Elaina just began working as an occupational therapist assistant for $21.00 per hour. For each paycheck she receives, 12% is deducted from the gross pay for Federal Withholding Tax. In addition, 1.45% is deducted for Medicare and 6.2% for Social Security. Below is Elaina’s paycheck with missing information.

Elaina’s gross pay for a two week period is $1680.00, what is her net pay?

Step-by-step explanation:

c

3 0
3 years ago
Write an expression equivalent to e+e+e+e+e that is a sum of two terms.
slamgirl [31]

Answer:

5e

5(e)

Step-by-step explanation:

please mark this answer as brainliest

5 0
2 years ago
A study of the number of business lunches that executives in the insurance and banking industries claim as deductible expenses p
gizmo_the_mogwai [7]

Answer:

t=\frac{9.1-8}{\sqrt{\frac{(1.9)^2}{40}+\frac{(2.1)^2}{50}}}}=2.604  

p_v =2*P(t_{(88)}>2.604)=0.0108

So the p value is a very low value and using any significance level for given \alpha=0.05 always p_v so we can conclude that we have enough evidence to reject the null hypothesis, and there is enough evidence to conclude that the two means are significantly different at 5%

Step-by-step explanation:

Data given and notation

\bar X_{1}=9.1 represent the mean for the sample 1

\bar X_{2}=8 represent the mean for the sample 2

s_{1}=1.9 represent the sample standard deviation for the sample 1

s_{2}=2.1 represent the sample standard deviation for the sample 2

n_{1}=40 sample size for the group 1

n_{2}=50 sample size for the group 2

t would represent the statistic (variable of interest)

Concepts and formulas to use

We need to conduct a hypothesis in order to check if the mean are different , the system of hypothesis would be:

Null hypothesis:\mu_{1} = \mu_{2}

Alternative hypothesis:\mu_{1} \neq \mu_{2}

If we analyze the size for the samples both are higher than 30 and the population deviations are not given, so for this case is better apply a t test to compare means, and the statistic is given by:

t=\frac{\bar X_{1}-\bar X_{2}}{\sqrt{\frac{s^2_{1}}{n_{1}}+\frac{s^2_{2}}{n_{2}}}} (1)

t-test: Is used to compare group means. Is one of the most common tests and is used to determine whether the means of two groups are equal to each other.

Calculate the statistic

We can replace in formula (1) the results obtained like this:

t=\frac{9.1-8}{\sqrt{\frac{(1.9)^2}{40}+\frac{(2.1)^2}{50}}}}=2.604  

Statistical decision

The first step is calculate the degrees of freedom, on this case:

df=n_{1}+n_{2}-2=40+50-2=88

Since is a bilateral test the p value would be:

p_v =2*P(t_{(88)}>2.604)=0.0108

So the p value is a very low value and using any significance level for given \alpha=0.05 always p_v so we can conclude that we have enough evidence to reject the null hypothesis, and there is enough evidence to conclude that the two means are significantly different at 5%

3 0
2 years ago
Other questions:
  • A translation moves point V(-2,3) to V’(2,7). Which are true statements about the translation?
    13·1 answer
  • Amy is applying for a job in two companies. The given table shows the salary in dollars (y) that Company 1 is offering if she wo
    10·2 answers
  • The windows on a building are proportional to the size of the building. The height of each window is 18in., and the width is 11i
    11·2 answers
  • F(x) = –27 + 9.23 + 3x is even, odd or neither.
    12·1 answer
  • Three of the angles of a quadrilateral are 1200, 480 and 920.<br> What is the size of the 4th angle?
    13·1 answer
  • Answer fast please and thank you!
    12·1 answer
  • Side lengths in screens that have a ratio of 16:9.
    14·2 answers
  • Jane will spin the spinner below 30 times. How many times would Jane expect it to land on an even number? the numbers on the spi
    10·1 answer
  • Help pls don not under stand
    11·1 answer
  • Answer this fully! i need to know what x equals
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!