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
Anna71 [15]
3 years ago
12

Can someone solve this for me?

Mathematics
1 answer:
DaniilM [7]3 years ago
4 0
Answer
Is 8


Explanation


You might be interested in
The scientific notation 4.87 × 10^-3 has what value?
Lena [83]

Answer:

0.00487

Step-by-step explanation:

You move the decimal place back 3 places because it’s 10 to the -3

5 0
3 years ago
Read 2 more answers
The answer to this question asap please
Mkey [24]

At 13% significance level, there isn't enough evidence to prove the administrators to claim that the mean score for the​ state's eighth graders on this exam is more than 280.

<h3>How to state hypothesis conclusion?</h3>

We are given;

Sample size; n = 78

population standard deviation σ = 37

Sample Mean; x' = 280

Population mean; μ = 287

The school administrator declares that mean score is more (bigger than) 280. Thus, the hypotheses is stated as;

Null hypothesis; H₀: μ > 280

Alternative hypothesis; Hₐ: μ < 280

This is a one tail test with significance level of α  = 0.13

From online tables, the critical value at α  = 0.13 is z(c) = -1.13

b) Formula for the test statistic is;

z = (x-  μ)/(σ/√n)

z = ((280 - 287) *√78 )/37

z = -1.67

c) From online p-value from z-score calculator, we have;

P[ z > 280 ] =  0.048

d) The value for z = -1.67  is smaller than the critical value mentioned in problem statement z(c) = - 1.13  , the z(s) is in the rejection zone. Therefore we reject H₀

e) We conclude that at 13% significance level, there isn't enough evidence to prove the administrators to claim that the mean score for the​ state's eighth graders on this exam is more than 280.

Read more about Hypothesis Conclusion at; brainly.com/question/15980493

#SPJ1

5 0
2 years ago
Gavyn, Richard and Stephen share some sweets in the ratio 2:3:3. Gavyn gets 20 sweets. How many sweets are there altogether?
Brums [2.3K]

Answer:

80

Step-by-step explanation:

Gavyn's share is 20 sweets representing 2 parts of the ratio.

Divide 20 by 2 to find the value of one part of the ratio

\frac{20}{2} = 10 sweets ← 1 part of the ratio

3 parts = 3 × 10 = 30

Total number of sweets = 20 + 30 + 30 = 80

7 0
3 years ago
Evan earns $18 per hour. How much will he earn per hour after he gets a 5% raise?
Mnenie [13.5K]
$18 + $.9(5%) = $18.9
the thing with percentage is just moving decimals 100% = 1, 45% = .45, 10% = .1 and so on
so here you can solve it by taking 18 and multiplying it by .05(which is 5% if you understand my examples above)
.
or orally like i did, (note 10% is moving the decimal to the left one time so 10% of 18 is 1.8 and half of 1.8 is .9 which is 5% since the half of 10% is 5% lol )
3 0
3 years ago
Read 2 more answers
Hi! I really need help on transversals of parallel lines: name angle pairs. If someone can help it would be great!
irina1246 [14]
Angle KJL and Angle IJL are supplementary angles
Supplementary angles are angles that add up to 180 degrees
5 0
1 year ago
Read 2 more answers
Other questions:
  • Write the fraction 14/16 in simplest form. If the fraction is in simplest form
    5·2 answers
  • Jessie's bus ride to school is 5 minutes more then 2/3 the time roberts bus ride. if jessie's time riding the bus is y and rober
    15·1 answer
  • Please answer!! :) <br> I’ll make you brainiest!<br> Ty!
    5·1 answer
  • What is 13 over 100 as a decimal
    5·2 answers
  • 1/4s - 4 - 2/3s = 5<br><br> what is the value of s
    7·2 answers
  • Which shape could be thought of as being created by stacking congruent polygons
    9·2 answers
  • Harry was given an assignment. He had 42 days to get 336 tasks done at work.
    12·1 answer
  • Help!!!!!!!!!!!!!!!!!!
    14·2 answers
  • If theater has 22 rows and the last row has 63 seats and the first row has 27 with the common difference of 3 how many seats are
    10·1 answer
  • *THIS IS FROM K12 MIDDLE SCHOOL*
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!