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
Pavel [41]
3 years ago
7

What do the following two equations represent?

Mathematics
2 answers:
prohojiy [21]3 years ago
5 0
B I took the quiz today
alexira [117]3 years ago
4 0
If you go on jiskha because you will find your answer by looking through search bar but the answe is B
You might be interested in
Please show work 7r + 21 = 49r
gulaghasi [49]

Answer:

1/2 = r

Step-by-step explanation:

7r + 21 = 49r

Subtract 7r from each side

7r-7r + 21 = 49r-7r

21 = 42r

Divide each side by 2

21/42 = 42r/42

1/2 = r

5 0
2 years ago
Read 2 more answers
What is a way to rename 1 thousands 2 hundred
qwelly [4]
1200 ... i think this you mean
8 0
3 years ago
Ill give you alot of points for this
rusak2 [61]

Answer:

ok

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Suppose the population standard deviation is σ = 5 , an SRS of n = 100 is obtained, and the confidence level is chosen to be 98%
beks73 [17]

Answer:

1.165.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.98}{2} = 0.01

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.01 = 0.99, so z = 2.33

Now, find the margin of error M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

In this problem, we have that:

\sigma = 5, n = 100. So

M = z*\frac{\sigma}{\sqrt{n}}

M = 2.33*\frac{5}{\sqrt{100}} = 1.165

So the correct answer is:

1.165.

6 0
3 years ago
It takes 45 minutes for 4 people to paint 5 walls how long does it take 6 people to paint 4 walls
Naily [24]

Answer:

54 Minutes

Step-by-step explanation:

45 minutes/5 walls/4 people=2.25 minutes per person per wall

2.25 times 6 times 4=54 minutes

3 0
3 years ago
Read 2 more answers
Other questions:
  • Determine the mean for: 57 59 60 58 58 56
    13·1 answer
  • Rewrite the expression 14m-(5+8m) without parentheses
    14·2 answers
  • I need help what is the right answer
    12·1 answer
  • 4. Find the shaded area of the figure below.
    11·2 answers
  • YOU RRR MEH HEROOOZZ! PUHLEASZEEE ITS 10:30pm!!
    9·1 answer
  • What are all the test in 6 grade
    5·2 answers
  • Solve for X<br> 130, 50 and X
    15·2 answers
  • Find the surface area of the following cylinder. Round your answers to the nearest tenth.
    14·1 answer
  • What is the LCD of 7/8 and 3/4?
    14·2 answers
  • Which angle is the angle of depression for the man looking at his dog?<br><br> A<br> B<br> C<br> D
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!