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
Setler [38]
3 years ago
10

Help I’m struggling !

Mathematics
2 answers:
aivan3 [116]3 years ago
8 0
I think the answer is 14
kap26 [50]3 years ago
7 0

Just plug in b =2 into 7+b

So 7 + 2 = 9

You might be interested in
I need help on these problems
Mazyrski [523]
Hope this helps and hope you can read it, if not let me know :)

4 0
3 years ago
Assume that a sample is used to estimate a population proportion μ . Find the margin of error M.E. that corresponds to a sample
hichkok12 [17]

Answer:

MoE = 1.645\cdot \frac{13.1}{\sqrt{772} } \\\\MoE = 1.645\cdot 0.47147\\\\MoE = 0.776\\\\

Step-by-step explanation:

Since the sample size is quite large, we can use the z-distribution.

The margin of error is  given by

$ MoE = z_{\alpha/2}(\frac{s}{\sqrt{n} } ) $

Where n is the sample size, s is the sample standard deviation and z_{\alpha/2} is the z-score corresponding to a 90% confidence level.

The z-score corresponding to a 90% confidence level is

Significance level = α = 1 - 0.90= 0.10/2 = 0.05

From the z-table at α = 0.05

z-score = 1.645

MoE = 1.645\cdot \frac{13.1}{\sqrt{772} } \\\\MoE = 1.645\cdot 0.47147\\\\MoE = 0.776\\\\

Therefore, the margin of error is 0.776.

3 0
3 years ago
WHOEVER ANSWERS FIRST GETS BRAINLIEST AND 100 POINTS <br> 0.1*√20000<br> -0.05*√28800
____ [38]

Answer:

0.1*√20000 = 14.1421356237

-0.05*√28800 = -8.48528137424

Step-by-step explanation:

8 0
2 years ago
Yukio says the scale from DEF to ABC is 3:1. Is Yukio Correct? Explain
Angelina_Jolie [31]

Answer: Yes, Yukio is correct.

Step-by-step explanation:

Assuming that Triangle DEF and ABC have the same angles (they do because they are right-angled), we can take the length from the larger triangle (DEF) and divide it by the length of the smaller triangle (ABC).

Length of DEF = 6cm

Length of ABC = 2cm

= 6/2

= 3

Proves that scale of DEF to ABC is 3:1

6 0
3 years ago
PLEASE HELP!!<br> Find the volume of the sphere rounded to the nearest hundredth
Studentka2010 [4]

Answer:

Step-by-step explanation:

The volume for a sphere is

V=\frac{4}{3}\pi r^3. Our radius is 21 inches, so

V=\frac{4}{3}\pi (21)^3 and

V=\frac{4}{3}\pi (9261). Multiplying straight across the top, using the fact that 3.14 is pi:

V=\frac{116318.16}{3} and divide to get that

V = 38772.72 in^3

7 0
3 years ago
Other questions:
  • Solve for y: 11-1/2y=3+6x
    13·2 answers
  • −p(51+z)=dz+84 solve for z
    12·2 answers
  • (x^3+6x^2+8x-3) (x-3)^-1
    9·1 answer
  • If a train travels 80 m/s in two hours and 20 minutes, how far has it traveled?
    7·1 answer
  • Michael walked 36 feet west and 15 feet south. how far is he from his original starting point?
    14·2 answers
  • Trigonometric functions
    10·1 answer
  • What is the perimeter of the object (Hint: Not all numbers should be used to find your answer) (Provide number only in your answ
    10·2 answers
  • An airline sells all 305 seats on a flight from New York City to Sydney, Australia, for $1,000 per seat, including all
    13·1 answer
  • Complete the equation 0.037 x ? = 37 pls hurry
    11·1 answer
  • What is the equation of the line?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!