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
xeze [42]
3 years ago
14

ZA and B are supplementary

Mathematics
1 answer:
ANEK [815]3 years ago
5 0

Answer:

< A+< B =180

2n + 3n +20 =180

5n = 160

n = 32

(B= 116 ..........

answer is C

You might be interested in
What is the present value of $4,900 per year at a discount rate of 10 percent if the first payment is received 6 years from now
Nesterboy [21]

Answer:

17640

Step-by-step explanation:

at a discount of 10% per year $4900 is equal to $490 per year

payment started 6 years ago from now and ended 20 years from now

therefore there is an accumulation of 26 years

for 26 years = 26 *$490= $12740

present value therefore = $4900+$12740=$ 17640

4 0
3 years ago
Mr.Jimerson earns $24 per hour working. He qualifies for a 15% raise in salary. What is his salary after his raise?
miv72 [106K]
(sorry if this is wrong but hope this helps)

ANSWER: $27.60

STEP BY STEP:

You have to multiply 24 by 15%. Start by changing 15% into a decimal of .15. Then multiply 24 by .15 to get an answer of $3.60. This is how much more Mr. Jimerson will earn. Then add the original amount he earned by the amount the is now gaining. This gets you $27.60.
6 0
4 years ago
A car travels 45km in an hour. In each of the next two hours, it travels 78km. What is the average speed of the car.
romanna [79]

Answer:

The average speed of car is 67 kilometers per hour.

Step-by-step explanation:

Given that:

Distance travelled in one hour = 45 km

Distance travelled in next 2 hours = 78*2 = 156 km

Total distance = 45+156 = 201

Total time = 1+2 =  3 hours

Average speed of the car = \frac{Total\ distance}{Total\ time}

Average speed of the car = \frac{201}{3}

Average speed of the car = 67 km/hr

Hence,

The average speed of car is 67 kilometers per hour.

7 0
3 years ago
Kray sells personalized photo frames. She charges $12 for the frame plus $0.25 for each letter the customer wants to engraved on
VARVARA [1.3K]

Answer:

c=0.25n+12

Step-by-step explanation:

6 0
3 years ago
The compressive strength of concrete is normally distributed with mu = 2500 psi and sigma = 50 psi. A random sample of n = 8 spe
ipn [44]

Answer:

The standard error of the sample mean is _17.677_ psi.

Step-by-step explanation:

<u>Explanation</u>:-

A random sample of n = 8 specimens is collected.

Given sample size is n = 8

Given mean of the population 'μ' = 2500 psi

standard deviation 'σ' = 50 psi

Let x⁻ is the mean of the observed sample

Standard error of the sample mean = \frac{S.D}{\sqrt{n} }      ...(i)

Given Population of standard error (S.D) 'σ' = 50 psi

Now substitute all values in (i)

S.E = \frac{50}{\sqrt{8} } =17.677

<u>Conclusion</u>:-

The standard error of the sample mean is _17.677psi.

7 0
3 years ago
Other questions:
  • There are (2^4)^2 ⋅ 2^0 books in a cupboard. What is the total number of books in the cupboard?
    14·1 answer
  • Help me help you help us
    11·1 answer
  • Otto used 6 cups of whole wheat flour and x cups of white flour in the recipe. What is the equation that can be used to find the
    7·2 answers
  • What is 6/8 * 4/6?<br> Please answer this!!!
    12·1 answer
  • I will give Brainliest to anyone who answers
    13·1 answer
  • The height of one solid limestone square pyramid is 12 m. A similar solid limestone square pyramid has a height of 15 m. The vol
    11·1 answer
  • Inez has 699 pennies and 198 nickels. Estimate how many more pennies than nickels she has.
    11·2 answers
  • I kinda forgot how to multiply fractions and whole numbers, can someone re-explain it to me please?
    9·1 answer
  • Find the missing side or angle.
    11·1 answer
  • Match the pairs of equivalent expressions.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!