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
otez555 [7]
3 years ago
11

SOMEONE PLEASE HELP​

Mathematics
1 answer:
-Dominant- [34]3 years ago
5 0

Answer:

15c+3b=66 and 25c+5b=110

Step-by-step explanation:

You might be interested in
NEED HELP ASAP I WILL GIVE BRAINLIEST
inn [45]

Answer: It's the second option

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Check whether 7+3x is a factor of 3x^3+7x
BartSMP [9]

Answer:

no

Step-by-step explanation:

refer to picture for solution

3 0
3 years ago
Which of the following estimates at a 95% confidence level most likely comes from a small sample
Nikitich [7]

Answer:

Answer is c

Step-by-step explanation:

In hypothesis testing whether to accept or reject null hypothesis, normally we find one method as using confidence interval.  If the test statistic lies within confidence interval, we accept otherwise we reject.

For arriving confidence intervals we add and subtract margin of error from the mean we use in null hypothesis.

Margin of error = std error * critical value of test (Z or t etc)

For the same std deviation, std error = std dev/sq rt of sample size

Thus std error is inversely proportional to the square root of sample size.

If n becomes larger, std error becomes smaller and vice versa.

So margin of error increases for smaller sample size.

Since we have to select confidence level from a small sample, we have to select one which has the greatest margin of error=18

Hence answer is

c)  71%(+/-18%)

5 0
3 years ago
Once sales tax is included, an $89 canoe ends up costing $97.90. What is the sales tax percentage?
cluponka [151]

Answer:

10%

Step-by-step explanation:

First, 97.90-89=8.90

8.90/89 = x/100

8.90 x 100 = 890

890/89=10%

Check Answer:

89 x 10%=8.90

89+8.90= 97.90

Therefore, the sales tax percentage is 10%

7 0
2 years ago
Read 2 more answers
Word algebraic expression for 25 - 0.6x
maxonik [38]
Twenty five subtracted by six tenths times "x"
4 0
3 years ago
Other questions:
  • Suzy was adding numbers on a number line. She started at –2 and then she added –3. She wrote that her answer was +5.
    6·2 answers
  • Write the percent as a fraction or mixed number in simplest form
    11·1 answer
  • Mara is building a wind chime. She needs string in the following lengths: six
    15·1 answer
  • Their are 35 green marbles out of 60 marbles in the bag what is the ratio of the green marbles to total marbles?
    6·1 answer
  • Mark jogged 0.6 miles. Caroline jogged 0.49 miles. Write an inequality to compare the distances they jogged
    6·2 answers
  • Randy took a standardized test that is normally distributed. He scored a 105 on the test. The nationwide mean score on the test
    15·1 answer
  • The stock market dropped 220 points on Monday. It lost another 48 points on Tuesday, and on Wednesday it gained 96 points. What
    7·1 answer
  • Will give brainliest.
    8·1 answer
  • You are going to use an incline plane to lift a heavy object to the top of a shelving unit with a height of 8 ft. The base of th
    5·2 answers
  • Please help me with this question​<br>please do fast
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!