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
BigorU [14]
3 years ago
12

a cafe offers senior citizens a 15% discount off its regular rice of 8.95 for the dinner buffet. what percent of the regular pri

ce is the price for the senior citizens?
Mathematics
1 answer:
natta225 [31]3 years ago
4 0

Answer: 85%

Step-by-step explanation:

The regular price is 8.95, with a 15% discount for Seniors. So the senior price would be 100%-15%=85% of the regular price.

You might be interested in
Select all the expressions that are solutions to 5=23x .
Ulleksa [173]
The answer would be c 5 divided by 2/3
4 0
3 years ago
If the ratio of red roses is 4 to 6 and there are a total of 50 roses, how many of them are yellow?
raketka [301]
17 because 4 x 1.5 = 6, 50 / 1.5 = 33.33
5 0
3 years ago
List the fractions in descending order of 2/5 8/9 4/5 1/3 3/10 ​
snow_lady [41]

Answer:

8/9, 4/5, 2/5, 1/3, 3/10

Step-by-step explanation:

2/5 = 0.4 8/9 = 0.888 4/5 = 0.8 1/3 = 0.333 3/10 = 0.3

8 0
2 years ago
PLEASE HELP ME I BEG I WILL GIVE BRAINLIEST
ohaa [14]

Answer:

Mean = (2.2 + 2.4 + 2.5 + 2.5 + 2.6 + 2.7)/6 = 2.48

Standard deviation = √(summation(x - mean)²/n

n = 6

Summation(x - mean)² = (2.2 - 2.48)^2 + (2.4 - 2.48)^2 + (2.5 - 2.48)^2 + (2.5 - 2.48)^2 + (2.6 - 2.48)^2 + (2.7 - 2.48)^2 = 0.1484

Standard deviation = √(0.1484/6

s = 0.16

Standard error = s/√n = 0.16/√6 = 0.065

Part B

Confidence interval is written as sample mean ± margin of error

Margin of error = z × s/√n

Since sample size is small and population standard deviation is unknown, z for 98% confidence level would be the t score from the student t distribution table. Degree of freedom = n - 1 = 6 - 1 = 5

Therefore, z = 3.365

Margin of error = 3.365 × 0.16/√6 = 0.22

Confidence interval is 2.48 ± 0.22

Part C

We would set up the hypothesis test. This is a test of a single population mean since we are dealing with mean

For the null hypothesis,

H0: µ = 2.3

For the alternative hypothesis,

H1: µ > 2.3

This is a right tailed test

Since the number of samples is small and no population standard deviation is given, the distribution is a student's t.

Since n = 6

Degrees of freedom, df = n - 1 = 6 - 1 = 5

t = (x - µ)/(s/√n)

Where

x = sample mean = 2.48

µ = population mean = 2.3

s = samples standard deviation = 0.16

t = (2.48 - 2.3)/(0.16/√6) = 2.76

We would determine the p value using the t test calculator. It becomes

p = 0.02

Assuming significance level, alpha = 0.05.

Since alpha, 0.05 > than the p value, 0.02, then we would reject the null hypothesis. Therefore, At a 5% level of significance, the sample data showed significant evidence that the mean absolute refractory period for all mice when subjected to the same treatment increased.

Step-by-step explanation:

7 0
3 years ago
Find the GCF of -10c2d and 15 ca2
jonny [76]

Answer:

5c

Step-by-step explanation:

5c is the only value you can take out of both factors

4 0
3 years ago
Other questions:
  • 5×(-2w-4) what's the answer.
    10·2 answers
  • PLZ HELP ME, I AM ONLY IN LITTLE GRADE AND ITS EASY FOR YOU GUYS AND PLZ HELPPPPPPPPPPPP!!!!!!!!!!!
    13·1 answer
  • Of the song on a playlist, 72% are country songs. Which fraction is equivalent to 72%
    15·2 answers
  • What is 6.84 x 10-7 written as a decimal number?
    14·1 answer
  • Mai is filling her fish tank. How many gallons of water will be in the fish tank after
    9·1 answer
  • What does the “equity” of a tax mean?
    12·1 answer
  • The cone has a base diameter of 17 inches and a height of 6 inches. Find the volume of the cone using 3.14/pi. Round your answer
    13·1 answer
  • Alyssa used a can of paint that was 5/6 full to touch paint her house. When she was done, the bucket was 11/30 full. What fracti
    6·1 answer
  • Plsss help on my test
    7·1 answer
  • If a man drives 600km from Johannesburg to Durban. He starts his journey with a full tank of petrol. If the man drives at an ave
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!