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
jeka57 [31]
3 years ago
12

Anyone got an answer also it doesn't gimme the option of making this 5pts :(

Mathematics
1 answer:
Shtirlitz [24]3 years ago
8 0

Answer:

Step-by-step explanation:

Each of the squares has trinomials that factor. x^2 - 14x + 49 = (x - 7)^2

When you take the square root (to get the side length) you get x - 7. So the length of each square is x - 7) = 0;..........x=7 That's the answer to a.

The answer to b is the same. The width =7

It's a square both sides have to be equal.  

The length of the rectangle when the two squares are put together is 7 +7 = 14.

Answer: Question a = 7..... Question b = 7 ......... Question C = 14

You might be interested in
60-5t is no more than 35 -5t is no more than -25t is at least 5 solve with correct answer
fiasKO [112]
The answer is 60-5t<35-5t<_25t>5
4 0
3 years ago
Evaluate the expression. 4–4÷2
n200080 [17]

Answer:

2.

Step-by-step explanation:

7 0
3 years ago
Please ASAP.<br> Find the value of u.
shusha [124]

Answer:

The answer is B 62

Step-by-step explanation:

I just divid 124 by 2

5 0
3 years ago
Christina used 7.36 cups of flour to bake 0.8 cakes. How much flour, on average, did she put in each cake?
olga2289 [7]

Answer:

5.8 cups of flours

Step-by-step explanation:

5 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
Other questions:
  • 83 POINTS !!! I NEED HELP WITH THIS PLZZ DONT SCAM ME I NEED HELP WITH THIS!!! PLZZ HELP ME OUT
    14·1 answer
  • What is the first 6 multiplies of 8
    12·1 answer
  • The high temperature was 92°F. This was 24°F higher than the overnight low temperature. Write an equation to determine whether t
    11·2 answers
  • Meg deposited a $3,000 bonus check in a new savings account. The account has an interest rate of 3% for 5 years. The interest is
    15·1 answer
  • A recipe for cake needs 22 cups
    10·2 answers
  • Can someone tell me everything I need to know before a integer test please
    13·2 answers
  • PLEASE HELP! I don’t understand
    5·2 answers
  • HELP FAST I HAVE 3 MINUTES SHOW A LITTLE WORK PLEASE! thank you sm thank you thank you!
    7·1 answer
  • WILL MARK BRAINLIEST IF YOU HELP use the line plot to answer the questions the line plot shows the length of wood strips in inch
    5·1 answer
  • Desperate Please Hurry Up
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!