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
zalisa [80]
2 years ago
9

Plz can you just answer c

Mathematics
1 answer:
Rasek [7]2 years ago
5 0

Answer:

c. The mean is the same as the average. The average is (6 * 5 + 7 * 4 + 8 * 7 + 9 * 10 + 10 * 4) / (5 + 4 + 7 + 10 + 4) = 244 / 30 = 8.133.

You might be interested in
Am i correct? What is the answer to the next one?
podryga [215]

Answer:

With base of 3: 3^{4}

With base of 9: 9^{2}

Step-by-step explanation:

Use 3 and 9 as the base of the power.

3^{4} =81\\9^{2} =81

8 0
3 years ago
A rug is shaped like a parallelogram with a base of 41⁄2 ft. and a height of 2 1⁄4 ft. What is the area of the rug? Draw and lab
Bess [88]

Answer:

46.125 square feet or 46\dfrac{1}{8} sq. feet.

Step-by-step explanation:

The rug is shaped like a parallelogram with a base of \frac{41}{2} = 20.5 feet. and a height of 2\dfrac{1}{4} = 2.25 feet.

Now, the area of a parallelogram is given by the product of one side as the base and the perpendicular distance of that side from the opposite parallel side as height.

Now, the area of the given parallelogram is (20.5 × 2.25) = 46.125 square feet. (Answer)

7 0
3 years ago
When Carson runs the 400 meter dash, his finishing times are normally distributed with a mean of 65 seconds and a standard devia
just olya [345]

Given Information:  

Mean time to finish 400 meter dash  = μ = 65 seconds

Standard deviation to finish 400 meter dash = σ = 2.5 seconds  

Confidence level = 95%

Required Information:  

95% confidence interval = ?

Answer:  

 CI = 60 \: to \: 70 \: seconds

Step-by-step explanation:  

In the normal distribution, the empirical rule states approximately 68% of all the data lie within 1 standard deviation from the mean, approximately 95% of all the data lie within 2 standard deviations from the mean and approximately 99.7% of all the data lie within 3 standard deviations from the mean.

The confidence interval for 95% confidence limit is given by

 CI = \mu \pm 2\sigma

Since approximately 95% of all the data lie within 2 standard deviations from the mean. μ is the mean time Carson takes to finish 400 meter dash and σ is the standard deviation.

 CI = 65 \pm 2(2.5)

 CI = 65 \pm 5

 CI = 65 - 5 \: to \: 65 + 5

CI = 60 \: to \: 70 \: seconds

Therefore, the 95% confidence interval is between 60 to 70 seconds

What does it mean?  

It means that we are 95% confident that the Carson's mean to finish 400 meter dash is within the interval of (60, 70).

4 0
2 years ago
H=L^2/f•c solve for L
nata0808 [166]

Answer:

±sqrt( H *f•c)= L

Step-by-step explanation:

H=L^2/f•c

Multiply each side by fc

H *fc=L^2/f•c  * fc

H *f•c=L^2

Take the square root of each side

±sqrt( H *f•c)= sqrt(L^2)

±sqrt( H *f•c)= L

4 0
2 years ago
A rowing team rowing with the current traveled 36 km in 3 h. Rowing against the current, the team rowed 12 km in the same amount
alex41 [277]

Answer:

  • team: 8 kph
  • current: 4 kph

Step-by-step explanation:

The downstream speed is ...

  speed = distance / time

  speed = 36 km/(3 h) = 12 km/h

The upstream speed is ...

  12 km/(3 h) = 4 km/h

__

If b and c represent the speeds of the boat and current, respectively, then we have ...

  b + c = 12

  b - c = 4

Adding these gives ...

  2b = 16

  b = 8

  c = b -4 = 4

The rate of the rowing team in calm water is 8 km/h; the rate of the current is 4 km/h.

6 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following could be the sides of a triangle
    10·1 answer
  • 15 3/4 divided by 7 5/7. Help
    12·2 answers
  • Walt is mixing fruit punch for a party. He combines 1 gallon 2 quarts 3 pints of orange juice, 1 gallon 3 quarts 7 pints of pine
    9·1 answer
  • Shari is adding these fractions: <br><br> 1/3 + 1/4<br><br> What's her next step?
    15·2 answers
  • Factor 200x to the 2- 18
    15·1 answer
  • What is the code to this puzzle, pls help
    10·1 answer
  • 11/ 42 Marks
    13·1 answer
  • Two stores sell the same computer for the same original price. Store A advertises that the computer is on sale for 25% off the o
    13·2 answers
  • Seth bought a 12 ounce jar of peanut butter for $ 3.60. What is the unit price?
    9·1 answer
  • Find the midpoint of points A(9,9) and B(2,-1)
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!