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
Naya [18.7K]
3 years ago
9

A rectangle has a width one less than the length. If the perimeter is 30 units find the width and length

Mathematics
1 answer:
Olegator [25]3 years ago
5 0

Answer:

7 units by 8 units

Step-by-step explanation:

ALL POSSIBLE PERIMETERS:

1x14

2x13

3x12

4x11

5x10

6x9

7x8

You might be interested in
Suppose we are interested in analyzing the weights of NFL players. We know that on average, NFL players weigh 247 pounds with a
Diano4ka-milaya [45]

Answer:

a) The standard error would be of 8.58 pounds.

b) The margin of error is 14.11 pounds.

c) The 90% confidence interval for the population mean is between 232.89 pounds and 261.11 pounds

Step-by-step explanation:

a.What is the standard error?

The standard error is

s = \frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample. So

s = \frac{47}{\sqrt{30}} = 8.58

The standard error would be of 8.58 pounds.

b.What is the margin of error at 90% confidence?

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.9}{2} = 0.05

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.05 = 0.95, so z = 1.645

Now, find the margin of error M as such

M = z*s = 1.645*8.58 = 14.11

The margin of error is 14.11 pounds.

c. Using my sample of 30, what would be the 90% confidence interval for the population mean?

Lower bound: Sample mean subtracted by the margin of error.

247 - 14.11 = 232.89 pounds

Upper bound

247 + 14.11 = 261.11 pounds

The 90% confidence interval for the population mean is between 232.89 pounds and 261.11 pounds

4 0
3 years ago
Tuto
Damm [24]

Answer:

8r+8pg-pq

Step-by-step explanation:

The subtractable pg cancels out one of the 9 pg's. So 9 pg-1 pg= 8 pg

Hope this helps!

8 0
3 years ago
Four tickets to the baseball game and 4 meal tickets cost $144.
Doss [256]

Answer: $108

Step-by-step explanation:

what is 144 / 4 ? 36 = one meal ticket

what is 36 x 3 ? 108

each game ticket costs 108 dollars

6 0
2 years ago
What is 3/4 divided by 7/12 as a fraction?
Yakvenalex [24]

Answer:

9/7

Step-by-step explanation:

Z4jshrsursursurwruwurwyrwruw4hwurw

7 0
1 year ago
Read 2 more answers
Solve the formula for R.
kati45 [8]

The Last Answer

R = PV/nT

6 0
3 years ago
Read 2 more answers
Other questions:
  • Please help me with these problems !
    14·1 answer
  • Please show work<br>its due soon<br>i really need answers
    14·1 answer
  • Muriel sees she has written a system of two linear equations that has an infinite number of solutions one of the equations of th
    15·2 answers
  • What is the difference of −1,098 and -895.9
    7·1 answer
  • The first two terms of geometric sequence are shown.
    5·1 answer
  • The length of a rectangle is three feet less than twice its width. If x represents the width of the rectangle, in feet, write in
    6·1 answer
  • Charlie buys a new Bey Blade for $11.38. He gives the cashier $15.00. How much change will he get back? Select TWO ways he will
    7·2 answers
  • Help with this question please
    5·2 answers
  • 21.5% of 825 is<br> what number?
    12·1 answer
  • Between which two consecutive numbers does the root of 90 lie
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!