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
Anuta_ua [19.1K]
3 years ago
11

The length of a rectangle is twice as long as the width. The area is 400 feet. Find the length and with of the rectangle.

Mathematics
1 answer:
stich3 [128]3 years ago
4 0

Answer:

A=400, L=2W, L*W=A so, L*W=400, so, 400=2W*W or 200=W*W or 200=W^{2}, \sqrt{200\\ = W, L=2(\sqrt{200\\) and W=\sqrt{200\\, W=14.14 and L=28.28

Step-by-step explanation:

You might be interested in
Y=3x + 5 <br> Please help
Evgesh-ka [11]

Answer:

whats x?

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
For the following hypothesis test, determine the null and alternative hypotheses. Also, classify the hypothesis test as two-tail
bagirrra123 [75]

Answer:

Option B:

H_0: \mu = 22.1

H_a: \mu \neq 22.1

Classification:

The hypothesis test is Two-tailed.

Step-by-step explanation:

The mean length of imprisonment for motor-vehicle theft offenders in this country is 22.1 months.

This means that the null hypothesis is that the mean is of 22.1 months, that is:

H_0: \mu = 22.1

A hypothesis test is to be performed to determine whether the mean length of imprisonment for motor-vehicle theft offenders in this city differs from the national mean of 22.1 months.

At the alternate hypothesis, we test if this mean is different of 22.1, that is:

H_a: \mu \neq 22.1

Which means that the answer is given by option b).

Which of the following is the correct classification of the hypothesis test?

We test if the mean is different from a value, which means that the hypothesis test is Two-tailed.

7 0
3 years ago
Jame bought 15 plain bagels and 9 raisin bagel .how many more plain bagels that raisin did he buy
Artyom0805 [142]
15 minus 9 is equal to 6 <span />
8 0
3 years ago
In a certain​ country, the true probability of a baby being a boy is 0.514. among the next nine randomly selected births in the​
Vadim26 [7]

The probability of a baby being a boy is 0.514.

Nine baby births are selected and we have to find the probability that at last one of them is a girl.

P(At least one out of 9 is baby girl) = 1 - P(No baby girl)

= 1 - P(All 9 are baby boy)

= 1 - (0.514)^9

= 1 - 0.0025

= 0.9975

The probability that at least one out of 9 selected births is baby girl is 0.9975

3 0
4 years ago
How much money must be deposited to T
Contact [7]

Answer:

First, converting R percent to r a decimal

r = R/100 = 5.5%/100 = 0.055 per year.

Putting time into years for simplicity,

6 months / 12 months/year = 0.5 years.

Solving our equation:

A = 200(1 + (0.055 × 0.5)) = 205.5

A = $205.50

Step-by-step explanation:

6 0
4 years ago
Other questions:
  • The equation x2 − 9 = 0 has real solution(s).
    8·2 answers
  • Sara made pumpkin pies for a school fundraiser. She had 64 total pieces of pie to sell. By noon she had sold 25% of her pies. Ho
    10·2 answers
  • What is the area of this figure?
    9·2 answers
  • At a Psychology final exam, the scores are normally distributed with a mean 73 points and a standard deviation of 10.6 points. T
    10·1 answer
  • Please answer these 3 questions
    13·1 answer
  • Pls help meee lookat the screenshot
    10·2 answers
  • HELP ON MATH PLS ASAP HELP HELP HELP.
    8·2 answers
  • The temperature starts at 65°F on Thursday. It goes down 10°F and then it goes down 3°F. How much must the temperature rise to g
    13·2 answers
  • Can monkeys eat pee when in well that has wet stuff in a zoo with harambe
    15·1 answer
  • A function is a relation in which each element in the input is mapped to how many elements in the output?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!