Mr. Santos plants beans and squash in the areas shown in the model below.Beans:
Squash:
21 acres
12 acres
Which expression is equivalent to the sum of the two areas?
3/4 + 7) acres
7(3+4) acres
4(3+ 7) acres
3(3+ 7) acres
Plz answer!

Answers

Answer 1
Answer:

Answer:

it is A hope this helps

Step-by-step explanation:

I just took the test

Answer 2
Answer:

Answer: its a

Step-by-step explanation:

itook the test          


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Kevin has 65 feet of fencing. He wants to use all the fencing to create a rectangular fence around his pool. The equation 2L + 2W = 65, where l is the length of the fence and w is the width. If Kevin makes the length of the fence 13 feet long, how wide should he make it?

Answers

19.5 feet long because it’s says 2L so the length he puts it at is 13 feet so you times that by 2 and get 26. Then take 65 minus 26 and you get 39, then take 39 divided by 2 and get 19.5 I think that’s the answer that’s what I would do

What sample size, including the 20 observations in the initial study, would be necessary to have a confidence of 95.44 percent that the observed time was within 4 percent of the true value?

Answers

Completed question:

An initial time study resulted in an average observed time of 2.2 minutes per cycle, and a standard deviation of .3 minutes per cycle. The performance rating was 1.20. What sample size, including the 20 observations in the initial study, would be necessary to have a confidence of 95.44 percent that the observed time was within 4 percent of the true value?

Answer:

47

Step-by-step explanation:

When doing a statistic study, a sample of the total amount must be taken. This sample must be done randomly, and, to be successful, the sample size (n) must be determined, by:

n = ((Z_(\alpha/2)*S )/(E))^2

Where Z(α/2) is the value of the standard normal variable associated with the confidence, S is the standard deviation, and E is the precision. The confidence indicates if the study would have the same result if it would be done several times. For a confidence of 95.44, Z(α/2) = 2.

The standard deviation indicates how much of the products deviate from the ideal value, and the precision indicates how much the result can deviate from the ideal. So, if it may vary 4% of the true value (2.2), thus E = 0.04*2.2 = 0.088.

n = [(2*0.3)/0.088]²

n = 46.48

n = 47 observations.

(c) In how many way we can list the digits{1,1,2,2,3,4,5}so that notwo identical digit are in consecutive positions?

Answers

Answer:

660 ways

Step-by-step explanation:

we have two numbers in consecutive positions in this question

(1,1) and (2,2)

numbers of ways that (1,1) are in consecutive positions = 6!/2! = 360

number of ways that (2,2) are in consecutive positions = 6!/2! = 360

the permutation of (11),(22),3,4,5 = 5!

ps:I countedthepairsasoneeach.

5! = 120

to get total number of permutations

7!/2!2!

= 5040/4

= 1260

the number of ways that 2 identical digits are not consecutively positioned = 1260-360-360+120

= 660 ways

What is decimal representation of 27/100

Answers

0.27 is the decimal representation of 27/100.
.27 or divide 27/100 and you get the same answer

Please help ALGEBRA II

Answers

The answer is a I know this because I took the test

During a game of cards, Megan divided the deck of cards into 4 equal groups. She then placed (3 ofher cards in the center of the table. If Megan now has
5 cards in her hand, how many cards were in the
entire deck?

Answers

There were originally 3 cards in the entire deck.

Let's denote the number of cards in the entire deck as \(D\).

Megan divided the deck into 4 equal groups, so each group has \((D)/(4)\) cards.

She placed 3 cards in the center, and now she has 5 cards in her hand.

So, the equation representing this situation is:

\[(D)/(4) - 3 + 5 = D\]

Now, let's solve for \(D\):

\[(D)/(4) + 2 = D\]

Multiply both sides by 4 to get rid of the fraction:

\[D + 8 = 4D\]

Subtract \(D\) from both sides:

\[8 = 3D\]

Divide both sides by 3:

\[D = (8)/(3)\]

However, the number of cards in a deck must be a whole number, so we round up:

\[D = 3\]

Therefore, there were originally 3 cards in the entire deck.

Answer: 32

Step-by-step explanation:  If she had 8 in her had and placed 3 cards down she would have 5 and if there were 8 cards in each group then, 8x4=32