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Alex17521 [72]
3 years ago
14

If a square has an area of 81 square how long is each side ?

Mathematics
1 answer:
Art [367]3 years ago
7 0
The area of a square is

       (length of a side) times (length of a side) .

So if you want to know the length of the side,
you have to find a number that gives you 81
when you multiply the number by itself.

That's called the "square root" of 81 .

Each side of your square is 9 units long.
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A person invests 10000 dollars in a bank. The bank pays 4.5% interest compounded
Greeley [361]

The person would have to leave the money in the bank for 7.8 years for it to reach 13,500 dollars.

Step-by-step explanation:

Step 1; First we must calculate how much interest is generated for a single year. The annual interest rate is 4.5% i.e. 4.5% of 10,000 dollars which equals 0.045 × 10,000 = 450 dollars a year. As the years pass, more and more will be put into the account due to interest.

Step 2; For there to be 13,500 dollars in the bank account we need to calculate how much money is added due to interest.

The money needed to be added through interest = 13,500 - 10,000 = 3,500 dollars.

So we need to determine how long it will take for the bank to add 3,500 dollars by adding 450 dollars a year.

The number of years to reach 13,500 dollars = \frac{3,500}{450} = 7.777 years. By rounding this value to the nearest tenth, we get 7.8 years.

7 0
2 years ago
Plz help!!! I’ll give 10 points to the first person to give me a correct answer...I need to get my grade up before the end of th
Lilit [14]

Answer:

A= 30

B= 60

C= 90

Step-by-step explanation:

A is already shown.

B has a right angle making it 90 degrees.

A triangle is 180 degrees 30+90= 120

180-120=60

3 0
2 years ago
please pa answer po.Barby has a small plot in the garden she planted 2/5 of it to radidhes and 1/4 to carrots.What part of the p
Gennadij [26K]

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5 0
2 years ago
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If Max makes 45 out of 60 shots with the basketball, how many would you expect him to make if he only shot the basketball 15 tim
exis [7]

Answer:

11

Step-by-step explanation:

Probability of Max making a shot is 45/60=¾

Here, probability, p=¾ or 0.75

The trials n=15

E=np where E is expectation

Now, when the shots out of 15 trials will be given by np=15*¾=11.25 shots

Rounded off to the nearest interger, this is approximately 11 shots.

Therefore, the possible number of shots in 15 trials for Max is equivalent to 11

7 0
3 years ago
What is the solution to the expression Negative 2 minus 3 minus (negative 4)? A number line going from negative 10 to positive 1
beks73 [17]

The solution of the expression is -1 ⇒ 3rd answer

Step-by-step explanation:

Let us revise some important rules on the number line

  • If we add number to another number we move to right
  • If we subtract a number from another number we move to left

∵ The expression is negative 2 minus 3 minus (negative 4)

∵ negative 2 = (-2)

∵ minus means (-)

(-2) minus 3 means move 3 units from (-2) to left, so you will pass -3, -4, and stop at -5

∴ (-2) - 3 = -5

∵ minus (negative 4) = - (-4)

- Remember (-)(-) = (+)

∴ minus (negative 4) = + 4

That means move 4 units to the right from -5, then you will pass -4, -3, -2, and stop at -1

∴ -5 + 4 = -1

∴ The expression (-2) - 3 - (-4) = -1

The solution of the expression is -1

Learn more:

You can learn more about the directed numbers in brainly.com/question/10364988

#LearnwithBrainly

5 0
3 years ago
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