Length is 380 miles with is 280 miles what is the area

Answers

Answer 1

Answer: Area is length x width

So multiply 380 x 280 = 106,400 would be the answer.

Answer 2

Answer: area = 380*280=106,400

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PLEASE HELP ASAP !!!!!!!!!!!!!!!!!!!!!

One twelfth of the circle is 30 degrees. how many radians is one twelfth of the circle

Answers

$30^o=(30)/(180)\pi\ rad=(1)/(6)\pi\ rad=(\pi)/(6)\ rad$

a circle has a total of 2π radians, so 1/12 of that is 2π/12, or π/6 radians

Walt made an extra $7000 last year from a part-time job. He invested part of the money at 3% and the rest at 3.25%. He made a total of $220.00 in interest. How much was invested at 3.25%?A $4000

B $3000

C $5000

D $3500

Answers

Answer: A $4000

Step-by-step explanation:

Let x represent the amount which he invested at 3% interest.

Let y represent the amount which he invested at 3.25% interest.

Walt made an extra $7000 last year from a part-time job. He invested part of the money at 3% and the rest at 3.25%. This means that

x + y = 7000

The formula for determining simple interest is expressed as

I = PRT/100

Considering the account paying 3% interest,

P = $x

T = 1 year

R = 3℅

I = (x × 3 × 1)/100 = 0.03x

Considering the account paying 3.25% interest,

P = $y

T = 1 year

R = 3.25℅

I = (y × 3.25 × 1)/100 = 0.0325y

He made a total of $220.00 in interest., it means that

0.03x + 0.0325y = 220 - - - - - - - -- -1

Substituting x = 7000 - y into equation 1, it becomes

0.03(7000- y) + 0.0325y = 220

210 - 0.03y + 0.0325y = 220

- 0.03y + 0.0325y = 220 - 210

0.0025y = 10

y = 10/0.0025

y = 4000

How many whole numbers are between 0 and n+7? (n is a whole number)

Answers

Answer:

There are n + 7 whole numbers

Step-by-step explanation:

Here, we want to calculate the number of whole numbers between 0 and n + 7

Since n + 7 is a while number, what we shall do is to simply subtract 0 from it

Thus we have; n + 7 - 0 = n + 7

So there are n + 7 whole numbers between n+ 7 and 0

Answer:

n+7

Step-by-step explanation:

n+7-0=n+7?

when a number is added to 1/5 of itself the result is 24. the equatation that models this problem is n + 1/5 n equals 24. what is the value n

Answers

If you convert it to decimals you get 1.2n= 24.
Divide both sides by 1.2.

The answer is n=20.

It is N = 20 sure of it

Santos walks 2 kilometers south and then a certain number of kilometers east. He ends 5 kilometers away from his starting position.How many kilometers east did Santos walk?

Answers

Answer:

4.6 Or 4.60

Step-by-step explanation:

Like the other person said, 4.56. The question says "round to the nearest tenth" so 4.56 rounds to 4.60

Hope it helps~

(2√5 + 3√7)^2 show your work and justify each step.

Thank you!

Answers

$(2 √(5) + 3 √(7) )^2 \n \n (2 √(5) ) ^2 + 2 * 2 √(5) * 3 √(7) + (3 √(7) ^2 \n \n 2^2 √(5) ^2 + 2 * 2 √(5) * 3 √(7) + (3 √(7) )^2 \n \n 4 √(5) ^2 + 2 * 2 √(5) * 3 √(7) + (3 √(7) )^2 \n \n 4 * 5 + 2 * 2 √(5) * 3 √(7) + (3 √(7) )^2 \n \n 4 * 5 + 2 * 2 √(5) * 3 √(7) + 3^2 √(7) ^2 \n \n 4 * 5 + 2 * 2 √(5) * 3 √(7) + 9 √(7) ^2\n \n 4 * 5 + 2 * 2 √(5) * 3 √(7) + 9 * 7 \n \n 20 + 2 * 2 √(5) * 3 √(7) + 9 * 7 \n \n 20 + 2 * 2 * 3 √(5 * 7) + 9 * 7 \n \n 20 + 2 * 2 * 3 √(35) + 9 * 7 \n \n 20 + 12 √(35) + 9 * 7 \n \n 20 + 12 √(35) + 63 \n \n 83 + 12 √(35) \n \n$

The answer is: 83 + 12√35.

(2√(5) + 3√(7))²
(2√(5) + 3√(7))(2√(5) + 3√(7))
2√(5)(2√(5) + 3√(7)) + 3√(7)(2√(5) + 3√(7))
2√(5)(2√(5)) + 2√(5)(3√(7)) + 3√(7)(2√(5)) + 3√(7)(3√(7))
4√(25) + 6√(35) + 6√(35) + 9√(49)
4(5) + 12√(35) + 9(7)
20 + 12√(35) + 63
20 + 63 + 12√(35)
83 + 12√(35)

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