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mart [117]
3 years ago
8

Find 30% of 70 whats your right one

Mathematics
2 answers:
qwelly [4]3 years ago
3 0

Answer:

21

Step-by-step explanation:

I hope this helps!

Orlov [11]3 years ago
3 0
30% of 70 = 21 so the answer is 21
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. The formula for the area A of a trapezoid is
cupoosta [38]

Answer:

h=A/(b1+b2/2)

Step-by-step explanation:

it is the reverse

8 0
3 years ago
Sam is selling homemade cookies to raise money for charity. Each cookie sells for $.50. Sam spent $90 on baking supplies and eac
Hunter-Best [27]

9514 1404 393

Answer:

  360

Step-by-step explanation:

Sam obtains a "contribution margin" of $0.50 -0.25 = $0.25 per cookie. That will cover the cost of baking supplies when he sells ...

  $90 / ($0.25/cookie) = 360 cookies

Sam needs to sell 360 cookies before he can start making a profit.

_____

If you like, you can find Sam's break-even point by equating revenue and cost. The is the number of cookies Sam must sell for a profit of 0, that is, for non-negative profit.

  P = R - C

  0 = R - C

  R = C

  0.50n = 90 +0.25n

  0.25n = 90 . . . . subtract 0.25n

  n = 90/0.25 = 360 . . . .divide by the coefficient of n

You may notice this is similar to our description above.

3 0
3 years ago
Sixteen is divided by the sum of a number q and 1
atroni [7]

No context. If you want us to write an expression:

16 / (q+1)

4 0
3 years ago
Yan has already finished 3/5 of the 45 math problems he was assigned today. Each math problem took him 1 4/5 of a minute to comp
kobusy [5.1K]

Answer:

He will finish the rest of the problems in 32.4 minutes.

Step-by-step explanation:

Since we are given that Yan has completed 3/5 of 45 problems i.e.

\frac{3}{5}*45

27

Thus he has completed 27 problems

Remaining no. of problems are 45-27 = 18

Since he complete each problem in minutes = 1\frac{4}{5} =\frac{9}{5} =1.8

So, he completes 18 problems in minutes = 18 *1.8 = 32.4 minutes

Hence , He will finish the rest of the problems in 32.4 minutes.


3 0
3 years ago
Coty painted a right triangle on paper. The hypotenuse of his triangle is 18 inches and one of the legs is 7 inches. What is the
padilas [110]

Answer:

G) 16.6

Step-by-step explanation:

We can use the pythagoriam theroem to solve the problem

a^{2} + b^{2} = c^{2}

a^{2} + 7^{2} = 18^{2}

a^{2} + 49 = 324

a^{2} = 275

a = 16.6

3 0
3 years ago
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