MATHEMATICS HIGH SCHOOL

Which pair of numbers is relatively prime? A.
18 and 45

B.
26 and 91

C.
10 and 33

D.
14 and 63

Answers

Answer 1
Answer: The answer is C)

The numbers are relatively prime if there is no common factor that divides both of them apart from 1.  A) isn't answer because 3 is one of common factors. B isn't answer because 13 is common factor. and D isn't answer because 7 is common factor.

Therefore only 10 and 31 have no common factors other than 1

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If there are no apples on the bush and one skis off onto the earth how many fruits are left to be drinken by the humans?

Answers

None, we don't drink fruits, we eat them.

CANT GET WRONG PLZ HELPSimplify
1 + {2x - 3(1.8 divided by 0.2)}

a. 2x - 26
b. 2x + 28
c. 3x - 27
d. -7x + 1

Answers

Work is attached. 

:D

I had to write twenty characters.

A culture is grown with a population of 45 million cells. The cell population is found to double every hour. What will the population be after four hours?

Answers

45 million * 2^(4) = 45million * 16 = 720million

Or you can use 
y=Ae^(kt)
A is equal to 45 million
To find the rate, k, we can plug in:
90million=45million*e^(k*1)
2=e^(k)
k=ln(2)
y=4.5*10^(7)*e^(t *ln2)
Knowing that t = 4
y = 4.5*10^(7)*e^(ln(2)*4)
y = 720 million
The population will be 360 million people after four hours

C=5(y-8) solve for y

Answers

Answer:

The steps to do this :

c = 5(y - 8)

c = 5y - 40

c + 40 = 5y

y = (c + 40)/(5)
steps:
1. distribute 5 to y and 8 so you get c= 5y-40
2. subtract 40 over (c-40=5y)
3. finally divide by 5, getting you c-8=y :))

The perimeter of a rectangle is 68 ft. Find the dimensions of the rectangle if the ratio of the length to the width is 9 : 8. Which of the following would be the best equation to use to solve this problem?

Answers

the perimeter of a rectangle is 

P = 2w +2l
P = 68 ft

and given the ratio l/w = 9/8 from this result 8l = 9w so l = (9w)/8

P = 2w +2l

68 = 2w +2((9w)/8)

68 = 2w +9w/4

4*68 = 8w +9w

272 = 17w

w = 272/17

w = 16 

so than we know that w=16 so than the length will be 

l = (9w)/8

l = 9*16/8

l = 9*2

l = 18

so than we know that 

l = 18
w = 16

Divide 3.7÷0.006 round the answer the nearest hundredth?

Answers

First divide 3.7 by 0.006
Which is 616.666
The last 6 is the thousandths place. If it is 5 or bigger then the number to the left is rounded up. If its lower than 5 you round down

Since 6 is over 5 we tound up
616.67
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