How do I find the calculated sum of 1/7 and 1/2

Answers

Answer 1

Answer: $(1)/(7)+(1)/(2)=(1 * 2)/(7 * 2)+(1 * 7)/(2 * 7)=(2)/(14)+(7)/(14)=(2+7)/(14)=\boxed{(9)/(14)}$

Answer 2

Answer: first make the denomenators (bottom numbers) the same

find the smallest number that 7 and 2 can both go into
the number is 14

multiply both by 1 or x/x where x is the same

1/7 times 1 or
1/7 times 2/2=2/14

1/2 times 1 or
1/2 times 7/7=7/14

sum of numbers
2/14+7/14
add numberators (top numbers)
2+7=9
answer=9/14

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Question 2 i need help on

What is bigger 7/8 or 13/15?

Answers

the answer would be 13/15

Add the following fractions.3/8 + 5/12 =

Answers

3/8 × 3/3 = 9/24 5/12 × 2/2 = 10/24 + 9/24 = 19/24

$(3)/(8) + (5)/(12) \n \n = (36 + 40)/(96) = (76)/(96) \n \n = 1.79167$

Can someone please help me fast

Answers

here,

15x+8=9x+26
15x-9x=26-8
6x=18
x=3

happy studying!

Your teacher puts numbers 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 and 12 in a hat and asks you to draw a number. what's the probability that you will draw either a 4 or a 6?

Answers

Total number of numbers = 12

Total number of 4 or 6 = 2

P( 4 or 6) = 2/12 = 1/6

Answer: 1/6

Answer:

1/6

Step-by-step explanation:

Total number of numbers = 12

Total number of 4 or 6 = 2

P( 4 or 6) = 2/12 = 1/6

Answer: 1/6

$800 is deposited in an account that pays 9% compounded semi-annually. Find the balance after 4 years.

Answers

The formula for compound interest is the following:

A=P(1+r/n)^nt
A=accumulated amount (what we're looking for)
P=Principal amount (initial amount). $800 in this case
r=rate. 0.09 in this case which we get from converting 9% to decimal by dividing by a 100.
n=number of times interest is compounded. In this case semi-annually which means 2
t=time. In this case 4 years
Let's calculate:
A=800(1+0.09/2)^(2*4)
A=800(1+0.045)^8
A=800(1.045)^8
A=800(1.42210061284)
A=1137.68049027
Let's round to the hundredth place (to represent cents) since the amount represents money.
Answer=The balance after 4 years will be $1,137.68

Answer:

Principal = $ 800

Time = 4 years

Rate of Interest = 9% compounded Semi Annually

$=(9\pr)/(2)$