What is a good comparison of the estimated sum and the actual sum of 7 9/12+2 11/12

Answers

Answer 1

Answer: 10 8/12 because you get an improper fraction when you add 9/12 and 11/12 (20/12) so you see how many times 12 goes into 20 which is only once. you see how many are left over from when you take 12 from 20. then you have you fraction which is 8/12. now you have to add the numbers which is 7+2=9 but 12 goes into 20 once so you add 1 to your number to make it 10. That's the answer, 10 8/12.

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PLZ HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! If f(x) = 3x2 - 2x + 5, find f(-2).

Answers

Hello from MrBillDoesMath!

Answer:

Discussion:

f(x) = 3x2 - 2x + 5

Substitute x = -2 in f(x) above to get

f(-2) =

3 (-2)^2 - 2(-2) + 5 = => (-2)^2 = (-2) * (-2) = +4, -2(-2) + + 4

3*4 + 4 + 5 =

12 + 4 + 5 =

Thank you,

MrB

The answer is 21. hope this helps!

Use the substitution method to solve the system of equations. Then check your solution. 1.) b=-4a+5
a-b=5

2.) 6x-y=-15
x+2y=17

3.) x=10
y=2x-6

4.) n=-7m-4
14m+2n=-8

Answers

1. a=2 b=-3
2.
3.x=10 y=14
4.
I'll do the rest in 5 mins

Which of the following is not true about genes?They are passed down from your ancestors.

They contain instructions for your physiology and behavior.

Some people are born with an entirely new set of genes not seen in their parents.

Some parts of your genes can become different from your parents as you are forming.

Answers

The answer is C. Some people are born with an entirely new set of genes not seen in their parents. (This one is not true because we do see genes inherited/seen from our parents. For example, if our parents have brown eyes, we can have brown eyes, or same thing with hair, if our parents have brown hair, we can inherit/ be seen having brown hair just like them, we inherit genes similar to our parents because they made us, in turn, they gave us some of their features and genes.)

N/2= 1 3/4 Can you please help me find n?