Estimate 459 + 335 + 1,467 by first rounding each number to the nearest hundred.
2 answers:
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Answer:
B is 6.
Step-by-step explanation:
We are trying to find a value for such that:
is true for every
.
So let's choose :
Divide both sides by -8:
Note: I didn't want to choose y to be 0 because the value of B would disappear from the equation. So you should be able to have chosen any x and y except for y=0 to solve the equation for B.
Check:
So let's check and use foil to multiply out the right hand side.
There was a 2 in front of that multplicapltiation:
This is exactly what we have on the left hand side of your given equation.
7 is the missing numerator in the equivalent fraction with a denominator of 2.
<u>Step-by-step explanation</u>:
The mixed fraction is 3 1/2.
- Convert it into a proper fraction to get a equivalent fraction.
- Multiply the denominator 2 with 3 and then add 1 to the answer.
⇒ 3 1/2 = ((32) + 1)/2
⇒ 3 1/2 =7/2
∴ The numerator of the equivalent fraction is 7.