So,
1/4(3c + 5) + -1/2(2c + 3) = 1/2
First, we distribute to get rid of the parentheses. (PEMDAS)
3/4c + 1 1/4 - c - 1 1/2 = 1/2
Now, we collect like terms.
-1/4c - 1/4 = 1/2
Add 1/4 to both sides.
-1/4c = 3/4
Now, multiply by the reciprocal (-4/1).
c = -3
Check your answer.
1/4(3[-3] + 5) + -1/2(2[-3] + 3) = 1/2
1/4(-9 + 5) + -1/2(-6 + 3) = 1/2
-2 1/4 + 1 1/4 + 3 - 1 1/2 = 1/2
-1 + 1 1/12 = 1/2
1/2 = 1/2
2) The answer is all squares are rectangles.
3) Not all parallelograms are rectangles.
Answer:
54.5 is what I got
Step-by-step explanation:
Answer:
1520 yards
Step-by-step explanation:
Explanation:
Remember that
1
mile is
1760
yards, so
2
miles is
1760
⋅
2
, or
3520
yards.
If she has walked the track
5
times, then the total distance she has walked is
400
⋅
5
, or
2000
yards.
Do
3520 yards (
2 miles) minus
2000
yards, the distance Keisha has already walked.
3520 − 2000 = 1520
21 - 16.75 is 4.25. Do the problem on a calculator and you'll get it.