The mistake the student made in the second procedure is she tried to solve 3.7+2.6 the same way she solved 4.3+8.4, which that way doesn't always work. You have to understand how decimals work when it comes to adding them. The right way to solve 3.7+2.6 and be sure you are accurate is to line the numbers up. Then add the numbers behind the decimal which is 7+6. That equals 13. So you would out your 3 and carry your 1 over to the number in front of the decimal. So 3+2=5, plus the additional one you had to carry. Your final answer would be 6.3
Answer:
Height=9/2=4.5
A=1/2*b*h
A=1/2*6*4.5
A=13.5
13.5*2=27
The area of the shaded region is 27.
Answer:
I think that it should be
Step-by-step explanation:
Here,
we take , a - b = A,b-c = B , c - a= C
A+B+C = 0
we know that,
Here , A+B+C = 0
so,
A^3 +B^3 + C^3 = 3 ABC
now we put the values
I am done .
Answer:
A.
A. Is reduced of the example above.
Answer:
2 5/7 5/7 -1/7, -5/7, 1 2/7, -2 2/7, -1 5/7
