Mathematics, 20.10.2020 18:01 abilovessoftball
Andrew was making a science project for school. He worked for 6.6 hours the first week, 2.75 hours the second week, and 4.4 hours the third week.
Andrew used the following mental math strategy to find the total number of hours he worked on his project.
6
.
6
+
2
.
75
+
4
.
4
(
6
.
6
+
4
.
4
)
+
2
.
75
11
+
2
.
75
=
13
.
75
What is the reason for his strategy?
A.
It is easier to add decimals in a decreasing order than in a mixed order.
B.
6.6 and 4.4 are compatible numbers that are easy to add mentally.
C.
It is easier to add decimals with the same number of place values after the decimal point than adding decimals with different numbers of place values after the decimal point..
D.
Rounding removes the decimals and creates whole numbers.
Answers: 2
Mathematics, 21.06.2019 12:30, leximae7720
Suppose there are 10 five and six-year-old attending a birthday party. when a 30 year old mother walks into the room with an infant in her arms, what happens to the mean age in the room? what happens to the standard deviation of ages in the room? a. the mean and standard deviation of both change. b. the meaning will change, but the standard deviation will stay approximately the same. c. i mean will stay approximately the same, but the standard deviation will change. d. the mean and standard deviation will both stay approximately the same.
Answers: 1
Mathematics, 21.06.2019 20:00, nauticatyson9
If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.
Answers: 2
Andrew was making a science project for school. He worked for 6.6 hours the first week, 2.75 hours t...
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