1. The fossil record includes all of the fossils discovered on Earth. How are the fossils in the fossil record organized?
A. By size (ex: largest to smallest)
B. By age (ex: oldest to youngest)
C. By color (ex: brown together, green together)
D. By shape (ex: round together, square together)
B. By age (ex: oldest to youngest)
in need help with math
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(−1)(−16)(13) =
Responses
A 208208
B −208−208
C 198198
D −198
(-1)(-16)(13) = 208
So the answer is A. 208
Of these integers, -65, -42, 65, and 90, which two are farthest apart on the number line?
Responses
A -42 and 90-42 and 90
B -65 and 90-65 and 90
C -42 and 65-42 and 65
D -65 and 65-65 and 65
E -65 and -42-65 and -42
The two integers that are farthest apart on the number line are the ones that have the greatest distance between them.
The distance between -65 and 90 is 90 - (-65) = 155.
The distance between -42 and 65 is 65 - (-42) = 107.
The distance between 65 and 90 is 90 - 65 = 25.
The distance between -65 and -42 is -42 - (-65) = 23.
The greatest distance is between -65 and 90, so the answer is B. -65 and 90.
-35 − (-12) =
Responses
A 2323
B 4747
C -23-23
D -47
When we subtract a negative number, it is the same as adding its opposite. So,
-35 - (-12) = -35 + 12
= -23
Therefore, the answer is C. -23.
Oliver was drawing and replacing balls out of a bag. He first drew 3 balls, replaced 2 of them, drew out 4 more balls and replaced 1. How many balls did he have left in his hand?
Responses
A 1010
B -10-10
C -4-4
D 44