Answer:
Choice C.
Step-by-step explanation:
For an expression to be equivalent you need to multiply or divide the 2 numbers in the original expression by the same number.
For example A is equivalent because both 125.78 and 1.23 have been multiplied by 100.
The odd one out is C because 125.78 has been divided by 100 but 1.23 has been multiplied by 10.
Answer:
50 is the old value and 23 is the new value. In this case we have a negative change (decrease) of -54 percent because the new value is smaller than the old value. Using this tool you can find the percent decrease for any value.
Answer:
b=-3
Step-by-step explanation:
4b+3=-9
-3 -3
subtract 3 from both sides like so. 3-3 cancels out. -9-3=-12.
4b=-12
youre left with 4b=12 so DIVIDE 4b by 4 and -12 by 4
4b/4=-12/4
4b divided by 4 is 1. -12 divided by 4 is -3
b=-3
plug -3 in for b to make sure its correct
4(-3)+3=-9
-12+3=-9
-9=-9
Answer: 10 m/s
Step-by-step explanation:
Given
Momentum of boy 
Mass of boy is 
Momentum is the product of mass and velocity
Substitute value
Thus, the boy is moving with a velocity of 10 m/s
