Answer: 15
Step-by-step explanation: To evaluate an expression, we plug the value of the variable into the expression and simplify.
Since we have 7 - 2x and x is -4, we have 7 - 2(-4).
Simplifying from here, 2(-4) is -8 so we have 7 - (-8).
Now, remember that a a minus sign followed by a
negative sign turns the two signs into a plus sign.
So 7 - (-8) can be thought of as 7 + (+8) which is 15.
Answer:
C
Step-by-step explanation:
We know 
is in between 
and 
Thus the dot has to be in between and
And it should be 
unit after
Observing all the number line , we see C is the absolute match!
Answer:
h = 2.25 m
Step-by-step explanation:
<u><em>Given:</em></u>
Speed = v = 12 ft/sec
Acceleration due to gravity = g = 32 ft/sec²
<u><em>Required:</em></u>
Height = h = ?
<u><em>Formula:</em></u>
v = 
<u><em>Solution:</em></u>
For h, the formula will be:
=> h = 
=> h = 
=> h = 
=> h = 2.25 m
Answer: 7/8
Step-by-step explanation:
You can change all the fractions to have equivalent denominators.
The Least Common Denominator of 1 1/4 and 3/8 is 8. Now we can change the fractions.
1 1/4 = 1 2/8 = 10/8.
3/8 = 3/8.
Now we can subtract. Subtract the numerators of the first fraction from the numerators of the second fraction, and the denominators oft he first fraction to the denominators of the second fraction.
10/8 - 3/8 = 7/8.
Therefore, 1 1/4 - 3/8 = 7/8; the fourth answer.
