Answer:
B. 20 meters per second
Step-by-step explanation:
The car is going 400 meters in 20 seconds, let's simplify that!
STEP 1
400/20=20
( / stands for division)
For an easier understanding way, here:
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STEP 2
Now, to understand a bit better, the 400 gets divided into 20 by 20 times, and the 20 gets divided into 20 1 time. So, there fore.....
FINAL ANSWER:
We get the answer that if a car is moving 400 meters per 20 seconds, that means it is moving 20 meters per one second.
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Answer:
a = 21
Step-by-step explanation:
If x = h is a zero of a polynomial then f(h) = 0, thus
p(- ) = 27( -
)³ - a(-
) - (-
) + 3 = 0, that is
27 (- ) -
a +
+ 3 = 0
- 1 - a +
= 0 ( multiply through by 9 to clear the fractions )
- 9 - a + 30 = 0
- a + 21 = 0 ( subtract 21 from both sides )
- a = - 21 ( multiply both sides by - 1 )
a = 21