Answer:
Step-by-step explanation:
As long as the runner does not change direction, the velocity would be
Formula
d = r*t
r = d/t
Solution
r = 400 m / 56 s
r = 7.14 m/s
Answer:
The correct answer , velocity = 7.14 m/s
Step-by-step explanation:
Formula:
Velocity = Distance/Time
The common units are km/hr and m/s
It is given that, a runner that complete 400 meters in 56 seconds
From the given information we get,
Distance = 400 m and time = 56 s
To find the velocity
Velocity = Distance/Time = 400/56 = 7.14 m/s
Therefore the correct answer , velocity = 7.14 m/s
Answer:
-4x² + 10x + 4
Step-by-step explanation:
(-4x² + 3x - 5) - (-7x - 9)
-4x² + (3x - -7x) + (-5 - -9)
-4x² + (3x + 7x) + (-5 + 9)
-4x² + 10x + 4
To subtract – 7x – 9 from - 4x² + 3x – 5, we change the signs of all the terms in the second expression and then combine like terms. The final answer is -4x² + 10x + 4.
To subtract – 7x – 9 from - 4x² + 3x – 5, you simply replace the minus sign before the second expression (– 7x – 9) with a plus sign, and then change the signs of all the terms in that expression. This is analogous to the subtraction of scalars, where for example, 5–2 equals 5+(-2).
Thus, the expression becomes: -4x² + 3x - 5 + 7x + 9. Now, you simply combine like terms. The 3x and 7x can be combined to get 10x, and -5 and 9 can be combined to get 4. The final answer is -4x² + 10x + 4.
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Steps:
Group like terms:
8p - 3 + 9p + 6p + 2p - 6p - 3p - 9p-3
Add similar elements:
8p - 3 + 9p + 6p + 2p - 6p - 3p - 9p = 7p
=7p−3
Answer: =7p−3
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Answer:
7p-3
Step-by-step explanation:
We are given the expression:
8p - 3 + 9p + 6p + 2p - 6p - 3p - 9p
To simplify, we can combine like terms. Add all the terms with a variable, then add the terms without a variable.
(8p + 9p + 6p + 2p - 6p - 3p - 9p)+ -3
(25p -18p) -3
7p-3