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Reika [66]
3 years ago
12

Evaluate the function at the given value of the independent variable. Simplify the results. (If an answer is undefined, enter UN

DEFINED.) f(x) = x3 − 49 x f(x) − f(7) x − 7 =
Mathematics
1 answer:
Eduardwww [97]3 years ago
5 0

Answer: Undefined maybe

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A railway engine starts shunting wagons by first going 1000m north of railway station. It reverses and travels 1250m and then it
Ainat [17]

Answer:

450m South

Step-by-step explanation:

Total distance traveled Northward :

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Total distance traveled Southward :

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The Displacement :

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= 450m

Since, it covers more distance towards the south, then, direction is southward

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A baby gains about 2 1/5 pounds each month for the first three months after birth.when he was 3 months old,tyler weighed 14 1/10
lyudmila [28]
I believe the answer is 6 9/22.
6 0
3 years ago
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A rectangular plot of ground is 30 meters longer than it is wide. its area is 10,000 square meters.
dimulka [17.4K]
A = W· L
10,000 = W ( W +30 ) = W² + 30 W
W² + 30 W - 10,000 = 0
W = \frac{-30+ \sqrt{900+40000} }{2}=  \frac{-30+202.24}{2} = 86.12
L = 86.12 + 30 = 116.12
Width of a plot is 86.12 m and lenght is 116.12 m.
Check : A = 116.12 · 86.12 ≈ 10,000
6 0
3 years ago
3. 40% of x is 35. Write an equation. Then use your equation to find x.​
MrRissso [65]

Answer: x =  87.5

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2 years ago
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Sandy bought a soft drink for 4 dollars and 9 candy bars. She spent
almond37 [142]
9c + 4 = 49

The numbers by themselves represent the amount of dollars spent (4 and 49), but since you don’t know the amount of money each candy bar cost, you would put the amount of candy bars and a variable next to it to then solve ($5 per bar)
5 0
3 years ago
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