Answer:
see below
Step-by-step explanation:
Put -1 where x is in each expression and evaluate it.
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You will find that the expression is zero when the numerator is zero. And you will find the numerator is zero when it has a factor that is equivalent to ...
(x +1)
Substituting x=-1 into this factor makes it be ...
(-1 +1) = 0
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Evaluating the first expression, we have ...
This first expression is one you want to "check."
You can see that the reason the expression is zero is that x+1 has a sum of zero. You can look for that same sum in the other expressions. (The tricky one is the one with the factor (x -(-1)). You know, of course, that -(-1) = +1.)
Answer:
8.32 m/s^2
Step-by-step explanation:
Hope this helps it.
3/2 / 1/4 = 3/2 * 4/1
3*4= 12
2*1= 1
n= 12/1 or 12
Hope this helps!
Answer: Not safe
Step-by-step explanation:
Let the angle of elevation of the ramp be θ, then:
But the maximum angle for the ramp cannot exceed 7.1°. The calculated angle of elevation will make it difficult, if not impossible, for motorized wheelchairs to get up the ramp.
Therefore, the ramp at the local library is not safe for motorized wheelchairs
Answer:
Math expression= L[m]= W[g] / R[g/m]
answer=4.606Km
Step-by-step explanation:
It is known that the cable weighs 44kg / km therefore if the weight is divided by this amount we can find how much cable length was spent
L=W/R
L= leght of wire used(m)
W=weight used(g)=205g
R= relation between weight and leght(g/m)=44.5g/km=0.0445g/m
L=205g/0.0445g/m= 4606.74m= 4.606Km
