Answer:
b = 57.6
Step-by-step explanation:
23 +3x +13 +2x=180
add the x's
5x
add the others
23+13=36
subtract 36 on both sides
36-36=0
180-36= 144
now get your 5x and divide by 5 on both sides
5/5 cancels out
144/5= 28.8
x= 28.8
now to find b
2·28.8= 57.6
to find 3x do the same
3 · 28.8 = 86.4
now double-check your answer by adding them all up and seeing if it = 180
57.6+86.4+36=180
Answer:
4.5 cups flour
Step-by-step explanation:
6.5 - 2 = 4.5
Answer:
I.4
ii.13
Step-by-step explanation:
....ur welcome........
To solve for this, we need to find for the value of x
when the 1st derivative of the equation is equal to zero (or at the
extrema point).
So what we have to do first is to derive the given
equation:
f (x) = x^2 + 4 x – 31
Taking the first derivative f’ (x):
f’ (x) = 2 x + 4
Setting f’ (x) = 0 and find for x:
2 x + 4 = 0
x = - 2
Therefore the value of a is:
a = f (-2)
a = (-2)^2 + 4 (-2) – 31
a = 4 – 8 – 31
a = - 35
