Answer:
A
Step-by-step explanation:
The gym membership is going to cost 40 initially plus 22.50 for each month after.
The total cost for the gym can be expressed as 40+22.50m
The martial arts class is going to cost 26 initially plus 16 for each month after.
The total cost for the martial arts class can be expressed as 26+16m
Now we have to combine these to get the total cost for both the gym and the martial arts class:
(40+22.50m) + (26+16m) = 66 + 38.50m (option A)
Answer: n =8
Step-by-step explanation:
So 9 more than 3 times a number, would be:
9+(3x)=-6
then you would solve
subtract 9 from 9 and 9 from -6
you get 3x=-15
divide by 3 on both sides
x=-5
your welcome!!!! :)
Answer:
8a : No because only the boys have a say and girls are part of the school to
8b: The question is random because it just asks it would be biased if it said what is your favorite sport fun basketball of boring soccer because it uses adjectives.
Hope this helps I just learned about it last year
Step-by-step explanation:
Answer:
) See annex
b) See annex
x = 0,5 ft
y = 2 ft and
V = 2 ft³
Step-by-step explanation: See annex
c) V = y*y*x
d-1) y = 3 - 2x
d-2) V = (3-2x)* ( 3-2x)* x ⇒ V = (3-2x)²*x
V(x) =( 9 + 4x² - 12x )*x ⇒ V(x) = 9x + 4x³ - 12x²
Taking derivatives
V¨(x) = 9 + 12x² - 24x
V¨(x) = 0 ⇒ 12x² -24x +9 = 0 ⇒ 4x² - 8x + 3 = 0
Solving for x (second degree equation)
x =[ -b ± √b²- 4ac ] / 2a
we get x₁ = 1,5 and x₂ = 0,5
We look at y = 3 - 2x and see that the value x₂ is the only valid root
then
x = 0,5 ft
y = 2 ft and
V = 0,5*2*2
V = 2 ft³
