Answer:
A
Step-by-step explanation:
Hope this helps
can you go to my profile and help me with my recent one. plzssss
9 - (10d) = 11
Add 9 to both sides.
10d = 20
Divide both sides by 10.
d = 2
The answer is d = 2.
Two angles are complementary if the sum of their angles equals 90o.
If one angle is known, its complementary angle can be found by subtracting the measure of its angle from 90o.
Two angles are supplementary if the sum of their angles equals 180o.
If one angle is known, its supplementary angle can be found by subtracting the measure of its angle from 180o.
Answer:
Peter should join <u>Lab thinkers</u> to receive a better deal.
Science buddies costs <u>190$</u> for six months.
Lab thinkers costs <u>170$</u> for six months.
Step-by-step explanation:
The equations are...
Science buddies: 10+30x -> 10+30(6)=190
Lab thinkers: 45+25x -> 45+25(6)=170
Peter saves 20$ if he chooses lab thinkers.
Sorry for my mistake, this is my new edit.
Answer:
x = 100 units
Step-by-step explanation:
C = 2.5x^2 + 75x + 25000
To find average cost per unit, divide C by x:
C/x or Average cost (AC) per unit = = 2.5x + 75 + 25000/x ⇔ 2.5x + 75 + 25000x^-1 (equation 1)
To find cost minimising, we use differentiation (differentiate equation 1 in respect to x and set it equal to 0):
d(AC)/dx = 0
d(AC)/dx ⇔ 2.5 - 25000x^-2 = 0
2.5 = 25000x^-2
2.5 =
2.5x^2 = 25000
x^2 = 10000
x =
x = 100 units