Four Friends Collecting money to buy Dog Food:
Food Cost $150.00
Each Friend Collect the Same amount of Money: $37.50 each Collected
Just Divide:
$150.00 Divide amongst the 4 friends:
150.00/4
150/4 = 75/2
Answer ======> Decimal: $37.50 Each friend would need to collect to reach their goals.
Check:
$37.50 * 4
$150.00
150/4 =====> $37.50
Hope that helps!!!!!!!!! : )
Hope that helps!!! : )
The cost of my me knife is $5.52
cot x = cos x / sin x
cot x = .85 / .52 = 1.6346
answer:
d: 30
all angles in a triangle have a sum of 180 degrees. Just add 50 and 100 (so 150) and do 180-150=30.
Answer:
Solutions are 2, -1 + 0.5 sqrt10 i and -1 - 0.5 sqrt10 i
or 2, -1 + 1.58 i and -1 - 1.58i
(where the last 2 are equal to nearest hundredth).
Step-by-step explanation:
The real solution is x = 2:-
x^3 - 8 = 0
x^3 = 8
x = cube root of 8 = 2
Note that a cubic equation must have a total of 3 roots ( real and complex in this case). We can find the 2 complex roots by using the following identity:-
a^3 - b^3 = (a - b)(a^2 + ab + b^2).
Here a = x and b = 2 so we have
(x - 2)(x^2 + 2x + 4) = 0
To find the complex roots we solve x^2 + 2x + 4 = 0:-
Using the quadratic formula x = [-2 +/- sqrt(2^2 - 4*1*4)] / 2
= -1 +/- (sqrt( -10)) / 2
= -1 + 0.5 sqrt10 i and -1 - 0.5 sqrt10 i
