The Area of a triangle is 1/2 base×height So 8×3/2=12
Here is your answer they forgot to add the 3 in front this is your answer: -3.7+-0.25=-3.95 so as I'm look they added wrong its most like the 25 and the 7 were added wrong.
Answer:
$131.25
Step-by-step explanation:
Take the $175 price and divide it by 0.25, which is the decimal version of 25%. You should get 43.25 which is 25% of 175. Then subtract 43.25 from 175 to get the final answer of $131.25 for the CD player if Martin buys it on Wednesday.
Hello from MrBillDoesMath!
Answer:
x = 4
x = ( -7 + sqrt(29)) /2
x = ( -7 - sqrt(29)) /2
Discussion:
x^3+3x^2-23x-20 factors as (x - 4) (x^2 + 7 x + 5) so x =4 is one root
The roots of the quadratic factor, x^2 + 7x + 5, can be found using the quadratic formula where a = 1, b = 7, and c = 5
x = ( -b +\- sqrt(b^2-4ac)) / 2a
x = ( -7 +\- sqrt( 7^2 - 4*1*5) ) / (2*1) =>
x = ( -7 +\- sqrt (49-20) ) / 2 =>
The "+" root: ( -7 + sqrt(29)) /2
The "-" root: ( -7 - sqrt(29)) /2
Regards,
MrB
P could equal +/- 1, +/- 2, +/- 11, +/-22
q could equal +/- 1, +/-2
so roots could be p/q = +/-1 , +/- 1/2 , +/- 2, +/- 11/2 , +/- 11, +/-22
That is the third choice.