1. identify the abc... ax^2+bx+c
2. write down all the factor pairs of C
3. identify which factor pairs from the previous step sums up to letter B
4.subsitute factor pairs in 2 binomials :)
D.
36/16 sqrt = 6/4, since the square root applies to denominator and numerator.
Answer:
A. 140
Step-by-step explanation:
width times height times length
5·7·4=140
Answer:
$9.75
Step-by-step explanation:
A store is having a sale on walnuts and chocolate chips. For 3 pounds of walnuts and 5 pounds of chocolate chips, the total cost is $16. For 6 pounds of walnuts and 2 pounds of chocolate chips, the total cost is $22
. Find the cost for each pound of walnuts and each pound of chocolate chips.
***
let x=cost/lb of walnuts
let y=cost/lb of chocolate chips
..
3x+5y=16
6x+2y=22
..
6x+10y=32 (mult. eq by 2)
6x+2y=22
subtract:
8y=10
y=10/8=1.25
x=16-5y=9.75
cost/lb of walnuts=$1.25
cost/lb of chocolate chips=$9.75
Answer:
v = 3πr^2
- Step-by-step explanation:
v=1/3bh
v=1/3(πr^2)h [because the bases are equal and the base of a cone is circle]
v=1/3(πr^2)(3r) [because the height is 3 times the radius]
v=π3r^2 [1/3 and 3 cancel and we times 3r and r^2]
