Answer:
±sqrt( H *f•c)= L
Step-by-step explanation:
H=L^2/f•c
Multiply each side by fc
H *fc=L^2/f•c * fc
H *f•c=L^2
Take the square root of each side
±sqrt( H *f•c)= sqrt(L^2)
±sqrt( H *f•c)= L
17.99 with 20% off 17.99*(1-20%)=14.392
40/14.392=2.779
Have to bye 3 shirts to make it more than $40.
(3*17.99*(1-20%)-10)*(1+7.5%)=35.66
Need to by 3 shirts to use the coupon. The purchase is $35.66.
Answer:
she has to give him 4 dollars each week for 11 weeks since he already has 7 dollars.
Step-by-step explanation:
4 x 11 = 44 +7 = 51 so now he had enough for a skateboard.
Answer:
125°
Step-by-step explanation:
Supplementary angles sum to 180°
let one angle be x then the larger angle is x + 70, thus
x + x + 7 0 = 180
2x + 70 = 180 ( subtract 70 from both sides )
2x = 110 ( divide both sides by 2 )
x = 55
Hence
larger angle = x + 70 = 55 + 70 = 125°
