Can someone help me solve the equation below???
0=-4.9t²+7t+1000
2007-06-04 08:57:45 · 5 answers · asked by ishida m 1 in Education & Reference ➔ Homework Help
-4.9t²+7t+1000 = 0
Multiply thru by -1
4.9t ²- 7t - 1000 = 0
Use the quadratic equation to solve
x = (-b ± √(b² - 4ac))/2a
x = (7 ± √(49 + 19600))/9.8
x ≈ -13.59, x ≈ 15.02
Probably the positive result you are seeking.
.
2007-06-04 09:05:22 · answer #1 · answered by Robert L 7 · 0⤊ 0⤋
Use the quadratic formula:
x=(-b +/- sqrt(b^2-4ac)) / 2a
t = -7 +/- sqrt(7^2 - 4(-4.9)(1000)) / 2(-4.9)
t = 15.018 or -13.589
If t stands for time, then the answer most likely is the positive result of 15.018.
2007-06-04 16:03:59 · answer #2 · answered by yeeeehaw 5 · 0⤊ 0⤋
all the letters are 0
2007-06-04 16:00:34 · answer #3 · answered by Anonymous · 0⤊ 1⤋
x(476.19+1.t==0)
2007-06-04 16:35:55 · answer #4 · answered by Jeniv the Brit 7 · 0⤊ 1⤋
hahaha tht funny..im the worst at math..nd i h8 it with a passion!
2007-06-04 16:00:44 · answer #5 · answered by Anonymous · 0⤊ 1⤋