278 times 10=2780
2781 minus 2781=1
thus, he used 1 ones block
-t(5t - 7) = -5
-1 -1
t(5t - 7) = 5
t(5t) - t(7) = 5
5t² - 7t = 5
5t² - 7t - 5 = 0
t = -(-7) ± √(-7)² - 4(5)(-5)
2(5)
t = 7 ± √49 - 4(-25)
10
t = 7 ± √49 + 100
10
t = 7 ± √149
10
t = 0.7 ± 0.1√149
Answer:
74 feet per second
Step-by-step explanation:
Divide 1,110 by 15 to get 74, which is how many feet the antelope ran per second in its short burst.
Hope this helps!
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