The friend would be incorrect. The antelope running 60 feet per second will be safe if the cheetah running at 90 feet per second is 650 feet behind it. To prove this, we can calculate the time it takes for the cheetah to reach the initial position of the antelope which is 650 ft from its initial position. We do as follows:
time to reach 650 ft = 650 ft / 90 ft/s = 7.22 s
After 7.22 s, the antelope would be,
distance of the antelope = 60 ft /s (7.22 s) = 433.33 ft
It would be 433.33 ft away from its initial position. So, the cheetah would not be able to reach the antelope when it travels 650 ft.
77. 0.205 < 0.21
It's less by 0.005
78. 0.1 = 0.1000
The extra zeroes do not change the solution.
79. -0.04 > -0.050
While this might look greater, remember to check the number line position
80. -1.03 < -0.03
Same as the last one.
81.

< 0.6

= 0.5 < 0.6
82. -

< -0.03
Same process as 80 mixed with 81.
I hope that these help.
Answer:
3x + 7
Step-by-step explanation:
Required algebraic expression will be: 3x + 7
Answer:
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Greeting to you! My name is Cecille and I’m here to answer that question
For more explanation, please see the attachment