What is the solution to y = 0.2x for the replacement set x = {3}?

Mathematics

1 answer:

Sonbull [250]3 years ago

4 0

.6 would be your answer. You just substitute in.

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Which expression is an irrational number? <br> A. 20 <br> B.(10^2)<br> C.144<br> D.0.48

tankabanditka [31]

Hello from MrBillDoesMath!

Answer: All numbers provided are rational

Discussion:

20 = 20/1 => rational

10^2 = 100 => rational

144 = 144/1 => rational

0.48 = 48/100 => rational

Thank you,

MrB

7 0

4 years ago

Two planes start flying towards each other simultaneously from two different cities. The distance between the cities is 960 mile

ANTONII [103]

Answer:

257.5 mph

332.5 mph

Step-by-step explanation:

The initial distance between the two planes is 960 miles, while the final distance (after t=1.5 h) is 75 miles, so the total distance covered by the two planes in 1.5h is

$d=960-75=885$ miles

Calling v1 and v2 the velocities of the two planes, we have the following equations:

(1) $v_1 = v_2 + 75$ --> velocity of plane 1 exceeds velocity of plane 2 by 75 mph

(2) $v_1 t+ v_2 t=885$ --> the total distance covered by the two planes is 885 miles (t=1.5 h is the time, and the products v1 t and v2 t represent the distance covered by each plane)