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2 years ago

Evaluate the expression s=5 and t=7. 3st to the second power is what

Mathematics

1 answer:

bija089 [108]2 years ago

7 0

$s=5;\ t=7\\\\Subtitute\ the\ values\ of\ s\ and\ t\ to\ the\ expression\ 3st^2:\\\\3\cdot5\cdot7^2=15\cdot49=735$

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Vector u has a magnitude of 7 units and a direction angle of 330°. Vector v has magnitude of 8 units and a direction angle of 30

Dafna11 [192]

Keeping in mind that x = rcos(θ) and y = rsin(θ).

we know the magnitude "r" of U and V, as well as their angle θ, so let's get them in standard position form.

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\end{cases}\qquad \qquad v=
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-------------------------------$

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2 years ago

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3 years ago

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NEED HELP PLZ!!!!!!George and John travel 392 miles in 7 hours. If they travel at the same rate, how long will it take them to t

Paraphin [41]

Answer:

Step-by-step explanation:

a. Find the unit rate, or how many miles they traveled in one hour, by dividing:

$\frac{392}{7}=56 mph$

b. Now that we know how fast they were going, we can use it in either a proportion or in the d = rt equation. For the proportion set up, put miles on the top and hours on the bottom and solve for the unknown:

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t = 13 hours

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