3 years ago

Sine and cosine ratios

Mathematics

1 answer:

Dima020 [189]3 years ago

7 0

Sin(angle) = opposite leg / hypotenuse (X)

sin(48) = 5 / X

X = 5 / sin(48)

X = 6.7

The answer is C.

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Roni and Allie are mowing the grass at the soccer field. Roni has a riding lawn mower and can mow the field in 30 minutes. Allie

vagabundo [1.1K]

Answer:

About 0.71 of the field

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2 years ago

For a certain model of car the distance d required to stop the vehicle if it is traveling at v mi/h is given by the formula d =

enyata [817]

Given that <span>For a certain model of car the distance $d$ required to stop the vehicle if it is traveling at $v$ mi/h is given by the formula $d=v+\frac{v^2}{20}, where [tex]d$ is measured in feet.

If Kerry wants her stopping distance not to exceed 75 ft, then the range of speeds (in mi/h) can she travel is obtained as follows:

$v+ \frac{v^2}{20} \leq75 \\ \\ 20v+v^2\leq1,500 \\ \\ v^2+20v+100\leq1,500+100 \\ \\ (v+10)^2\leq1,600 \\ \\ |v+10|\leq\sqrt{1,600} \\ \\ -40\leq v+10\leq40 \\ \\ -40-10\leqv\leq v\leq40-10 \\ \\ -50\leq v\leq30$

Therefore, the range of speed she can travel is $v\leq30\ mi/hr$
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3 years ago

Please help on this?

Yakvenalex [24]

A. is right

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3 years ago

Read 2 more answers

The temperature has been going down at a constant rate. In 4 hours it went down 12 degrees. Which expression best shows the temp

Ganezh [65]

I believe -3t is the answer.

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3 years ago

X <-4 graphed as an inequality on a number line

iris [78.8K]

See it is < and not ≤ so we don't include -4

put a circle around -4 but don't shade it in
to get there, move 4 units left from 0

then we see x is less than -4
so shade to the left of the circle

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3 years ago