All categories

3 years ago

PLEASE HELP ME ASAP I NEED TO DO THIS

Mathematics

1 answer:

yarga [219]3 years ago

8 0

Answer:

1. D

Step-by-step explanation:

You might be interested in

Can I get help on this

Murljashka [212]

It's the second to last one.

7 0

3 years ago

Slope 2/7; through (8,0)

Lera25 [3.4K]

Are you looking for the equation of the line? If so do you need point slope or slope intercept form?

8 0

3 years ago

Read 2 more answers

Ron gets $5 on the first day at work, the square of that amount on the second day, and three times the amount of the second day

Sedaia [141]

Answer:

$75

Step-by-step explanation:

he got 75

3 0

3 years ago

A ball is tossed between three friends. The first toss is 8.6 feet, the second is 5.8 feet, and the third toss is 7.5 feet, whic

Rainbow [258]

angles formed by these tosses are $79.45, 59.02$ and $41.53$ degrees to the nearest hundredth.

<u>Step-by-step explanation:</u>

Here , We have a triangle with sides of length 8.6 feet, 5.8 feet and 7.5 feet.

The Law of Cosines (also called the Cosine Rule) says:

$c^2 = a^2 + b^2 - 2ab (cosx)$

Using the Cosine Rule to find the measure of the angle opposite the side of length 8.6 feet:

⇒ $c^2 = a^2 + b^2 - 2ab (cosx)$

⇒ $c^2 -a^2 - b^2 = -2ab (cosx)$

⇒ $(cosx) =\frac{ c^2 -a^2 - b^2}{ -2ab}$

⇒ $(cosx) =\frac{(8.6^2 - 5.8^2 - 7.5^2)}{ ( -2(5.8)7.5)}$

⇒ $(cosx) =0.18310$

⇒ $cos^{-1}(cosx) = cos^{-1}(0.18310)$

⇒ $x = 79.45$

The Law of Sines (or Sine Rule) is very useful for solving triangles:

$\frac{a}{sin A} = \frac{ b}{sin B} = \frac{c}{sin C}$

We can now find another angle using the sine rule:

⇒ $\frac{ 8.6 }{ sin 79.45} = \frac{7.5}{ sin Y}$

⇒ $sin Y = \frac{(7.5 (sin 79.45))}{ 8.6}$

⇒ $Y = 59.02 degrees$

So, the third angle = $180 - 79.45 - 59.02 = 41.53 degrees.$

Therefore, angles formed by these tosses are $79.45, 59.02$ and $41.53$ degrees to the nearest hundredth.

4 0

3 years ago

Pleaseplease help me

Mars2501 [29]

Answer:

1,4

Step-by-step explanation:

The anwser is 1,4

4 0

3 years ago