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3 years ago

⭐️ Please help... Giving all the points I have!

Mathematics

1 answer:

GalinKa [24]3 years ago

4 0

Answer:

Oh!!thanks for the points..But I don't knoelw the answer:(

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Which of the following is an advantage to using graphs and diagrams?

kondaur [170]

"They help to visualize the problem" is the statement among the following statements given in the question that <span>is an advantage to using graphs and diagrams. The correct option among all the options that are given in the question is the second option or option "B". I hope it helps you.</span>

3 0

3 years ago

Read 2 more answers

If cos⁡ x=−45, and 180° < x < 270°, what is tan⁡(2x)?

iVinArrow [24]

$Tan2x =\frac{-24}{7}$

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

Here we have , cos x = -4/5 ( corrected as given -45 which is not possible ) ,

180° < x < 270° i.e. in third quadrant . We need to find tan⁡(2x) . Let's find out:

⇒ $Tan\alpha = \frac{sin\alpha }{cos\alpha }$

⇒ $Tan\alpha = \frac{\sqrt{1-(cos\alpha)^2} }{cos\alpha }$

⇒ $Tan\alpha = \frac{\sqrt{1-(\frac{-4}{5})^2} }{\frac{-4}{5} }$

⇒ $Tan\alpha = \frac{-5}{4}\sqrt{1-(\frac{16}{25}) }$

⇒ $Tan\alpha = \frac{-5}{4}\sqrt{(\frac{25-16}{25}) }$

⇒ $Tan\alpha = \frac{-5}{4}(\frac{3}{5}) }$

⇒ $Tan\alpha = \frac{-3}{4}$ , since in third quadrant . $Tan\alpha = \frac{-3}{4}$ remains same .

Now , $Tan2x = \frac{2tanx}{1-(tanx)^{2}}}$

⇒ $Tan2x = \frac{2tanx}{1-(tanx)^{2}}}$

⇒ $Tan2x = \frac{2(\frac{-3}{4})}{1-(\frac{-3}{4})^{2}}}$

⇒ $Tan2x = \frac{-3}{2}(\frac{16}{7})$

⇒ $Tan2x =\frac{-24}{7}$

Therefore, $Tan2x =\frac{-24}{7}$ .

5 0

4 years ago

What is it? help! PLS!

Natali5045456 [20]

Answer:

Step-by-step explanation:

The 2 trains will pass each other in 2 hours because 80mph+60mph=140mph

You take 140x2=280

They will pass each other at 5:00

8 0

3 years ago

Read 2 more answers

A bowl of soup at 95!C (too hot) is placed in a 22!C room. One minute later, the soup has cooled to 83!C. When will the temperat

worty [1.4K]

Answer:

in 3 minutes and 50 seconds

Step-by-step explanation:

soup = 95c

after 1 minute = 83c

after 2 minutes = 71c

after 3 minutes = 59

soup cools down 0.2c in 1 seconds

so 10 seconds = 2c

in 3 minutes and 50 seconds = 49c

4 0

3 years ago

Use the point-slope formula to write an equation of the line that passes through (-5,3) and

trapecia [35]

Answer:

The equation in point slope form is $y-6=\frac{1}{3}(x-4)$

The equation in slope intercept form is $y=\frac{1}{3}x-\frac{14}{3}$

Step-by-step explanation:

step 1

Find the slope m

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

we have

$(-5,3),(4,6)$

Substitute the values

$m=\frac{6-3}{4+5}$

$m=\frac{3}{9}$

simplify

$m=\frac{1}{3}$

step 2

Find the equation of the line in point slope form

$y-y1=m(x-x1)$

we have

$m=\frac{1}{3}$

$(4,6)$

substitute

$y-6=\frac{1}{3}(x-4)$ ---> equation in point slope form

step 3

Find the equation of the line in slope intercept form

$y=mx+b$

$y-6=\frac{1}{3}(x-4)$ ----> convert to slope intercept form

$y-6=\frac{1}{3}x-\frac{4}{3}$

$y=\frac{1}{3}x-\frac{4}{3}+6$

$y=\frac{1}{3}x-\frac{14}{3}$

5 0

3 years ago