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1 year ago

Solve the equation x^2 - x = 72

Mathematics

1 answer:

hoa [83]1 year ago

3 0

Answer is x=9 or x= -8

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Look at the figure and answer

andreyandreev [35.5K]

Answer:

$\cos x=\dfrac{8}{f}$

Step-by-step explanation:

Given that,

$\tan x=\dfrac{e}{8}\\\\\sin x=\dfrac{e}{f}$

We need to find the value of cos x.

We know that,

$\tan\theta=\dfrac{\sin\theta}{\cos\theta}$

Using the above relation,

$\dfrac{e}{8}=\dfrac{\dfrac{e}{f}}{\cos x}\\\\\cos x=\dfrac{\dfrac{e}{f}}{\dfrac{e}{8}}\\\\=\dfrac{e}{f}\times \dfrac{8}{e}\\\\=\dfrac{8}{f}$

So, the value of cos x is equal to $\dfrac{8}{f}$ .

7 0

2 years ago

The chart shows the low temperature each day in International Falls, Minnesota, during the month of February 2009. What was the

Nesterboy [21]

I think you have to list all of the temperatures in order from least to greatest during the first week (-31, -29, -9, -8, 3, 4, 6) in which case the median would be -8.

I hope this helps you and if you know the answer is wrong please let me know in the comments and I will take another look at the question to see if I can figure out the correct answer.

6 0

2 years ago

Read 2 more answers

Asia new boat has a cruising speed of 24 miles per hour at that rate how long will it take her to travel the 6 miles across old

Igoryamba

Answer:

1/4 of an hour, or 60/4=15, 15 minutes.

Step-by-step explanation:

24/1=6/x

cross product

1*6=24*x

6=24x

x=6/24

x=1/4

3 0

2 years ago

What is the equation of the line that passes through the point (6,1) and is parallel to the line x+3y=15

mrs_skeptik [129]

Answer:

hii friends are you also follow me and give me brainliest ok

and so sorry I don't no answer

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6 0

2 years ago

Complete the sentence below. A function f is _____ on an open interval I if, for any choice of x1 and x2 in I, with x1less th

mojhsa [17]

Answer:

Increasing if f' >0 and decreasing if f'<0

Step-by-step explanation:

Difference quotient got by getting

$\frac{f(x+h)-f(x)}{h}$ will be greater than 0 if function is increasing otherwise negative

Here h is a small positive value.

In other words, we find that whenever first derivative of a function f(x) is positive the function is increasing.

Here given that for x1, x2 where x1<x2, we have

if f(x1) <f(x2) then the function is decreasing.

Or if x1<x2 and if f(x1) >f(x2) for all x1, and x2 in I the open interval we say f(x) is decreasing in I.

5 0

2 years ago