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3 years ago

Answer I will cashapp you!!!

Mathematics

1 answer:

Mkey [24]3 years ago

8 0

Answer:

should be y= 4x + 24 let me know if it was wrong

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Solve the equation sin x + cos x=cos 2x for 0 27. x

vodka [1.7K]

Answer:

$x=\frac{\pi}{4}$ and $x=-\frac{3\pi}{4}$

Step-by-step explanation:

We are given that sin x+cos x=cos 2x

We have to solve the given equation for $0\leq x\leq 2\pi$

$sin x+cos x=cos^2x-sin^2x$

Because $cos 2x=cos^2-sin^2$

$sinx+cos x=(sinx +cos x)(sinx-cos x)$

$1 =sin x-cos x$

$sin x=cos x$

$\frac{sinx }{cos x}=1$

$tan x=1$

$tan x=\frac{sinx}{cos x}$

$tan x=tan\frac{\pi}{4}$

$x=\frac{\pi}{4}$

Tan x is positive in I and III quadrant

In III quadrant angle $\theta$ replace by $\theta -\pi$

Therefore, $tan x=tan (\frac{\pi}{4}-\pi)=tan\frac{\pi-4\pi}{4}=tan\frac{-3\pi}{4}$

$x=-\frac{3\pi}{4}$

8 0

2 years ago

An observational study is described. Determine the given element. An educational researcher used school records to determine tha

Lelu [443]

Answer:

Step-by-step explanation:

The parameter of interest summarizes the population of interest as a whole. It also gives the value that summarizes the entire population

In this case study the parameter of interest is all children in both two parents and single parent homes living in school districts.

5 0

3 years ago

4th grade homework question 738÷3

Finger [1]

246. (it says my answer is to short but so i have to type useless stuff anyways the answer is 246 lol have a nice day!)

7 0

2 years ago

Read 2 more answers

3. Ellen has 3 times as many CD's as Sammy. Together they have 32 CD's. How many does

oksian1 [2.3K]

Answer:

Step-by-step explanation:

sammy has 8 and ellen has 24 then add sammy's 8

24+8=32

8 0

2 years ago

PLEASE DO ALL OF THESES PROBLEMS BE SPECIFIC AND I WILL GOVE BRAINLEYIST AWNSER BUT THATS ONLY IF ITS QUESTION EXCEPT 1,3, AND 1

nignag [31]

Answer:

7=(n+5)×3

6=P×9

8=(2×B)+8

9=seven multiplied by n

10=eleven plus c

11=x subtract thirty six

12= y divided by 9

13=m plus 20

14=q divided by 12

15=six b plus eight

16=five k minus 3

8 0

2 years ago