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4 years ago

I need the answer fast please

Mathematics

1 answer:

german4 years ago

4 0

I think it’s c since like most of them make yellow, while one makes brown, even if it’s just one different colour added

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(20 points)Solve the equation cos x = sin (x + 22)

Law Incorporation [45]

Answer:

$\bold{x = 34^\circ}$

Step-by-step explanation:

Given:

$cos x = sin (x + 22^\circ)$

To solve:

The given equation.

Solution:

First of all, let us consider an important property of sine and cosine.

$sin(90^\circ-\theta )=cos\theta$

$cos(90^\circ-\theta )=sin\theta$

We can apply above property to solve for $x$ as per given equation.

$cos x = sin (x + 22^\circ)$

Changing $cosx$ to sine form:

$cosx=sin(90^\circ-x)$

$cosx=sin(90^\circ-x) = sin(x+22^\circ)$

$\therefore 90^\circ-x=x+22^\circ\\\Rightarrow 90^\circ-22^\circ=x+x\\\Rightarrow 2x=68^\circ\\\Rightarrow \bold{x = 34^\circ}$

So, solution to the equation $cos x = sin (x + 22^\circ)$ is:

$\bold{x = 34^\circ}$

7 0

3 years ago

Simplify 4^-4.<br> please help I have 10 minutes

kolezko [41]

Answer:

1/256

Step-by-step explanation:

$4^{-4}$

$(1/4)^{4}$

=> 1/256

7 0

3 years ago

Help me please !! give me right answer .

harina [27]

Answer:

2.04

Step-by-step explanation:

4 0

3 years ago

In a school with 117 seventh-grade students and about 29 students per class, the number of seventh-grade classes is about

notka56 [123]

Answer - 4 classes

117 ÷ 29 = 4.03...

That is the answer. hope this helps.

5 0

3 years ago

Read 2 more answers

6051 m is equal to how many km?

Luba_88 [7]

6,051m = 6,000m + 51m

1km=1,000 metres

--------------------------------

Therefore:

6,051 metres = 6,000/1,000km + 51/1,000km

=6,051/1,000km

=6.051km

8 0

3 years ago

Read 2 more answers