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4 years ago

Can anyone solve these for me?

Mathematics

1 answer:

alex41 [277]4 years ago

3 0

$\theta = 38^o
\\\ tan(38^o) = \frac{x}{3}, x = 3tan(38^o), x\approx2.344
\\\ sin(38^o) = \frac{2.344}{y}, y = \frac{2.344}{sin(38^o)}, y \approx 3.807$ Geometry Rule: SOH CAH TOA.
Sine = opposite over hypotenuse
Cosine = adjacent over hypotenuse
Tangent = opposite over hypotenuse
I won't solve all of these for you because I find that solving it on your own is an important step in learning to actually understand how this works.

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Log (w2+21) - log (10)

UNO [17]

Answer:

$w =7\ or\ w =3$

Step-by-step explanation:

Given

The right question is:

$\log(w^2+ 21) = \log(10w)$

Required

Solve for w

$\log(w^2+ 21) = \log(10w)$

Cancel log on both sides

$w^2+ 21 = 10w$

Equate to 0

$w^2 - 10w+ 21 = 0$

Split

$w^2 - 3w - 7w+ 21 = 0$

Factorize

$w(w - 3) - 7(w-3) = 0$

Factor out w - 3

$(w - 7)(w-3) = 0$

Solve for w

$w - 7 = 0\ and\ w - 3 = 0$

$w =7\ or\ w =3$

6 0

3 years ago

Which equation does the graph below represent?

Stels [109]

I hope that helps ..... Y=2x

6 0

3 years ago

Read 2 more answers

How many times is 77 grader than 34

Agata [3.3K]

Answer:

77- 43=34

It needs to be added by 43 to get 77.

So, 43 is the answer.

8 0

4 years ago

How many solutions does the following system have? y=2x-12 y=3x+12

In-s [12.5K]

The system has one solution

Step-by-step explanation:

Let us revise the type of the solutions of a system of equations

One solution if the coefficients of x or/and y are different in the simplest form of the two equations
Infinite many solutions if the coefficients of x , y and the numerical terms are equal in the simplest form of the two equations
No solution if the coefficients of x and y are equal and the numerical terms are different in the simplest form of the two equations

The system of equations is:

y = 2x - 12 ⇒ (1)

y = 3x + 12 ⇒ (2)

∵ The equations are in its simplest form

∵ The coefficients of x in the two equations are different

- That is the 1st case above

∴ The system has one solution

Let us prove that by solving the system

To solve the system of equations equate (1) and (2) to find x

∵ 3x + 12 = 2x - 12

- Subtract 2x from both sides

∴ x + 12 = -12

- Subtract -12 from both sides

∴ x = -24

- Substitute the value of x in equation (1) or (2) to find y

∵ y = 3(-24) + 12

∴ y = -72 + 12

∴ y = -60

∴ The solution of the system is (-24 , -60)

The system has one solution

Learn more:

You can learn more about the system of equations in brainly.com/question/6075514

#LearnwithBrainly

7 0

3 years ago

What Is 3 Over 4 Plus 7 Over 8 Plus 5 Over 6 ? Please Help

sesenic [268]

First 3/4 = 18/24
7/8 = 21/24
5/6 = 20/24
18+21+20=59/24
Hope this helps too!

3 0

4 years ago