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kodGreya [7K]
2 years ago
8

Hello i really need help, please help me. thank you :(

Mathematics
2 answers:
vlabodo [156]2 years ago
6 0

Answer:

12/13

Step-by-step explanation:

The cosine of an angle in a triangle can be calculated as a relation between the adjacent side and the hypothenuse. So, in this case the adjacent side of θ is 24 and the hypothenuse is  26.

Then:

cos(θ) = 24/26 = 12/13

Snezhnost [94]2 years ago
6 0

Answer:

cosФ=12/13

Ф=34.57 degrees

Step-by-step explanation:

cosФ=adj/hyp

cosФ=24/26=12/13=0.923076

Ф=34.57 degrees

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What is the phase of y= -3cos (3x-pi) +5
ratelena [41]

Answer:

- \frac{\pi}{3}

Step-by-step explanation:

Given

y = -3\cos(3x - \pi) + 5

Required

The phase

We have:

y = -3\cos(3x - \pi) + 5

Rewrite as:

y = -3\cos(3(x - \frac{\pi}{3})) + 5

A cosine function is represented as:

y = A\cos(B(x + C)) + D

Where:

C \to Phase

By comparison:

C = - \frac{\pi}{3}

Hence, the phase is: - \frac{\pi}{3}

3 0
3 years ago
Given a rectangle with an area of 20 square units, if the width is x units and the length is x + 1 units, what is the difference
ollegr [7]

Answer: 1unit.

Step-by-step explanation:

Area of the rectangle

A = length × width

Since the area = 20 and the width is x and the length is x + 1.

We now substitute for the values in the above formula and solve for x

20 = x × x + 1

20 = x( x + 1 ), we now open

20 = x² + x , then re arrange.

x² + x - 20 = 0, this is a quadratic equation.we solve for x using quadratic means

Here, I am going to solve using factorization by grouping

x² + x - 20 = 0

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x( x + 5 ) - 4( x + 5 ) = 0

( x + 5 )( x - 4 ). = 0

Therefore, the solution for x will be

x = -5 or 4, but x can not be -5 ( negative), so x = 4.

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5 0
3 years ago
How to find the slope of two points
NikAS [45]

-- Find how much 'y' changes from the first point to the second one.

-- Find how much 'x' changes from the first point to the second one.

-- The slope of the line going from the first point to the second one is

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3 0
2 years ago
H (t) = 2t - 2 g(t) = 4t + 5 Find (h(g(t)) ​
ASHA 777 [7]

Answer:

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Step-by-step explanation:

We are given the two functions:

h(t)=2t-2\text{ and } g(t)=4t+5

And we want to find:

h(g(t))

So, by substitution, we acquire:

h(g(t))=2(4t+5)-2

Distribute:

h(g(t))=8t+10-2

Simplify:

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5 0
2 years ago
If Alberto's bill is $45.47 with tax. And he wants to leave a 20% tip. How much tip will he leave? * round to the nearest dollar
Sindrei [870]

Answer:

i tried but all i got was like 80 percent

Step-by-step explanation:

6 0
2 years ago
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