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Elanso [62]
2 years ago
12

Use the Special Right Triangle to evaluate sin 60°, cos 60° and tan 60°. Your answers should be exact (not a decimal).

Mathematics
2 answers:
Yuki888 [10]2 years ago
8 0

Answer:

The answer is D.

Step-by-step explanation:

soldier1979 [14.2K]2 years ago
4 0
Sin(60) = ¹/₂√3
cos(60) = ¹/₂
tan(60) = √3

The answer is D.
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If f(x) = 2x² - 6x + 8, find f(a - 2).
yan [13]

Answer: f(a-2) = 2a² - 14a + 28

Step-by-step explanation:

f(x) = 2x² - 6x + 8

you can take a-2 and substitute it for each x, which would look like this:

f(a-2) = 2(a-2)² - 6(a-2) + 8

then distribute those in ( )

f(a-2) = 2a² - 8a + 8 - 6a + 12 + 8

combine like terms

f(a-2) = 2a² - 14a + 28

7 0
1 year ago
A reflection of (–4, 5) over the x-axis is located in
olganol [36]
It’s gonna be in quadrant III because the rule for x-axis is -> (x,-y).
8 0
3 years ago
Read 2 more answers
In a translation, the y-coordinates of the pre-image increase by 8. What was the translation?
djyliett [7]

Answer:

8 up

Step-by-step explanation:

8 0
2 years ago
Help me plzz and thank u sm
vladimir2022 [97]

Answer:

The equation of the axis of symmetry is x = 7

Step-by-step explanation:

Mathematically, we have the equation of the axis of symmetry as;

x = -b/2a

where a is the coefficient of x^2 = 1

b is the coefficient of x which is -14

So, the equation of the axis of symmetry will be;

x = -(-14)/2(1) = 14/2 = 7

So the equation of the axis of symmetry is x =7

6 0
2 years ago
Can someone help me please
mojhsa [17]
You want to begin by changing your units to the same thing. The problem uses minutes and hours, and according to time 1 hour is 60 minutes.
Since we have 2 hours we want to multiply 60 by 2 to get 120. According to the problem, the biker to an extra 30 minutes and adding that to the time we already calculated we get 150.
We can say, the biker took 150 minutes to go through 45 miles. To find out how many miles he took per minute, we divide them (45/150) to get that he or she went through 0.3 miles per minute.
Again, we know 1 hour is 60 minutes, so to get how many miles per hour we want to multiply .3 by 60. This gets us 18.
Therefore, the biker travels 18 miles per hour
5 0
2 years ago
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