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bogdanovich [222]
2 years ago
7

10 POINTS. REAL Awnsers only please. using slope intercept form write the equation of the line that goes through the point (-3,-

4) and has a slope of -2​
Mathematics
1 answer:
Lerok [7]2 years ago
5 0

Answer:

E

Step-by-step explanation:

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I think we can use the identity  sin x/2  = sqrt [(1 - cos x) /2]

cos x -  sqrt3 sqrt ( 1 - cos x) /sqrt2 = 1

cos x - sqrt(3/2) sqrt(1 - cos x) = 1
sqrt(3/2)(sqrt(1 - cos x) =  cos x - 1   Squaring both sides:-
1.5 ( 1 - cos x) = cos^2 x - 2 cos x + 1

cos^2 x - 0.5 cos x - 0.5 = 0 

cos x = 1 , -0.5

giving x = 0 , 2pi, 2pi/3,  4pi/3  ( for  0  =< x <= 2pi)

because of thw square roots some of these solutions may be extraneous so we should plug these into the original equations to see if they fit.

The last 2 results dont fit so the answer is  x = 0 , 2pi Answer
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1.)The original price of a pair of shoes is $29.95. The shoes are on sale for 30% off. Which expression would calculate the sale
LekaFEV [45]
1. 0.7(29.95)
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3. 49(0.75)(1.06)
4. 35+ 0.80m
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Hope this helps!
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3 years ago
Arithmetic sequence help!!!!
eimsori [14]

1) This is not an arithmetic sequence because it has n².

2) To find 5 first terms of this sequence, you can simply substitute n with 1,2,3,4, and 5, and calculate values of a(1),a(2), a(3), a(4) and a(5).

a(n) = 3n²- 1

n=1 a=3*1² - 1 = 3-1=2

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n=4 a=3*4² - 1 = 47

n=5 a=3*5² -1 = 74

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3 years ago
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Arte-miy333 [17]

Answer:

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Step-by-step explanation:

Since the triangle is right we can use the sine ratio to find h

sin48° = \frac{opposite}{hypotenuse} = \frac{h}{18}

Multiply both sides by 18

18 × sin48° = h

⇒ h = 13.4 cm ( to 1 dec. place )

3 0
3 years ago
What is one characteristic of a cosine function
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They are periodic functions with a period of 2π. The domain of each function is (−∞,∞) and the range is [−1,1]
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