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finlep [7]
3 years ago
9

I need help solving 7 and 8 . I'm lost

Mathematics
1 answer:
gizmo_the_mogwai [7]3 years ago
3 0
In 8, sum of interior angles will be 180
Let BAC and OBA be x
2x + 85 = 180
x = 180-85 divide by 2
also angles BAC AND OBA are same because O is the centre of the circle and OA and OB are the radius
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Someone help me with this question please.
grandymaker [24]
It’s 27 because u multiple the first 2 number and it’s a negative then add the rest to it
5 0
3 years ago
Write an equation for a line parallel to y=-3x+2 that passes through the point (-1,4)
Wewaii [24]

<span>y=−3x+2</span> is a linear equation in slope-intercept form with
slope <span>m=<span>(−3)</span></span>
(and y-intercept <span>=2</span>)

We want the equation of a line with slope <span>m=<span>(−3)</span></span> through the point <span>(<span>−2</span>,<span>−8</span>)</span>

Using the point-slope linear equation form:
<span><span>(y−<span>(−8)</span>)</span>=<span>(−3)</span><span>(x−<span>(−2)</span>)</span></span>

Simplifying
<span>y+8=−3x−6</span>
or, in standard form
<span>3x+y=−<span>14</span></span>

3 0
3 years ago
What are 9 mulitples of 13
vagabundo [1.1K]

Answer:

See below

Step-by-step explanation:

13*1 = 13

13*2 = 26

13*3 = 39

13*4 = 52

13*5 = 65

13*6 = 78

13*7 = 91

13*8 = 104

13*9 = 117

13*10 = 130

3 0
3 years ago
Read 2 more answers
What is the answer to the question?​
earnstyle [38]

Answer:

C

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
What is an equation for a sine curve with amplitude 2, and period 4pi radians ?
Nezavi [6.7K]
<span>1. a sine curve with amplitude 2, and period 4pi radians
</span>
the general equation of the sine curve ⇒⇒ y = a sin (nθ)
where: a is the amplitude  and  n = 2π/perid
∵ <span>amplitude 2, and period 4pi radians
</span>
∴ y = 2 sin (θ/2)

The correct answer is option D. y = 2 sin (θ/2)
===========================================

<span>2.The period and amplitude of the function ⇒⇒ y = 5 cos 2θ
</span>
<span>comparing with y = a cos nθ
</span>
where : a is the amplitude  and  n = 2π/period
<span>amplitude = 5  , period = 2π/n = 2π/2 = π
</span>

The correct answer is option B. Period: pi radians: Amplitude:5

============================================================
3. tan (2π/3) = tan 120° = -√3 
120° lie in the second quadrant and its reference angle = 180° - 120° = 60°
tan function in the second quadrant is negative
∴ tan 120° = - tan 60 = -√3

The correct answer is C. -sqrt3

=====================================================
4. <span>Tan 5π/6 = tan 150° = -(√3)/3
</span>
150° lies in the second quadrant and its reference angle = 180° - 150° = 30°
tan function in the second quadrant is negative
∴ tan 150° = - tan 30 = -(√3)/3

The correct answer is <span>B.-sqrt3/3</span>
8 0
3 years ago
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