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3 years ago

The measure of the reference angle is and sin 0 is

Mathematics

1 answer:

Masja [62]3 years ago

8 0

Check the picture below.

bear in mind that a reference angle, is just the angle the "terminal point" makes with the x-axis, in this case, the green one.

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7k - 3k + 11, can somebody please help me out?

Mademuasel [1]

Answer:

4k+11=4011

Step-by-step explanation:

7k - 3k=4k

4k+11=4011

7 0

3 years ago

You walk 13 meters to Physics class in 22 seconds. Calculate your average speed

Vadim26 [7]

Step-by-step explanation:

distance=13=1300m

time=22 sec

speed= 1300/22

=590

3 0

3 years ago

A circle has radius of 5cm

victus00 [196]

Answer:

A) 31.4

B)78.5

Step-by-step explanation:

A)2(pi)(r)

2*3.14*5=31.4

B)(pi)(r^2)

3.14*5^2=78.5

8 0

3 years ago

Read 2 more answers

PLEASE!! help, thanks (: <br><br> 1.Write 5,081,000,000 in scientific notation.

Jobisdone [24]

I think it would be 5,081 X 10 to the 6th power

6 0

3 years ago

(Sketch the graph x^2-7x+12=0

Nonamiya [84]

Answer:

The graph in the attached figure

Step-by-step explanation:

we have

$x^{2} -7x+12=0$

This is a vertical parabola open upward (because the leading coefficient is positive)

The vertex is a minimum

step 1

Find the vertex of the quadratic equation

Convert the equation in vertex form

Complete the squares

$(x^{2} -7x+3.5^2)+12-3.5^2=0$

$(x^{2} -7x+12.25)+12-12.25=0$

$(x^{2} -7x+12.25)-0.25=0$

Rewrite as perfect squares

$(x-3.5)^{2}-0.25=0$

The vertex is the point (3.5,0.25)

step 2

Find the x-intercepts

The x-intercepts are the values of x when the value of the function is equal to zero

we have

$(x-3.5)^{2}-0.25=0$

solve for x

$(x-3.5)^{2}=0.25$

square root both sides

$(x-3.5)=\pm0.50$

$x=3.5\pm0.50$

$x=3.5+0.50=4$

$x=3.5-0.50=3$

therefore

The x-intercepts are the points (3,0) and (4,0)

step 3

Find the y-intercept

The y-intercept is the value of y when the value of x is equal to zero

we have

$y=x^{2} -7x+12$

For x=0

$y=(0)^{2} -7(0)+12$

$y=12$

The y-intercept is the point (0,12)

step 4

Graph the quadratic equation

we have

The vertex (3.5,0.25)

The x-intercepts (3,0) and (4,0)

The y-intercept (0,12)

using a graphing tool

Plot the points and draw the figure

The graph in the attached figure

3 0

3 years ago