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2 years ago

14

If 0 is in the quadrant IV and sin 0=1/2, then cos0___

1 answer:

GuDViN [60]2 years ago

3 0

Negative root 3 over 2

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Some Quadratic functions <br>I desperately need some help

Daniel [21]

Answer:

$\large\boxed{0=3x^2+2x-2}\\\\\boxed{0=-3x+3x^2-2}\\\\\boxed{0=-1x-2+3x^2}$

Step-by-step explanation:

$\text{The quadratic equation:}\\\\ax^2+bx+c=0\\\\a-coefficient\\\\c-constant\ term\\\\\text{We have}\ coefficient\ a=3\ \text{and}\ constant\ term\ c=-2.\\\\\text{Therefore the equation is:}\\\\3x^2+bx-2=0\\3x^2-2+bx=0\\bx+3x^2-2=0\\bx-2+3x^2=0\\-2+3x^2+bx=0\\-2+bx+3x^2=0$

6 0

2 years ago

Jamal has $15.00 to spend at the concession

oee [108]

I think it’s B. 7.50+1.50x<_15

6 0

2 years ago

Read 2 more answers

Area of a circle is 80 cm². Work out the circumference of the circle.

GuDViN [60]

Answer:

The circumference of circle is: 31.714 cm

Step-by-step explanation:

Let C be the circumference of the circle

And A be the area of circle

It is given that:

$A = 80cm^2$

We have to find the radius first so that it can be used to find the circumference

The area of circle is given by the formula:

$A = \pi r^2$

Putting the value of area

$80 = 3.14 * r^2\\\frac{80}{3.14} = r^2\\r^2 = 25.477$

Taking square root on both sides

$\sqrt{r^2} = \sqrt{25.477..}\\r = 5.0475\ cm$

Now

$C = 2\pi r$

Putting the value of radius

$C = 2 * 3.14 * 5.05\\C = 31.714\ cm$

Hence,

The circumference of circle is: 31.714 cm

3 0

2 years ago

What is the equation of the line shown in the graph?

Anvisha [2.4K]

Answer:

y=4/1x+-3

Step-by-step explanation:

I hope this helps...

8 0

3 years ago

50 points!!! please hurry i need this answer . see pic below

Elza [17]

Sum of two Interiors=Exterior

$\\ \rm\rightarrowtail x+20+3x-7=7x-17$

$\\ \rm\rightarrowtail 4x+13=7x-17$

$\\ \rm\rightarrowtail -3x=-30$

$\\ \rm\rightarrowtail x=10$

m<NOP=7(10)-17=70-17=53

8 0

2 years ago