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3 years ago

How do you do b,c,d?

Mathematics

1 answer:

adoni [48]3 years ago

5 0

Step-by-step explanation:

(b) x is at 2 twice, and -2 twice.

y is at 2 three times, and -2 three times.

The graph that fits is I.

y is at 2 once, and is never negative.

The graph that fits is IV.

(d) x is at 2 and stays there for a period of time.

y is at -2 and stays there for a period of time.

The graph that fits is II.

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2. Given the equation of a circle in standard form, identify the center, radius, and graph the circle.

Varvara68 [4.7K]

Answer:

Center: ( -1 , 2 )

Radius: 6

Step-by-step explanation:

The equation for a circle is given as follow:

$(x-h)^{2} +(y-k)^{2} =r^{2}$

Where,

the Center is: ( h , k ) (note that the signs of the number are different)

and the radius is: r

So if we compare the original circle equation to the equation in the question we can see that:

$(x+1)^{2} +(y-2)^{2} =36$

the Center is: (-1,2)

and the radius is: $\sqrt{36}$ = 6

2. To draw the graph find points that lay on the circle, it's better to take the values of x and y from the Center:

first sub y=2 in the equation to find the values for x:

$(x+1)^{2} +(y-2)^{2} =36$

$(x+1)^{2} +(2-2)^{2} =36$

$(x+1)^{2} +(0)^{2} =36$

$(x+1)^{2} =36$

$x+1 =±\sqrt{36}$

$x=6-1$ AND $x=-6-1$

$x=5$ AND $x=-7$

The points are A(5,2) and B(-7,2)

second sub x= -1 in the equation to find the values for y:

$(x+1)^{2} +(y-2)^{2} =36$

$(-1+1)^{2} +(y-2)^{2} =36$

$(0)^{2} +(y-2)^{2} =36$

$(y-2)^{2} =36$

$y-2=±\sqrt{36}$

$y=6+2$ AND $y=-6+2$

$y=8$ AND $y=-4$

The points are D(-1,8) and E(-1,-4)

After finding the points write them in the graph and match them together to get the like the circle in the picture below:

8 0

3 years ago

HELP ME PLEASE PLEASE

Elina [12.6K]

yes you are correct you are very smart and the answer is 1plus1 equals 2 and its correct

Step-by-step explanation:

8 0

3 years ago

Solve for m.<br> m + 7 > 5

anastassius [24]

Answer:Move all terms not containing

to the right side of the equation.

Tap for more steps...

Multiply both sides of the equation by

⋅

Simplify both sides of the equation.

Tap for more steps...

Step-by-step explanation:

pls give me BRAINLIESTT PLSSSSSSS

5 0

3 years ago

What percent of 50 is 9?

d1i1m1o1n [39]

9 is 18% of 50. So, 50 percent also written as 50% means 50 out of 100 parts. Since there are exactly two 50s in 100, fifty percent is the same number as one half. 50 percent=0.5 in but as a fraction, its 1/2.

8 0

3 years ago

How do i solve a question like:

Lynna [10]

Let x be the original amount as per the ques tion (7/6) x= 420thus x=420*6/7=360thus the interest earned is 420 -360=60

3 0

3 years ago