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3 years ago

(Complete the square) (Part 1 of method)

Mathematics

1 answer:

sleet_krkn [62]3 years ago

8 0

If you want to find “x” you would need to isolated isolate the variable “x”. You do This by doing the inverse operation of the equation.

For example,

If you add 39 you’ll subtract 39.

But in this case ask yourself,

What variable do I want?

In this case it’s “x”

What is stopping “x” form being by itself?

Then do the inverse operation to get rid of what stopping x form being by itself.

If you don’t want x I’m sorry I wasn’t of help.

You might be interested in

g Students conducted a survey and found out that 36% of their peers on campus had tattoos but only 4% of their peers were smoker

IgorC [24]

Answer:

D) No, because either np or n(1−p) are less than 15.

Step-by-step explanation:

Percentage of students who had tattoos = 36%

Percentage of students who were smokers = 4%

Sample size = n = 100

The condition to use the Normal distribution as an approximation to construct the confidence interval for population proportion is:

Both np and n(1-p) must be equal to or greater than 15.

Since, we are interested in smokers only, so p = 4% = 0.04

np = 100 x 0.04 = 4

n (1 - p) = 100 x 0.96 = 96

Since, np < 15, we cannot use the Normal distribution as an approximation here.

Therefore, the correct answer is:

No, because either np or n(1−p) are less than 15.

5 0

3 years ago

William, his brother, and their 3 sisters won of the science fair prize money. What fraction of the prize

frozen [14]

Answer:

1/5 of the prize money each

Step-by-step explanation:

If there are 5 siblings and the money is being distributed equally between the five of them, each sibling would get 1/5 of the prize money.

To understand this lets think of the prize as 1 whole. If we divided 1 whole into 5 equal parts, each part would be 1/5, or you can think of it as "1 out of 5".

3 0

4 years ago

Write an equation of a circle that has the center at the origin and goes through (-3,-6)

dexar [7]

Answer:

$x^{2} +y^{2} = 45$

Step-by-step explanation:

General Equation of circle is

$(x-x_1)^{2} +(y-y_1)^{2} = r^{2}$ ----------- (1)

Here

$(x_1, y_1)= (0, 0)$

Radius r is distance from origin (x1, y1) to point (x2, y2)=(-3, -6)

$r=\sqrt{(x_2-x_1)^{2} + (y_2-y_1)^{2} }$

$r= \sqrt{(-3-0)^{2} + (-6-0)^{2} }$

$r= \sqrt{9+36}$

$r=\sqrt{45}$

Substituting values in equation (1)

$(x-0)^{2} +(y-0)^{2} =( \sqrt{45})^{2}$

$x^{2} +y^{2} = 45$

6 0

3 years ago

May i know the answer for this –5(t − 70) = –60

zimovet [89]

Answer:

-5(t - 70) = -60

t - 70 = 12 -- Divide by -5

t = 82 -- Add 70

5 0

3 years ago

Triangle X Y Z is shown. Angle X Z Y is a right angle. The length of Z X is b, the length of Z Y is a, and the length of hypoten

zimovet [89]

In triangle XYZ, angle X Z Y is a right angle. The length of Z X is b, the length of Z Y is a, and the length of hypotenuse X Y is c. Then, the side XZ which is the perpendicular, is opposite to ∠Y. Side XZ is adjacent to the ∠Y, and side ZY, which is the base, is also adjacent to ∠Y. We can say that ∠Y has been formed by the sides XZ and ZY.

It is given that,

In triangle X Y Z, angle X Z Y is a right angle or 90°.

The length of the hypotenuse XY is c.

⇒ The side with length c is adjacent to ∠Y.

The sides XZ and ZY form the right angle, thus one is base and the other is perpendicular.

Now, in relation to ∠Y, side ZY of length a is the base (adjacent to angle Y)

Similarly, side XZ of length b forms the perpendicular and is opposite to ∠Y.

Learn more about an angle here:

brainly.com/question/13954458

#SPJ1

6 0

1 year ago