The vertex of this parabola is at (-3,-1). When the y value is 0, the x value is 4. What is the coefficient of the squatted term

1 answer:

5 0

I'm assuming by the way those points lie in the coordinate plane that this is a parabola that opens to the right, a y^2 parabola. Our x and y coordinates are (4,0), and the h and k of the vertex are (-3, -1). The standard form for this parabola is $x=a(y-k)^2+h$ . We need to find a. Filling in accordingly, $4=a(0+1)^2-3$ . Simplifying a bit we get 4 = a - 3. a = 7. The parabola, then, has the equation $x=7(y+1)^2-3$

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Find the value of y when x=3<br> y=2x3<br> y=0

MaRussiya [10]

Answer: 54

Why? You need to put 3 in for x so you get
2(3)^3
3 to the third power is 3*3*3 which equals 27
2(27)
Now you must do 2 times 27 and you get 54

Hope this helps

8 0

3 years ago

What is the probability that a randomly selected graduate has a job if he or she is attending college? Give your answer as

Andrej [43]

Complete question :

Suppose that of the 300 seniors who graduated from Schwarzchild High School last spring, some have jobs, some are attending college, and some are doing both. The following Venn diagram shows the number of graduates in each category. What is the probability that a randomly selected graduate has a job if he or she is attending college? Give your answer as a decimal precise to two decimal places.

What is the probability that a randomly selected graduate attends college if he or she has a job? Give your answer as a decimal precise to two decimal places.

Answer:

0.56 ; 0.60

Step-by-step explanation:

From The attached Venn diagram :

C = attend college ; J = has a job

P(C) = (35+45)/300 = 80/300 = 8/30

P(J) = (30+45)/300 = 75/300 = 0.25

P(C n J) = 45 /300 = 0.15

1.)

P(J | C) = P(C n J) / P(C)

P(J | C) = 0.15 / (8/30)

P(J | C) = 0.5625 = 0.56