3 years ago

Lesson 4 problem solving practice

Mathematics

1 answer:

Kay [80]3 years ago

4 0

Answer:

what is your question?

Step-by-step explanation:

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Derrick made a goal for 2 points during the basketball game. The path of the ball's height in feet can be modeled by y=-x^2-2x+2

madreJ [45]

add my discord Big_Man #8293

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3 years ago

HELP ME!! im so stumped. will give brainliest!

Olegator [25]

Answer:

$x=1+\sqrt{3}$ and $x=1-\sqrt{3}$

Step-by-step explanation:

We have been given the parabola with vertex (1, -9) and y intercept at (0, -6).

Now we need to find the x-intercepts of that parabola. So first we begin by finding the equation of parabola using vertex formula:

$y=a\left(x-h\right)^2+k$

Vertex for this formula is given by (h,k)

Compare that with given vertex (1,-9), we get: h=1, k=-9

So plug these into vertex formula:

$y=a\left(x-1\right)^2-9$ ...(i)

Plug given point (0, -6). into (i)

$-6=a\left(0-1\right)^2-9$

$-6=a\left(-1\right)^2-9$

$-6=a\left(1\right)-9$

$-6+9=a$

$3=a$

Plug a=3 into (i)

$y=3\left(x-1\right)^2-9$

Now to find x-intercept, we just plug y=0 and solve for x

$y=3\left(x-1\right)^2-9$

$0=3\left(x-1\right)^2-9$

$9=3\left(x-1\right)^2$

$3=\left(x-1\right)^2$

$\pm \sqrt{3}=x-1$

$1+\pm \sqrt{3}=x$

Hence final answer are

$x=1+\sqrt{3}$ and $x=1-\sqrt{3}$

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3 years ago

Simplify the expression the given expression 7b + 6 - 3b + 2

yanalaym [24]

Answer:

4 x (b+2)

Step-by-step explanation:

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Sara has 50 dollars to spend at an amusement park. Admission is 20 dollars, and tickets cost 1.50 per ride. Write an equation to

ra1l [238]

Answer:

Step-by-step explanation:

50 - 20 = 30

30 ÷ 1.50 = 20

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3 years ago

Look at the two inequalities. Select all the values from the set (4 ½, 7, 10, 15.5, 20) that make both inequalities true.

dem82 [27]

Answer:15

Step-by-step explanation:

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3 years ago

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