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3 years ago

What is the y-value of the vertex of the function f(x) = –(x – 3)(x + 11)?

1 answer:

5 0

Expand
f(x)=-1x^2-8x+33

x coordinate of vertex is -b/2a in the form ax^2+bx+c=y
a=-1
b=-8
-(-8)/2(-1)=8/-2=-4
plug back in to get y value

y=-(-4^2)-8(-4)+33
y=-16+32+33
y=49

y value is 49

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Pls help i don’t understand

Free_Kalibri [48]

Answer: 495 is the answer

Step-by-step explanation:

11 for the table is 880

11 for the graph is 385

880-385

4 0

2 years ago

Witch of the following are the factors of 4b^2 - 16?

luda_lava [24]

4b^2 - 16 = (2b + 4)(2b - 4)

difference of squares
a^2 – b^2 = (a + b)(a – b)

4 0

3 years ago

The base of a cube is 1/4 ft squared. Whats the volume of the cube? also can you explain your answer so i can answer other quest

MrMuchimi

It would be 1/64 I hope this helps with your question.

8 0

3 years ago

Read 2 more answers

A soccer ball has an interior diameter of 22 cm. How many cubic centimeters of air does a soccer ball

Delvig [45]

Answer:

Volume of soccer ball = 5,572.45 Cm³ (Approx)

Step-by-step explanation:

Given:

Diameter of soccer ball = 22 Cm

Radius of soccer ball = 22 Cm / 2 = 11 Cm

Find:

Volume of soccer ball = ?

Computation:

$Volume\ of\ soccer\ ball = \frac{4}{3} \pi r^3\\\\ Volume\ of\ soccer\ ball = \frac{4}{3} \times\frac{22}{7} \times 11^3\\\\ Volume\ of\ soccer\ ball = 5,572.45332$

Volume of soccer ball = 5,572.45 Cm³ (Approx)

Therefore, Soccer ball contain 5,572.5 Cm³ of air.

5 0

3 years ago

The midpoint of is point P at (−16,6). If point A is at (−10,8), what are the coordinates of point B? (−42,20) (−22,4) (−13,7) (

statuscvo [17]

Answer:

B (-22 , 4)

Step-by-step explanation:

-16=(-10+x)/2

*2 *2

-10+x=-32

+10 +10

x=-22

6=(8+y)/2

*2 *2

12=8+y

-8 -8

4=y

so B(-22, 4)

6 0

3 years ago