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3 years ago

10

Demilade piays football for 2 hours, badminton for 3 hours, volleyball for six hours, Nintendo for 1.5 hours and softball for ei

ght hours each week. How many hours per week does he played outdoor

1 answer:

skad [1K]3 years ago

5 0

he plays for 13 hours every week

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Consider the Quadratic function f(x) = 4x^2 - 1. Its vertex is Preview The x value of its largest x-intercept is x = The y value

Grace [21]

Answer:

Vertex = (0,-1)

The x value of its largest x-intercept is $x=\frac{1}{2}$ .

The y value of the y-intercept is y = -1.

Step-by-step explanation:

The given function is

$f(x)=4x^2-1$ .... (1)

The vertex form of a parabola is

$g(x)=a(x-h)^2+k$ ..... (2)

where, a is a constant, (h,k) is vertex of the parabola.

From (1) and (2) we get

$a=4,h=0,k=-1$

So, the vertex of the parabola is (0,-1).

Substitute f(x)=0 in equation (1) to find x-intercepts.

$0=4x^2-1$

Add 1 on both sides.

$1=4x^2$

Divide both sides by 4.

$\frac{1}{4}=x^2$

Taking square root both sides.

$\pm \sqrt{\frac{1}{4}}=x$

$\pm \frac{1}{2}=x$

The x-intercepts are $-\frac{1}{2}$ and $\frac{1}{2}$ .

Therefore the x value of its largest x-intercept is $x=\frac{1}{2}$ .

Substitute x=0 in equation (1) to find the y-intercept.

$f(0)=4(0)^2-1=-1$

Therefore the y value of the y-intercept is y = -1.

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3 years ago

lucy had 48 balloon for her berthday if 1/4 of the balloon are red 1/3 of then are blue and the rest are yellow how many yellow

ElenaW [278]

24 Yellow balloons
1/4 of the balloons are red = 12 Red
48-12 = 36
36*(1/3) = 24
1/3 of the balloons are blue = 12 Blue
the rest are yellow = 48-24 = 24

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3 years ago

Need help wit questions 1,2, and 3

12345 [234]

Answer:

number 1 is 6 im not smart tho so you shouldnt put that down

Step-by-step explanation:

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2 years ago

Leslie won 34 pieces of candy playing ring toss at the county fair. At school she gave one to every student in her math class. S

Dafna1 [17]

Answer:

34-16 is 18, she has 18 left candies

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3 years ago

The formula C=kmt is used to find the number of calories a person burns during exercise, where m is the person’s weight in pound

QveST [7]

The unit of C is calories, m is for pounds, t is minutes. We supply these units in the equation.
calories = k (pounds)(minutes)
The unit of k should be equal to calories/(pounds x minutes). That is,
unit of k is cal/lb.min

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3 years ago