3 years ago

Help me answer these please will give brainlst

Mathematics

1 answer:

IceJOKER [234]3 years ago

6 0

Answer:

7. (-1, 10)

8. (7,-6)

9. C

10. One solution, Infinitely Many Solutions, No Solution

11. Adult tickets: 52 Student tickets: 68

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find the scale factor and ratio of perimeters for a pair of similar octagons with areas 49 ft^2 and 64 ft^2

timama [110]

Answer:

scale factor: 1.16

perimeters: 21.84 ft and 25.36 ft

4 0

3 years ago

Read 2 more answers

The graph of the function showing the path of a soccer ball thrown by a goalie in a video game, f(x) = –0.05x2 + 2.5x + 5.2, is

Tju [1.3M]

Answer:

The correct option is 4.

Step-by-step explanation:

The given function is

$f(x)=-0.05x^2+2.5x+5.2$

Where f(x) is height of the ball and x is the distance.

It is a polynomial function with degree 2. All polynomial functions are defined for all real numbers, therefore the mathematical domain of the function is all real numbers.

$-\infty$

Factorize the given function.

$f(x)=-0.05(x^2-50x-104)$

$f(x)=-0.05(x^2-52x+2x-104)$

$f(x)=-0.05(x(x-52)+2(x-52))$

$f(x) = -0.05 (x - 52) (x + 2)$

Put f(x)=0 to find the x intercepts.

$0 = -0.05 (x - 52) (x + 2)$

Equate each factor equal to 0.

$x=52,-2$

Therefore at x=52 and -2, the graph of f(x) intersects x-axis. Before x=-2 and after x=52 the values of f(x) is negative. Height cannot be negative, therefore reasonable domain is lie between -2 to 52.

Distance cannot be negative, therefore the reasonable domain must be positive.

$0\leq x\leq 52$