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4 years ago

Please help with this problem

Mathematics

1 answer:

DedPeter [7]4 years ago

4 0

a. the maximum height is 16ft and the time is 1 second.

b. the ball stay in the air for 2 seconds

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Plz help me I am timed : (

-BARSIC- [3]

The answer to this question is 260

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3 years ago

Read 2 more answers

Zeroes of p(x)=x^-2x-3 are

drek231 [11]

Answer:

x=3 x= -1

Step-by-step explanation:

(x-3)(x+1)

x-3=0. x+1=0

x=3 x= -1

4 0

3 years ago

The diameter of a circle has length 12. The center is at*(-5, 2). Give the equation

labwork [276]

Answer:

Equation of the circle is : $x^{2} + 10x + y^{2} -4y -7 =0$

Step-by-step explanation:

Let us consider the image attached in the answer area.

The center O has the co-ordinates i.e. (-5,2) and the diameter given is 12 units.

We know that radius is half of diameter.

$\text{Radius = }\dfrac{\text{Diameter}}{2}$

$\text{Radius = }\dfrac{12}{2}\\\Rightarrow \text{Radius = 6units}$

The equation for circle given the center and radius, can be represented as:

$(x-a)^{2}+ (y-b)^{2} = r^{2}$

Where (a,b) is the co-ordinate of center and r is the radius.

Let us consider the following formula:

$(p+q)^2 = p^{2}+ q^{2} +2pq\\(p-q)^2 = p^{2}+ q^{2} -2pq$

$(x-(-5))^{2}+ (y-2)^{2} = 6^{2}\\\Rightarrow (x+5)^{2}+ (y-2)^{2} = 36\\\Rightarrow x^{2} + 25 + 10x +y^{2} + 4-4y=36\\\Rightarrow x^{2} + 10x +y^{2} -4y-7=0$

Hence, Equation of the circle is : $x^{2} + 10x + y^{2} -4y -7 =0$

4 0

3 years ago

One train traveled south at 60 mph. The other traveled east at 50 mph. How far apart were the trains after 3 hours?

Vlad [161]

Let's called the train that traveled south train A, and the train that traveled east train B

After 3 hours, train A is 180 miles South
and Train B is 150 miles East

Using Pythagoras, distance between is sqrt(180^2 + 150^2)
30 sqrt(6^2 + 5^2) = 30sqrt(36 + 25) = 30sqrt 61 = 234.307 miles

6 0

3 years ago

Which of these tables represents a linear function?

schepotkina [342]

Answer:

Step-by-step explanation:

A linear function is when it is ADDING or SUBTRACTING by the same amount every time. B is the only answer that follows this rule

8 0

3 years ago