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Leni [432]
4 years ago
6

The ball's height( in meters above the ground), x seconds after Amir threw it, is modeled by : h(x)=-(x-2)^2 +16 what is the hei

ght of the ball at the time its thrown?
Mathematics
2 answers:
IgorLugansk [536]4 years ago
7 0

Answer:

12 m

Step-by-step explanation:

Bess [88]4 years ago
3 0

Answer:

20 m

Step-by-step explanation:

The height of the ball in metres is given as:

h(x) = (x-2)^2 + 16

where xis time, in seconds.

At the instant that the ball is thrown, the time is 0 seconds. This means that the height will be h(0):

h(0) = (0 - 2)^2 + 16\\\\\\h(0) = (-2)^2 + 16\\\\\\h(0) = 4 + 16\\\\\\h(0) = 20 m

The height of the ball is 20 metres.

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9 (x - 2) = 7x + 5<br> Does x have a value hurry only 10 minutes left!!
lyudmila [28]

Answer:

x = 11.5

Step-by-step explanation:

9 (x - 2) = 7x + 5

9x - 18 = 7x + 5

    +18          +18

9x = 7x + 23

-7x   - 7x

2x = 23

---    ---

2       2

x = 11.5

 

4 0
3 years ago
Instructions: Find the measure of the indicated angle to the<br> nearest degree
Andru [333]

Answer:

See below.

Step-by-step explanation:

We want to find the unknown angle and we know the sides opposite to it and the hypotenuse. Therefore, we can use sine.

Recall that sine is the ratio of the opposite to the hypotenuse:

\sin(\theta)=opp/hyp

Plug in the numbers. The opposite is 20 and the hypotenuse is 55.

\sin(\theta)=20/55

Solve for theta (use a calculator):

\sin(\theta)=20/55\\\theta=\arcsin(4/11)\\\theta\approx21.23\approx21\textdegree

6 0
3 years ago
What is 499.721 as whole number
Vlad1618 [11]
The answer is 500 since you need to round at the ones place
7 0
3 years ago
Berapa jika ½+¾ dan dijadikan sebagai pecahan desimal?
Snezhnost [94]

\\ \sf\longmapsto \dfrac{1}{2}+\dfrac{3}{4}

\\ \sf\longmapsto \dfrac{2+3}{4}

\\ \sf\longmapsto \dfrac{5}{4}

  • Convert to mixed fraction

\\ \sf\longmapsto 1\dfrac{1}{4}

5 0
3 years ago
Read 2 more answers
The height of a particular triangle equals its base length. A new triangle is formed by dividing the hype by 2 and its area is 3
iris [78.8K]

Answer:

Height and base are both 12 in

Step-by-step explanation:

Formula area triangle: area = (height * base) /2

Since for the first triangle height and base are the same we will call is x.

The area for the first triangle is

area = (x^2) /2 = 0.5x^2

The new triangle area is

first triangle - 36 = ((x/2) * x)/2

0,5x^2 - 36 = (0,5x * x)/2

0,5x^2 - 36 = (0,5x^2)/2

0,5x^2 - 36 = 0,25x^2

0,25x^2 = 36

x^2 = 144

X = square root (144) = 12 in

5 0
4 years ago
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