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ratelena [41]
3 years ago
12

Tina is bored, very bored. She has decided there is no time like the present to take up a new hobby, paper football creation and

flight. She finds some construction paper and is ready to begin. Her goal is to be able to launch a paper football that will land directly in front of her dog in the hopes that she can film its surprised reaction for TikTok.
Being a top algebra student, she models the height h(x), above the ground with the equation,h(x)=-x^2+10x-16, where x is the number of seconds since Tina hits record on her phone.

How many seconds would it take Tina to launch the football after she begins recording?
Mathematics
2 answers:
Allushta [10]3 years ago
6 0

Answer:

4 or 5 seconds

Step-by-step explanation:

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Harman [31]3 years ago
5 0

Answer: 4 or 5 seconds

Step-by-step explanation:

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Which equation represents the line containing (0,-2) and (2,-1)?
77julia77 [94]

Answer:

The answer is A.

Step-by-step explanation:

You can make a test by substituing x-coordinate into the equation :

y =  \frac{1}{2} x - 2

let \: x = 0

y =  \frac{1}{2} (0) - 2

y =  - 2 \: (correct)

let \: x = 2

y =  \frac{1}{2} (2) - 2

y = 1 - 2

y =  - 1 \: (correct)

8 0
3 years ago
Solve 15 and 21, will give BRAINLIST!!
xeze [42]

Answer:

Step-by-step explanation:

<h2>4/x=2/10</h2>

cross multiplication:

4*10=2*x

40=2x

x=40/2=20

<h2>w/2 = 4.5/6.8</h2>

6.8w=2(4.5)

6.8w=9

w=9/6.8=1.32352941

4 0
3 years ago
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If you place a 20 ft ladder 4ft from the base of the wall. How high up will it reach? Round answer to the nearest tenth
xeze [42]

Answer:

h = 19.6 ft

Step-by-step explanation:

Given that,

A 20 ft ladder 4ft from the base of the wall.

The height of the ladder, H = 20 ft

The base distance, b = 4 ft

We need to find the height of the reach. Let it is P.

Using Pythagoras theorem,

H^2=b^2+P^2\\\\P=\sqrt{H^2-b^2}\\\\P=\sqrt{20^2-4^2}\\\\=19.59\ ft

or

P = 19.6 ft

So, the height is 19.6 ft.

7 0
3 years ago
Which of the following is equivalent to (5 /k) + ((k + 3) /(k + 5)) ?
Mars2501 [29]
\frac{5}{k}+\frac{k+3}{k+5}=\frac{5(k+5)}{k(k+5)}+\frac{k(k+3)}{k(k+5)}=\frac{5k+25+k^2+3k}{k(k+5)}=\frac{k^2+8k+25}{k(k+5)}\\\\Answer:E
4 0
4 years ago
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Caitlyn needs to solve the equation: 2(3x+1)=3(2-x). after copying the problem correctly she uses the Properties of Algebra to s
astra-53 [7]

Answer:

x=49

Step-by-step explanation:

2(3x+1)=3(2−x)

Step 1: Simplify both sides of the equation.

2(3x+1)=3(2−x)

(2)(3x)+(2)(1)=(3)(2)+(3)(−x)(Distribute)

6x+2=6+−3x

6x+2=−3x+6

Step 2: Add 3x to both sides.

6x+2+3x=−3x+6+3x

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Step 4: Divide both sides by 9.

9x9=49

x=49

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3 years ago
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