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Semmy [17]
3 years ago
5

Variables x and y are in direct proportion, and y = 12.5 when x = 25. If x = 40, then y =

Mathematics
1 answer:
BabaBlast [244]3 years ago
6 0
25/12.5 = 40/y
cross multiply
(25)(y) = (12.5)(40)
25y = 500
y = 500/25
y = 20 <====
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A bad punter on a football team kicks a football approximately straight upward with an initial velocity of 89 ft/sec.
Andrej [43]

Answer:

See below

Step-by-step explanation:

Vertical velocity will be affected by gravity in this scenario

df = do + vo t + 1/2 a t^2         do = original height = 4 ft      a = -32.2 ft/s^2

<u>df = 4 + 89 t  - 1/2 (32.2) t^2        df = height</u>

<u />

On the way up and the way down, the ball may reach height of 102.2125 ft :

102.2125 = 4 + 89 t - 1/2 (32.2) t2   re-arrange to:

-16.1 t^2 + 89t - 98.2125 =0  

      Use Quadratic Formula to find <u>t =   1.5 and 4.0 s </u>

6 0
2 years ago
Automatic Zoom
Solnce55 [7]
D! I’ve taken this

Please mark me as brainliest!
7 0
3 years ago
Helpppppppppppppppppppppppppppppppp
Dafna1 [17]
Answer:
1/625

Explanation:
In case of multiplication of numbers with same base, we add the powers.
This means that:
a^x * a^y = a^(x+y)

Applying this to the given, we will find that:
(5^-1) * (5^-3) = 5^(-1-3)
                      = 5^-4
                     = 1/625

Hope this helps :)
4 0
3 years ago
Read 2 more answers
Klnklnklnklnlklnklnklnklknlknlknlknlknlkn
Aleonysh [2.5K]
I believe the answer is 48 ... hope this helps
5 0
3 years ago
PLEASE HELP!!!!!!!!<br> a2 - 10ab + 3b^2
Zielflug [23.3K]
Let's simplify step-by-step.

<span><span><span>a2</span>−<span><span>10a</span>b</span></span>+<span>3<span>b2

</span></span></span>There are no like terms.

Answer:

<span>=<span><span><span>a2</span>−<span><span>10a</span>b</span></span>+<span>3<span>b<span>2</span></span></span></span></span>
5 0
3 years ago
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