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Dvinal [7]
3 years ago
7

The width of a photograph is 4.5 in.less than the length. if the width is 9.2 in., what is the length

Mathematics
2 answers:
vredina [299]3 years ago
6 0
Add 4.5<span> and </span>9.2<span> to get </span><span>13.7.

</span>13.7

13.7 in. is the length
Taya2010 [7]3 years ago
6 0
W = L - 4.5
W = 9.2

9.2 = L - 4.5
9.2 + 4.5 = L
L = 13.7
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A waterfall has a height of 900 feet. A pebble is thrown upward from the top of the falls with an initial velocity of 24 feet pe
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Answer:

The pebble will hit the ground 8.29 second after it is thrown.

Step-by-step explanation:

Given that,

The height of the pebble after t seconds is given by the equation

h= -16t²+24 t+900.

When the pebble hit the ground, the height of the pebble will be zero.

So putting h=0 in the given equation.

0 = -16t²+24 t+900

⇒-4(4t²-6t-225)=0

⇒4t²-6t-225=0

Applying quadratic formula t=\frac{-b\pm\sqrt{b^2-4ac}}{2a}, here a=4, b= -6 and c= -225.

\therefore t=\frac{-(-6)\pm\sqrt{(-6)^2-4.4.(-225)}}{2.4}

⇒ t = 8.29, -6.79

Since time can not negative.

∴t=8.29 seconds.

The pebble will hit the ground 8.29 second after it is thrown.

7 0
3 years ago
Quick please I really need this
Kipish [7]

Answer:

y = 39

Step-by-step explanation:

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OlgaM077 [116]

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Step-by-step explanation:

d

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"Find four numbers proportional to the numbers 2, 4, 5, and 6 if the difference between the sum of the two last numbers and the
Liono4ka [1.6K]

Answer:

  1.92, 3.84, 4.8, 5.76

Step-by-step explanation:

In the given set, the sum of the last two numbers is 5+6 = 11; the sum of the first two numbers is 2+4 = 6. The difference between these sums is 11-6 = 5.

You want to scale all the numbers by a factor of 4.8/5 = 0.96 so that the difference computed the same way is 4.8 instead of 5.

Then the numbers are ...

  0.96{2, 4, 5, 6} = {1.92, 3.84, 4.8, 5.76}

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3 years ago
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