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ZanzabumX [31]
3 years ago
14

The height in feet (h) of the ball t seconds after it is released can

Mathematics
1 answer:
Burka [1]3 years ago
5 0

Step-by-step explanation:

h = -16t² + 10t + 6

When h = 0, -16t² + 10t + 6 = 0.

=> -8t² + 5t + 3 = 0

=> (-8t - 3)(t - 1) = 0

=> t = 1 or t = -3/8 (rejected as time cannot be negative)

Hence 1 second passed before the ball hits the ground.

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Find the value of x.
Alisiya [41]

\huge\bold{To\:find:}

✎ The value of x.

\large\mathfrak{{\pmb{\underline{\orange{Solution}}{\orange{:}}}}}

\sf\purple{The\:value\:of\:x\:is\:10°. }

\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\orange{:}}}}}

Since it is right angle,

Sum \: of \: angles \:  =  90° \\ ⇢ 2x °+ 7x°  =90 °  \\ ⇢9x° = 90° \\ ⇢x° =  \frac{90°}{9}  \\ ⇢x° = 10°

\sf\blue{Therefore,\:the\:value\:of\:x\:is\:10°.}

\huge\bold{To\:verify :}

2x° + 7x°  = 90°  \\ ➡ \: 2 \times 10°  +7 \times 10°  = 90°  \\ ➡ \: 20°  + 70°  = 90°  \\ ➡ \: 90°  = 90°  \\  ➡ \: L.H.S.=R. H. S

Hence verified.

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6 0
3 years ago
I’m being timed can I get these answers‼️
Katarina [22]

Answer:

1.) variable

2.)26

Step-by-step explanation:

I don't have time to explain deeply sorry.

1. I just know it lol

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8 0
4 years ago
The sum of three decimal numbers is 6. Exactly one of the numbers is less than 1. What could the numbers be?
kolezko [41]
You could do     0.9     1.6     3.5      dont know of thats what you ment but they all have decimals :)
8 0
4 years ago
Hello! May someone please help on this :)<br> I would probably give brainliest.
ivanzaharov [21]

Answer:

theres 16 doughnuts

Step-by-step explanation:

6 0
3 years ago
Rick's lumberyard has 360 yd of fencing with which to enclose a rectangular area. If the enclosed area is x yards​ long, express
cestrela7 [59]

Answer:

180x - x²

Step-by-step explanation:

Since the yard has 360 yd. of fencing, hence the perimeter of Rick's lumberyard has 360 yd.

Given that the yard is x yards long. Let y represent the width of the yard. Hence:

Perimeter of the yard = 2(length + width) = 2(x + y)

Substituting:

360 = 2(x + y)

180 = x + y

y = 180 - x

Therefore the width of the yard is (180 - x) yard.

The area of the yard is the product of the length and the width, hence:

Area (A) = length * width

A = x * (180 - x)

A = 180x - x²

3 0
3 years ago
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