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bixtya [17]
2 years ago
8

URGENT PLEASE HELP‼️‼️

Mathematics
1 answer:
MA_775_DIABLO [31]2 years ago
7 0

Answer:

im sorry this looks difficult

my homework is the same

Step-by-step explanation:

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The equation y 16t 2 18t 405 describes the height in feet of a ball thrown downward at 18 feet per second from a height of 405 f
kumpel [21]

Answer:

Ball hits the ground after 4.5 sec

Step-by-step explanation:

Let a -1, so that the leading coefficient is positive

So our quadratic is

-1 \times (16t^2 +18t -405)

The key coefficients of two binomial variables can be 1 and 16, or 2 and 8, or 4 and 4, for the leading coefficient of 16.

Yet they can't actually be 4 and 4 because the linear (x) term coefficient has to be a multiple of 4, which it isn't and leading coefficients 1 and 16 on the binomial factors is not likely.

So, 2 and 8 taken as the leading coefficients of  two binomial factors.

For constant  405, possible factorizations are (81\times 5, 27 \times 15, 9 \times 45).

(16t^2 +18t -405) = (8t + 45) (2t - 9)

Taking first factor, thus we find  negative value for given time t. But  second time equivalent to zero gives the value of 4.5 for t

Thus ball hits the ground after 4.5 sec

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3 0
3 years ago
A donut shop requires customers to spend at least $4 in order to use their debit card to pay for a purchase. Maya wants to buy a
Anuta_ua [19.1K]

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x+$1.20 ≥ $4

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Answer:

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Step-by-step explanation:

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