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3 years ago

Find the slope of each of the lines below:

Mathematics

2 answers:

KiRa [710]3 years ago

7 0

The answers is -1/3 because of rise over run

velikii [3]3 years ago

7 0

Answer: 3/10x

Step-by-step explanation:

(-4,-2) ( 6,1 )

The points are given by the graph and can be used to find the slope

using the slope formula

y2-y1 over

x2-x1

-2-1

-4-6 = 3/10

The result can't be simplified so

the slope is 3/10x

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3 years ago

The height of an object tossed upward with an initial velocity of 120 feet per second is given by the formula h = −16t2 + 120t,

AleksAgata [21]

Answer:

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Step-by-step explanation:

$h = - 16 {t}^{2} + 120t \\ \because \: we \: have \: to \: find \: the \: time \: required \: \\ for \: the \: object \: to \: return to \: its \: \\ point \: of departure. \\ \therefore \: plug \: h = 0 \: in \: the \: given \: euation. \\ \therefore \: 0 = - 16 {t}^{2} + 120t \\ \therefore \:16 {t}^{2} - 120t = 0 \\ \therefore \:8t(2t - 15) = 0 \\ \therefore \:8t = 0 \: \: or \: \: (2t - 15) = 0 \\ \therefore \:t = \frac{0}{8} \: or \: t = \frac{15}{2} \\ \therefore \:t = 0 \: or \: t = 7.5 \\ \because \: t = 0 \: is \: not \: possible \\ \huge \purple{ \boxed{ \therefore \: t = 7.5 \: seconds}}$

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