3 years ago

EASY! WILL MARK BRAINEST!! What is f(3) for the function f(x)=7x+5

Mathematics

1 answer:

Debora [2.8K]3 years ago

6 0

Answer:

26 is the answer

Step-by-step explanation:

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The equation y 4.9t 2 3.5t 2.4 relates the height y in meters to the elapsed time t in seconds for a ball thrown downward at 3.5

tamaranim1 [39]

Answer:

$t \approx 0.43\,s$

Step-by-step explanation:

The vertical displacement function is $y(t) = -4.9\cdot t^{2}-3.5\cdot t + 2.4$ , where $y(t)$ is measured in meters and $t$ in seconds. Ball hits the ground when $y(t) = 0$ . That is:

$-4.9\cdot t^{2}-3.5\cdot t + 2.4 = 0$

Whose roots can be found by using the General Formula for Second-Order Polynomials:

$t_{1,2} = \frac{3.5\pm \sqrt{(-3.5)^{2}-4\cdot (-4.9)\cdot (2.4)} }{2\cdot (-4.9)}$

Solutions of this polynomial are:

$t_{1} \approx 0.43\,s,t_{2} \approx -1.14\,s$

Only the first root is physically consistent.

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3 years ago

Find the product. (-4·3·2)2 -48 48 -576 576

VLD [36.1K]

(-4*3*2)^2 = (-24)^2 = 576

hope this will help you

5 0

3 years ago

Read 2 more answers

Bags of sweets cost £3.75

Pachacha [2.7K]

The answer would be rounded by 7

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3 years ago

PLEASE HELP!! I'll make brainliest

Gekata [30.6K]

Sorry people send you links instead of actually helping you

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3 years ago

Solve for p P-17=2p+3

Y_Kistochka [10]

Answer:

-20

Step-by-step explanation:

P-17=2P+3

P-2P=17+3

-P=20

Divide both sides by negative 1

P=20

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3 years ago