3 years ago

Help 20 points btw............

Mathematics

1 answer:

Nadya [2.5K]3 years ago

3 0

You would do base times height

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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.

3 0

3 years ago

Find the distance between the points: (3, 2) and (9, 7)

sesenic [268]

hope this will help u...:)

5 0

3 years ago

A line has the same slope as the line 3x+9y=5 and passes though the point (-1,2).what is the equation of the line?

MrRissso [65]

Answer:

y = -1/3x + 5/3

Step-by-step explanation:

First solve the equation. Simply put it is y = -1/3x + 5/9.

So, we have our slope which is -1/3. Now just plug it in.

y - y1 = m(x - x1)

y - 2 = -1/3(x - (-1))

Distribute.

y - 2 = -1/3x - 1/3

Add 2 to both sides

you get y=-1/3x + 5/3

6 0

3 years ago

Answer worth 50 points

bulgar [2K]

The answer to this expression is 2

6 0

3 years ago

Read 2 more answers

The original price of a blender is $18.00. If the blender is discounted 25%, what is the new price?

Ivanshal [37]

Answer:

$4.50

Step-by-step explanation:

Please give brainliest!!

6 0

3 years ago