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3 years ago

Please help will mark brainliest

Mathematics

2 answers:

rewona [7]3 years ago

4 0

Answer: 1 7/16

Step-by-step explanation: If you look at a ruler 1 7/8 is just a little behind 1 7/16 while 1 3/4 is far behind. Also 2 1/8 is past where the green line stops.

Paha777 [63]3 years ago

3 0

Answer:

option 1) 1 7/8"

Step-by-step explanation:

its clearly visible that the green line covers 1 unit completely.

but it stops before it can reach 2 units.

check the attachment

"mid point" is the mid point of 1 and 2 units

it will be at a distance of 1/ 2 units from the "unit 1".

( since 1 and 2 are 1 unit apart their mid point will lie exactly at rhe center that is 1/ 2 = 0.5)

"second mid point" is the mid point of "mid point" and "unit 2".

since the "mid point" is at a distance of 0.5 units from "unit 2", second mid point will be at a distance of (1/ 2)/ 2 = 1/ 4 units from "mid point".

now, third mid point is the mid point of "second mid point" and "unit 2"

since they're 1/ 4 units apart the third mid point will be (1/ 4)/2 units away from "second mid point"

and this is where the green line stops!

we got these points now well just add them up, to get the distance of required point from unit 1.

1/ 2 + 1/ 4 + 1/ 8

= 7/ 8

and this is in centimeters so add a " after it

1 7/ 8"

that is option 1.

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3 years ago

Sean tossed a coin off a bridge into the stream below. The path of the coin can be represented by the equation 2 h tt = − 16t^2+

tekilochka [14]

Answer:

It will take 5.61 seconds for the coin to reach the stream.

Step-by-step explanation:

The height of the coin, after t seconds, is given by the following equation:

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How long will it take the coin to reach the stream?

The stream is the ground level.

So the coin reaches the stream when h(t) = 0.

$h(t) = -16t^{2} + 72t + 100$

$-16t^{2} + 72t + 100 = 0$

Multiplying by (-1)

$16t^{2} - 72t - 100 = 0$

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

$ax^{2} + bx + c, a\neq0$ .

This polynomial has roots $x_{1}, x_{2}$ such that $ax^{2} + bx + c = a(x - x_{1})*(x - x_{2})$ , given by the following formulas:

$x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a}$

$x_{2} = \frac{-b - \sqrt{\bigtriangleup}}{2*a}$

$\bigtriangleup = b^{2} - 4ac$

In this question:

$16t^{2} - 72t - 100 = 0$

$a = 16, b = -72, c = -100$

$\bigtriangleup = (-72)^{2} - 4*16*(-100) = 11584$

$t_{1} = \frac{-(-72) + \sqrt{11584}}{2*16} = 5.61$

$t_{2} = \frac{-(-72) - \sqrt{11584}}{2*16} = -1.11$

Time is a positive measure, so we take the positive value.

It will take 5.61 seconds for the coin to reach the stream.

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3 years ago

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3 years ago

Read 2 more answers

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Answer:

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Step-by-step explanation:

Hi there!

What we need to know:

Linear equations are typically organized in slope-intercept form: $y=mx+b$ where m is the slope and b is the y-intercept (the value of y when x is 0)
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1) Determine the slope of line S using line R (m)

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