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3 years ago

Which sentence uses coordinate adjectives?

Mathematics

1 answer:

Salsk061 [2.6K]3 years ago

6 0

The correct answer should be A) because the adjectives are water and ice and they're describing the glass.

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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:

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

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.

3 0

3 years ago

What is the unit rate of 3 accidents in 12 months

Wewaii [24]

Simplify 3 to 12 Divide 3 1 to 4 So the answer is 1 car accident in 4 month ~JZ Hope it helps you out there

7 0

3 years ago

Read 3 more answers

The width of a golden rectangle is 15 feet. Find the perimeter of the rectangle to the nearest foot.

topjm [15]

Answer:

79 ft

Step-by-step explanation:

Golden rectangle side ratios 1 : (1+sqrt5 )/2

(approx 1: 1.618)

15 + 15 + 2*15*1.618 = <u>~79 ft </u>

BUT perhaps the 15 is the 1.618 side

15/1.618 + 15/1.618 + 15 + 15 ~ 49 feet

3 0

2 years ago

(2n4 - 13n3 + 32n2 – 51n – 54) = (2n – 9)

Bezzdna [24]

Answer:

2n-9

Step-by-step explanation:

7 0

2 years ago

Solve for m<br>practice test

svlad2 [7]

Answer:M= 1.24

Step-by-step explanation:2m + 1.24 = 3.6

M = 1.24

7 0

3 years ago