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3 years ago

Can someone help please???

Mathematics

1 answer:

Anvisha [2.4K]3 years ago

7 0

A. 3.25 or 3 1/4
B. 2
C. .25 or 1/4
D. -.75 or -3/4
E. -2.25 or -2 1/4
F. -3.75 or -3 3/4

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steposvetlana [31]

Answer:

Its 6/3

Step-by-step explanation:

8 0

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:

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

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

4 years ago

Use the pattern below for questions 6 - 8.

Yuliya22 [10]

Answer:

See below

Step-by-step explanation:

The sequence given

6, 19, 58, 175

We see the pattern: triple the previous term plus 1

2) 19 = 6*3 + 1
3) 58 = 19*3 + 1
4) 175 = 58*3 + 1

Next two terms

5) 175*3 + 1 = 526
6) 526*3 + 1 = 1579

Following two terms

7) 1579*3 + 1 = 4738
8) 4738*3 + 1 = 14215

4 0

3 years ago

If JM = 5x – 8 and LM = 2x – 6, which expression represents JL?

Delvig [45]

The green line is LM
The red line is JM
The blue point is at the coordinates (2/3, -14/3)

you'll have to excuse the way my graph looks. my graphing application on my computer is weird

3 0

3 years ago

100000000000000000000000000000000000000000+53624785326348756348927563482564328965342875634289573264

Arlecino [84]

Answer:

5.3624785e+55

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers