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Mnenie [13.5K]
3 years ago
11

The height h, in feet, of an acorn that falls from the a branch 80 feet above the ground depends on the time t, in seconds, sinc

e it has fallen. This represented by the rule h=80-16t^2
Mathematics
1 answer:
Vikki [24]3 years ago
8 0

Answer: We know that the acorn falls from the height of 25 feet above the ground, it means the initial time when it falls is t = 0. The time when it lands on the ground is t = 1.25

Step-by-step explanation: never mind

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Describe polynomial and its type with examples
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Answer:

In mathematics, a polynomial is an expression consisting of variables (also called indeterminates) and coefficients, that involves only the operations of addition, subtraction, multiplication, and non-negative integer exponents of variables. An example of a polynomial of a single indeterminate, x, is x^2 − 4x + 7.

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3 years ago
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Write an equation of the line through (-2, - 1) having slope<br> 8/7?
Usimov [2.4K]

Answer:

When slope and one point are known follow instructions on this page:

http://www.1728.org/distance.htm

Calculate "b" from this equation:

b = y -mx where "m" is the slope

We'll use the point given (-2, -1) for "x" and "y"

b = -1 -(8/7) * -2

b = -1 + 16/7

b = 9/7

then we enter "b" and the slope into this equation

y = 8/7x +9/7

y = 1.142857 x + 1.2857142857

Step-by-step explanation:

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3 years ago
Solve the following system of equations algebraically and check.<br><br> y=x^2+3x+4<br> y-x=7
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Y=x^2+3x+4
y-x=7

x^2+3x+4-x=7
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(factor) x^2+2x-3=0
(x+3)(x-1)=0
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(Plug x in for y)
Y= 1^2+3(1)+4
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In New York, state sales tax rates vary by county. In Allegany County, the sales tax rate is 8 1 2 %. a. A book costs $12.99, an
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Answer:

$ 2.30

Step-by-step explanation:

Given that the sales tax rate = 8\frac{1}{2}\%=8.5\%

The cost of the book is $ 12.99.

So, the tax on the book= 8.5% of 12.99

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So, the sales tax on the book is $ 1.10.

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So, the tax on the book= 8.5% of 39.99

= \frac {8.5}{100}\times 39.99

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So, the sales tax on the book is $ 3.40.

The difference of taxes on both the items = $ 3.40-$ 1.10=$ 2.30

So, the tax on the video game is $ 2.30 more than then tax on the book.

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D)16:30
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