Sam created a porch that was part wooden and part concrete, as shown in the figure below.

For the given equation, find the values of a, b, and c, determine the direction in which the parabola opens, and determine the y

mariarad [96]

Answer:

Table A

Step-by-step explanation:

y = 3x^2 +2x -8

The quadratic is in the form

y = a x^2 +bx+c

a = 3 b = 2 c = -8

Since a > 0 it opens up

The y intercept is c so the y intercept is -8

7 0

3 years ago

The 1992 world speed record for a bicycle (human-powered vehicle) was set by Chris Huber. His time through the measured 200 m st

Reil [10]

Answer:

a) 30.726m/s and b) 5.5549s

Step-by-step explanation:

a.) What was Chris Huber’s speed in meters per second(m/s)?

Given the distance and time, the formula to obtain the speed is

$v=\frac{d}{t}$ .

Applying this to our problem we have that

$v=\frac{200m}{6.509s}= 30.726m/s$ .

So, Chris Huber’s speed in meters per second(m/s) was 30.726m/s.

b) What was Whittingham’s time through the 200 m?

In a) we stated that $v=\frac{d}{t}$ . This formula implies that

$t=\frac{d}{v}$ .

First, observer that $19\frac{km}{h} =19,000\frac{m}{h}=\frac{19,000}{3,600}m/s= 5.2777m/s$ .

Then, Sam Whittingham speed was equal to Chris Huber’s speed plus 5.2777 m/s. So, $v=30.726\frac{m}{s} +5.2777\frac{m}{s}= 36.003 m/s.$

Then, applying 1) we have that

$t=\frac{200m}{36.003m/s}=5.5549s.$

So, Sam Whittingham’s time through the 200 m was 5.5549s.

5 0

3 years ago

Rewrite in simplest terms: 9(m-9)-4(10m+2)9(m−9)−4(10m+2)

trasher [3.6K]

The required simplified expression for 9(m - 9) - 4(10m + 2) is -31m - 90.

Given that,
To rewrite in simplest terms: 9(m-9)-4(10m+2).

<h3>What is simplification?</h3>

The process in mathematics to operate and interpret the function to make the function simple or more understandable is called simplifying and the process is called simplification.

Question asked to simplify the term 9(m-9)-4(10m+2).

= 9(m - 9) - 4(10m + 2)
= 9m - 81 - 40m - 8
= -31m - 90

Thus, the required simplified expression for 9(m - 9) - 4(10m + 2) is -31m - 90.

Learn more about simplification here: brainly.com/question/12501526

#SPJ1

7 0

2 years ago

16+ (-26) = -10<br> 9.-16+(-4)<br> - 16+(-4)=<br> 12<br> 3-(4)

Stels [109]

Answer:

The answer is -1.

Step-by-step explanation:

It is a little messy tho. I will assume that you want 3-(4)

6 0

3 years ago

Suppose a triangle has sides a, b, and c, and let theta be opposite the side of length a. If cos theta < 0, what must be true

katrin2010 [14]

If $\cos \theta\ \textless \ 0$ , then angle $\theta$ is obtuse and triangle with sides a, b, c is obtuse triangle.
In an arbitrary triangle can be only one obtuse angle, and the side which lies opposite to the largest angle is the largest. Then since <span>angle $\theta$ is opposite the side of length a</span> you can conclude that a>c and a>b.

6 0

3 years ago