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Basile [38]
3 years ago
12

Vanya drove 405 miles in 9 hours. Chuy drove 350 miles in 7 hours. Alfredo drove 330 miles in 6 hours. Who was driving at the fa

stest speed? (fastest MPH/ fastest Unit Rate
Mathematics
1 answer:
Novosadov [1.4K]3 years ago
7 0

Answer:

350 miles in 7 hours

Step-by-step explanation:

  1. find

if 9=405

1=v(represent with a variable

2. do the same for the others and select the highest number

You might be interested in
Determine whether the graphs of the two equations are perpendicular x-7y=4 and 21x+3y=11
Sveta_85 [38]

Step-by-step explanation:

when multiplied together, the gradients of the 2 graphs should equal -1 (of they are perpendicular).

x-7y=4

-7y= -x + 4

y= -1/7 x + 4/7

21x+ 3y=11

3y=-21x+11

y=-21/3 x + 11/3

-21/3 * -1/7 = 1

when multipled together, the 2 gradients dont equal -1 therefore they are not perpendicular

unless I've made a mistake with the signs at some point haha

3 0
3 years ago
the angle of elevation of the top of a tower from a certain point is 30 . if the observer moves 20m towords the tower, the angle
castortr0y [4]
The <span>height of the tower. is  27 m

Now, we write h/x = tan 45
i.e h/x = 1 
i.e h = x        ...........................1.

Now, h/(x+20) = tan 30
i.e </span> (x+20)/h = 1/tan 30

or (x+20) = 1.73h
or from equation 1 , 
h+ 20 = 1.73 h
20 = 1.73h - h
h = 20/0.73
or h = 27.39 = 27 m

3 0
3 years ago
7. I sell cookies for $2 and muffins for $5. Yesterday, I made $35. I sold a total of 13 items.
ki77a [65]
You sold 10 cookies and 3 muffins.
3 0
3 years ago
Read 2 more answers
Given a polynomial function f(x) = 2x2 – 3x + 5 and an exponential function g(x) = 2% – 5, what key features do f(x) and g(x) ha
prohojiy [21]

A. Both f(x) and g(x) have the <em>same</em> domain of (9, +\infty).

<h3>How to analyze similarities in two functions</h3>

In this question we must analyze the domain, range, x-intercepts and <em>increase</em> intervals:

<h3>Domain</h3>

Dom \{f(x)\} = \mathbb{R}

Dom \{g(x)\} = \mathbb{R}

Both functions are <em>continuous</em>.

<h3>Range</h3>

Ran \left\{f(x)\right\} = (3.875, +\infty)

Ran \{g(x)\} = (-5, +\infty)

<h3>x-Intercepts</h3>

f(x): (x,y) = \emptyset

g(x): (x,y) = (2.322, 0)

<h3>Increase intervals</h3>

f(x): According to the graph, f(x) increase over the interval of (3.875, + \infty).

g(x) : According to the graph, g(x) increase over the interval of \mathbb{R}

After a quick analysis, we conclude that option A offer the best approximation to characteristics of both functions. \blacksquare

<h3>Remark</h3>

The statement presents mistakes and is poorly formatted. Correct form is:

<em>Given a polynomial function </em>f(x) = 2\cdot x^{2}-3\cdot x + 5<em> and an exponential function </em>g(x) = 2^{x}-5<em>. What key features do </em>f(x)<em> and </em>g(x)<em> have in common? </em>

<em />

<em>A.</em><em> Both </em>f(x)<em> and </em>g(x)<em> have the same domain of </em>(9, +\infty)<em>.</em>

<em>B.</em><em> Both </em>f(x)<em> and </em>g(x)<em> have the same range of </em>(-\infty, 0]<em>.</em>

<em>C.</em><em> Both </em>f(x)<em> and </em>g(x)<em> have the same x-intercept of </em>(2,0)<em>.</em>

<em>D.</em><em> Both </em>f(x)<em> and </em>g(x)<em> increase over the interval of </em>(-4, +\infty)<em>.</em>

<em />

To learn more on functions, we kindly invite to check this verified question: brainly.com/question/5245372

4 0
2 years ago
34)
Novay_Z [31]
<span>Answer: A) 5 + 3.5x = 3 + 4x, x = 4
 </span><span>
The Bowling Pin charges $5 for shoe rental and $3.50 per game. The shoe should be fixed, but the price for playing depends on how many games played.
The function would be: </span>5 + 3.5x<span>

The Alley Way charges $3 for shoe rental and $4 per game. </span>The shoe should be fixed, but the price for playing depends on how many games played.
The function would be: 3 + 4x

The break even point would be: 
5 + 3.5x= 3+4x
5-3= 4-3.5x
2= 0.5x
x=4
7 0
4 years ago
Read 2 more answers
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