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AlladinOne [14]
3 years ago
6

The display gives the result of performing a quadratic regression on a data set where the inputs are speeds in miles per hour an

d the outputs are the corresponding braking distances in feet. What is the stopping distance for a vehicle traveling at 20 mph?

Mathematics
1 answer:
alina1380 [7]3 years ago
7 0
Y = a x² + b x + c
y = 0.0473809524 · 20² + 2.221428571 · 20 - 0.005952381 = 
= 18.95236 + 44.42875 - 0.05952381 = 63.374978 ≈ 63.4
Answer: C ) 63.4 ft.
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The graph of g(x) is obtained by reflecting the graph of f(x)=2|x| over the x-axis.
Lera25 [3.4K]
Answer: Choice C) 
g(x) = -|2x|

You get this answer by simply sticking a negative out front of the original function. In other words, g(x) = -f(x) or more technically, g(x) = -1*f(x).

The negative will flip every y coordinate from positive to negative (or vice versa)

You'll also use the idea that |2x| = 2|x|. The two can be pulled out since we can say |x*y| = |x|*|y|
So |2*x| = |2|*|x| = 2|x|

4 0
3 years ago
A circus audience sits in rows around the performing ring. There are 9 seats in each row. How many rows will need to be set up i
DENIUS [597]

Answer:

57 rows

Step-by-step explanation:

Since each row will have a total of 9 seats, then we would simply need to divide the total number of individuals that will attend the show by 9 in order to calculate the number of rows that need to be set up around the performing ring.

513 / 9 = 57 rows

Therefore, we can see that we would need a total of 57 rows of 9 chairs each in order for there to be enough chairs to seat 513 people.

5 0
3 years ago
A chocolate company makes chocolate malt balls that have a radius of 0.34
IceJOKER [234]

Answer:

<h2>Approximately 141 malt balls</h2>

Step-by-step explanation:

this problem is on the mensuration of solids shapes.

first we need to calculate the volume of the rectangular prism

volume of prsim= l*b*h

given that

length= 1.5 in

breath=2.5 in

hieght= 6 in

volume= 1.5*2.5*6

volume=22.5 in^3

secondly we then calculate the volume of a malt ball

given that

raduis r= 0.34

volume of sphere = 4/3πr^3

volume of sphere = 4/3*3.124*(0.34)^3

volume of sphere = 1.33*3.142*0.039

volume of sphere = 0.16 in^3

now we can calculate the amount of sphere that can fit into the prism as

= volume of prism/volume of sphere

= 22.5/0.16

=140.6

approximately 141 malt balls

3 0
3 years ago
Find hcf and lcm of algebraic terms 3pqr, 24pr², 30pq²r²​
Snezhnost [94]

ok fine I have sent this question to algebra calculator site they will send u notif on ur phoen with answer

4 0
3 years ago
Read 2 more answers
Can any one help with this
natka813 [3]

Answer:

I know this isn't the whole answer but basicely just keep doing this to find the y-incercept

slope=-2.46

Hope This Helps!!!

4 0
3 years ago
Read 2 more answers
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