NEED HELP ASAP, I WILL GIVE BRAINLIEST

Mathematics

2 answers:

Afina-wow [57]3 years ago

4 0

Answer:

i believe it is c

Step-by-step explanation:

took test on edge

posledela3 years ago

3 0

Answer:

Step-by-step explanation:

You might be interested in

Sam is observing the velocity of a car at different times. After two hours, the velocity of the car is 50 km/h. After six hours,

Alexeev081 [22]

Part A)

$\bf \begin{array}{ccllll}
hours(x)&velocity(y)\\
-----&-----\\
2&50\\
6&54
\end{array}\\\\
-------------------------------\\\\
\begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
% (a,b)
&({{ 2}}\quad ,&{{ 50}})\quad 
% (c,d)
&({{ 6}}\quad ,&{{ 54}})
\end{array}$

$\bf slope = {{ m}}= \cfrac{rise}{run} \implies 
\cfrac{{{ y_2}}-{{ y_1}}}{{{ x_2}}-{{ x_1}}}\implies \cfrac{54-50}{6-2}\implies \cfrac{4}{4}\implies 1
\\\\\\
% point-slope intercept
y-{{ y_1}}={{ m}}(x-{{ x_1}})\implies y-50=1(x-2)\\
\left. \qquad \right. \uparrow\\
\textit{point-slope form}
\\\\\\
y-50=x-2\implies \boxed{y-x=48}\impliedby 
\begin{array}{llll}
standard\\
form
\end{array}$

part B)

well, to graph a LINEar equation, since it's just a LINE, you simply need two points to graph a line, and since we know that y - x = 48.... if you want to know what's "y" when x = 7? or 7 hours, well

y - (7) = 48
y = 48 + 7
y = 55

so.. that's the point for the 7th hour, 7, 55, and you can pick any other point above, and graph it away.

6 0

3 years ago

A person on a moving sidewalk travels 21 feet in 7 seconds. The moving sidewalk has a length of 180 feet. How long will it take

Debora [2.8K]

Answer:

180/3 60 second

Step-by-step explanation:

21/7 = 3 feet per second

3 0

3 years ago

Read 2 more answers

Select all expressions that are equivalent to 3 x 5 − 6 x 4 y + 3 x 3 y 2 . A. 3 x 3 ( x − y ) 2 B. 3 x 3 ( x 2 − 2 x y + y 2 )