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satela [25.4K]
3 years ago
10

A race car travels 1,212 kilometers in 4 hours. What is the car's rate of speed.

Mathematics
1 answer:
Gemiola [76]3 years ago
6 0
303 kph is the answer
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Hiiiiiioo helpppp pleas I want to undertsand
Likurg_2 [28]
The answer is:  [C]:  " y = 3x + 1 " .
_____________________________________________________
Note:  By looking at the graph, we see that it passed through the point, " (0, 1) " (at the y-intercept).
_____________________________________________________
Consider choice:  [A]:  "y = 3x" ;  When "x = 0" ; what does "y" equal ?
→  y = 3x = 3(0) = 0 ; → "(0, 0)" is a solution; NOT "(0, 1)" ; so rule out "[A]" .
________________________________________________________
Consider choice:  [B]:  "y = 3x − 1" ;  When "x = 0" ; what does "y" equal ?
→  y = 3(0)−1 =0−1 = -1;  → "(0, -1)" is a solution; NOT "(0, 1)" ; so rule out "[B]" .
________________________________________________________
Consider choice:  [C]:  "y = 3x + 1" ;  When "x = 0" ; what does "y" equal ?
→  y = 3(0)+1 = 0+1 = 1;   → "(0, -1)" is a solution;  so "choice [C]" is possible.
________________________________________________________
Consider choice:  [D]:  "y = 3x² + 1"; When "x = 0" ; what does "y" equal ?
→  y = 3(0²)+1 = 0+1 = 1; → "(0, 1)" is a solution;  so "choice [D]" is possible.
________________________________________________________
However;  choice: [D]: is a parabola, not a line; so we determine that the correct answer is:  Choice [C]:  "y = 3x + 1" .
________________________________________________________
4 0
4 years ago
Read 2 more answers
Given f(x)=-x-4f(x)=−x−4, find f(4)f(4).
Lady bird [3.3K]

Answer:

1/4 or .25

Explanation

As for this specific question algebra is something I do in my head and skip many steps for however if you want to proof my answer it would be this.

-0.25-16*.25=-0.25-4

-0.25-4=-0.25-4

-4.25=-4.25

6 0
3 years ago
What is the sum of the numbers 24+40 as the product of their gcf and another sum
AnnZ [28]
This is really conusing
8 0
3 years ago
Please answer these question!! thank you!! :)
Aleks [24]

this made me realize how dumb I am

6 0
3 years ago
To prepare for a party, Mark buys a small bunch of balloons for $4.00 and
kakasveta [241]

Answer:

15

Step-by-step explanation:

4+3.85x=61.75

3.85x=57.75

x=15

6 0
3 years ago
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