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marysya [2.9K]
3 years ago
10

What is 3r + n^2 + 3n + r + 5 + 2n + 2 simplified?

Mathematics
2 answers:
rusak2 [61]3 years ago
8 0
Answer:
The answer is 4r+n^2+5n+7
erastovalidia [21]3 years ago
3 0

Answer: n^2+5n+4r+7

Step-by-step explanation:

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Two buses leave a station at the same time and travel in opposite directions. One bus travels 15 mph faster than the other. If t
Artemon [7]

Answer:

46 mph and 61 mph

Step-by-step explanation:

Distance=speed*time

Let speed of one bus be x and another x+15

After 3 hours

First bus would have traveled 3x while second bus 3(x+15)=3x+45

Total distance= 3x+3x+45=6x+45

6x+45=321

6x=321-45=276

x=276/6=46 mph

x+15=46+15=61 mph

4 0
3 years ago
Find the 8th term of the geometric sequence 10,-40, 160, ...
Mars2501 [29]

Answer:

-163,840

Step-by-step explanation:

Because the pattern is -4 you just multiply it through until you get to the 8th term. ;)

5 0
3 years ago
kimmys savings account has a balance of $76.23 in june.by september, her balance is 5 times as much as her june balance.between
nalin [4]
From the information you have given me, I would say Kimmy has $<span>468.98 </span>dollars in her bank account.

Does she get more money during the other months, just as she had gotten 5 times as much as she had in a 3 month span? (From june to september.) All I could tell was her money was multiplied by 5, then you add $87.83 more into her account.

Please check my math if you want to be sure.
$76.23 * 5 = $381.15
$381.15 + 87.83 = 468.98
4 0
3 years ago
What is the equation of the parabola in vertex form with vertex (2,-4) and directrix y=-6​
Pachacha [2.7K]

Answer:

y=\dfrac{1}{8}(x-2)^2-4

Step-by-step explanation:

The directrix y=-6 is parallel to the x axes, so parabola has equation of the form

(x-x_0)^2=2px(y-y_0),

where (x_0,y_0) is the vertex of parabola and p is parabola's parameter.

By the definition, \frac{p}{2} is the distance from the vertex to the directrix, so

\dfrac{p}{2}=2\Rightarrow p=4

Hence, the equation of parabola is

(x-2)^2=8(y+4)

See attached diagram for the graph of parabola and its directrix.

In vertex form this equation is

y=\dfrac{1}{8}(x-2)^2-4

8 0
3 years ago
Lsabelle bought 12 bottles of water at 2 each
schepotkina [342]
24 because 12 times 2 is equal to 24                                                                                                                                                                                             
4 0
3 years ago
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