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castortr0y [4]
3 years ago
6

How do you do this? Thanks for your time and effort! Plz help:)))))) THANKSSSSS

Mathematics
1 answer:
Nitella [24]3 years ago
4 0
R=-1/800(x^2-2400x)
use R'=0
R'=1/400x-300, 1/400x=300 => x=1200 critical point
take R(1200), we know its max bcuz of the orientation of R
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If a car travels 48 miles per hour, ABOUT how many miles does it travel in 5 hours?<br><br> Thanks!!
zimovet [89]
240, just multiply 48 by 5
5 0
2 years ago
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401(k) accounts are those that are partially funded by employers using a portion of wages before tax: true or false?
olga nikolaevna [1]

Answer:

FALSE

Step-by-step explanation:

It is false because 401(k) accounts are not funded by employer's wages but  <em>employees' </em>wages ; the latter voluntarily make contributions to a retirement account that is taken out of their wages before taxes . Employers on the other hand may partially or fully match a portion of these contributions.

7 0
3 years ago
How do I solve this?
Oliga [24]
×=4 since you divide 3 and 12 by 3
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2 years ago
A plane travels at a constant speed. It takes 6 hours to travel 3360 miles.
ivolga24 [154]

Answer:

A-560

B-5600

Step-by-step explanation:

to find the answer for A we need to divide 3360 by 6 which gives us 560.

check: 560 x 6 = 3360

To find the answer for B we need to multiply the answer for A (560) by 10 which gives us 5600

3 0
3 years ago
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Kevin is 333 times as old as Daniel. 444 years ago, Kevin was 555 times as old as Daniel. How old is Kevin now?
My name is Ann [436]

Let D be Daniel's present age, then we can represent Kevin's present age as 3D because Kevin is 3 times as old as Daniel.

We can write an expression for Daniel's age 4 years ago as D-4 and Kevin's age 4 years ago as 3D-4.

We are told that 4 years ago Kevin was 5 times as old as Daniel. We can write this information as:

3D-4=5\cdot(D-4)

Now let us solve our equation to find Daniel's present age.

3D-4=5D-20

-4+20=5D-3D

16=2D

D=\frac{16}{2}=8

Daniel's present age is 8 years. Now we will multiply 8 by 3 to get Kevin's present age as Kevin is 3 times old as Daniel.

\text{Kevin's present age}=8\cdot3=24

Therefore, Kevin is 24 years old now.  

8 0
2 years ago
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