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Aleks [24]
3 years ago
5

A newspaper charges a flat rate to place a 3-line ad in the classified section and then charges a per line fee for any additiona

l lines. Write an equation that gives
Mathematics
1 answer:
laiz [17]3 years ago
6 0
Let x equal the number of additional lines, z equal the charge per additional line, y equal the flat rate of 3 lines, and w the total price
since there is a flat rate of y for 3 lines you would put y
y
then since it charges a per line fee you can write z(x) to represent the total price of the additional lines.
finally you put it together to get y+z(x)=w
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Find
Westkost [7]

Answer:

dy/dx = -b/a cot α

Step-by-step explanation:

x² / a² + y² / b² = 1

Take derivative with respect to x.

2x / a² + 2y / b² dy/dx = 0

2y / b² dy/dx = -2x / a²

dy/dx = -b²x / (a²y)

Substitute:

dy/dx = -b²a cos α / (a²b sin α)

dy/dx = -b cos α / (a sin α)

dy/dx = -b/a cot α

8 0
3 years ago
In an 18-meter race between a tortoise and a hare, the tortoise leaves 23 minutes before the hare. The hare, by running at an av
seropon [69]
We know that:
time=distance/speed
if the tortoise speed is x m/min, then since 0.5 m/hr=1/120 m/min
18/x=23+18/(x+1/120)
solving for x we get:
x=0.08 m/min
speed of hare is:
(0.08+1/120)=0.088 m/min

6 0
3 years ago
I need help with this please​
aliya0001 [1]

Answer:

I’m not sure what that means but I think it’s the one with the blue

Step-by-step explanation:

8 0
3 years ago
How many minutes will it take five people to stack 250 chairs if each person can stack 20 chairs a minute
maria [59]
250/5 = 50.....so each person is stacking 50 chairs...

50/20 = 2.5 minutes....so it takes each person 2.5 minutes to stack 50 chairs.

so ur answer is 2.5 minutes
8 0
3 years ago
Read 2 more answers
Please help me with this and I need the work shown out please
givi [52]
Please note that you have to use the reason vert. opp. angles to find x, hope it helps:)

5 0
3 years ago
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