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aalyn [17]
2 years ago
9

A city has a 5% sales tax. Is there a proportional relationship between the cost of items before tax and the cost of items after

tax?
If yes, what's the COP?
If no, then explain why.

(20 points being given)
Mathematics
1 answer:
andre [41]2 years ago
5 0

Answer:

I don't know it to be honest but I'm curious now

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3. 'a' and 'b' are the intercepts made
Julli [10]

Given:

'a' and 'b' are the intercepts made  by a straight-line with the co- ordinate axes.

3a = b and the line  pass through the point (1, 3).

To find:

The equation of the line.

Solution:

The intercept form of a line is

\dfrac{x}{a}+\dfrac{y}{b}=1         ...(i)

where, a is x-intercept and b is y-intercept.

We have, 3a=b.

\dfrac{x}{a}+\dfrac{y}{3a}=1           ...(ii)

The line  pass through the point (1, 3). So, putting x=1 and y=3, we get

\dfrac{1}{a}+\dfrac{3}{3a}=1

\dfrac{1}{a}+\dfrac{1}{a}=1

\dfrac{2}{a}=1

Multiply both sides by a.

2=a

The value of a is 2. So, x-intercept is 2.

Putting a=2 in b=3a, we get

b=3(2)

b=6

The value of b is 6. So, y-intercept is 6.

Putting a=2 and b=6 in (i), we get

\dfrac{x}{2}+\dfrac{y}{6}=1

Therefore, the equation of the required line in intercept form is \dfrac{x}{2}+\dfrac{y}{6}=1.

5 0
3 years ago
Ron has 25 coins with a total value of $ 4.30 . the coins are dimes and quarters. how many of each coin does he have?
Gwar [14]
25=d+q
4.30= .1d + .25q

25=d+q
-17.20=-.4d+-q

7.80= .6d
d=13...... 13 DIMES

25= 13+q
12=q....... 12 QUARTERS
4 0
3 years ago
If 1 + + 2 + 3 = 60, then the average (arithmetic mean) of , 2 , 3 , and 4 is equal to what
Zielflug [23.3K]

Step-by-step explanation:

1x+2x+3x=60

x=10

2x+3x+4x=20+30+40=90

average=90÷3=30

3 0
3 years ago
If i had to pay 3,500 dollars but I had a 69% off coupon for some reason how much would I have to pay also please show me how yo
zalisa [80]

Answer:

1085

Step-by-step explanation:

100 - 69 =31%

3500 /100 =35

35 x 31 = 1085

5 0
3 years ago
Read 2 more answers
Find the measure of Angle Q.
Grace [21]

Answer:

q=130

hope this will help

5 0
2 years ago
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