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Dmitry [639]
2 years ago
5

Cellus

Mathematics
1 answer:
mote1985 [20]2 years ago
4 0

Answer:

y = 6 when x = 18

Step-by-step explanation:

The appropriate formula for this direct proportion is y = kx, where k is the constant of proportionality.

We know y = 3 when x = 9:  3 = k(9)

This yields k = 3/9, or k = 1/3

Then the formula is y = (1/3)x

and when x = 18, y = (1/3)(18) = 6

y = 6 when x = 18

You might be interested in
If $500 is shared in the ratio 2:3:9 then the difference between the largest and the smallest shares is
madreJ [45]

Answer:

$250

Step-by-step explanation:

Total parts:

2+3+9 = 14

500/14 = 250/7

2×250/7 : 3×250/7 : 9×250/7

500/7 : 750/7 : 2250/7

The largest share is 2250/7, the smallest share is 500/7.

Find the difference.

2250/7 - 500/7 = 250

8 0
3 years ago
Read 2 more answers
If a person lnvests $120 at 8% annual interest, find the approximate value of the investment at the end of 5 years
Pie

Answer:

$176.3193692 or $176.32 (rounded to two decimal places)

Step-by-step explanation:

It is a compound interest, which means the interest accumulates on an initial amount each period.

The formula is A=P(1+R)^n

A= the total amount P=initial amount      R=rate   n=time (years)

P=$120   Rate= 8% or 0.08 (decimal)  n=5 (years)

A=120 (1+0.08)^2

A=120 (1.469328077)

A= 176.3193692

6 0
2 years ago
9
hjlf

Answer: uhh

Step-by-step explanation:

I really don’t know how to do it.

3 0
3 years ago
Suppose you earned 8t-3 on monday and 6t+5 dollars on tuesday. what were your total earnings? simplify your answer
Nadusha1986 [10]
Let
A=8t-3
B=6t+5

we know that
<span>total earnings=A+B
</span>so
total earnings=(8t-3)+(6t+5)------> (8t+6t)+(-3+5)------> (14t+2) <span>dollars

the answer is
</span>(14t+2) dollars<span>

</span>
6 0
3 years ago
Lots of point n brainliest SO help rq
nordsb [41]

Answer:

  • A. $6000

Step-by-step explanation:

Let the invested amount is x.

<u>Then the interest amount is:</u>

  • x*5*2.25/100 = 675
  • 0.1125x = 675
  • x = 675 / 0.1125
  • x = 6000

Correct choice is A

7 0
3 years ago
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