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3 years ago

72 is equal to 80% of a number n. Write and solve and equation to find n. Write the percent as a decimal.

Mathematics

1 answer:

Deffense [45]3 years ago

4 0

I'm pretty sure the answer is 90 = n decimal 0.8

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I need help with this problem! Thank you!

QveST [7]

Answer:

The amount of water in the reservoir at the beginning of second week

$w_{2} = 299.8800$

Step-by-step explanation:

Step(i):-

Given equation

w₀ = 300 and

$w_{n} = (0.9993) w _{n-1} + 0.15$

Put n =1

$w_{1} = (0.9993) w _{1-1} + 0.15$

$w_{1} = (0.9993) w _{0} + 0.15$

$w_{1} = (0.9993) X 300 + 0.15$

$w_{1} = 299.94$

Step(ii):-

Put n =2

$w_{2} = (0.9993) w _{2-1} + 0.15$

$w_{2} = (0.9993) w _{1} + 0.15$

$w_{2} = (0.9993) X (299.94) + 0.15$

$w_{2} = 299.8800$

Conclusion:-

The amount of water in the reservoir at the beginning of second week

$w_{2} = 299.8800$

3 0

3 years ago

In 1990 sales at ABC electronics totaled 4.9 million dollars 1996 total sales amounted to 12.1 million. Assuming the growth in s

Leto [7]

Answer:

18.1 million

Step-by-step explanation:

12.1 - 4.9 = 7.2 million increase in 6 years

7.2 / 6 = increase of 1.2 million a year

1.2 x 5 years = 6 million

12.1 million + 6 million = sales of 18.1 million in 2001

3 0

2 years ago

Quick question a lot of points help please

dybincka [34]

the right answer to the question is catch me on the root mean square velocity of gas molecule when measured by galvanometer to produce circular egg in the presence of light under blanket.

5 0

3 years ago

Simplify the algebraic expression: 16 - 4(3x - 5)

swat32

Step-by-step explanation:

16 - 4(3x - 5)

16 - 12x + 20

12x = 16 + 20

12x = 36

x = 36/12

x = 3

3 0

2 years ago

Read 2 more answers

When 12 is added to a number the result is 32 less than 3 times a number. What is this number?

neonofarm [45]

X - the number

$x+12=3x-32 \\
x-3x=-32-12 \\
-2x=-44 \\
x=\frac{-44}{-2} \\
x=22$

The number is 22.

7 0

2 years ago

Read 2 more answers