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Neporo4naja [7]
3 years ago
12

What is 4/5 - 3/9 in simplest form

Mathematics
2 answers:
Alekssandra [29.7K]3 years ago
8 0

Answer:

7/15

Step-by-step explanation:

Rasek [7]3 years ago
5 0

Answer:

7/15

Step-by-step explanation:

find a common denominator and then your able to subtract

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Danielle runs 1/5 of a mile in 4.5 minutes. if she continues at the same speed, how long will it take her to run two miles?
motikmotik
(1/5) / 4.5 = 2 / m....1/5 mile to 4.5 minutes = 2 miles to m minutes
cross multiply
(1/5)(m) = (2)(4.5)
1/5m = 9
m = 9 * 5/1
m = 45 minutes <===
4 0
3 years ago
Do the ratios 4/16 and 1/2 form a proportion?
REY [17]

Answer:

no

Step-by-step explanation:

6 0
2 years ago
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A plant will become invasive when the number of plants reaches​ 10,000. Model the situation with an exponential growth function.
sweet-ann [11.9K]
20,000 years hope this helped
3 0
3 years ago
You have some money in your wallet. You don't know the exact amount, but you think you have 60 dollars give or take 15 dollars.
Karolina [17]

Answer:

The least amount is 75 dollars.

The biggest amount is 125 dollars

Step-by-step explanation:

The absolute value function will help us determine a  range of possible values since we do not know the exact amount of money.

Defining the function.

Let x be the exact amount of money in my pocket, we can define the equation

And we know that the difference between the exact amount of money with 100 dollars must be either 25 dollars more than what we estimated, or 25 dollars less than the estimation.  So we can write:

We have a difference inside an absolute value, since we know the difference must be either +25 or -25.

Solving for x

Using the definition of absolute value we have

So if the inside of the absolute value is positive we have the first line of the piece-wise function, that is

Solving for x give us

If the inside of the absolute value is negative we have to use the second line of the piece-wise function definition

Solving for x give us

So the least amount of money in my pocket is 75 dollars and the biggest amount is 125 dollars.

6 0
2 years ago
Someone solve this question!!!??Thank you
Naddik [55]

Combing like terms you have 0.25k - k = -0.75k

and 1.5 - 3.5 = -2.0

The answer would be -0.75k - 2.0

7 0
3 years ago
Read 2 more answers
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