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Amanda [17]
3 years ago
15

How to use multiplication to find a fraction that is equivalent to 3/5

Mathematics
1 answer:
jok3333 [9.3K]3 years ago
8 0

Answer:

the following are all equal

3/5 (x1)

6/10 (x2)

9/15 (x3)

12/20 (x4)

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Which values for x, y, and z satisfy the equation 7xy/z=28
nirvana33 [79]

Answer:

try x= 4z/y

Step-by-step explanation:

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3 years ago
Help with 5b please . thank you.​
Allushta [10]

Answer:

See explanation

Step-by-step explanation:

We are given f(x)=ln(1+x)-x+(1/2)x^2.

We are first ask to differentiate this.

We will need chain rule for first term and power rule for all three terms.

f'(x)=(1+x)'/(1+x)-(1)+(1/2)×2x

f'(x)=(0+1)/(1+x)-(1)+x

f'(x)=1/(1+x)-(1)+x

We are then ask to prove if x is positive then f is positive.

I'm thinking they want us to use the derivative part in our answer.

Let's look at the critical numbers.

f' is undefined at x=-1 and it also makes f undefined.

Let's see if we can find when expression is 0.

1/(1+x)-(1)+x=0

Find common denominator:

1/(1+x)-(1+x)/(1+x)+x(1+x)/(1+x)=0

(1-1-x+x+x^2)/(1+x)=0

A fraction can only be zero when it's numerator is.

Simplify numerator equal 0:

x^2=0

This happens at x=0.

This means the expression,f, is increasing or decreasing after x=0. Let's found out what's happening there. f'(1)=1/(1+1)-(1)+1=1/2 which means after x=0, f is increasing since f'>0 after x=0.

So we should see increasing values of f when we up the value for x after 0.

Plugging in 0 gives: f(0)=ln(1+0)-0+(1/2)0^2=0.

So any value f, after this x=0, should be higher than 0 since f(0)=0 and f' told us f in increasing after x equals 0.

8 0
2 years ago
Janet completed this entire column of math homework in 10 minutes. How many seconds per question did Janet spend?
puteri [66]

Answer:

Assuming that Janet spent an equal amount of time on each question, he would have spent 75 seconds on each question.

Step-by-step explanation:

10 minutes = 600 seconds

600 seconds / 8 questions = 75 seconds.

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3 years ago
Write the following using index notation<br><br>2 x 9 x 9 x 9 x 2 x 9​
taurus [48]
9^4 not totally sure tho
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3 years ago
The volume of one cup of water is 0.000236 cubic meters. Use scientific notation to represent the volume of one cup of water.
Lelu [443]
You just move the decimal so it would be 236

3 0
3 years ago
Read 2 more answers
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