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d1i1m1o1n [39]
3 years ago
7

What is the simplified form of StartFractio negative 24 m Superscript 5 Baseline n Superscript 4 Baseline Over 8 m Superscript n

egative 7 Baseline n Superscript negative 2 Baseline EndFraction? Assume m not-equals 0, n not-equals 0.
Mathematics
2 answers:
I am Lyosha [343]3 years ago
8 0

the answer is the option C.

hope this helps

Aleks04 [339]3 years ago
7 0

Answer:

\frac{-24m^5n^4}{8m^{-7}n^{-2}}=-3m^{12}n^{6}

Step-by-step explanation:

Given:

The expression to simplify is given as:

\frac{-24m^5n^4}{8m^{-7}n^{-2}}

We have to simplify this using the properties of exponents.

The property that we use here is:

\frac{a^m}{a^n}=a^{m-n}

So, let us simplify the powers of m\ and\ n separately and -24 and 8. This gives,

\frac{m^5}{m^{-7}}=m^{5-(-7)}=m^{5+7}=m^{12}\\\frac{n^4}{n^{-2}}=n^{4-(-2)}=n^{4+2}=n^6\\\frac{-24}{8}=-3

Therefore, the simplified form is:

\frac{-24m^5n^4}{8m^{-7}n^{-2}}=-3m^{12}n^{6}

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Why is the lcm of two numbers never less than the larger number?
Lady bird [3.3K]
This involves a bit of logic in thinking about what LCM actually means.

LCM is the least common multiple. A common multiple is a multiple shared by two or more numbers. And by multiple, we mean some number multiplied by successive integers; this set contains multiples of 5 {5, 10, 15, 20, 25...}. You can see that the least (or lowest) common multiple is the lowest multiple shared by two numbers. Like for 6 and 9, you have {6, 12, 18, 24...} and {9, 18...}, so LCM(6,9) = 18. 

Now, if an LCM must be shared by both numbers, and to get a multiple of the largest number, you have to multiply by an integer greater than or equal to 1, then the LCM of two numbers can never be less than the larger of the twi numbers. Generally, if x and y are positive real numbers, and x is greater than y, LCM(x,y)  \leq x. 
4 0
4 years ago
A square with vertices (0,0), (5, 0), (5,5), and (0,5) is rotated around the y-axis of coordinate plane. Which of the following
Mnenie [13.5K]

Answer:

When Square with vertices (0,0), (5, 0), (5,5), and (0,5) is rotated around the y-axis of coordinate plane.

There is no chance that circle and Sphere will be formed.

When you rotate the square through an angle of 90° each time till a complete revolution takes place and join all the pieces together we will get a cube.

And when you rotate the square , through angle not equal to 90°, you will get shape of cylinder.

Option B: Cylinder

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3 0
3 years ago
How fast is the train going if it can travel<br> 100 miles in 30 minutes?
DerKrebs [107]

30 min = 30/60 hr = 0.5 hr

d = rt

100 = r*0.5

100/0.5 = r

200 = r

r = 200 mph.

We know that Rate = distance/time

(30 minutes is .5 hour)

Rate=100 mile/.5 hour

Divide and we get:

Rate=200 MPH

(Hint: MPH is Miles per Hour---Per means "for each")

Make sense?

4 0
2 years ago
Last year the depth of the river was 4.2 feet deep. This year it dropped 25%. Find the depth of the river this year to cross it.
Novosadov [1.4K]

Answer:

The river is 3.15 feet deep.

Step-by-step explanation:

First let's recognize what we need to find: the depth of the river

We know last year the river was 4.2 feet deep, but it dropped 25%. This means we also need to find how much it dropped. To find this, we need to know what 25% of 4.2 is. Write an equation for this.

y = 25% of 4.2

y = 0.25 • 4.2

y = 1.05

This means that the river dropped 1.05 feet. To know its depth now, we need to subtract 1.05 from 4.2. Write an equation for this.

d = 4.2 - 1.05

d = 3.15

The river is 3.15 feet deep.

Hope this helps!

4 0
3 years ago
6/7 times 4/5 times 35
scoray [572]
That is so easy :)
the answer is 24
8 0
3 years ago
Read 2 more answers
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