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3 years ago

If a divides c and that b divides c. Prove ab divides c

Mathematics

1 answer:

Lera25 [3.4K]3 years ago

7 0

If a divides c,

then 'a' is a factor of 'c'.

Also,

If 'b' divides c,

then 'b' is also a factor of 'c'

therefore,

'a' and 'b' are factors of 'c'

Hence, a and b divides 'c'

so, c = a*b

and ab will also divide c.

Hence, proved.

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Illusion [34]

Answer:

y=2 · 3xy equals 2 times 3 superscript x baseline

Step-by-step explanation:

y=2 · 3 xy equals 2 tim

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3 years ago

Find how many numbers greater than 400,000 can be made using all the digits of 416566

Mandarinka [93]

Answer:

Step-by-step explanation:

You have to fill in 6 slots _ _ _ _ _ _.

Since first digit must be 4, there is only 1 way to fill in the 1st slot.

with the 5 slots, we fill in the 6s first, 3 of them.

So we have 5 options and 3 items to fill, (5 choose 3).

Then 2 ways to fill 1 and 1 way to fill 5. (It doesn't matter if you pick 5 or 1 first).

So it becomes (5C3) * (2C1) *(1C1)

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3 years ago

Can anyone help me on this expression triangle

Sauron [17]

Answer:

3a+7=5a-3

5a-3a=3+7

2a=10

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Again

6b-5=2b+9

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4b=14

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Step-by-step explanation:

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3 years ago

Find the unknown side length of the rectangle is 3 2/3 and if the area is 11m2

patriot [66]

Answer:

The width of the rectangle given is equal to 3m.

Step-by-step explanation:

In order to solve this question we need to know that the areas of the rectangle is equal to $A_{rectangle} = (l)(w)$ , where "l" is length and "w" is width. So know in order to solve this question we would have to find out the unknown width by using area and the length of the triangle. Based on the formula I wrote down earlier we can understand the following.....

$A_{rectangle} = (l)(w)$

$\frac{A_{rectangle} }{l} = \frac{(l)(w)}{l}$

$w = \frac{A_{rectangle} }{l}$

Just now we found out the formula that we can use to solve for the width when we know the area and the length of the rectangle. Now in order to get the answer we just have to plug in the values we know, and we get........

$w = \frac{A_{rectangle} }{l}$

$w = \frac{11m^{2} }{(3\frac{2}{3}m )}$

$w = 3m$

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3 years ago

after 1 second, the rock is 243 feet in the air; after 2 seconds, it is 452 feet inthe air. find the height, in feet, of the roc

PSYCHO15rus [73]

1 second is 243
2 second is 452
3 second is 661
4 second is 870
5 second is 1,079
It goes up 209 feet per second
5 Second is 1,079 ft in the air.

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3 years ago