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rjkz [21]
3 years ago
10

What is the factored form of the expression k^2 - 9h^2

Mathematics
1 answer:
LekaFEV [45]3 years ago
6 0
The equation which is supposed to help you is this one:
a^2 - b^2 = (a+b) (a-b)

So, what we need to do here is apply this equation:
k^2 - 9h^2 = 
k * k - (3h)^2 =
(k + 3h) (k - 3h)

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How many positive four-digit integers are multiples of 5 and less than 4,000
Volgvan

Answer:

  Number of positive four-digit integers which are multiples of 5 and less than 4,000 = 600

Explanation:

 Lowest four digit positive integer = 1000

 Highest four digit positive integer less than 4000 = 3999

 We know that multiples of 5 end with 0 or 5 in their last digit.

 So, lowest four digit positive integer which is a multiple of 5 = 1000

 Highest four digit positive integer less than 4000 which is a multiple of 5  = 3995.

 So, the numbers goes like,

       1000, 1005, 1010 .....................................................3990, 3995

 These numbers are in arithmetic progression, so we have first term = 1000 and common difference = 5 and nth term(An) = 3995, we need to find n.

          An = a + (n-1)d  

           3995 = 1000 + (n-1)x 5

           (n-1) x 5 = 2995

           (n-1) = 599

            n = 600

 So, number of positive four-digit integers which are multiples of 5 and less than 4,000 = 600

6 0
3 years ago
Please please answer please
arsen [322]

Answer:

C. 180 degrees

Step-by-step explanation:

The sum of a triangle's interior angles is equal to 180

7 0
2 years ago
Brainliest will mark
marshall27 [118]
The answer would be the second option B) because we can cross out A) and D) since those are multiplication, and it's not C) because that's commutative property, not associative.
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8. Find the equation of the line through the origin and point (3,4) Slope = Equation=​
abruzzese [7]

Answer:

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Step-by-step explanation:

Since the line goes through the origin and is propotinal, we just do y/x

4/3= 1 1/3

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CHECK (Using desmos)

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How many gallons are in 48 pints?
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Answer:

6

Step-by-step explanation:

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