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Aleksandr [31]
3 years ago
5

a 60kg person climbs stairs of total height of 20m in two minutes calculate the power delivered [g = 10ms^2].​

Mathematics
1 answer:
monitta3 years ago
4 0

Answer:

she's I'll ccgmf

Step-by-step explanation:

for the next day and night and it was so yitd cash check out j vfkcnc gjjx xh

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Find all natural numbers n such that 1+3+5+7+...+(2n-1) sum is divisible by 4
Ierofanga [76]

n ∈ natural even numbers

Step-by-step explanation:

1 + 3 + 5 + 7 + … + (2n-1)

  • a = 1
  • b = 2
  • Uₙ = 2n - 1

sum of the first n terms :

Sₙ = n/2(a + Uₙ)

Sₙ = n/2(1 + 2n - 1)

Sₙ = n/2(2n)

Sₙ = n²

∴ so, the solution of n is all natural even numbers

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3 years ago
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Which expression is a difference of squares?
prohojiy [21]
The answer is
9 {m}^{4}  - 49 {n}^{6}
In the choices; the coefficients 21, 32 and 10 are not perfect squares.
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The sum of x and 8 is less than 72​
Vanyuwa [196]

Answer:

x<84

Step-by-step explanation:

First, write an inequality. We know it is not an equation because of the words "less than". Also, x and 8 are being added because of the word "and". Here's the inequality: x+8 < 72. Now, subtract 8 on both sides so x is isolated. Our simplified inequality looks like this: x < 84.

4 0
3 years ago
The figure below is dilated with the center of dilation at the origin and a scale factor
almond37 [142]

Old coordinate

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As center of dilation is origin the scale factor only multiplied with B

So

new coordinate

B'

  • 1/2(2,-6)
  • (2/2,-6/2)
  • (1,-3)

6 0
2 years ago
Honestly I have a lot of homework to catch up on and not a very good work ethic please help
Mazyrski [523]
A. 4x^2 +5x-4y-3
b. -6x^2+8-2x
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