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3 years ago

How many numbers between 1 and 200 are evenly divisible by 7?

Mathematics

1 answer:

andrew11 [14]3 years ago

7 0

Answer: 28

Step-by-step explanation: there are 28 multiples of 7 up to 200

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If a and b are positive integers and 22a(22b)=16, what is the value of a+b?

Kryger [21]

Given that:
<span>22a(22b)=16
484ab=16
thus
ab=16/484
ab=4/121
thus given that
ab=4/121
then
a=4 and b=1/121
hence
4+1/121
=4 1/121</span>

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3 years ago

Alan is 8 years old than jon. If Alan is 21 years old, how old is Jon?

Ainat [17]

Answer:

21-8

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valina [46]

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Step-by-step explanation:

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Pls help me in these two little exercises about the slope.

den301095 [7]

Answer:

3) $y=\dfrac35x+\dfrac25$

4) a) $y=-2x+7$

b) $y=\dfrac12x+\dfrac92$

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<u>Exercise 3</u>

$-3x + 5y = 2$

$\implies 5y = 3x + 2$

$\implies y=\dfrac35x+\dfrac25$

<u>Exercise 4</u>

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If L2 passes through point (3, 1):

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$\implies y=-2x+7$

So L2 = L1

b) If L3 is perpendicular to L1, then the slope of L3 is the negative reciprocals of the slope of L1 ⇒ $m = \dfrac12$

If L3 passes through point (-5, 2):

$y-y_1=m(x-x_1)$

$\implies y-2=\dfrac12(x+5)$

$\implies y=\dfrac12x+\dfrac92$

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