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3 years ago

5 and six help me please

Mathematics

2 answers:

melisa1 [442]3 years ago

6 0

3,6,9,12,15,18,21,24,27,30
6,12,18,24,30,36,42,48,54,60
Common multiples are: 6,12,18,24,30

mina [271]3 years ago

3 0

Multiples of 4: 4, 8, 12, 16, 20, 24, 28, 32, 36, 40
Multiples of 5: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50
Common: 20, 40

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A triangle has sides of lengths 10, 24, and 26. is it a right triangle? explain

Stels [109]

Yes it's a right triangle. Using the Pythagoran
10^2 + 24^2 = 26^2

Thus it's a right triangle

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3 years ago

In a primary school the ratio of boys to girls is 6:7

NeTakaya

Answer:

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Step-by-step explanation:

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3 years ago

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What is the answer to 5-1/3n=-2

Free_Kalibri [48]

Answer:

21 = n

Step-by-step explanation:

$5 - \frac{1}{3}n = -2$

-5 - 5

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-⅓n = -7

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-⅓ -⅓

21 = n

* Dividing by a fraction is the exact same as multiplying by its multiplicative inverse:

$\frac{-7}{-\frac{1}{3}} = -7 \times -3 = 21$

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3 years ago

How many quarter hours are in 5 hours?

nikklg [1K]

There is a few ways to get the result.
Lets try this.
First calculate how many minutes are in the 5 hours.
60min*5=300min - in 5 hours
Now, knowing that quarter is 15min we can divide 300 by 15 to get the result, so
300:15=20 - its the result.

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Is x+3=-5y in standard form?

skad [1K]

Answer:

Nope

Step-by-step explanation:

Standard form for a linear equation in two variables is $Ax+By=C$ with the terms containing x and y on the left side of the equation and a number on the right side.

$x+3=-5y$

Subtract 3 from both sides.

$x=-5y-3$

Add 5y.

$x+5y=-3$

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