2 years ago

Help the smol bean smol bean is stuggling

Mathematics

1 answer:

ruslelena [56]2 years ago

5 0

Im confused can you please clarify?

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A student solved the equation 2x+6=12 using algebra tiles. incorrectly says the solution is 9. Solve the equation. What mistake

alexdok [17]

Instead of subtracting 6 from 12 then dividing they added 6 to 12 & ended up with 18. 18 by 2 is 9.

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2 years ago

What is 5 2/9 plus 7 5/15

alina1380 [7]

47/9+110/15=705/135+990/135=1695/135=12 15/27

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3 years ago

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The ratio of the interior angle measures of a triangle is 2:3:5. What are the angle measures?

romanna [79]

Answer:

36:54:90

Step-by-step explanation:

you add all the parts together (2+3+5) which is 10. then you divide 180 by 10 because angles in triangle add up to 180. so 18 is one part

then you just times 18 by each part in the ratio

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1 year ago

Determine the zeroes of 10x2−5=35

OLEGan [10]

Answer:

x = +2, x = -2

Step-by-step explanation:

The equation to solve in this problem is

$10x^2-5=35$

The first step we do is to subtract 35 on both sides of the equation, so we get:

$10x^2-5-35=0\\10x^2-40=0$

Now we simplify the equation by dividing both terms by 10:

$\frac{10x^2-40}{10}=0\\x^2-4=0$

Now we observe that the term on the left is the difference between two squares, so it can be rewritten using the property:

$a^2-b^2=(a+b)(a-b)$

Where here,

a = x

b = 2

So we can rewrite the equation as:

$x^2-4=0\\(x+2)(x-2)=0$

And this equation is zero when either one of the two factors is zero, so the two solutions are:

$x+2=0\rightarrow x=-2\\x-2=0 \rightarrow x=+2$

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2 years ago

Find the least common multiple of 12 and 30

Gelneren [198K]

60

12, 24, 36, 48, 60
30, 60

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3 years ago

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