3 years ago

Multiply (-3/10)(-5/12)

Mathematics

1 answer:

anygoal [31]3 years ago

5 0

I hope this helps you

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Simplify the following: <br> 2m x 8n

tresset_1 [31]

Answer:

16mn

Step-by-step explanation:

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3 years ago

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20 dived by 16 as a fraction so like you turn them into fraction for 5th grade math

ki77a [65]

The answer is 5/4 (5 over 4)

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3 years ago

What are the solutions to the equation 2x^2 + 9x =5

Maksim231197 [3]

Answer:

$\displaystyle -5 \ and \ \frac{1}{2}$

Step-by-step explanation:

$2x^2 + 9x =5$

we have to move 5 in the other side with a different sign, to get a 2 grade ecuation

$2x^2 + 9x -5= 0$

now we know

a=2

b=9

c=-5

we have to find delta

$\boxed{\Delta=b^2-4ac} \\\\ \Delta=9^2-4\cdot2\cdot(-5)\\ \Delta=81+40 \\ \Delta=121$

and now we have to use the formula to find the root square

$\displaystyle \boxed{ X_{1,2}=\frac{-b\pm\sqrt{\Delta} }{2a} }$

$\displaystyle X_1=\frac{-b-\sqrt{\Delta} }{2a} =\frac{-9-11}{2\cdot2}=\frac{-20}{4} =-5$

$\displaystyle X_2=\frac{-b+\sqrt{\Delta} }{2a} =\frac{-9+\sqrt{121} }{2\cdot4} =\frac{-9+11}{4} =\frac{2}{4} =\frac{1}{2}$

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3 years ago

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“Thirty percent and fifteen percent make forty-five percent and 45% of $60 is $33, so it will cost $33.”

Kaylis [27]

So you gave yourself the own answer lol

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3 years ago

Help me with this please!!

yulyashka [42]

I think this is how u ans it , haha.
Not sure if its comp right but im sure u can get method marks T-T

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3 years ago