3 years ago

Look at the attachment

Mathematics

1 answer:

bazaltina [42]3 years ago

7 0

The answer is 3 if I’m not mistaken

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At a pie eating contest sam ate 12 1/2 pies in 3 3/4 minutes. How many pies did he eat in a minute?

Inga [223]

Answer: 3 1/3

Step-by-step explanation:

12 1/2 : 3 3/4=25/2 : 15/4= $\frac{25}{2}$ : $\frac{15}{4}$ = $\frac{25}{2}$ * $\frac{4}{15}$ = $\frac{10}{3}$ =3 1/3

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julia-pushkina [17]

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Step-by-step explanation:

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Select whether the equation has a solution or not.

vredina [299]

Answer: The equation has a solution .

Step-by-step explanation:

Since we have given that

$\sqrt{x+1}=7-2\sqrt{x}$

Squaring on both the sides, we get that,

$x+1=(7-2\sqrt{x})^2\\\\x+1=49+4x-28\sqrt{x}\\\\3x+48-28\sqrt{x}=0$

Let $\sqrt{x}=y\implies x=y^2$

So, our equation becomes,

$3y^2-28y+48=0\\\\y=\dfrac{14}{3}\pm \dfrac{2\sqrt{13}}{3}\\\\\sqrt{x}=\dfrac{14}{3}\pm \dfrac{2\sqrt{13}}{3}\\\\x=(\dfrac{14}{3}\pm \dfrac{2\sqrt{13}}{3})^2$

So, $x=\dfrac{248}{9}\pm \dfrac{56\sqrt{13}}{9}$

Hence, the equation has a solution .

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3 years ago

(8 points) will mark brainliest!! pls help:)

sasho [114]

The answer is -21/8 or -2 5/8

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3 years ago

I NEED HELP FAST!! 8 points and you'll get brainiest answer!

KiRa [710]

I believe the answer is A.

hope i'm accurate and hope this helped!

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