3 years ago

Help me please will get rewared brainly if correct answer

Mathematics

1 answer:

larisa [96]3 years ago

5 0

Well, split it into 3 shapes

21 x 10 = 210

3 x 6 = 18

2 x 6 = 12

210 + 18 + 12 = 240 square cm

imahe for more context

plzzz give me brainliest

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<img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B2x%7D%20%2B%2012%20%3D%20x%20%2B%208%20" id="TexFormula1" title=" \sqrt{2x} + 12

Helga [31]

First note that $x\ge0$ ; otherwise $\sqrt{2x}$ is undefined as long as we're only looking for real solutions.

We can write

$\sqrt{2x}+12=x+8$
$\sqrt{2x}=x-4$
$2x=(x-4)^2$
$2x=x^2-8x+16$
$x^2-10x+16=0$
$(x-8)(x-2)=0$

$\implies x=8,x=2$

4 0

3 years ago

640,409,210 in expanded form

Grace [21]

600,000,000+40,000,000+400,000+9,000+200+10

5 0

3 years ago

Read 2 more answers

Please help!!! the photo really dark but please try to zoom in to see it

weqwewe [10]

Step-by-step explanation:

I wrote the steps in different colour pen so that it would be easier

Hope this is correct and helpful

HAVE A GOOD DAY!

6 0

4 years ago

What is 0.31 as a fraction?

Snezhnost [94]

Answer:

31/100

Step-by-step explanation:

To turn .31 into a fraction we need to multiply it by 100

.31*100=31.

Now we need to divide it by 100

31/100

Since 31 is prime we can not simplify it.

3 0

4 years ago

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What percent of 600 is 12 in proportion

MatroZZZ [7]

I am doing most of it on my own. But other people post their answers from the internet as well. Thanks for your imput.

3 0

3 years ago