3 years ago

Which choices are equivalent to the expression below check all that apply √-4

Mathematics

1 answer:

Crazy boy [7]3 years ago

8 0

Answer:

You can't get a square root of any number that has a negative sign on the inside of the radical

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One brother says of his younger brother: “Two years ago, I was three times as old as my brother was. In three years’ time, I wil

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Answer:

Step-by-step explanation:

Let us suppose two years ago my brother's age was x years

Then, my age was 3x

Three years from now, my brother's age will be (x +2+3) = (x+5) years

And my age will be (3x+2+3) = (3x+5) years

But it is given that i will be twice as old as my brother.

So, 2(x+5)= (3x+5)

or, x= 5 years

So my brother's present age is 5+2= 7 years

And my age is 5*3+2= 17 years

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4 years ago

Another quadratic formula and the discriminant problem that I am stuck on. the answer is {2, 1/2}

Alina [70]

Answer:

See explanation

Step-by-step explanation:

$2b^2-5b+2=0$

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Hope this helps!

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3 years ago

Ignore the highlighted ones please thxs

denis23 [38]

I believe it’s D. 2/3

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