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2 years ago

PLZ HURRY IT'S URGENT!!

Mathematics

1 answer:

DIA [1.3K]2 years ago

3 0

Answer:

42 and 63

Step-by-step explanation:

I think you mean the ratio is 2/3 instead of 23

Then the answer is 42/63 = (2 x 21) / ( 3 x 21) = 2/3

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Let f(x) = x2 − 16. Find f−1(x)

Yanka [14]

Answer:

$f^{-1}(x)=\pm\sqrt{x+16}$

Step-by-step explanation:

$f(x)=x^2-16$

To find the inverse of this function, temporarily the f(x) with a y (or whatever else you want) and then solve for the x.

$y=x^2-16\\y+16=x^2\\x=\pm\sqrt{y+16}$

Now, you can swap the variables again and write the function.

$f^{-1}(x)=\pm\sqrt{x+16}$

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2 years ago

Find the surface area of the prism formed by the net

Lunna [17]

ANSWER

$T.S.A=1960m^2$

EXPLANATION

The diagram represents the net of a rectangular prism.

The dimensions are,

$l=42m$

$w = 14m$

and

$h = 7m$

The total surface area of a rectangular prism is given by:

$T.S.A=2(lw + lh + wh)$

We substitute the values to obtain,

$T.S.A=2(42 \times 14 + 42 \times 7 + 14 \times 7)$

$T.S.A=2(980)m^2$

$T.S.A=1960m^2$

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2 years ago

Help fast ASAP for 10 points

Zina [86]

Answer:

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2 years ago

Read 2 more answers

Does anyone know the answer to this question. I already tried A and C.

Archy [21]

I think the answer would have to be D. If the diameter, which is the distance from one point on the circle through the center to another point on the circle, is halved then the amount of concrete that will be needed will be multiplied by 4. I think that's right I am so sorry in advance if that was incorrect. Have a beautiful rest of your day. Stay safe. C O V I D - 1 9 IS REAL THIS COULD MEAN YOUR LIFE!!!

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2 years ago

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antoniya [11.8K]

Answer

................. 60 seconds.. in a minute

Step-by-step explanation:

The amount of time of what?

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3 years ago