3 years ago

Which of the following inequalities can be used to represent a number x that is greater than -5 and less than 3?

Mathematics

1 answer:

alukav5142 [94]3 years ago

3 0

All of the answers are -5 I'm confused

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Find the square root of the decimal no 2.56

Alenkasestr [34]

Consider this decimal as a fraction.

We have:

$\sqrt{ \frac{256}{100} }$

We now can take the square root of the numerator and the denominator separately for a result of 16/10, or 1.6.

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A rectangle with an area of 3990 cm2 is x centimeters wide and (x+4) centimeters long. To the nearest tenth of a centimeter, the

Karolina [17]

Answer: width:60.2 cm

Length: 64.2 cm

Step-by-step explanation:

Given

The area of the rectangle is $3990\ cm^2$

Width of the rectangle is $x\ cm$

Length of the rectangle is $x+4\ cm$

Area of the rectangle is the product of length and width

$\therefore 3990=(x+4)x\\\Rightarrow 3990=x^2+4x\\\Rightarrow x^2+4x-3990=0\\\Rightarrow x=60.198\ or\ -65.198\ cm\\\text{Neglecting negative term}\\\Rightarrow x=60.198\approx 60.2\ cm$

Width of the rectangle is $60.2\ cm$

Length of the rectangle is $60.2+4=64.2\ cm$

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3 years ago

What is the solution to -3x<9

GaryK [48]

-3x<9. The way to figure this out is to divide by -3 to get x by itself. Remember, when dividing by a negative, you need to flip the inequality sign.
x>-3 is your answer.
I hope this helps!

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3 years ago

Let a is in {−3, −1, 0}. Evaluate −a for each element of the set.

12345 [234]

Ok so a∈{-3,-1,0}. then just {-3*-1,-1*-1,0*-1} which comes to {3,1,0}

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STALIN [3.7K]

Answer:

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Step-by-step explanation:

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