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Lady bird [3.3K]
3 years ago
14

2) 3x – 8x + 10x ???????????????????????

Mathematics
2 answers:
Rudiy273 years ago
5 0

Answer:

5x

Step-by-step explanation:

using the law of  BODMAS

addition comes before subtraction

so because all of them carry the same variable we can apply BODMAS straight

-8x + 10x =2x

so 3x + 2x =5x

mariarad [96]3 years ago
4 0

Answer:

5x

Step-by-step explanation:

if you use system of operations, start left to right since it is only add or subtract. 3x-8x= -5x. -5x+10x=5x. hope this helps!

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Which inequality best represents that ice cream at −3°C is cooler than ice cream at 1°C?
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the correct answer is B

"ice cream at -3 degrees C is cooler than ice cream at 1 degree C"

-3 is smaller than 1

-3 < 1

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What is the surface area of a sphere with a radius of 11 units?
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Answer:

Step-by-step explanation:

The surface area of a sphere with radius r is given by

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2 years ago
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If r(X)=2-x^2 and w(X)=X-2, what is the range of (w*r)(X)
slega [8]
The given function are
r(x) = 2 - x²    and     w(x) = x - 2
<span>(w*r)(x) can be obtained by multiplying the both function together
</span>
So, <span>(w*r)(x) = w(x) * r(x) = (x-2)*(2-x²)</span>
<span>(w*r)(x) = x (2-x²) - 2(2-x²)</span>
            = 2x - x³ - 4 + 2x²

∴ <span>(w*r)(x) = -x³ + 2x² + 2x - 4
</span>

<span>It is a polynomial function with a domain equal to R
</span>
The range of <span>(w*r)(x) can be obtained by graphing the function
</span>
To graph (w*r)(x), we need to make a table between x and (w*r)(x)

See the attached figure which represents the table and the graph of <span>(w*r)(x)
</span>

As shown in the graph the range of <span>(w*r)(x) is (-∞,∞)
</span>

8 0
3 years ago
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