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Kryger [21]
3 years ago
7

Subtract (5x^2+3)-(2x^2+4x-12)

Mathematics
2 answers:
irina1246 [14]3 years ago
7 0

Answer:

Final answer is 3x^2-4x+15

Step-by-step explanation:

we have been given an expression (5x^2+3)-(2x^2+4x-12).

Now we need to subtract them.

We can subtract like terms only that has same variable with same exponent.

(5x^2+3)-(2x^2+4x-12)

=5x^2+3-2x^2-4x+12

=5x^2-2x^2-4x+3+12

=(5-2)x^2-4x+(3+12)

=(3)x^2-4x+(15)

=3x^2-4x+15

Hence final answer is 3x^2-4x+15

Fynjy0 [20]3 years ago
7 0

Answer:

(5x^2+3)-(2x^2+4x-12) = 3x²-4x+15.

Step-by-step explanation:

We have given the expression:

(5x²+3)-(2x²+4x-12)

We have to subtract.

(5x²+3)-(2x²+4x-12)

5x²+3-2x²-4x+12

5x²-2x²-4x+3+12

3x²-4x+15

3x²-4x+15 is the answer.

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a)13

b) skewed

c) IQR

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Step-by-step explanation:

Step 1 :

From the histogram we can infer that

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2 to 4 texts has been sent by 3 student

4 to 6 texts has been sent by 4 student

6 to 8 texts has been sent by 4 student

8 to 10 texts has been sent by 5 student

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From step 1 , we can see that there are total of 17 students represented by the histogram

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b)

This is a skewed histogram because we have all large values of students on the right of the histogram and smaller values on the left of the histogram.

In symmetrical histogram, there would be large values on the center and the smaller values on both sides.

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IQR would be better recommendation for this as this is a skewed histogram

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