Student 1 -234567 X 90 87 85 85 95 96 82 85 87 89 90 92 94 80 75 4.3 1.3 -0.7 -0.7 9.3 10.3 -3. -7. 10

A: We first multiply 2x72x7=14Because of PEMDAS we multiply first.

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A: Solve (2x-3)2=49

A: 3-4+8 =-1+8 =8-1 7

A: Given that                                            8+9-10 here we will use BODMAS B= Bracket  O=…

A: Adding Fractions Step 1: Make sure the bottom numbers (the denominators) are the same. Step 2: Add…

A: As we know from the exponent rule: ab·ac=ab+c   (a). The given expression is: -9x37x4

A: In (-3,9) and  (-3,-5) x ordinate = -3 for both.So on the line joining them x is fixed.

A: Solution: Here 3u+4u=49

A: The given expression is;

A: The calculation for 20+(-4)(-5) is presented as follows:

A: Answer y = 3  solution is given in step 2

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A: this is a simple calculation question we will simplify this by normal calculation.

A: To simplify the given expression.

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A: Use the defintion of square to write the given expression as follows.

A: Use PEMDAS rule to simplify.First we work with the parenthesis. In it 8-12=-4

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A: 8 + 7(42 - 3) = ?