13+7²÷7/9-20÷4-16 equals

55

Step-by-step explanation:

13 + 7^2 ÷ - 20 ÷ 4 - 16

Simplify each term.

to divide by a fraction, multiply by its reciprocal.

13 + 7^2 - 20 ÷ 4 - 16

Raise 7 to the power of 2

13 + 49 () - 20 ÷ 4 - 16

Cancel the common factor of 7 .

13 + 7 x 9 - 20 ÷ 4 - 16

Multiply7 by 9.

13 + 63 - 20 ÷ 4 - 16

Divide 20 by 4.

13 + 63 - 1 x 5 - 16

Multiply −1 by 5.

Simplify by adding and subtracting.

Add 13 and 63.

76 - 5 - 16

Subtract 5 from 76.

71 - 16

And lastly subtract 16 from 71.

55

I hope this helps.

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column