Select the best answer to the word problem (picture provided)

The answer is ⇒ answer (b)

Step-by-step explanation:

* Lets discuss the formula

- cosФ =

- Now find in termas of cosФ and

* square the two sides

∴ cos²Ф =

* Multiply two sides by

∴ cos²Ф × =

∵ Ф = 45°

∴

∵ cos45 = √2/2

∴ cos²Ф = (√2/2)² = 1/2 = 0.5

∴

y = 5x + 17

step-by-step explanation:

a perpendicular line will be the opposite reciprocal slope of the given equation.   the slope given is -1/5 so the opposite reciprocal is 5

find b:

7 = 5 (-2) + b

7 = -10 + b

17 = b

write equation

y = 5x + 17

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