Evaluate the following expression using the values given: find 2x − 3y − z if x = −2, y = 3, and z = −2 a −11 b 11 c −15 d 15

Hey there! :) 

2x - 3y - z ; When x = -2, y = 3, & z = -2

Since we're given the values of x, y, & z, we can very simply plug everything in! 

2(-2) - 3(3) - (-2)

Simplify.

(-4) + (-9) + 2

Get rid of parenthesis.

-4 - 9 + 2

Remember to do PEMDAS! 

Parenthesis
Exponents
Multuply
Divide
Add
Subtract

So, since adding comes before subtracting, let's add! :) 

-4 - 9 + 2

-4 - 7

Simplify.

-11

So, our answer is [A] : -11

~Hope I helped!~

Answer: d. 39 cmin the diagram, the approximate length of the minor arc de is 39 centimetres.step-by-step explanation: the formula for the length of an arc in a circle is as displayed below.let the length of the minor arc de = xx = 2( pi )r × angle of sector / 360°from this, we will substitute the values given from the problem into the formula to obtain the length of the minor arc de.x = 2( pi )r × angle of sector / 360°r = radius = 25cmpi as an approximate value = 3.14angle of sector = 120°x = 2( 3.14 )( 25 ) × 120° / 360°x = 157 × 1 / 4x = 39.25x = 39 ( rounded to the nearest whole number as an approximate value )