will give medal

Find the value of the expression 2x3 + 3y2 − 17 when x = 3 and y = 4. (5 points)

26
85
943
1,927

Question

will give medal 


Find the value of the expression 2x3 + 3y2 − 17 when x = 3 and y = 4. (5 points)
 
  
 26 
 85 
 943 
 1,927

anonymous · Answer

Okay so you need to substitute. You know how?

anonymous · Answer

You just insert the x=? and the y=? in for the x's and y's in the equation.

anonymous · Answer

2x3 +3y2 − 17 
=2 *3*3 + 3*4*2-17
=25

anonymous · Answer

25 isn't even an answer up there

welshfella · Answer

2x3 + 3y2 − 17
x = 3 y = 4

so we have 2(3)^3 + 3(4)^2 - 17
=  54 + 48 - 17

welshfella · Answer

i've assumed that the numbers after the x an y are exponents

anonymous · Answer

So the answer would be 85

welshfella · Answer

yes

anonymous · Answer

substitute the 3 for x and 4 for y and do the math it would come out to 85

anonymous · Answer

I see now that makes total sense thank you so very much

welshfella · Answer

yw

anonymous · Answer

np

anonymous · Answer

does any body know how to do this one If the length of side a is 12 centimeters, m∠B = 36°, and m∠C = 75°, what is the length of side b? Round your response to two decimal places.