The first one is B
Second there is no answer
Third is A
Do you want an explanation?
I posted how to do the first and third question. The second question is by combining like term. X^4 plus 2x^4 is 3x^4, x plus 4x is 5x and there is -3x^3 and -7. That makes the answer 3x^4-3x^3+5x-7. Sorry for the sloppy handwriting.
EDIT: I apologize for getting the second question wrong in the beginning.
3/2 + 1/2x = 2/x
Write 2x in fraction format with 2 as the denominator to match the left side:
2 = 4/2
The equation is now:
3/2 + 1/2x = 4/2x
Subtract 1/2x from each side:
3/2 = 3/2x
Divide both sides by 3/2
x = 1
Answer:
stop cheating
Step-by-step explanation:
nhn
Let x be the cost of each bed sheet and y be the cost of each of the towel. The system of linear equations that best represent the given condition is,
38x + 61y = 791.50
54x + 50y = 923
Solving for x and y in the equation gives, x = 12 and y = 5.5. Thus, one bedsheet costs $12 and each towel costs $5.5.
Answer:
577.50
Step-by-step explanation:
You need to add all the areas of the separate pieces together, so the triangles are:
Triangle: 7 (12) (1/2), but you have 2 of them so don't divide by 2, just 7(12) so that part is 84
Top flap is 15(7) = 105
Middle is 15(12) = 180
Bottom is 15(13.89) = 208.35
Add them all together 84+105+180+208.35 = 577.50