Answer:
C
Step-by-step explanation:
3600*20%=720kg
Answer:
X=20
Step-by-step explanation:
Sin(x+20)=cos(2x+10)
Sin(x+20)=sin(90-(2x+10)
X+20=90-2x-10
3x=60
X=20
Okay so take:
3.99×3=11.97 that's how much the magazines cost together
add the tax which is 1.02→ 11.97+1.02=12.99
12.99 is how much the tax and magazines were now you need to add the four sheets of stickers and add the coupon because the total was more and the total was 16.49 with the coupon and without it its 17.99
take 17.99-12.99=5.00 and divide that by 4 and your answer is 1.25
EACH SHEET OF STICKERS COST 1.25 EACH
SHORT ANSWER: 84cm
Let width = w
Let length = w + 5
The area of a rectangle is found by multiplying its width by length and the problem states that the area is 84 cm2.
(Width)(Length) = 84
(w)(w + 5) = 84
w2 + 5w = 84
w2 + 5w - 84 = 0
(w + 12)(w -7) = 0
w + 12 = 0
w = -12
The width of a rectangle can't be NEGATIVE!!! Forget about that!
w - 7 = 0
w = 7
Now go back to naming the variables and replace the w with 7.
Length = w + 5 = 7 + 5 = 12
Width is 7 cm. Length is 12 cm.
Check it. Is 7 x 12 = 84? Yes.
