The answer is 240cm^2, so B.
<span>Surface Areas of Pyramids and Cones Practice: connexus
</span>1) B, 448cm^2
2) D, 209pi cm^2
3) D, 351m^2
4) B, 240cm^2
5) C, 561.1pi cm^2
Just took it so they are all correct! your welcome
Answer:
-2.7
Brainliest would would be appreciated
<span>x-y * x+y = x^2 -y^2
now how about x^4+64 = x^2 -4x+8 * x^2 +4x+8</span>
Let x be the number of 52 cent stamps that Sally has and let y be the number of 34 cent stamps that she has.
Then,
52x + 34y = 1150 --- (1)
Also, she has six more 34 cent stamps than 52 cent stamps.
Therefore, y = x + 6
(1) becomes
52x + 34(x + 6) = 1150
52x + 34x + 204 = 1150
86x + 204 = 1150
86x = 1150 - 204
86x = 946
x = 11
and y = 11 + 6 = 17
Hence, Sally has eleven 52 cent stamps and seventeen 34 cent stamps.
Answer:
-2x²-2x-15
Step-by-step explanation:
-5(2x+3)-2x²+8x
-10x-15-2x²+8x
-2x-15-2x²