Answer:
This: Im sorry but, I can't type it all, I just looked up some help.
Step-by-step explanation:
You can rewrite the equation as
5
x
−
3
x
+
8
=
−
10
Then
5
x
−
3
x
=
2
x
So
2
x
+
8
=
−
10
Then, to move the whole numbers to one side, you subtract
8
from both sides
2
x
=
−
18
To get rid of the
2
in front of the
x
, divide both sides by
2
x
=
−
9
Answer:
394.9 cm
Step-by-step explanation:
The formula for a cone's surface area is A = π r ( r + √r^2 + h^2 ).
r = radius
h = height
The Pythagorean theorem, a^2 + b^2 = c^2, will be needed to find the height.
Plug in the values.
a(unknown)^2 + 6^2 = 15^2
A + 36 = 255
255 - 36 = 189
√189 ≈ 13.7
Surface area formula, plug in the values.
A = 3.14 × 6 ( 6 + √6^2 + 13.7^2 )
*PEMDAS*
A = 3.14 × 6 ( 6 + √36 + 187.69 )
A = 3.14 × 6 ( 6 + √223.69 )
A = 3.14 × 6 ( 6 + 14.95 )
A = 3.14 × 6 ( 20.96 )
A = 3.14 × 125.76
A = 394.8864
*round to nearest tenth*
A = 394.9 cm
Hope this helps! :)
The answer is D. 2+1/5×(7/12+3)
Answer:
-50x^2+30x-4
Step-by-step explanation:
