) <span>This is an example of scaling up by a scale factor of 3. The ratio 2 : 3 is the same as the ratio of 6 : 15.</span>
4 r1 ² π : 4 r2² π = 4 : 9
r1² : r2² = 4 : 9
r1 : r2 = 2 : 3
r2 = 3 r1/2 ( r - radius of the smaller sphere )
10 π = 4/3 r³ π + 4/3 ( 3 r/2 ) ³ π / : π/3
30 = 4 r³ + 4 * 27 r³/8
30 = 4 r³ + 27 r³/2 / * 2
60 = 35 r³
r³ = 60 / 35 = 12/7
V ( Smaller ) = 4/3 r³ π = 4/3 * 12 / 7 π = 16/7 π = 2.286 π cubic units
Answer:
Step-by-step explanation:
let me see if I can explain this...
3 + 5 = 8....those 2 numbers added together equals the total(8)...if u take the total(8) and subtract one of the numbers, it gives u the other number.
8 - 5 = 3 and 8 - 3 = 5
here's another one...
30 + 60 = 100
100 - 30 = 60 and 100 - 60 = 30
<span>The angles of the figure are complementary, that is, the sum between them is equal to 90º.
Solving:
54º + 4xº = 90º
4xº = 90 - 54º
4xº = 36º
</span>


<span>
We have:
54º + 4.xº = 90º
54º + 4.(9º) = 90º
54º + 36º = 90º
90º = 90º (TRUE)
Answer:
</span><span>
The value of the variable is 9º</span>
None of the choices is correct. -0.38 written as a fraction is -38/100 . It can be reduced to -19/50 .