Answer:
Part A = 30 and Part B = 8
Step-by-step explanation:
930/31 = 30
248/31 = 8
Answer:
18
Step-by-step explanation:
Note that 75% = 75/100 = 3/4, so 3/4 of the marbles must be blue. Let x be amount of blue marbles added. We can write an equation using this.
75% = 3/4 = (3 + x blue marbles)/(3 + 4 + 3 + x total marbles) = (3+x)/(10+x)
Multiplying by 4(10 + x) on both sides:
3(10 + x) = 4(3+x)
30 + 3x = 12 + 4x
18 = x
Therefore, we must add 18 blue marbles for 75% of the marbles to be blue.
I hope this helps! :)
Can we see the cones please
Answer:2 c^2 - 10c
Step-by-step explanation:
First, it is necessary to take out the i from the root. This is done by factoring out -1 as follows, using the relation √(-1) : = i
√-2 = √(-1)(2) = i<span>√2
</span>√-18 = √(-1)(2)(9) = 3i<span>√2
Simplifying by adding the two terms together:
</span>i√2 + 3i√2 = 4i<span>√2
</span>
Therefore the answer is B.
