49pi
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Answer:
Step-by-step explanation:
x =(-7+√-7)/-2=(7-i√ 7 )/2= 3.5000+1.3229i
or:
x =(-7-√-7)/-2=(7+i√ 7 )/2= 3.5000-1.3229i
1500 / 24 = 60
60 times must 24 be added <span>until the sum is 1500</span>
Answer:
3:4
Step-by-step explanation:
there are 6 boys for every 8 girls, so the initial ratio is 6:8. however, this can be simplified by finding a number both 6 and 8 are evenly divisible by. In this case, you can divide the ratio by 2. 6/2 = 3 and 8/2 = 4, which is why the simplified form is 3:4
Answer: At 6% = $66,800
At 10% = $34,400
Step-by-step explanation:
Let S be his savings. He divided S into x that goes at 6% and y at 10%
As he put twiced as much at the lower-yielding one, x = 2y
Simple interest is given by: Amount x interest x time
This way I₁ = x . 0.06 . 1 = 0.06x
I₂ = y. 0.10 . 1 = 0.10y
As x = 2y, I₁ = = 0.06 . 2y = 0.12y
As we know that the annual interest was $7348
I₁ + I₂ = 7348
0.12y + 0.10y = 7348
0.22y = 7348
y = 7348/0.22
y = 33,400
As x = 2y, x = 2.33,400 = 66,800
This was he invested $33,400 and $66,800