Answer:
A: 7 + 3 (-4) (2)
Step-by-step explanation:
Generally speaking, multiplying or dividing a negative by a positive results in a negative outcome. However, if you multiply or divide two negatives or two positives, the result is positive.
Now, let's convert all these statements into straightforward math expressions and solve them:
A) "7 + 3 (-4) (2)" = 7 + 3 * (-4) * 2 = 7 + (-24) = -17
B) "-2(12/(-3))" =
-2 * [12/(-3)] = -2 * (-4) = 8
C) "(15 - 7) - (9/3)" = (15 - 7) - (9/3) = 8 - 3 = 5
D) "-5(7 + (-14)) - 30" =
-5 * [7 + (-14)] - 30 = -5 * (-7) - 30 = 35 - 30 = 5
The sole expression yielding a negative result is the first one, A.
Hope this was helpful!
According to the rule of 72,
72/rate=time
72÷9.6=7.5 years
An alternative method for resolution using the main formula
2300=1150(1+0.096/4)^4t
Isolate t
t=((log(2,300÷1,150)÷log(1+(0.096÷4))÷4))=7.31 years
I hope this is helpful:-)
The telescope’s cost is $91
4.55 divided by 5% (0.05) equals 91.
Greetings:
<span>(4y-3)²=72
4y-3 = </span>±√72
thus, y= (3+√72) /4 or y= (3 - √72) /4
