Answer: x=−5 or x=5
Step-by-step explanation:
−3x4+27x2+1200=0
Step 1: Factor left side of equation.
−3(x2+16)(x+5)(x−5)=0
Step 2: Set factors equal to 0.
x2+16=0 or x+5=0 or x−5=0
x=−5 or x=5
Answer:
-21
Step-by-step explanation:
3-(2(-3)-5)-8
3-(-6-5)-8
3-(-11)-8
-21
Answer:
0 —> 15
1 —> 13.75
2 —> 12.5
3 —> 11.25
Step-by-step explanation:
Every time she drives for 1 hour, the car uses up 1.25 gallons of gas. If she fills it up and doesn't drive anywhere, the car will still be full with 15 gallons. If she drives for an hour, you would need to subtract 1.25 from 15 which would equal 13.75.
Then if she drives another hour, then you would subtract another 1.25 from 13.75.
Or a quicker way to do it would be if you multiply the number of hours driven by the gallons used per hour then subtract it from the filled up tank.... So for example if she drove 3 hours —> 3•1.25=3.75 then 15-3.75=11.25
First he can select one fish among 8, after that one among 7 of them and finally one among 6 fish.
8 * 7 * 6 = 336
Then he puts each of selected fish into different containers:
336 * 3 * 2 * 1 = 2,016
Answer: This can be done in 2,016 ways.
Perimeter = 2(length + breadth)
370 = 2 ( 98 + b)
370/2 = 98 + b
185. = 98 +b
b = 185 - 98
b. = 87
Therefore breadth = 87 sq m
