Answer:
None of the options are correct, the correct answers are: x = 0.967 and -2.067
Step-by-step explanation:
Comparing this equation with
a = 1, b = 1.1, c = -2
Using the almighty formula for solving quadratic equation:
Answer: 1. x= -12 2. x= 12
Step-by-step explanation:
1. 5(+3)=−45
5x+15−15=−45−15
5x= -60
5x/5 = -60/5
x = -60/5
x= -12
2. 1x/2−4=2
x/2 -4=22−4+4=2+4
/2=6
2⋅2=2⋅6
x=2⋅6
x= 12
Step-by-step explanation:
For 2 1/3 of gasoline = 45 miles
For 1 litre of gasoline = 45 / 7/3
Therefore= 135/7 miles
(19.28 miles approx)
Answer:
Step-by-step explanation:
Answer:
72 runners
Step-by-step explanation:
Total runners = 360
20% of the total runners are in the 35-39 age bracket.
<em>We need to find number of runner in this age bracket.</em>
<em>Which tells us that this number is simply 20% of the total, or 20% of 360.</em>
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How to find percentage of number?
We convert percentage to decimal and then multiply it with the other number.
Converting percentage to decimal requires us to divide by 100. So:
20% = 20/100 = 0.2
Now,
0.2 * 360 = 72
Hence,
72 runners are in the 35-39 age bracket