take father's age as x
if it is doubled i.e 2x .we get the answer as 20 less than 100 which means 100-20=80
accordingly the equation will be 2x=80
x=40
given that ,
son is 1/4 th of his father
hence ,
son = 1/4×(x)
I.e, 1/4×40 =10
Hope it helps
Is this a question or an answer? Because it looks like your trying to tell me this if you need help (if it is a question) be sure to pm me.
Answer:
3.33×10⁴
Step-by-step explanation:
You can use the hint, or you can use a common exponent. Here is the latter case.
(3.9×10⁴) -(5.7×10³) = (3.9×10⁴) -(0.57×10⁴) = (3.9 -0.57)×10⁴
= 3.33×10⁴
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With a little practice, you can see the effect on exponents of moving the decimal point. Here, we have ...
5.7×10³ = (0.57×10)×10³ = 0.57×(10×10³) = 0.57×10⁴
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When adding or subtracting in scientific notation, all that is required is that the exponents of all the numbers be the same. The hint says make all the exponents be 0. Above, we have chosen to make them all be 4. You could also use 3:
(3.9×10⁴) -(5.7×10³) = (39×10³) -(5.7×10³) = (39 -5.7)×10³
= 33.3×10³ = 3.33×10⁴
1 is the answer for your question the first one
Answer:
The number you are looking for is n < -2.333...
Step-by-step explanation:
Here is the modeled equation for this problem:
3n - 4 < -11.
Add 4 to both sides to isolate 3n.
3n - 4 + 4 < -11 + 4.
3n < -7.
Divide 3 to both sides to get the value of n.
3n/3 < -7/3.
n < -2.333...
So n must be less than -2.333... to make the equation true. Any number equal to or greater than -2.333 will result in the equation being false.
