Answer:
![\frac{ac}{a+b} .](https://tex.z-dn.net/?f=%5Cfrac%7Bac%7D%7Ba%2Bb%7D%20.)
Step-by-step explanation:
1) Δ ADE ~ Δ ABC, then
⇒ ![\frac{x}{c} =\frac{a}{a+b};](https://tex.z-dn.net/?f=%5Cfrac%7Bx%7D%7Bc%7D%20%3D%5Cfrac%7Ba%7D%7Ba%2Bb%7D%3B)
![2) \ finally, \ x=\frac{ac}{a+b} .](https://tex.z-dn.net/?f=2%29%20%5C%20finally%2C%20%5C%20x%3D%5Cfrac%7Bac%7D%7Ba%2Bb%7D%20.)
Answer:
the answer is 133
Step-by-step explanation:
we do substitution
2*3^2=18
3^3=27
5(27-4)=115
27+115=133
Therefore, the decimal representations of irrational numbers satisfy conditions 1 and 2; that is, irrational numbers are decimals that do not terminate and do not repeat. Knowing these properties, it is now possible for us to construct irrational numbers in decimal form at will.
for spanish people
Por lo tanto, las representaciones decimales de números irracionales cumplen las condiciones 1 y 2; es decir, los números irracionales son decimales que no terminan y no se repiten. Conociendo estas propiedades, ahora es posible para nosotros construir números irracionales en forma decimal a voluntad.
Answer: Plus or minus 1 standard deviation from the mean.
Step-by-step explanation:
According to the Empirical rule,
If the population is normally distributed then, about 68% of the population lies within 1 standard deviation from the mean value.
Here, the data shows 68% percent of the area under the normal distribution.
This is equivalent to "plus or minus 1 standard deviation from the mean."
Hence, the correct option is : plus or minus 1 standard deviation from the mean.