The answer is Johnny. You can conclude from the first sentence of your question. It is stating that Johnny's mother has three children. Johnny is included in the three children. So, the third child's name was Johnny!
Thank you! :D
Given:
The geometric sequence is:
![a_n](https://tex.z-dn.net/?f=a_n)
1 -4
2 20
3 -100
To find:
The explicit formula and list any restrictions to the domain.
Solution:
The explicit formula of a geometric sequence is:
...(i)
Where, a is the first term, r is the common ratio and
.
In the given sequence the first term is -4 and the second term is 20, so the common ratio is:
![r=\dfrac{a_2}{a_1}](https://tex.z-dn.net/?f=r%3D%5Cdfrac%7Ba_2%7D%7Ba_1%7D)
![r=\dfrac{20}{-4}](https://tex.z-dn.net/?f=r%3D%5Cdfrac%7B20%7D%7B-4%7D)
![r=-5](https://tex.z-dn.net/?f=r%3D-5)
Putting
in (i), we get
where ![n\geq 1](https://tex.z-dn.net/?f=n%5Cgeq%201)
Therefore, the correct option is B.
Answer:
x = 200
Step-by-step explanation:
1/5x – 2/3y = 30
substitute in y
1/5x - 2/3(15) = 30
multiply
1/5x - 10 = 30
isolate the variable
1/5x = 40
multiply each side by 5
x = 200
9514 1404 393
Answer:
33√2 in ≈ 46.7 inches
Step-by-step explanation:
The diagonal of a square is √2 times the side length, so for side length s we have ...
s√2 = 66 in
s = (66 in)/√2
x = 33√2 in ≈ 46.7 in . . . . length of each side of the blanket
Multi-step equations are equations that require more than one step to solve.
For example:
2x+6 = 10 You subtract 6 from both sides
2x= 4 Divide both sides by 2
x=2 It took 2 steps to solve for x, so it is a muti-step equation.
One step equation:
2x =6 divide 2 by both sides
x=3 It only took one step, so it is an one-step equation.
Hope this can help you! Please put branliest answer if you like it!