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astraxan [27]
3 years ago
6

the second term in a geometric sequence is 50. The fourth term in the same sequence is 112.5. what is the common ratio in the se

quence?
Mathematics
2 answers:
Finger [1]3 years ago
4 0
Geometric sequence

a_n=a1r^{n-1}
r=common ratio
a1=first term
n=which term

2nd term is 50
4th is 112.5

a_2=a1r^{2-1}=50
a_2=a1r^{4-1}=112.5

50=a1r^{1}
112.5=a1r^{3}

therefor
112.5/50=\frac{a1r^3}{ar^1} =r^2=2.25
r^2=2.25
sqrt both sides
r=1.5

the common ratio is 1.5
vekshin13 years ago
4 0

Answer:

1.5 apex answer

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Ugo [173]
W=340-z (vice versa)
x=540-w (vice versa)
y=-150+x (vice versa)
z=-50+y ( vice versa)
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4 years ago
olivia chooses the whole number she divides it by 4 then adds 8 she then divides this result by 2. her answer is 3.5. what numbe
GarryVolchara [31]

Answer:

-8

Step-by-step explanation:

just do the promble backwards

3.5 times 2 = 6

6-8=-2

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or solve for x

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6 0
3 years ago
7x+8y=−46 2y − 6=0 What is the solution (x,y) to the system of equations above?
yarga [219]

Answer:

(-10, 3)

Step-by-step explanation:

You can do it algebraically (substitution or elimination) or graphically. I will be using substitution to solve this.

Step 1: Rewrite 2nd equation

2y = 6

y = 3

Step 2: Plug in <em>y</em>

7x + 8(3) = -46

7x + 24 = -46

7x = -70

x = -10

Put it in coordinates and we have our final answer!

8 0
3 years ago
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kotykmax [81]

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Step-by-step explanation:

3 0
3 years ago
Put the following in order from least to greatest. 3/4, 66.66%, 5/7​
storchak [24]

Answer:

3/4=63/84

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⇒66.66%; 5/7; 3/4

Step-by-step explanation:

6 0
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