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umka2103 [35]
2 years ago
14

PLEASE HELP ME! For a geometric sequence, if a1 = 2 and a5 = 1250, what is the value of r?​

Mathematics
1 answer:
Zina [86]2 years ago
5 0

Answer: r = 5

Steps:

a_n=ar^{n-1}

1. add Values to formula

1250=2r^{5-1}

2. get r alone

\frac{1250}{2}=\frac{2r^{4}}{2}  ➜ 625= r^4
3. get rid of the exponents

\sqrt[4]{625}= \sqrt[4]{r^4} ➜ \sqrt[4]{625}= r=5

r = 5

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Read 2 more answers
Write the length of the segments that connect each pair of points, in units.
MArishka [77]

The lengths of each of the segments connected by the given pairs of points are:

1. AB = 10 units

2. CD = 17 units

3. EF = 3 units

<h3>How to Find the Length of Segments Connected by Two Points?</h3>

To find the length of a segment connected by two coordinate points, the distance formula is applied, which is:

d = \sqrt{(y_2 - y_1)^2 + (x_2 - x_1)^2}.

1. Find the length of segment AB:

A(5,-3)

B(-3,3)

AB = √[(−3−5)² + (3−(−3))²]

AB = √[(−8)² + (6)²]

AB = √100

AB = 10 units

2. Find the length of segment CD:

C(-2, -7)

D(6, 8)

CD = √[(6−(−2))² + (8−(−7))²]

CD = √(64 + 225)

CD = 17 units

3. Find the length of segment EF:

E(5,6)

F(5,3)

EF = √[(5−5)² + (3−6)²[

EF = √(0 + 9)

EF = √9

EF = 3 units

Learn more about lengths of segments on:

brainly.com/question/24778489

#SPJ1

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1 year ago
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