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satela [25.4K]
2 years ago
10

Kay started a chess club, and for a while she was the only member. She planned to have each member find two new members each mon

th. By the end of the first month, she had found two new members. If her plan is carried out, how many members will the club have at the end of 6 months
Mathematics
1 answer:
Lyrx [107]2 years ago
6 0

Answer:

  127

Step-by-step explanation:

The sum of 7 terms of the series 1 +2 +4 +... with first term 1 and common ratio 2 is given by ...

  Sn = a1 × (r^n -1)/(r -1) . . . . . . first term a1, common ratio r

  S7 = 1 × (2^7 -1)/(2 -1) = (128 -1)/1 = 127

At the end of 6 months, the club will have 127 members.

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Find the length of side x in simplest radical form with rational denminator
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Answer:

As shown in picture, this is an isosceles right triangle ( A = 90 deg, B = C = 45 deg). => Except hypotenuse, side1 = side2, or x = \sqrt{6}

Hope this helps!

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A relative asked her aunt that lives in Canada to send her some money to help her pay for her school tuition in the US. Her aunt
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Step-by-step explanation:

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4 0
3 years ago
Read 2 more answers
What are the x- and y- coordinates of point E, which partitions the directed line segment from J to K into a ratio of 1:4?
Aleks [24]

The x- and y- coordinates of point E, which partitions the directed line segment from J to K into a ratio of 1:4 is (17, 11)

<h3>Midpoint of coordinate points</h3>

The midpoint of a line is the point that bisects or divides the line into two equal parts

If the line JK is partitioned into the ratio 1:4 with the following coordinates

J(-15, -5) and K(25, 15)

Using the expression below;

M(x, y) =[mx1+nx2/m+n, my1+ny2/m+n]

Substitute the ratio and the coordinates

M(x, y) =[1(-15)+4(25)/4+1, 1(-5)+4(15)/1+4]

M(x, y) = [(85)/5, 55/5]

M(x, y) = (17, 11)

Hence the x- and y- coordinates of point E, which partitions the directed line segment from J to K into a ratio of 1:4 is ((17, 11)

Learn more on midpoint of a line here: brainly.com/question/5566419

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3 0
2 years ago
Look at the picture to see the question.
Andru [333]

Answer:

y = 5/7x + 5

Step-by-step explanation:

If you replace the x and y in the equation with points x and y of point (35, 30) and change the 10 to b you can solve for b which is the what changes from the original equation to this one.

30 = 5/7(35) + b

30 = 25 + b

5 = b

Since the equations are parallel they have the same slope.

This is the equation for a parallel line that passes through point (35, 30):

y = 5/7x + 5

Hope this made sense! Please give Brainliest!

6 0
2 years ago
Which of the following is a solution of x2 − 10x = −36? (6 points)
Softa [21]

Answer:

D

Step-by-step explanation:

Given

x² - 10x = - 36

Solve using the method of completing the square

add ( half the coefficient of the x- term )² to both sides

x² + 2(- 5)x + 25 = - 36 + 25

(x - 5)² = - 11 ( take the square root of both sides )

x - 5 = ± \sqrt{-11} ( add 5 to both sides )

x = 5 ± i\sqrt{11}

Thus

x = 5 - i\sqrt11} or x = 5 + i\sqrt{11}

6 0
3 years ago
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