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3 years ago

Find the number of tiles in the 43rd picture

Mathematics

2 answers:

ludmilkaskok [199]3 years ago

7 0

It should be 169 I worked it out and that’s what I got

FrozenT [24]3 years ago

4 0

Answer:

1849

Step-by-step explanation:

1 - 1

2 - 4

3 - 9

4 - 16 (drew this one out)

We can see that each of the triangles is the number of the picture squared. So for the 43rd picture we take 43 * 43 = 1849

So the 43rd picture is 1849

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solong [7]

Answer:

a) $- \frac{1}{19}$

b) SD(x) = 0.9986

Step-by-step explanation:

Given data:

Number of slots 38

slots for red ball 18

slots for black = 18

slots for green 2

outcomes Red Black or Green

Profit 1 -1

P(X) 18/38 20/38

Expected value of wining,

$E(x) = 1. \frac{18}{38} + (-1) \frac{20}{38} = - \frac{2}{38} = - \frac{1}{19}$

B) Standard deviation of winning SD(x)

$SD(x) = \sqrt{(1- (-\frac{1}{19})^2 .\frac{18}{38} + (1- (-\frac{1}{19})^2 .\frac{20}{38}}$

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3 years ago

Log(100) = log(400) - log(4) "

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3 years ago

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2 years ago

Find the arc length of the partial circle with 1/4 missing and a radius of 5.

Citrus2011 [14]

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3 years ago

Samir is trying to decide between two checking account plans. After researching plans at two banks, he finds that Unity Bank off

GREYUIT [131]

Answer:

The monthly compounded interest rate of 0.14% of Unity Bank is a better plan.

Step-by-step explanation:

Step 1 : Write the formula for calculating a monthly compound interest rate and for calculating an annually compounded interest rate.

Monthly compound interest rate = P(1+r/n)^nxt

n=12 (number of months in a year)

t=1 (number of years)

Annually compound interest rate = P(1+r/n)^nxt

n=1 (because it is for 1 year only)

t=1 (number of years=1)

Step 2 : Lets assume that P is $100 in both banks and time is 1 year.

Step 3 : Lets substitute the values to find out which one is better.

Monthly compound interest rate = P(1+r/n)^nxt

Monthly compound interest rate = 100(1+0.14/12)^12x1

Monthly compound interest rate = 114.93

114.93 - 100 = $14.93 per month

14.93 x 12 = $179.16 for 12 months or 1 year

Annually compound interest rate = P(1+r/n)^nxt

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Annually compound interest rate = 260

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Therefore, the monthly compounded interest rate of 0.14% of Unity Bank is a better plan.

8 0

3 years ago

Read 2 more answers