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2 years ago

A company’s stock was selling at $20 a share. A month later, it was selling at $26 a share. What is the percent gain

Mathematics

1 answer:

fiasKO [112]2 years ago

3 0

Answer:

The percent gain would be 77952515`0%

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If you sleep for 9 h one night, what fractional part of a day did you spend sleeping?

Angelina_Jolie [31]

Answer:

3/8 of the day

Step-by-step explanation:

A day is 24 hours

You spend 9 of them sleeping

The fraction you spend sleeping is

9/24

You can simplify the fraction by dividing the top and bottom by 3

9/3 = 3

24/3 = 8

3/8

7 0

2 years ago

5.5% sales tax on a 59.99 lamp

VikaD [51]

Answer:

$63.29

Step-by-step explanation:

1. $59.99* 5.5%= 3.29945

2. 3.29945 +$59.99 = 63.28945

3. round to $63.29

there i hope i help :)

7 0

2 years ago

Can somebody prove this mathmatical induction?

Flauer [41]

Answer:

See explanation

Step-by-step explanation:

1 step:

n=1, then

$\sum \limits_{j=1}^1 2^j=2^1=2\\ \\2(2^1-1)=2(2-1)=2\cdot 1=2$

So, for j=1 this statement is true

2 step:

Assume that for n=k the following statement is true

$\sum \limits_{j=1}^k2^j=2(2^k-1)$

3 step:

Check for n=k+1 whether the statement

$\sum \limits_{j=1}^{k+1}2^j=2(2^{k+1}-1)$

is true.

Start with the left side:

$\sum \limits _{j=1}^{k+1}2^j=\sum \limits _{j=1}^k2^j+2^{k+1}\ \ (\ast)$

According to the 2nd step,

$\sum \limits_{j=1}^k2^j=2(2^k-1)$

Substitute it into the $\ast$

$\sum \limits _{j=1}^{k+1}2^j=\sum \limits _{j=1}^k2^j+2^{k+1}=2(2^k-1)+2^{k+1}=2^{k+1}-2+2^{k+1}=2\cdot 2^{k+1}-2=2^{k+2}-2=2(2^{k+1}-1)$

So, you have proved the initial statement

4 0

2 years ago

Simplify expression show step by step <br> (-2i)(8i)

TiliK225 [7]

Answer:

Step-by-step explanation:

<u>Remember that $i^2 = -1$ </u>

(-2i)(8i)

$-16i^2$

$-16(-1)$

5 0

2 years ago

Look at picture <br>please help in less than 5 min

tiny-mole [99]

The answer is b
2^2*3*7=
4*3*7=
12*7=
84

7 0

2 years ago