2 years ago

6 is 15% of what number? * 70 40 45 50

Mathematics

1 answer:

sveta [45]2 years ago

8 0

Answer:40

Step-by-step explanation:

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-64=(2cos(pi/2)+2i sin(pi/2))^n..... n=??

zvonat [6]

Answer:

The real solution is $n=6$ .

Step-by-step explanation:

$\cos(\frac{\pi}{2})=0$ while $\sin(\frac{\pi}{2})=1$

So the equation becomes:

$-64=(2(0)+2i(1))^n$

$-64=(0+2i)^n$

$-64=(2i)^n$

We know that $2^6=64$ . So let's see what $n=6$ gives us:

$(2i)^6=64i^6=64i^4i^2=64(1)(-1)=-64$ .

$-64$ is the result we wanted.

$n=6$ is therefore a solution.

4 0

2 years ago

Someone please help me

Karolina [17]

Answer:

them some expensive pencils

8 0

3 years ago

Use the number line to show<br> 2/3 divide 1/12 <br> What is the quotient

JulsSmile [24]

Answer:

Step-by-step explanation:

There is no number line given, so I will use the "keep change flip" method.

$\frac{2}{3}\div\frac{1}{2}\\\rule{150}{0.5}\\ \frac{2}{3}\cdot\frac{12}{1}\\\\\frac{2\cdot12}{3\cdot1}\\\\\frac{24}{3}\\\\\boxed{8}$

Hope this helps.

4 0

2 years ago

Read 2 more answers

1. A magazine advertise its $12 annual subscription price 70% off the newsstand price. What is the number of dollars per year a

ollegr [7]

1. $17.14

12 represents 70%
x represents 100%

rule of three

Price Percentage
+12 70-
-x 100+

$x= \frac{12*100}{70} 
 \\ \\
x= \frac{12*10}{7} 
 \\ \\ x=17.14$

3 0

2 years ago

Dr. M wanted to estimate the mean cholesterol level for men living in Hartford. He took a sampled of 20 men from Hartford and fo

Gekata [30.6K]

Answer:

answer is in an image here

imageshare.best/image.php?id=JS9NDO

Explanation:

copy n paste in browser

not a bot btw

4 0

2 years ago