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3 years ago

Math Geniuses, I need your help!

Mathematics

1 answer:

vesna_86 [32]3 years ago

3 0

Answer:

100

Step-by-step explanation:

Since the second 4 is two decimal points away from the first 4, the answer should be 100 (two zeros)

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Given the system of equations:

mr_godi [17]

Answer:

Step-by-step explanation:

Given the system of equations:

2x + 3y = 15

X + 3y = 0

What is x?

2x + 3y = 15

X + 3y = 0 subtract the bottom equation fron the top one

2x - x + 3y - 3y = 15 - 0 see how the 3y - 3y equates to zero

2x - x = 15

x = 15 Now for extra credit what is y?

X + 3y = 0

15 + 3y = 0

15 - 15 + 3y = 0 - 15

3y = -15

3y/3 = -15/3

y = -5

-15

-5

6 0

3 years ago

How do you graph f(x)=|x^2-4|?

Citrus2011 [14]

*Hint: When an equation has | it means the absolute value.

Up in the attachment I have provided above is the way that equation should be graphed.

Because the x is squared, it's known that the graph will have a parabola. The -4 is showing the indent it will have.

7 0

4 years ago

Kelly deposits $3,000 at a rate of 5.2% compounded quarterly. With no additional deposits or withdrawals, what is the account ba

lorasvet [3.4K]

$\bf ~~~~~~ \textit{Compound Interest Earned Amount}
\\\\
A=P\left(1+\frac{r}{n}\right)^{nt}
\quad 
\begin{cases}
A=\textit{accumulated amount}\\
P=\textit{original amount deposited}\to &\$3000\\
r=rate\to 5.2\%\to \frac{5.2}{100}\to &0.052\\
n=
\begin{array}{llll}
\textit{times it compounds per year}\\
\textit{quarterly, thus four}
\end{array}\to &4\\
t=years\to &10
\end{cases}
\\\\\\
A=3000\left(1+\frac{0.052}{4}\right)^{4\cdot 10}\implies A=3000(1.013)^{40}
\\\\\\
A\approx 5029.201878874637$

7 0

3 years ago

Read 2 more answers

About 10% of the population has a particular genetic mutation. 700 people are randomly selected. Find the standard deviation for

Oduvanchick [21]

Answer: 7.94

Step-by-step explanation:

The formula to calculate the standard deviation for binomial distribution :-

$\sigma=\sqrt{np(1-p)}$ , where n is the number total of trials and p is the probability of getting success in each trial.

Given : The probability of the population has a particular genetic mutation=0.1

If 700 people are randomly selected, then the standard deviation for the number of people with the genetic mutation in such groups of 700 will be :-

$\sigma=\sqrt{700\times0.1(1-0.1)}\\\\\Rightarrow\sigma=\sqrt{63}\\\\\Rightarrow\sigma=7.9372539331\approx7.94$

Hence, the standard deviation for the number of people with the genetic mutation in such groups of 700 = 7.94

8 0

3 years ago

Rename the quadratic function f(x)=-2(x+4)^2-5 in standard form.

Contact [7]

Answer:

function: x=-4

y-intercept: f(0)=-37

Step-by-step explanation:

hope this helps!

8 0

3 years ago