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4 years ago

Giving 30 points to a good explanation/answer.

Mathematics

2 answers:

lys-0071 [83]4 years ago

4 0

Answer:

None of these are correct.

Step-by-step explanation:

Hello there!

If you are asked to multiply two expressions with exponents, add the exponents and place them on top of the original number.

The correct answer is $5^9$ .

jekas [21]4 years ago

4 0

Answer:

$5^{9}$

Step-by-step explanation:

Indicie multiplication works by adding the exponent presuming that the base is the same.

$4^{7}$ , 4 is the base and so stays the same, 7 is the exponent.

$x^{2}$ , here the equation is the same as x * x as exponents work by multiplying the base, x, by iteself y times, where y is the exponent and in this case 4.

As we know this, $x^{2} * x^{2}$ can be simplified too $x^{4}$ , which is the same as

x * x * x * x, so we know in such a situation we just add the two exponents together.

You might be interested in

Does anybody know how to do it ?

shutvik [7]

To find the length of the arc given the central angle, multiply (the fraction of the angle of the full circle, 360°, that the central angle, 120°, makes up)*(the total circumference of the circle). You're basically finding the fraction of the circumference that is covered by the central angle, if that makes any sense.

So the central angle makes up $\frac{120\°}{360\°} = \frac{1}{3}$ the entire circle. You are given that the circumference of the circle is 18. Multiply the fraction of the full circle that the central angle makes up ( $\frac{1}{3}$ ) by the circumference of the circle:
$\frac{1}{3} \times 18 = 6$

The length of your arc is 6.

Let me know if you're confused b/c my explanation isn't the greatest :) I'll try to explain it better if you don't understand.

8 0

3 years ago

What is the standard deviation from the mean roundest to the nearest tenth

Sedaia [141]

The standard deviation from the mean of the data with a variance of 36 is: B. 6.

<h3>What is Standard Deviation?</h3>

Standard deviation can be described as the average of the distance each of the value lies from the mean of the data.

The standard deviation is the square root of the variance.

Variance of the data is given already as 36.

Standard deviation = √36 = 6.

The answer is B. 6.

Learn more about the standard deviation on:

brainly.com/question/12402189

#SPJ1

7 0

3 years ago

X^2-12x+36=0 X= Solve for x

solong [7]

Answer:

Step-by-step explanation:

X^2-12x+36=0

X^2 - 8x - 4x + 36 = 0

(x^2 -8x) - (4x - 36) = 0

x(x - 8) - 4(x - 8) = 0

(x - 4)(x - 8) = 0

:- x - 4 = 0 or x - 8 = 0

x = 4 or x = 8

8 0

4 years ago

Read 2 more answers

Find how long it takes a $ 900.00 investment to earn $ 120.00 in interest if it is invested at 6% compounded annually.

atroni [7]

So, we know the earned interest is 120, and we know the original deposited amount is 900 bucks, so, the accumulated amount will then be 900 + 120 or 1020 bucks.

$\bf \qquad \textit{Compound Interest Earned Amount}
\\\\
A=P\left(1+\frac{r}{n}\right)^{nt}
\quad 
\begin{cases}
A=\textit{accumulated amount}\to &\$1020\\
P=\textit{original amount deposited}\to &\$900\\
r=rate\to 6\%\to \frac{6}{100}\to &0.06\\
n=
\begin{array}{llll}
\textit{times it compounds per year}\\
\textit{annually, thus once}
\end{array}\to &1\\
t=years
\end{cases}$

$\bf 1020=900\left(1+\frac{0.06}{1}\right)^{1\cdot t}\implies \cfrac{1020}{900}=(1.06)^t\implies \cfrac{102}{90}=(1.06)^t
\\\\\\
log\left(\frac{102}{90} \right)=log(1.06^t)\implies log\left(\frac{102}{90} \right)=t\cdot log(1.06)
\\\\\\
\cfrac{log\left(\frac{102}{90} \right)}{log(1.06)}=t\implies 20.92 \approx t$

7 0

4 years ago

Consider f (x) = StartRoot x squared minus 1 EndRoot and g (x) = StartRoot x squared + 1 EndRoot. What value(s) of x would make

dalvyx [7]

Answer:

Any value of x

Step-by-step explanation:

Given

$f(x) = \sqrt{x^2 - 1}$