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Rzqust [24]
2 years ago
5

Simplify.Rewrite the expression in the form a^na^-13/a^-6 = ??

Mathematics
1 answer:
masya89 [10]2 years ago
7 0

Answer:

a^-7

Step-by-step explanation:

we need to know that :

<h2>\frac{a^{b} }{a^{c} }  =a^{b-c} \\</h2>

so the ans is

a^{(-13)-(-6)} = a^{-7}

by the way

\muti{a^{b} }{a^{c} }  =a^{b+c} \\

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Assume the upper arm length of males over 20 years old in the United States is approximately Normal with mean 39.2 centimeters (
MAVERICK [17]

Answer:

The interval [32.6 cm, 45.8 cm]

Step-by-step explanation:

According with the <em>68–95–99.7 rule for the Normal distribution:</em>  If \large \bar x  is the mean of the distribution and s the standard deviation, around 68% of the data must fall in the interval

\large [\bar x - s, \bar x +s]

around 95% of the data must fall in the interval

\large [\bar x -2s, \bar x +2s] 

around 99.7% of the data must fall in the interval

\large [\bar x -3s, \bar x +3s]

So, the range of lengths that covers almost all the data (99.7%) is the interval

[39.2 - 3*2.2, 39.2 + 3*2.2] = [32.6, 45.8]

<em>This means that if we measure the upper arm length of a male over 20 years old in the United States, the probability that the length is between 32.6 cm and 45.8 cm is 99.7%</em>

3 0
3 years ago
Cards are dealt, one at a time, from a standard 52-card deck. a if the first 2 cards are both spades, what is the probability th
ratelena [41]
So we already drew two cards and both of them are spades. So that means there are 50 cards and 11 spades left.

Then third card being spades would be 11 / 50

Now there are 10 spades and 49 cards left.
So the probability for fourth card would be 10 / 49

Fifth card would be 9 / 48.

So the probability of next three cards being spades would be
\dfrac{11}{50}\cdot\dfrac{10}{49}\cdot\dfrac9{48}=\dfrac{33}{3920}\approx\boxed{0.00842}

Hope this helps.
3 0
3 years ago
gary father dropped him off soccer practice at2:45 pm .his mom picked him up at 5:00 pm.how long did soccer practice last
Volgvan
2 hours and 15 minutes
7 0
3 years ago
Read 2 more answers
Help asap please
Vika [28.1K]

The points on the line are points B and D

<h3>How to determine the points on the line?</h3>

The equation is given as:

y = x + 4

The above means that the output value is 4 more than the input value

Using the above rule, the points that satisfy the equation are:

B) 2, 6 and D) 2, 4

This is so because:

6 = 2 + 4

4 = 2 + 2

Hence, the points on the line are points B and D

Read more about linear equations at:

brainly.com/question/14323743

#SPJ1

6 0
2 years ago
What is the range of f(x)=5x+50
Marrrta [24]
{y|y€ R hope this helps I had to search it up but I recommend you use mathaway it could help you figure it out
5 0
2 years ago
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