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Aleks04 [339]
3 years ago
14

Find the quotient of 21x^2y^6+6xy^3-30xy/3xy.

Mathematics
2 answers:
maks197457 [2]3 years ago
7 0

Answer:

Step-by-step explanation:

It’s c

kaheart [24]3 years ago
3 0
\bf ~~~~~~~~~~~~\textit{negative exponents}
\\\\
a^{-n} \implies \cfrac{1}{a^n}
\qquad \qquad
\cfrac{1}{a^n}\implies a^{-n}
\qquad \qquad 
a^n\implies \cfrac{1}{a^{-n}}
\\\\
-------------------------------

\bf \cfrac{21x^2y^6+6xy^3-30xy}{3xy}\implies \stackrel{\textit{distributing the denominator}}{\cfrac{21x^2y^6}{3xy}+\cfrac{6xy^3}{3xy}-\cfrac{30xy}{3xy}}
\\\\\\
\cfrac{21}{3}\cdot x^2x^{-1}y^6y^{-1}+\cfrac{6}{3}\cdot x^1x^{-1}y^3y^{-1}-\cfrac{30}{3}\cdot x^1x^{-1}y^1y^{-1}
\\\\\\
7x^{2-1}y^{6-1}+2x^{1-1}y^{3-1}-10x^{1-1}y^{1-1}\implies 7xy^5+2y^2-10
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If a person is randomly selected, find the probability that his or her birthday is not in may.
Lerok [7]
Supposing 30 days in the month of May (which is not always same in every year),we have,
S= Sample Space
n(S)=total days in a year=365 days
n(E)=no of favourable events
= no of days in the month of May=30 days
Then the probability is of favourable events is,
P(E)=n(E)/n(S)=30/365=6/73
Now,the probability that the birthday is not in May is,
P'(E) =1-6/73=67/73 ANS!!!
5 0
3 years ago
What is Z for the equation 1/2 z=-3/4+1/4z<br><br> −3<br> −1<br> 1<br> 3
dolphi86 [110]
1)
multiply all by the least common multiply:

(\frac{1}{2}  ) \times 4 = 2

( -  \frac{3}{4} ) \times 4 = -  3

( \frac{1}{4} ) \times 4 = 1
+ 1z =  - 3
z =   \frac{ - 3}{1}
z =  - 3
6 0
4 years ago
HELP ASAP! GIVING BRAINLIEST!!
Mumz [18]

Answer:

AB is A

BC is B

AC is D

Step-by-step explanation:

To find the length of each side, use the formula for the distance between coordinate pairs.

We can find the distance using the distance formula:

d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

<u>AB</u>

We then substitute (-3,6) as (x_1,y_1) and (2,1) as (x_2,y_2).

d=\sqrt{(2--3)^2+(1-6)^2} \\d=\sqrt{(2+3)^2+(-5)^2} \\d=\sqrt{25+25}\\d=\sqrt{50}

<u>BC</u>

We then substitute (2,1) as (x_1,y_1) and (9,5) as (x_2,y_2).

d=\sqrt{(9-2)^2+(5-1)^2} \\d=\sqrt{(-7)^2+(4)^2} \\d=\sqrt{49+16}\\d=\sqrt{65}

<u>AC</u>

We then substitute (-3,6) as (x_1,y_1) and (9,5) as (x_2,y_2).

d=\sqrt{(9--3)^2+(5-6)^2} \\d=\sqrt{(12)^2+(-1)^2} \\d=\sqrt{144+1}\\d=\sqrt{145}

5 0
3 years ago
A group of kids just finished trick-or-treating. The number of pieces of candy collected by each of the 5 kids
NemiM [27]

Answer:

s = \sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}

s =\sqrt{\frac{(31-35)^2 +(33-35)^2 +(36-35)^2 +(41-35)^2 +(34-35)^2}{5-1}} =3.808

And the answer for this case would be :

s= 3.81 after round the value

Step-by-step explanation:

We have the following data set given:

31, 33, 36, 41, 34

If we want to find the standard deviation we need to find first the sample mean with this formula:

\bar X = \frac{\sum_{i=1}^n X_i}{n}

And replacing we got:

\bar X = \frac{31+33+36+41+34}{5}= \frac{175}{5}= 35

Now we can find the sampel deviation with this formula:

s = \sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}

And replacing we got:

s =\sqrt{\frac{(31-35)^2 +(33-35)^2 +(36-35)^2 +(41-35)^2 +(34-35)^2}{5-1}} =3.808

And the answer for this case would be :

s= 3.81 after round the value

6 0
4 years ago
WILL SURELY B THANKED AND MARKED BRAINLIEST
Juliette [100K]

Answer:

<em>the</em><em> </em><em>answer</em><em> </em><em>is</em><em> </em><em>c</em>

Step-by-step explanation:

x/42=5/7

x/42=5/7then crisscross

7x=5×42

7x=210....then divide both side by 7

x=30

Hope it'll help!

stay safe:) ^-^

8 0
3 years ago
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