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frozen [14]
2 years ago
9

7.(-3x³)(-2x³y⁴z)(-3z²)÷(4x³z)(-3yz) (-3xyz)​

Mathematics
1 answer:
serg [7]2 years ago
5 0

Answer:

-\frac{x^2y^2}{2}

Step-by-step explanation:

We have an extremely large equation and are asked to divide it, so let's solve it step-by-step :

Remove the parenthesis to make it easier to read :

\frac{-3x^3 *2x^3y^4z *3z^2}{4x^3z*3yz*3xyz}

Multiply the numerators :

\frac{-18x^6y^4z^3}{4*3*3x^3yyzzz}

Multiply the denominators :

\frac{-18x^6y^4z^3}{36x^4y^2z^3}

Apply the negative rule :

-\frac{18x^6y^4z^3}{36x^4y^2z^3}

Cancel the common factor which is 18 :

-\frac{x^6y^4z^3}{2x^4y^2z^3}

Apply the addition exponent rule :

\frac{y^4z^3x^{6-4} }{2y^2z^3}

Subtract :

\frac{x^2y^4z^3 }{2y^2z^3}

Apply the rule for y :

\frac{x^2y^{4-2} z^3 }{2z^3}

Subtract :

\frac{x^2y^2z^3 }{2z^3}

Cancel the common factor of z^3 :

-\frac{x^2y^2}{2}

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At a department store, a coat that normally sells for $50 is on sale for $35. What is the percent decrease in the cost?
velikii [3]

Answer:

50÷35=15%

Step-by-step explanation:

7 0
3 years ago
Troy cut a 100 foot rope into 3 pieces. The first piece is 43 foot long. The second piece is at least 22 feet long, but no great
Inessa05 [86]

Answer:

x=4

Step-by-step explanation:

Let he first piece be x the second be 3x and the very last one be 7x + 2

 

Add all the pieces together and you ought to get the length of the rope which is 46 ft

 

So your equation would be

 

x + 3x + 7x + 2 = 46

 

11x = 44

 

x = 44 / 11

 

x = 4

 

so the 3 pieces are 4 , 12 and 30ft

4 0
3 years ago
Please help me right away with these problems.
viktelen [127]

Q.34

\sum\limits_{k=1}^{\infty}420\left(1.002\right)^{k-1}

The infinite geometric series is converges if |r| < 1.

We have r =1.002 > 1, therefore our infinite geometric series is Diverges

Answer: c. Diverges, sum not exist.

Q.35

\sum\limits_{k=1}^{\infty}-5\left(\dfrac{4}{5}\right)^{k-1}

The infinite geometric series is converges if |r| < 1.

We have r = 4/5 < 1, therefore our infinite geometric series is converges.

The sum S of an infinite geometric series with |r| < 1 is given by the formula :

S=\dfrac{a_1}{1-r}

We have:

a_1=-5\left(\dfrac{4}{5}\right)^{1-1}=-5\left(\dfrac{4}{5}\right)^0=-5\\\\r=\dfrac{4}{5}

substitute:

S=\dfrac{-5}{1-\frac{4}{5}}=-\dfrac{5}{\frac{1}{5}}=-5\cdot\dfrac{5}{1}=-25

Answer: c. Converges, -25.

4 0
3 years ago
write 2/3 and 3/5 as decimals. Identify what number classifications the two numbers share and how their classifications are diff
malfutka [58]

Answer:

See below

Step-by-step explanation:

<u>Given</u>

  • Fractions 2/3 and 3/5

<u>As decimals:</u>

  • 2/3 = 0.66666...
  • 3/5 = 0.6

The first one is non-terminating repeating decimal as the digit 6 is repeated

The second one is terminating decimal

4 0
2 years ago
Does anyone know this one????
Mnenie [13.5K]

x + 15 = 2x

-x = -15

x = 15

m<A = 15 + 15

m<A = 30

m<D = 2(15)

m<D = 30

Hope this helps! ;)

6 0
3 years ago
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