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3 years ago

42x 5 y 4 =(−7x 3 y)(B)

1 answer:

4 0

This is my very own step-step solution:

Step 1:
Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation : 

 42*x^5*y^4-((-7*x^3*y)*(b))=0
Step 2:Equation at the end of step 1 :

((42•(x5))•(y4))-((0-(7x3•y))•b) = 0

Step 3:Pulling out like terms :

42x5y4 + 7x3yb = 7x3y • (6x2y3 + b)

The correct is: 7x3y • (6x2y3 + b) = 0 

Quick Side Note:
Binomial can not be factored as the difference of two perfect cubes

I hope this helps a little!

Hope you have a great day!

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Question 5 (2 points)

Brums [2.3K]

Answer:

the question doesnt make sense

Step-by-step explanation:

a = 4

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3 years ago

Mary crocheted a rectangular blanket whose diagonal measures approximately 7.21 feet. What are the most likely length and width

mote1985 [20]

Answer:

If both sides are integers, one side will be 4 feet and the other will be 6 feet. The other solution is the symmetrical solution (4 feet instead of 6 feet, and 6 feet instead of 4 feet).

Step-by-step explanation:

We have a rectangular blanket, that has a diagonal that measures h=7.21 feet.

The two sides of the rectangle a and b can be related to the diagonal h by the Pithagorean theorem:

$a^2+b^2=h^2$

Then, we can express one side in function of the other as:

$a^2+b^2=h^2\\\\a^2=h^2-b^2\\\\a=\sqrt{h^2-b^2}=\sqrt{7.21-b^2}=\sqrt{52-b^2}$

Then, if we define b, we get the value of a that satisfies the equation.

A graph of values of a and b is attached.

If both side a and b are integers, we can see in the graph that are only two solutions: (b=4, a=6) and (a=4, b=6).

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3 years ago

Help please!! Due in 10 min

Kryger [21]

Answer:

Hello Answer: V = 20

Step-by-step explanation:

Hope this helps!

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3 years ago

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Perform the indicated operation. 1/5+3/5

Vesnalui [34]

Answer:

because we have the same denominator, it will be 4/5

Step-by-step explanation:

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3 years ago

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John believes that the amount of sleep he gets the night before a test and his score on that test are inversely related. On his

siniylev [52]

Answer:

Step-by-step explanation:

ohn will need to sleep for 10.3 hours before his second exam so that the

he average of his two exam scores is an 80.

We were given

8 hours of sleep = 70

To get an average of 80

70+ x = 80

Cross multiply:

70+x = 160

x= 160-70

= 90.

If 8 hours of sleep = 70

x hours of sleep = 90

Cross multiply

8× 90 = 70 × x

720 = 70x

x = 720/70

x = 10.2857

≈ 10.3 hours of sleep

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2 years ago

42x ​5 ​​ y ​4 ​​ =(−7x ​3 ​​ y)(B)

42x 5 y 4 =(−7x 3 y)(B)