2 years ago

How is rewriting literal equations useful when solving problems

1 answer:

4 0

Rewriting literal equations is useful when solving problems by helping us get more organized with the problem. If the problem is organized, than it is much easier to solve. (I hope this answered your question)

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What is the coefficient of the x9y-term in the binomial expansion of (2y 4x3)4?

Sonbull [250]

The binomial expansion: $T_{k+1}= \frac{n!}{(n-k+1 )!}a^{n-k} b^{k}$
a = 2y, b = 4 x^3, n = 4
( x )^3k = x^ 9
k = 3
$T_{4}= \frac{24}{6}(2y) ^{3-1} (4x^{3} )^{3}$
$T4=512 x^{9} y$
Answer: the coefficient is 512.

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2 years ago

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What is the steps and answer to do this question -x-7y=9 -x+9y=-23

Hitman42 [59]

The answer is 23.

Good luck :)

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2 years ago

This is pre calculus please help !Describe three ways to determine the measure of segment YZ.

Dmitry [639]

(1) Using trigonometric ratios:
$sin(30) = \frac{YZ}{50}$
$YZ = 25$

(2) Using Pythagoras' Theorem:
$cos(30) = \frac{XY}{50}$
$50cos(30) = XY$
$50^{2} - 50^{2}cos^{2}(30) = YZ^{2}$
$2500 - 2500cos^{2}(30) = YZ^{2}$
$YZ = 25$

(3) Using sine rule:
$\frac{50}{sin(90)} = \frac{YZ}{sin(30)}$
$50 = \frac{YZ}{sin(30)}$
$50sin(30) = YZ$
$YZ = 25$

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2 years ago

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If y=12 when x=22 what is y when x=45

VLD [36.1K]

Answer:

y = 35

Step-by-step explanation:

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1 year ago

Equations for m equals three times n devided by the difference of 4p and 5 n

MrRa [10]

Numerator of the equation is 3*nDenominator is 4*p - 5*n The equation is m = 3n/(4p-5n)

Numerator = 3*n
Denominator = 4*p - 5*n
Equation = [m = 3n/(4p-5n)]

4 0

3 years ago