3 years ago

Which of the following expressions are equivalent to x + y-z

Mathematics

1 answer:

gavmur [86]3 years ago

5 0

Answer:

C since y-x are being subtracted and there should be another subtraction but there isnt

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Solve the following inequality. 5x-3 > 7<br> a. x > 2<br> b. x < 50<br> c. x > 50

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Answer:

x > 2

Step-by-step explanation:

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3 years ago

The median of the data set is 18 what number is missing 12,17,21,13,25

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Step-by-step explanation:

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2 years ago

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Express p in terms of q if

Irina-Kira [14]

$p=x^2+\dfrac{1}{x^2}\\\\p=\dfrac{x^4}{x^2}+\dfrac{1}{x^2}\\\\p=\dfrac{x^4+1}{x^2}\qquad(*)$

$q=x+\dfrac{1}{x}\\\\q=\dfrac{x^2}{x}+\dfrac{1}{x}\\\\q=\dfrac{x^2+1}{x}\qquad\text{square both sides}\\\\q^2=\left(\dfrac{x^2+1}{x}\right)^2\\\\q^2=\dfrac{(x^2+1)^2}{x^2}\qquad\text{use}\ \ (a+b)^2=a^2+2ab+b^2\\\\q^2=\dfrac{(x^2)^2+2(x^2)(1)+1^2}{x^2}\\\\q^2=\dfrac{x^4+2x^2+1}{x^2}\\\\q^2=\dfrac{x^4+1}{x^2}+\dfrac{2x^2}{x^2}\\\\q^2=\dfrac{x^4+1}{x^2}+2\qquad\text{subtract 2 from both sides}\\\\q^2-2=\dfrac{x^4+1}{x^2}\\\\\text{From (*) we have}\\\\\boxed{p=q^2-2}$

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2 years ago

The median of 50 50 54 56 60 62 63 64 79 72 72

miss Akunina [59]

Answer:

Step-by-step explanation:

50,50,54,56,60,62,63,64,79,72,72,

median ids the number at the center

50,50,54,56,60(62)63,64,79,72,72

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2 years ago

Natasha is making fudge. The recipe calls for 2 pounds of chocolate. Natasha uses a digital scale to weigh the chocolate she has

SpyIntel [72]

Answer:

Yes

Step-by-step explanation:

Th .06 lbs of chocolate will not affect the recipe because .06 is only 3% off.

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3 years ago