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adoni [48]
2 years ago
15

If f(x)=3x² - 4 and g(x)=x+2, find (f - g)(x).​

Mathematics
1 answer:
nika2105 [10]2 years ago
3 0

Answer:

D

Step-by-step explanation:

(f - g)(x)

= f(x) - g(x)

= 3x² - 4 - (x + 2) ← distribute parenthesis by - 1

= 3x² - 4 - x - 2 ← collect like terms

= 3x² - x - 6

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Sue took a test in both biology and math last week. The biology test had a mean of 70 and a standard deviation of 7 whereas the
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Answer:

c. the biology test

Step-by-step explanation:

To answer this problem we need to calculate the z-score of both tests, using the formula:

z = (x - μ) / σ

Where x is Sue's score, μ is the mean, and σ is the standard deviation.

  • For the <u>biology test</u>, the z-score is:

z = (76 - 70) / 7 = 6/7 = 0.857

  • For the <u>math test</u>, the z-score is:

z = (76 - 75) / 10 = 1/10 = 0.100

Because the z-score for the biology test is greater than the z-score for the math test, Sue did better in the biology test, in comparison to the rest of the class.

6 0
3 years ago
What is the formula of x
miv72 [106K]

Answer:

Isolate "x" on one side of the algebraic equation by dividing the number that appears on the same side of the equation as part of "x." For example, in the equation "12x = 24", rewrite the equation as "x = 24 / 12" and solve for "x." The solution is "x = 2."

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Miriam is 5 cm taller than her sister,who is ? cm tall.write an expression of mia's height in cm.
Mazyrski [523]

The expression of Mia's height in cm is 5 + x

<h3>How to write an expression of Mia's height in cm?</h3>

The given parameters are

Mia's height = 5 cm taller than her sister

Her sister's height  = x

The parameter "Mia's height = 5 cm taller than her sister" means that

Mia's height = 5 cm + her sister's height

Substitute Her sister's height  = x in Mia's height = 5 cm + her sister's height

Mia's height = 5 cm + x

This means that the expression of Mia's height in cm is 5 + x

Read more about expressions at:

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How to solve axis of symmetry for quadratics
rjkz [21]
-b/2a will give you the axis of symmetry.
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tamaranim1 [39]
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Orange constitutes 2/6, or 1/3, of a pack.
2/6 x 30 = 60/6 = 10 orange juice packs. 


3 0
3 years ago
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