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3 years ago

(Using Rates)

Mathematics

1 answer:

REY [17]3 years ago

7 0

Answer:

He would need to know how many yards he wants to buy

Step-by-step explanation:

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I will mark you brainlyest if you answer this

babunello [35]

Answer:

I dont get the question

Step-by-step explanation:

6 0

3 years ago

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SOMEBODY HELP ME WITH THESE PLEASE! I really need the help like NOW PLS!

snow_lady [41]

93. $g(n) = n - 4$
$f(n) = 2n^2 - 5n$

then $g(n) +f(n) = (n-4) + (2n^2 - 5n)$
                                $= n - 4 + 2n^2 - 5n$
                                $= 2n^2 -5n + n - 4$
                                $= 2n^2 - 4n -4$

95. $f(n) = -n+3$
      $g(n) = n^3 + 3n$
Then $f(n) . g(n) = (-n+3) . (n^3 + 3n)$
                                 $= -n^4 + 3n^3 - 3n^2 + 9n$

97. $f(x) = 3x+1$
$g(x) = 2x$
For finding f(g(x)) we will plugin value of g(x) in place of x in f(x).
$f(g(x)) = 3*(2x) + 1$
                  $= 6x + 1$

99. $f(n) = n - 3$
$g(n) = 2n^2 - 3n$

$g(-7) = 2*(-7)^2 - 3 * (-7) = 2* 49 + 21 = 98 + 21 = 119$
$f(g(-7)) = 119 - 3 = 116$

4 0

4 years ago

Simplify:<br> (4xy^-6)^-3 <br><br><img src="https://tex.z-dn.net/?f=%284xy%5E%7B-6%7D%20%29%5E%7B-3%7D" id="TexFormula1" title="

Zepler [3.9K]

Answer:

(4^-3)(x^-3) y^(18)

y^18/ (64 x^3)

Step-by-step explanation:

(4xy^-6)^-3

Distribute the exponent to all terms in the parentheses

(4^-3)(x^-3) (y^-6)^-3

a^ b^c = a^ (b*c)

(4^-3)(x^-3) y^(-6*-3)

(4^-3)(x^-3) y^(18)

If we do not want negative exponents

a ^ -b = 1/ a^b

y^18/( 4^3 x^3)

y^18/ (64 x^3)

4 0

4 years ago

If f (1)= -2, then the point is on the graph of f

Komok [63]

<h3>Answer: (1, -2)</h3>

Explanation:

Writing f(1) = -2 means x = 1 and y = f(x) = -2 pair up together

So we have (x,y) = (1, -2) as the point on the f(x) curve.

6 0

3 years ago

Summer uses 0.4 gallon of gasoline each hour mowing lawns. how much gas does he use in 4.2 hours

hammer [34]

1.68 gallons will be used

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3 years ago

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