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cupoosta [38]
3 years ago
7

1. k/3=3/9 A)1 B)3 C)9 D)27 2.1/

Mathematics
2 answers:
NARA [144]3 years ago
7 0
Hello there.

<span>1. k/3=3/9

</span><span>A)1</span>
postnew [5]3 years ago
3 0
Cross multiply so you have kx9 = 9k and 3x3 = 9 so 9k = 9, now you divide by 9 and you get k=1
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You are ordering pizzas for a birthday party and getting them delivered to your house. You order 12 pepperoni pizzas, 8 cheese p
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Let

x-------> the cost of each  pepperoni pizza

y-------> the cost of each  cheese pizza

z-------> the cost of each  Hawaiian pizza

we know that

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y=x -----> equation B

z=x -----> equation C

Substitute equation B and equation C in equation A

12x+8x+4x+5.50=184.54

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24x=184.54-5.50

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<u>the answer is</u>

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8 0
3 years ago
Read 2 more answers
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Answer:

6.7 hours

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If one can do 50 then three can do 150.

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2 years ago
Find the range for f(x) = x^2 1, for x &lt; 0.<br><br> y ≥ 1<br> y &gt; 1<br> y &lt; 1<br> y ≤ 1
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For x < 0, range is y ≤ 1.
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3 years ago
What is the equation of the inverse function A(n)=3n-20
Allisa [31]

Answer:

A^{-1}(n)=\frac{1}{3}n+\frac{20}{3}

Step-by-step explanation:

First, let's change those variables to x and y, just for the sake of convenience.  In order to find the inverse of a function algebraically, switch the x and y coordinates, then solve for the new y.  Letting y = A(n) and x = n (we will switch them back when we're done):

y = 3x - 20.  This is linear; a line with a slope of 3 and a y-intercept of -20.  When we switch the x and the y, we get:

x = 3y - 20.  Now we solve for the new y.  Begin by adding 20 to both sides:

x + 20 = 3y.  Now divide both sides by 3:

\frac{x+20}{3}=y, or to write it in slope-intercept form, like the function you started with:

y=\frac{1}{3}x+\frac{20}{3}

This is also a line, with a slope of 1/3 and a y-intercept of +20/3

Now, replacing:

A^{-1}(n)=\frac{1}{3}n+\frac{20}{3}

That is how to write the inverse using function notation.  The little -1 as an exponent tells us that this is the inverse of the function A(n).

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3 years ago
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