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vfiekz [6]
3 years ago
5

At a pet store, Rhonda paid $55 for 8 dog bowls and 6 bones. Kelly paid $32.50 for 2 dog bowls and 9 bones. Determine the cost o

f one dog bowl (x) and one bone (y). Write a system of linear equations that models this situation.
please don't leave a link just answer
Mathematics
1 answer:
Mashutka [201]3 years ago
8 0

Answer:

y is 8/5 when x = -4.

Step-by-step explanation:

If the value of "Y" varies directly with "X", we can write y = kx, where k is the constant of proportionality.

If "y=-8,when x=20," then we can find k:    -8 = 20k, or k = -2/5.

Then y = (-2/5)x.

If x = -4, then y = (-2/5)(-4) = 8/5

y is 8/5 when x = -4.

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When substituting, you want to take the y value from one equation and plug it into the y variable in the other equation to find the x value. When you find the c value, you plug the number into one of the equations to get your y value.

3 0
3 years ago
For the inverse variation equation xy = k, what is the constant of variation, k, when x = –3 and y = –2?
Dovator [93]

Answer:

6 =k

Step-by-step explanation:

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7 0
3 years ago
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A geometric sequence has an initial value of −8 and a common ratio of 1.5. Select all the function(s) or formula(s) that could r
Feliz [49]

Answer:

A and c

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I took the test

4 0
3 years ago
In how many ways can ann, bob, chuck, don and ed be seated in a row such that ann and bob are not seated next to each other?
balandron [24]
The 5 people can seat in a row in 5! ways
But we need to exclude the ways <span>that ann and bob are seated next to each other which is = 4! * 2!
</span>
So, the number of <span>ways can ann, bob, chuck, don and ed be seated in a row such that ann and bob are not seated next to each other = 5! - 4! * 2! = 72
</span>
<span>=====================================================
</span>
<span>Another solution:
</span>
<span>If ann seated in one of the ends, the number of ways = 3*2
</span>
<span>If ann didn't seat in one of the ends , the number of ways = 2*3
</span>
So, the total number of <span>ways that can <span>ann, bob be seated = 3*2 + 2*3 = 12
</span></span>
The remaining persons can seat with a number of ways = 3! = 6
So, the total ways that the five persons can seat = 12*6 = 72
7 0
3 years ago
I need to know the area of the figure
siniylev [52]
The formula is there for area of a trapezoid.

1/2(4)(9 + 13)
2(22)
44
5 0
2 years ago
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