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Lorico [155]
2 years ago
6

The picture shows the $63.90 three friends spent on dinner.

Mathematics
2 answers:
nydimaria [60]2 years ago
4 0

Answer:

$21 . 30

Step-by-step explanation:

Money spent on dinner  =$ 63.90

Money paid by each of the 3 friends = 63.90 ÷ 3 = $ 21.30

Setler [38]2 years ago
4 0

$21 . 30

step by step Explanation:

63.90 ÷ 3 = $21.30

<em>hope this helps!</em>

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Answer:

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Start by writing the system down, I will use y to represent f(x)

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Substitute the fact that y=-3 into the first equation to get,

-3=x^2-5x+3

Simplify into a quadratic form (ax^2+bx+c=0),

x^2-5x+6=0

Now you can use Vieta's rule which states that any quadratic equation can be written in the following form,

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Clearly for small coefficients like ours 5,6, this is very easy to figure out. To get 5 and 6 we simply say that m=3, n=2.

This fits the definition as 5=3+2 and 6=2\cdot3.

So as mentioned, solutions will equal to m=3, n=2 but these are just x-values in the solution pairs of a form (x,y).

To get y-values we must substitute 3 for x in the original equation and then also 2 for x in the original equation. Luckily we already know that substituting either of the two numbers yields a zero.

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5 0
2 years ago
Jessica is baking a cake. The recipe says that she has to mix 96 grams of sugar to the flour. Jessica knows that 1 cup of this p
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we are given the recipe of the cake made by Jessica. In this recipe, a cup weighs 128 grams in which the cake needs 96 grams. she uses half a cup which is equal to 64 grams. This means she needs to add 32 grams more which is 1/4 of a cup. In all, she needs 3/4 of a cup
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snow_lady [41]
3 is less than or equal to x-9 is less than or equal to.

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<= these mean less than or equal to.
hope I helped you!
3 0
3 years ago
The perimeter of a triangle is 86 inches. The largest side is four inches less than twice the smallest side. The third side is 1
Xelga [282]
Hello,
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7 0
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