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Veronika [31]
3 years ago
14

4.8 + 2.2w − 1.4w + 2.4 ?

Mathematics
2 answers:
vaieri [72.5K]3 years ago
8 0

Answer:

7.2+0.8W

Step-by-step explanation:

melisa1 [442]3 years ago
7 0

Answer:

0.8w + 7.2

Step-by-step explanation:

Separate the numbers with and without variables.

4.8 + 2.4 = 7.2

2.2w - 1.4w = 0.8w

( Remember when u put ur answer together the number with variables should be in front of the number without variables! or whatever i dont remember lol i only remember how to solve. )

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2. The Soccer Club is selling T-shirts and washing cars to raise money for a summer trip. Last week, the club raised $292.50 by
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(ED. 21) Analytic Geometry Unit Test..... #3 Which point is a solution of x2 + y2 > 49 and y ≤ –x2 – 4?
sdas [7]

Answer:

We want to find a solution of the system:

x^2 + y^2 > 49

y ≤ –x^2 – 4

Here we do not have any options, so let's try to find a general solution.

First, we can remember that the equation of a circle centered in the point (a, b) and of radius R is:

(x - a)^2 + (y - b)^2 = R^2

If we look at our first inequality, we can write it as:

x^2 + y^2 > 7^2

So the solutions of the first inequality are all the points that are outside (because the symbol used is >) of the circle of radius R = 7 centered in the origin.

From the other equation, we would get:

y ≤ –x^2 – 4

This is parabola, anything that is in the graph of the parabola or below will be a solution for this inequality.

Then the solutions of the system, are the ones that are in the region of solutions for both inequalities.

You can see the graph below, where both regions are graphed. The intersection of these regions is the region of the solutions for the system of inequalities:

by looking at the graph, we can see a lot of points that are solutions, like:

(0, -10)

(0, -15)

(2, -10)

etc.

8 0
3 years ago
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horrorfan [7]

Answer:

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Step-by-step explanation:

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6 0
3 years ago
Walter pays $2.53 to ship a package
Ivan

Answer:

what is the rest of the equation?

Step-by-step explanation:

7 0
3 years ago
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