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geniusboy [140]
3 years ago
8

Which method would you choose to solve the following system?

Mathematics
1 answer:
gladu [14]3 years ago
3 0

Answer: combining like terms

Step-by-step explanation:

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Answer:

536.74

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I think so

7 0
3 years ago
(-3/4)(-1 3/4)<br>evaluate ​
Talja [164]

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5 1/4

Step-by-step explanation:

8 0
3 years ago
(ED. 21) Analytic Geometry Unit Test..... #3 Which point is a solution of x2 + y2 &gt; 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
Answers to 5 and 6 please need help please!
Tresset [83]

My friend says 5 is 60 and 6 is b.

8 0
3 years ago
Angela weighs 15% less than she did one year ago. Which of the statements below is true?
Elden [556K]

The current weight W_c is 15% less than the weight Angela had 1 year ago (W). Or we can write,

W_c=(1-\frac{15}{100}) W\\ W_c=\frac{85}{100}W\\.

Thus Angela,s current weight is 85% of her weight one year ago.


8 0
3 years ago
Read 2 more answers
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