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Rashid [163]
3 years ago
11

What is the solution to the following system of equations?

Mathematics
1 answer:
suter [353]3 years ago
8 0
(8, 2) 

You can get this by using elimination. Multiply the bottom equation entirely by -5 and the x terms will cancel. You can then solve for the y value and use that to find the x. 
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I am doing a project in my math class where we create a picture with functions and needed an egg curve. I finally figured out th
matrenka [14]

<span>Let's solve this problem step by step.</span><span>

In Figure 1 you have the graph of this equation. In fact, it is an egg curve as you can see, the question is asking for shifting the curve vertically and horizontally, so what you need to do is the following:

First. Shifting the curve horizontally (to the left).<span>

</span>Suppose you want to get the curve when the center of the egg matches with the origin of the Cartesian plane, so you need to shift the curve to the left. To do this add 40 units to the x-coordinate, so:
<span>
</span>[(x+40)^2+y^2]^2=80(x+40)^3+9(x+40)y^2
<span>
</span>This shift is shown in Figure 2

Second. Shifting the curve horizontally (to the right).<span>

</span>Suppose you want to shift the curve 40 units to the right, then you need to subtract 40 units from the x-coordinate like this:
<span>
</span>[(x-40)^2+y^2]^2=80(x-40)^3+9(x-40)y^2
<span>
</span>This shift is shown in Figure 3

Third. Shifting the curve vertically (upward)<span>

</span>Suppose you want to shift the curve 40 units upward, then you need to subtract 40 units from the y-coordinate like this:
<span>
</span>[x^2+(y-40)^2]^2=80x^3+9x(y-40)^2
<span>
</span>This shift is shown in Figure 4

Fourth. Shifting the curve vertically (downward)<span>

</span>Suppose you want to shift the curve 40 units downward, then you need to add 40 units to the y-coordinate like this:
<span>
</span>[x^2+(y+40)^2]^2=80x^3+9x(y+40)^2
<span>
</span>This shift is shown in Figure 5</span>

8 0
3 years ago
A metalworker has a metal alloy that is 30% copper and another alloy that is 65% copper. How many kilograms of each alloy should
LenKa [72]

Step-by-step explanation:

If x is the mass of 30% copper alloy, and y is the mass of 65% copper alloy, then:

x + y = 80

0.30x + 0.65y = 0.51(80)

Solving the system of equations using substitution:

0.30x + 0.65(80 − x) = 0.51(80)

0.30x + 52 − 0.65x = 40.8

11.2 = 0.35x

x = 32

y = 80 − x

y = 48

The metalworker needs 32 kg of 30% copper alloy and 48 kg of 65% copper alloy.

7 0
4 years ago
How are the graphs of the functions y=2(2)^x and y=2(1.1)^x similar?
Volgvan
If the are equal then they can be similar, otherwise they are not.
4 0
3 years ago
Read 2 more answers
Can someone explain to me how to solve this please
pashok25 [27]
The statement "y varies directly as x," means that when x increases, y increases by the same factor. In other words, y and x always have the same ratio: y/x =K

it can be written as ---> y=kx

then put in the values to get a common ratio
k= y/x
k1= 11/7
k2= 13/8

therefore, there's no common ratio in the given table
3 0
3 years ago
What is the value of x?<br> Enter your answer in the box.<br> units
sineoko [7]

Answer:

x = 28

Step-by-step explanation:

If a line parallel to one side of a triangle intersects the other two sides of the triangle, then the line divides these two sides proportionally.

Then x/(x +10) = 42/(42 +15)

x(57) = 42(x + 10)

57x = 42x + 420

15x = 420

x = 28

8 0
3 years ago
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