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PilotLPTM [1.2K]
3 years ago
6

Using the linear combination method, what is the solution to the system of linear equations 7x-2y=-20 and

Mathematics
1 answer:
marissa [1.9K]3 years ago
5 0

Answer:

7x -2y + 20 =0 and 9x + 4y + 6 =0 are the solutions to the answer

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Tom saves 35% of his salary . Jerry spends 3/5 of his salary and saves rthe rest of his salary work out who saves the most money
NikAS [45]

Answer:

jerry 5% saves more than tom

Step-by-step explanation:

tom saves 35%

and jerry saves 40%

3 0
3 years ago
What is the value of y?
NNADVOKAT [17]

Answer:

y = 40

Step-by-step explanation:

Lets make an equation to represent the sum of the angles:

We know that the sum of angles of triangles equals 180 degrees. So based on this knowledge, the equation is :

2y + y + 10 + 50 = 180


Now we simplify:

2y + y = 3y


10 + 50 = 60


So our new equation is 3y + 60 = 180

Now all we have to do is simplify:

3y + 60 = 180

3y + 60 -60 = 180 - 60

3y = 120

3y / 3 = 120 / 3

y = 40


So the answer is 40 hope this helped


7 0
3 years ago
A compass draws all points that are equidistant from a fixed point, thereby creating a Locus of points for a circle
sergey [27]
Answer is true hope this helps
3 0
3 years ago
Graph y= 2/3x-4<br><br> How do I graph this?
umka21 [38]

Answer:

Read below !!

Step-by-step explanation:

Since you are already given the full equation, you would just follow the steps of plotting a line! I start usually by plotting the y-intercept, which is always on the y-axis. In this case, that would be -4 ! You mark -4 on the line, and from there, you would use RISE/RUN to find out the slope of the line. Since it's 2/3, you would rise 2, and go to the right 3, all from the point -4. You should do that about two times in order to get your line !!

I hope this helps !!

6 0
2 years ago
If f(x) = 4 – x2 and g(x) = 6x, which expression is equivalent to (g – f)(3)?
tatiyna
F(x) = 4 - x²    g(x) = 6x

(g - f)(x) = g(x) - f(x)

(g - f)(3) = g(3) - f(3)

g(x) = 6x

g(3) = 6*3 = 18

f(x) = 4 - x²

f(3) = 4 - 3² = 4 - 9 = -5

(g - f)(3) = g(3) - f(3) = 18 - (-5) = 18 + 5 = 23

 (g - f)(3) = 23
7 0
3 years ago
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