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mylen [45]
4 years ago
5

I literally dont understand this at all please help

Mathematics
1 answer:
wariber [46]4 years ago
5 0
Nobody is going to answer all that for 10 points lol
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How many solutions exist for the following system of equations: 4x + y = 7 and 3x - y = 0 a. no solution b. one solution c. infi
Zanzabum
4x+y=7 \\
\underline{3x-y=0} \\
4x+3x=7+0 \\
7x=7 \ \ \ |\div 7 \\
x=1 \\ \\
3x-y=0 \\
3 \times 1-y=0 \\
3-y=0 \ \ \ |+y \\
y=3 \\ \\
(x,y)=(1,3)

The answer is B. one solution.
6 0
4 years ago
In a recent survey of favorite sodas 7 students chose coke. If these students represent 17.5% of the students surveyed, how many
katovenus [111]

Answer:

40

Step-by-step explanation:

7 = 17.5% × Y

STEP 2 7 =

17.5

100

× Y

Multiplying both sides by 100 and dividing both sides of the equation by 17.5 we will arrive at:

STEP 3 Y = 7 ×

100

17.5

STEP 4 Y = 7 × 100 ÷ 17.5

STEP 5 Y = 40

8 0
3 years ago
Which equation can be used to solve the problem 180 is 40% of what number
Kruka [31]

Answer:

40/100 * x = 40

Solve for x. Hope this helps

6 0
4 years ago
Read 2 more answers
Write the equation of the line that passes through the given points in slope intercept form
shepuryov [24]

Answer:

y=3x

Step-by-step explanation:

To put this in slope intercept form, let’s first find the slope

To find slope, use the equation Y2-Y1/X2-X1

When we do this, we get 0-6/0-2

This simplifies out into -6/-2 which is 3

So our slope is 3. Our equation becomes y=3x+b

Now, we find our b

We don’t have to do any solving for this, since we have the point 0,0 listed for us, it goes through the origin and that is our y-intercept or b

So our final equation is y=3x

Hope this helps and have a good day!

5 0
2 years ago
Read 2 more answers
What is 3n+2n simplified
Ber [7]
The answer for this is n(3+2)
8 0
4 years ago
Read 2 more answers
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