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alisha [4.7K]
3 years ago
5

How many solutions does the system 2y=10x-14 and 5x-y=7 have ?

Mathematics
1 answer:
Alla [95]3 years ago
7 0
I find it of tremendous use to convert to the slope intercept form to easily visualize the lines.  The first is:
y = 5x - 7  [Dividing both sides by 2] and the second is:
-y = -5x + 7  [Subtracting 5x from each side]
y = 5x - 7 [Dividing each side by -1]

These two equations represent the same line.  If the lines were parallel, there would be no solution.  If the lines intersected, there would be only one unique solution satisfying both equations (the point of intersection).

In this case, where the two equations represent the same line, the number of solutions is infinite.

The answer is:  <span>∞

</span>
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Answer:

17

Step-by-step explanation:

if they lose 4 yard per 3 play then u just subtract 4 from 25 and then what every the answer is for that u subtract another 4

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Brian pays £465.98 a year on his car insurance. The insurance company reduces the price by 3.6%.How much does the insurance cost
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Answer:

The correct answer is £449.20 rounded upto 2 DP.

Step-by-step explanation:

Brian pays £465.98 a year on his car insurance.

The insurance company reduces the price by 3.6%.

The amount reduced by the insurance company is 3.6% of 465.98 = £16.77528.

Price the insurance company charges now is given by subtracting the previous cost with the reduction amount.

Thus the insurance cost now = £ (465.98 - 16.77528) = £449.20472 ≈ £449.20.

Thus the reduced insurance cost Brian has to pay now is £449.20 rounded to 2DP.

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3 years ago
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You are creating bracelets and then selling them to your friends at a 85% markup rate. If it costs you $1.80 to create the brace
posledela

Answer:

you will add $1.53 to every bracelet you make

Step-by-step explanation:

figure out what 85 percent of 1.80 is and then add that to 1.80 for the total price

85% x 1.8 = 1.53 (markup ammount)

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Answer:

y-6=3/2(x+8)

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