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3 years ago

Determine the number of solutions, y=x+2 and x=-1

Mathematics

1 answer:

anyanavicka [17]3 years ago

4 0

There is only one solution.

y = x+2

x = -1

Substitute x = -1 in y = x+2

y=-1+2

y = 1

We only get the single value of y and x so It's clear that there's only one solution.

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Likurg_2 [28]

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dennis mowed his next door neighbors lawn for a handful of dimes and nickels, 80 coins in all. upon completing the job he counte

Serggg [28]

Answer:

52 dimes and 28 nickels

Step-by-step explanation:

n = number of nickels

d = number of dimes

n+d = 80 the number of coins he got

Multiply the number of nickels times .05 plus the number of dimes times .10 to equal the amount of money he got

.05n + .10d = 6.60

Divide this equation by .05

.05n/.05 + .10/.05 = 6.60/.05

n + 2d = 132

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Multiply by -1

-n-d=-80

Add this to n+2d = 132

n+2d=132

-n-d=-80

-------------------

d = 52

Now we need to solve for n

n+d = 80

n+52 = 80

Subtract 52 from each side

n+52-52= 80-52

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3 years ago