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aev [14]
3 years ago
12

james is in charge of the decorations. he has a total budget of $50 dollars to spend for all of the decorations. James spends $2

0 on one banner and would like to buy balloons that cost $2 each with the rest of money. How many balloons can James buy?​
Mathematics
2 answers:
DedPeter [7]3 years ago
7 0

Answer:

15

Step-by-step explanation:

30 divided by 2 = 15

Basile [38]3 years ago
5 0

Answer:

Hi there!

Your answer is:

James can buy 15 balloons

Step-by-step explanation:

20 + 2x = 50$

-20

2x = 30$

/2

x= 15$

Plug back in to check yourself!

20+ 2(15) = 50

20 + 30 = 50

50 = 50

I hope this makes sense!

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Solve the following system of equations. Enter the y-coordinate of the solution. Round your answer to the nearest tenth.
lakkis [162]
\sf 5x+2y=21
\sf -2x+6y=-34

We could solve for 'x' in the 2nd equation and then plug that into the first equation for 'x' and solve for 'y':

\sf -2x+6y=-34

Subtract 6y to both sides:

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Divide -2 to both sides:

\sf x=3y+17

Plug in 3y + 17 for 'x' in the first equation:

\sf 5x+2y=21

\sf 5(3y+17)+2y=21

Distribute 5:

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Combine like terms:

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Subtract 85 to both sides:

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Divide 17 to both sides:

\boxed{\sf y\approx -3.8}

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3 years ago
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Are the graphs of 2x+7y=6 and 7y = 2x +6 parallel? Explain.
avanturin [10]
With questions like this (to see if theyre parallel), all you have to do is see if lines have a congruent slope. if yes (ex: 2 and 2), then they are parallel. if the slopes are opposites (ex: 4 and -1/4), then they are perpendicular. If they have no such relation (ex: -3 and 1/7), then they are neither.

with this problem, find the slope by separating the same variable in each equations, like this:

2x + 7y = 6
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(the second equation is already separated) so now we have

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since -2 does NOT equal 2, these two graphs/lines are NOT parallel.
Hope this helped!
7 0
3 years ago
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