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Stella [2.4K]
3 years ago
11

-2y + x = 8 3y + 2x = 2 solve using substitution please show work

Mathematics
1 answer:
Inessa [10]3 years ago
4 0

Answer:

x=4,y=−2

Step-by-step explanation:

1 Solve for x in -2y+x=8

x=8+2y

2 Substitute x=8+2y into 3y+2x=2

7y+16=2

3 Solve for y in 7y+16=2

y=-2

4 Substitute y=-2 into x=8+2y

x=4

5 Therefore,

​x=4

​y=−2

​​

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The odds against Carl beating his friend in a round of golf are 7:5. Find the probability that carl will beat his friend.
Leya [2.2K]

Answer:

\frac{5}{12}

Step-by-step explanation:

In other words, carl's losing odds are 7 : 5, so his winning odds will be 5 : 7

So if they play (7+5=12) 12 times, carl will win 5 times.

To find probability that carl will beat his friend, we take the probability of Carl winning. Simple!

The probability is  5/ 12

3 0
3 years ago
Petrov ran 7 laps around a track.Each lap around the track is a distance of 1/4 mile. What is the total distance Petrov ran in f
Alla [95]

Answer:

9240 feet

Step-by-step explanation:

Petrov ran 7 laps around a track.Each lap around the track is a distance of 1/4 mile.

Step 1

The total distance Petrov ran in miles is calculated as:

1 lap = 1/4 mile

7 laps = x mile

Cross Multiply

x = 7 × 1/4 mile

x = 1.75 miles

Step 2

What is the total distance Petrov ran in feet?

1 mile = 5280 feet

1.75 miles = x

Cross Multiply

x = 1.75 × 5280 feet

x = 9240 feet

Therefore, the total distance Petrov ran in feet is 9240 feet

3 0
4 years ago
The price of a gallon of unleaded gas was $2.85 yesterday. Today, the price fell to $2.79. Find the percentage decrease. Round y
alukav5142 [94]

Step-by-step explanation:

2.85-2.79 is 0.06

0.06/2.85 X 100 is 2.1% decrease

3 0
4 years ago
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Karo-lina-s [1.5K]

Answer: oh that easy. The first one goes to the bottom right and the third one goes to the bottom left and the 4th one goes to the middle the 2nd one goes to the bottom right and the last one goes to the middle. :) have a nice day!

Step-by-step explanation:

6 0
3 years ago
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Zolol [24]

Answer:

The answer is B hope this helped

Step-by-step explanation:

8 0
3 years ago
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