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hoa [83]
3 years ago
6

7x + y = 13 4x – 4y = -20

Mathematics
2 answers:
aalyn [17]3 years ago
5 0

Answer: (x,y) = (1,6)

Step-by-step explanation:

xxMikexx [17]3 years ago
3 0
Solve by using substitution method: answer: (X , Y) = (1 , 6)
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A survey of 96 students on campus showed that 29 read the Campus Observer student newspaper that morning, 24 read the news via t
77julia77 [94]

Answer:

Step-by-step explanation:

Part 1

(a) How many read the Internet news or local paper but not both?

There are 25

students who read the Internet news or local paper but not both.

Part 2

(b) How many read the Internet news and the local paper but not the Campus Observer?

There are 3

students who read the Internet news and the local paper but not the Campus Observer.

Part 3

(c) How many read the Internet news or the Campus Observer or both?

There are 65

students who read the Internet news or the Campus Observer.

6 0
4 years ago
With a fair die, the probability of rolling any number 1 through 6 is the same.
yaroslaw [1]
The probability of all possible outcomes is always 1, meaning 100%.

In this case the probability of rolling a 1,2,3,4,5, or 6 is:

1/6+1/6+1/6+1/6+1/6+1/6

6(1/6)

6/6

1
7 0
3 years ago
Read 2 more answers
Do anyone know <br> x+2=-14-x
Yanka [14]

Answer:

x=-8

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
10) Spike drives for 50 miles at 60mph. He slows down and travels
Anettt [7]

Answer:

2 1/3 hours or 2 hours 20 minutes.

51.4 mph to 1 decimal place.

Step-by-step explanation:

Time = distance  speed

First 50 miles time taken = 50 / 60  = 5/6 hours

Second 50 miles  -  time  =  50/40 = 5/4 hours.

Final 20 miles - time taken =  20 / 80 = 1/4 hours.

Total time taken = 5/6 + 5/4 + 1/4

= 5/6 + 6/4

= 10/12 + 18/12

= 28/12

=  7/3 or 2 1/3 hours or 2 hours 20 minutes.

Average speed = total distance / total time

=  120 / 7/3

= 120 * 3/7

=  51.4 mph to 1 decimal place.

6 0
3 years ago
The ratio of Naomi's pencils to Morgan's pencils is 3:4. If Morgan has 16 pencils, how many pencils do they have altogether?
pogonyaev
The answer would be 30 they have 30 pencils altogether. If the ratio is 3:4 and morgan has 16 pencils that means it was simplified by 4 . so if you times 3 times 4 then add 16 you will get the over all question
6 0
4 years ago
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