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RUDIKE [14]
3 years ago
9

S

Mathematics
1 answer:
lorasvet [3.4K]3 years ago
7 0

Answer:

A. 3:30 pm

Step-by-step explanation:

45 + 25 = 70 --> 1 hour 10 minutes

4:40 minus 1 hour 10 minutes --> 3:30

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331 students went on a field trip. Six buses
slamgirl [31]
54 students in each bus. 

Step#1 Subtract 7 from the total of students, the answer is 324
Step#2 Divide 324 by 6, the answer is 54

Therefore the answer is 54 students, hope that helped. <span />
8 0
3 years ago
Nori had 2 bags of apples. He used 1. bags of apples to make pies. How
Inessa05 [86]

Answer:

8/12 left

Step-by-step explanation:

8/12 of a bag left

2 1/12 = 25/12

1 5/12 = 17/12

25-17 = 8

The answer is 8/12

5 0
3 years ago
Read 2 more answers
Solve the system using a matrix. NEED HELP ASAP!!:):)
icang [17]

1,-4 sorry if wrong :(

7 0
3 years ago
Read 2 more answers
Which phrase describes an unknown or changeable quantity?
Flura [38]

Answer:

That is a variable.

Step-by-step explanation:

- opposed to a constant which is known and does not change.

3 0
2 years ago
In Exercises 23–36, solve the system using either Gaussian elimina- tion with back-substitution or Gauss-Jordan elimination. 23.
Luba_88 [7]

Answer:

23) x= 3, y = 4

24) Any (x,y) values where x = 1.5 - 2y

Step-by-step explanation:

For the first system(23), it goes like this

[1 2 | 7]

[2 1 | 8]

We need to do L2 = L2 - 2L1, so now it is

[1 2   | 7]

[0 -3 |-6]

So, now we have:

-3y = -6 *(-1)

3y = 6

y = 2

x + 2y = 7

x + 4 = 7

x = 3

Now for system 24, we have:

[-1 2 | 1.5]

[2 -4| 3]

We do L2 = L2 + 2L1, so we have:

[-1 2 | 1.5]

[0 0| 0]

So there are infinite solutions for this system. The solution for this system will be each (x,y) pair where x = 1.5 - 2y.

5 0
3 years ago
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