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Elena L [17]
2 years ago
15

Simplified expression of 7z + 8 + 5z – 5z – 9?

Mathematics
1 answer:
Likurg_2 [28]2 years ago
6 0

Answer:

7z-1 hope this helps

Step-by-step explanation:

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Jordi trains on his bicycle by riding for a total of 300 miles each week
Katen [24]
Y = 300 (miles) * x (independent variable)
I hope this satisfies you.
7 0
3 years ago
Explain why x squared = 16 has two solutions. What are the solutions.
BabaBlast [244]
A negative number * another negative number gives a positive value

A positive number * another positive number also gives a positive value

The solutions are -4, 4


Hope this helps :)
3 0
2 years ago
Liana's class was going on a very exciting school trip, but when Liana got to school, the school bus had already left! Frantic,
Llana [10]

Answer:

  • <u>They can catch up with the bus at 10:40 am.</u>

Explanation:

1. Set the time when Liana and her mother can leave (8:40 am) as t₀ = 0; thus the time of driving for them will be t.

2. The average speed at whic Liana's mother drive: 60 miles/hour

3. Thus, the distance they will have driven will be:

  • distance = average speed × time = 60t

4. The time the bus left was 8:00 am, which is 40 minutes before Liana and her mom can leave.

Thus, the time wil have driven when Liana and her mom have driven t hours  minutes will be: t + 40 min / 60 min/ hour = t + 2/3

5. The average speed of teh bus is 45 miles / hour

6. The distance the bus will have driven will be:

  • distance = average speed × time = 45(t + 2/3)

7. When Liana and her mother catch up with the bus, the distances driven by both of them are equal:

  • 60t = 45(t + 2/3)
  • 60t = 45t + 30
  • 60t - 45t = 30
  • 15t = 30
  • t = 30/15 = 2

Thus, Liana and her mom can catch up with the bus after 2 hours, since 8:40 am; this is, 10:40 am.

5 0
3 years ago
-5w = -24.5 what is it. ​
pav-90 [236]

Answer:

w=4.9

Step-by-step explanation:

If you are solving for w, you want to isolate the variable. If it is easier to write it out, it would look something like this..

-5 x w = -24.5

To get w by itself, use the inverse of multiplication, which is division. Divide the expression to the left of the equal sign by -5. Remember, what you do to one side, you must do to the other. When you divide -24.5 by -5, you end up with

w=4.9

6 0
3 years ago
Mark wants to buy a new lap top computer. He finds one that was priced
Pachacha [2.7K]
The total for the laptop would then be 900$
5 0
2 years ago
Read 2 more answers
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