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Anika [276]
3 years ago
6

You are adding two rational numbers with different signs.how can you tell if the sum will be postitive a negative or zero?

Mathematics
1 answer:
Leya [2.2K]3 years ago
4 0
This is the rhyme that I use:

Same signs add and keep. Different signs subtract. Take the sign or the larger number and you will be exact.

If you have any questions than just ask me.
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Help me with questions 3 and 4 please​!
poizon [28]

Answer:

Question 3: x0 = y1

your basically adding 9 for y!

Question 4: x0 = y1

your adding 1 for y!

Hope this helped!

6 0
3 years ago
Read 2 more answers
Mason is plays a game flipping two fair coins. He wins if both coins land heads up. If Mason plays 200 times, how many times sho
ololo11 [35]

Answer:

Mason should win about 50 games

Step-by-step explanation:

There are four possibilities when flipping two coins:

1st coin could be heads (H) or tails (T)

and

2nd coin could be heads (H) or tails (T)

multiply these together and you get 4

the sample space would look like this:

H and H

H and T

T and H

T and T

Mason only wins when there is a head followed by a head. This is 1 out of the four outcomes.  His chances of winning is 1 in 4, or 25%. If mason plays 200 times, you should expect him to win about 25% of the time. 25% of 200 is 50. Mason should win about 50 games.

3 0
4 years ago
Malcom and Ravi races each other. The average of their maximum speeds was 260 km/h. If doubled, Malcom's maximum speed would be
Kay [80]

Answer:

Malcom's maximum speed is 200 km/h

Ravi's maximum speed is 320 km/h

Step-by-step explanation:

First we have to make two equations one that represents the maximum average speed of the 2 together and another that represents the relationship between their maximum speeds

R = Ravi's maximum speed

M = Malcom's maximum speed

(R + M) /2 = 260 km/h

2M = R + 80 km/h

we are going to solve for M in the first equation

(R + M) /2 = 260 km/h

(R + M)  = 260 * 2

M = 520 - R

we replace M with (520 - R) in the second equation

2M = R + 80 km/h

2(520 - R) = R + 80

1040 - 2R = R + 80

1040 - 80 = R + 2R

960 = 3R

960/3 = R

320 = R

replace R with its value in the first equation

M = 520 - R

M = 520 - 320

M = 200

Malcom's maximum speed is 200 km/h

Ravi's maximum speed is 320 km/h

8 0
3 years ago
In Exercises below, is it possible for ABC XYZ and to be similar? Explain your reasoning.
qaws [65]

Answer:

6) No, two angles are not equal

7) yes, two angles are equal

3 0
3 years ago
What is 322 divided by 15 ?
Murrr4er [49]
   Your answer is 21 7/15
3 0
3 years ago
Read 2 more answers
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