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Kisachek [45]
2 years ago
6

Solve the system of equations by substitution.

Mathematics
1 answer:
german2 years ago
5 0

Answer:A

Step-by-step explanation: Hope this helped. Let me know if it did.

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a school held a tennis tournament. after each round one fourth of the players were eliminated. if there were 64 players at the s
Sveta_85 [38]

Answer:

If there are 32 teams in the tournament and 1 winner, there were 31 games. So, 63 - 31 = 32 games.

 

8 0
2 years ago
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In order to estimate the mean amount of time computer users spend on the internet each​ month, how many computer users must be s
levacccp [35]

Answer:

1877 computer users

Step-by-step explanation:

We have that for 95% of confident, the value of z has a value of 1.96 (attached table about it), they also mention the margin of error (E) that is 10 and finally the standard deviation (sd) that has a value of 221.

We apply the following formula:

n = [z * sd / E] ^ 2

replacing:

n = [1.96 * 221/10] ^ 2

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2 years ago
During a debate Bonnie used 9 minutes to present her opinion 6 minutes to rebut the opposing opinion and 5 minutes to summarize
Zina [86]

Answer:

she spent like 40% of her time easy

Step-by-step explanation:

that was like 3rd grade

8 0
2 years ago
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Piz help me fast asap thx​
Effectus [21]

Answer:

y= 7703.5

Step-by-step explanation:

multiply 7100 by 1.085

5 0
3 years ago
What is the area of a parallelogram if is length is x+1 and height is x+8?
Irina-Kira [14]

Answer:

8 square units

Step-by-step explanation:

x + 1 = 0

x = -1

x + 8 = 0

x = -8

Area = (-1) * (-8) = 8 square units

3 0
2 years ago
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