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olga nikolaevna [1]
2 years ago
10

If y + 7 = 9, what does y equal? +

Mathematics
1 answer:
asambeis [7]2 years ago
7 0
Y=2
If you subtract 9-7 you get the answer 2 which makes y=2.
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2x+y=5 y=x−1 system of equations please show your work
Bad White [126]

sub y = x - 1 into equation 1

2x + x - 1 = 5

3x = 6

x = 2

sub x = 2 into equation 2

y = 2 - 1

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4 0
3 years ago
-5n-8(1+7n)=-8<br> Solve this equation
Arisa [49]

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it's 0

Step-by-step explanation:

5 0
2 years ago
A 95% confidence interval for the mean of a population is to be constructed and must be accurate to within 0.3 unit. A prelimina
serious [3.7K]

Answer:

Sample size should be atleast 617

Step-by-step explanation:

given that a 95% confidence interval for the mean of a population is to be constructed and must be accurate to within 0.3 unit.

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7 0
3 years ago
I need the answer fast
Fantom [35]

Answer:

B. What was the highest temperature this month?

Step-by-step explanation:

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B. is the easiest one to answer, as you simply will have to look for the greatest number within the set, and that will be the answer.

A. is too broad, and does not imply that only the "high temperature" is needed, rather just a leveled temperature within day in that month.

C. is the opposite of what Rory had recorded, and without data, he cannot answer it.

D. is answerable as well, but, again, the only temperature recorded is the high temperature. Temperature can fluctuate depending on the time of the day, and can be in the 50s one hour and the 90s in another.

~

5 0
2 years ago
Can you please help me with this one? ​
viva [34]

Answer: y=38

x=38

z=109

Step-by-step explanation:

because

4 0
3 years ago
Read 2 more answers
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