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WITCHER [35]
3 years ago
11

I need help please!!!

Mathematics
1 answer:
galben [10]3 years ago
3 0

Answer:

Y= 3

Step-by-step explanation:

When the line hits - 1

The y axis shows that its 3

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Please help if you can:)
geniusboy [140]

Answer:

(-2,17) i think i am not sure

Step-by-step explanation:

8 0
3 years ago
If (x+3)÷ 3 = 9 what is x
Sveta_85 [38]

Answer:

x = 24

Step-by-step explanation:

9*3 = 27

27 - 3 = 24

x = 24

7 0
2 years ago
Read 2 more answers
North shore bikes rents bikes for $10 plus $4 per hour. Vinnie paid $30 to rent a bike define a variable then write and solve an
ale4655 [162]

Answer:

Step-by-step explanation:

vinnie payed rent for 5 total hours plus the bike itself so 4x5=20

answer 5 hours

5 0
2 years ago
Expand (2x+ 3)² Please guys​
PSYCHO15rus [73]

Answer:

4x^2 + 12x + 9.

Step-by-step explanation:

(2x+3)^2

= (2x+3)(2x+3)

= 2x(2x+3)+3(2x+3)

= 4x^2 + 6x + 6x + 9

= 4x^2 + 12x + 9.

3 0
2 years ago
1. The 2006 General Social Survey contains information on the number of hours worked by a respondent each week. The mean number
Vilka [71]

Answer:

A)σ_M = 1.2634

B) CI = (36.564, 41.516)

C) σ_M = 0.1151

Step-by-step explanation:

A) Formula for standard error is;

σ_M = σ/√n

We are given;

Mean; x¯ = 39.04

Standard deviation; σ = 11.51

Sample size; n = 83

Thus;

Standard error; σ_M = 11.51/√83

σ_M = 1.2634

B) formula for confidence interval is;

CI = x¯ ± z(σ_M)

z is critical value

At 95% Confidence interval, z = 1.96

Thus;

CI = 39.04 ± 1.96(1.2634)

CI = (39.04 + 2.476) and (39.04 - 2.476)

CI = (36.564, 41.516)

C) sample size is now increased to 10000

Thus,standard error is calculated as;

σ_M = 11.51/√10000

σ_M = 0.1151

8 0
2 years ago
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