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3 years ago

Someone PLEASE help me with these 2 questions?? thank you!

Mathematics

1 answer:

Alexxandr [17]3 years ago

7 0

Answer:

40. D. 5x-14

Step-by-step explanation:

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Please answer CORRECTLY !!!!!!!!! Will mark brainliest !!!!!!!!!!

Orlov [11]

-4x -6 = -5y + 2
5y = 4x + 6 + 2
5y = 4x + 8
Y = g(x) = 4/5x + 8/5

7 0

4 years ago

A college student organization wants to start a nightclub for students under the age of 21. To assess support for this proposal,

eduard

Answer:

a) Sample size = 822

b) Margin of error = 0.03407

Step-by-step explanation:

We are given the following in the question:

p = 74% = 0.74

a) Sample size is required to obtain margin of error of 0.03

Formula:

$\text{Margin of error} = z_{\text{statistic}}\times \sqrt{\dfrac{p(1-p)}{n}}}$

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

Putting values, we get,

$0.03 = 1.96\times \sqrt{\dfrac{0.74(1-0.74)}{n}}\\\\n = (\dfrac{1.96}{0.03})^2(0.74)(1-0.74)\\\\n = 821.24 \approx 822$

Thus, the sample size must be approximately 822 to obtain a 95% confidence interval with an approximate margin of error of 0.03

b) Margin of error for the 95% confidence interval

p = 54% = 0.54

Formula:

$\text{Margin of error} = z_{\text{statistic}}\times \sqrt{\dfrac{p(1-p)}{n}}}$

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

Putting values, we get,

$\text{Margin of error} = 1.96\times \sqrt{\dfrac{0.54(1-0.54)}{822}}\\\\=0.03407$

The margin of error now will be 0.03407.

5 0

4 years ago

A sandwich shop offers 3 rypes of bread and 4 types of meat. How many different sandwiches consisting of 1 type of bread and 1 t

lisabon 2012 [21]

So if theres 3 rypes of bread and 4 type of meat u just have to multiply 3×4 gives u 12
Answer : u can make 12

7 0

3 years ago

How do you write 25/45 as a ratio

Gwar [14]

It is 5:9 in simplest form

3 0

3 years ago

Read 2 more answers

For moving object the force acting on the object varies directly with the object acceleration when a force of 36 in acts on a ce

Reptile [31]

Answer:

4m/s²

Step-by-step explanation:

Given that:

Force F is directly proportional to acceleration a

F α a

F = ka

Where k is the constant of proportionality

36 = 6k

Solve for K

36 = 6k

k = 36/6

k = 6

If force = 24 ; acceleration =

24 = ka

k = 6

24 = 6a

a = 24/6

a = 4m/s²

4 0

3 years ago