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pishuonlain [190]
3 years ago
9

Determine the position of a given value.

Mathematics
1 answer:
kolezko [41]3 years ago
7 0
-58=-3+(n+1)(-5) 

-58=-3-5n+5 

-58=2-5n 

-60=-5n 

-60/5=-5n/5 

n=12 

-58 \ is \  in \ the \ 12th \ position
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Read the passage.
alexandr1967 [171]

Answer:

D sentence 5

Step-by-step explanation:

6 0
3 years ago
Please please help mane :((( give explanation plsss :(((
Deffense [45]

Answer:

2x - 1 > 4x + 6 \\ 2x - 2x - 1 > 4x - 2x + 6 \\  - 1 > 2x + 6 \\  - 6 - 1 > 2x \\  - 7 > 2x \\  \frac{ - 7}{2}  > x

I hope I helped you^_^

3 0
3 years ago
A College Alcohol Study has interviewed random samples of students at four-year colleges. In the most recent study, 494 of 1000
Vinil7 [7]

Answer:

The 95% confidence interval for the difference between the proportion of women who drink alcohol and the proportion of men who drink alcohol is (-0.102, -0.014) or (-10.2%, -1.4%).

Step-by-step explanation:

We want to calculate the bounds of a 95% confidence interval of the difference between proportions.

For a 95% CI, the critical value for z is z=1.96.

The sample 1 (women), of size n1=1000 has a proportion of p1=0.494.

p_1=X_1/n_1=494/1000=0.494

The sample 2 (men), of size n2=1000 has a proportion of p2=0.552.

p_2=X_2/n_2=552/1000=0.552

The difference between proportions is (p1-p2)=-0.058.

p_d=p_1-p_2=0.494-0.552=-0.058

The pooled proportion, needed to calculate the standard error, is:

p=\dfrac{X_1+X_2}{n_1+n_2}=\dfrac{494+552}{1000+1000}=\dfrac{1046}{2000}=0.523

The estimated standard error of the difference between means is computed using the formula:

s_{p1-p2}=\sqrt{\dfrac{p(1-p)}{n_1}+\dfrac{p(1-p)}{n_2}}=\sqrt{\dfrac{0.523*0.477}{1000}+\dfrac{0.523*0.477}{1000}}\\\\\\s_{p1-p2}=\sqrt{0.000249+0.000249}=\sqrt{0.000499}=0.022

Then, the margin of error is:

MOE=z \cdot s_{p1-p2}=1.96\cdot 0.022=0.0438

Then, the lower and upper bounds of the confidence interval are:

LL=(p_1-p_2)-z\cdot s_{p1-p2} = -0.058-0.0438=-0.102\\\\UL=(p_1-p_2)+z\cdot s_{p1-p2}= -0.058+0.0438=-0.014

The 95% confidence interval for the difference between proportions is (-0.102, -0.014).

7 0
2 years ago
Robin can run 1.71 kilometers in 10 minutes. How far can she run in 1.5 hours?
Flura [38]

Answer:

I think is 15.39 kilometers

Step-by-step explanation:

1 hour=60 minutes +.5 hours =90 minutes = 9 x 1.71 = 15.39

7 0
2 years ago
*URGENT ALGEBRA 2* Anyone know these answers? Will award brainliest.
stiv31 [10]
Correct Answer:
Second option

Solution:
The given sequence is:

2.2, 6.6, 11, ...

If we observe the sequence it is an Arithmetic Sequence as the difference between two consecutive terms is the same.

6.6 - 2.2 = 4.4 
11 - 6.6 = 4.4

First we find the general term for this sequence. 

a(n)= a_{1}+(n-1)d

a_{1}=first term = 2.2
d = 4.4

So,

a(n) = 2.2 +(n-1)*4.4 \\  \\ 
a(n) = 2.2 + 4.4n - 4.4 \\  \\ 
a(n) = 4.4n - 2.2

This general term will be placed inside the summation sign with limits from 1 to 5 to give the sum of first 5 terms of the given sequence. So the correct answer is Second Option
6 0
2 years ago
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