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3 years ago

10

Can someone please help me with the assignment, I'm almost finish!

2 answers:

nignag [31]3 years ago

7 0

Answer:

The answer is the 2nd box down, 20x⁷

Crank3 years ago

5 0

Answer:

20x7

Step-by-step explanation:

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Which equation of a line passes through the points (3,-1) and (6,1)

Law Incorporation [45]

Again? Ok, we'll use point slope form this time;

Slope is change in y over change in x,

m = (1 - -1)/(6 - 3) = 2/3

y + 1 = (2/3)(x - 3)

y = (2/3)x - 3

Answer: y = (2/3)x - 3

4 0

3 years ago

Can u help with all the questions plz i will mark you as brainliest

stellarik [79]

Decimal answers:

1. 0.3
2. -0.25
3. 0.25
4. -0.75
5. -0.35
6. -1.75
7. -0.09
8. -0.52
9. -1.73
10. 0.43

fraction answers:

1. 3/10
2. -1/4
3. 1/4
4. -3/4
5. -7/20
6. -1 3/4
7. -9/100
8. -13/25
9. -1 73/100
10. -43/100

6 0

4 years ago

Read 2 more answers

The following results come from two independent random samples taken of two populations.

photoshop1234 [79]

Answer:

$(a)\ \bar x_1 - \bar x_2 = 2.0$

$(b)\ CI =(1.0542,2.9458)$

$(c)\ CI = (0.8730,2.1270)$

Step-by-step explanation:

Given

$n_1 = 60$ $n_2 = 35$

$\bar x_1 = 13.6$ $\bar x_2 = 11.6$

$\sigma_1 = 2.1$ $\sigma_2 = 3$

Solving (a): Point estimate of difference of mean

This is calculated as: $\bar x_1 - \bar x_2$

$\bar x_1 - \bar x_2 = 13.6 - 11.6$

$\bar x_1 - \bar x_2 = 2.0$

Solving (b): 90% confidence interval

We have:

$c = 90\%$

$c = 0.90$

Confidence level is: $1 - \alpha$

$1 - \alpha = c$

$1 - \alpha = 0.90$

$\alpha = 0.10$

Calculate $z_{\alpha/2}$

$z_{\alpha/2} = z_{0.10/2}$

$z_{\alpha/2} = z_{0.05}$

The z score is:

$z_{\alpha/2} = z_{0.05} =1.645$

The endpoints of the confidence level is:

$(\bar x_1 - \bar x_2) \± z_{\alpha/2} * \sqrt{\frac{\sigma_1^2}{n_1}+\frac{\sigma_2^2}{n_2}}$

$2.0 \± 1.645 * \sqrt{\frac{2.1^2}{60}+\frac{3^2}{35}}$

$2.0 \± 1.645 * \sqrt{\frac{4.41}{60}+\frac{9}{35}}$

$2.0 \± 1.645 * \sqrt{0.0735+0.2571}$

$2.0 \± 1.645 * \sqrt{0.3306}$

$2.0 \± 0.9458$

Split

$(2.0 - 0.9458) \to (2.0 + 0.9458)$

$(1.0542) \to (2.9458)$

Hence, the 90% confidence interval is:

$CI =(1.0542,2.9458)$

Solving (c): 95% confidence interval

We have:

$c = 95\%$

$c = 0.95$

Confidence level is: $1 - \alpha$

$1 - \alpha = c$

$1 - \alpha = 0.95$

$\alpha = 0.05$

Calculate $z_{\alpha/2}$

$z_{\alpha/2} = z_{0.05/2}$

$z_{\alpha/2} = z_{0.025}$

The z score is:

$z_{\alpha/2} = z_{0.025} =1.96$

The endpoints of the confidence level is:

$(\bar x_1 - \bar x_2) \± z_{\alpha/2} * \sqrt{\frac{\sigma_1^2}{n_1}+\frac{\sigma_2^2}{n_2}}$

$2.0 \± 1.96 * \sqrt{\frac{2.1^2}{60}+\frac{3^2}{35}}$

$2.0 \± 1.96* \sqrt{\frac{4.41}{60}+\frac{9}{35}}$

$2.0 \± 1.96 * \sqrt{0.0735+0.2571}$

$2.0 \± 1.96* \sqrt{0.3306}$

$2.0 \± 1.1270$

Split

$(2.0 - 1.1270) \to (2.0 + 1.1270)$

$(0.8730) \to (2.1270)$

Hence, the 95% confidence interval is:

$CI = (0.8730,2.1270)$

8 0

3 years ago

D = 3xy − y I will MARK BRAINLIESTTTTTTTTTTT ASAP PLEAAAAASSSSSSEEEEEE

Ugo [173]

Answer:

Since

3

y

is constant with respect to

x

, the derivative of

3

x

y

with respect to

x

is

3

y

d

d

x

[

x

]

.

3

y

d

d

x

[

x

]

Differentiate using the Power Rule which states that

d

d

x

[

x

n

]

is

n

x

n

−

1

where

n

=

1

.

3

y

⋅

1

Multiply

3

by

1

.

3

y

Step-by-step explanation:

8 0

4 years ago

Determine the domain of the function.

AnnyKZ [126]

It it is the first choice i mentioned then B is the answer.

7 0

4 years ago

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