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3 years ago

WILL GIVE BRANLIEST TO BEST ANSWER. 25 POINTS!

Mathematics

1 answer:

Likurg_2 [28]3 years ago

4 0

Answer:

if the x is supposed to be squared, the coordinates are (3,2)

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What change is taking place on this graph?

IceJOKER [234]

Answer:

its d (an increase in demand)

Step-by-step explanation:

5 0

3 years ago

HELP? I don't understand at all!!

ivanzaharov [21]

I do not know at all I am sorry

8 0

3 years ago

HELP!! PLEASE!!! THANK YOU!!

Blizzard [7]

Answer:

C. 8x - 3y = 5

Step-by-step explanation:

7 - 3(x - y) = 5x + 2

Standard form: Ax + By = C

7 -3x + 3y = 5x + 2

7 -8x + 3y = 2

-8x + 3y = -5

Divide by -1 to each number

8x - 3y = 5

6 0

3 years ago

If we wanted to create a new 90% confidence interval from a different sample for the proportion of those with a two on one date

slava [35]

Answer: 271

Step-by-step explanation:

The formula we use to find the sample size is given by :-

$n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2$

, where $z_{\alpha/2}$ is the two-tailed z-value for significance level of $(\alpha)$

p = prior estimation of the proportion

E = Margin of error.

If prior estimation of the proportion is unknown, then we take p= 0.5 , the formula becomes

$n=0.5(1-0.5)(\dfrac{z_{\alpha/2}}{E})^2$

$n=0.25(\dfrac{z_{\alpha/2}}{E})^2$

Given : Margin of error : E= 0.05

Confidence level = 90%

Significance level $\alpha=1-0.90=0.10$

Using z-value table , Two-tailed z-value for significance level of $0.10$

$z_{\alpha/2}=1.645$

Then, the required sample size would be :

$n=0.25(\dfrac{1.645}{0.05})^2$

Simplify,

$n=270.6025\approx271$

Hence, the required minimum sample size =271

3 0

3 years ago

You can buy 7 pillows at jensen's for the same price that you can buy 6 pillows at harrison's. If one pillow costs $21.21 at har

kotykmax [81]

$21.21 × 6 = $127.26

$127.26 ÷ 7 = $18.18 cost of 1 pillow at Jenson's.

You multiply the cost of the pillow at Harrison's, $21.21, by the amount of pillows you can buy at Harrison's, 6.
Then divide the answer by the amount of pillows you can buy at Jenson's, 7. The final answer is the cost of 1 pillow at Jenson's.

7 0

3 years ago

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