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kakasveta [241]
2 years ago
11

Can someone please answer. There is a picture. There is only one question. Thank you so much

Mathematics
1 answer:
Sloan [31]2 years ago
3 0
So than you check this graph so you see that the radius has a length of 4 units 
from what result that thet x^2 +y^2 =4 

so the choice 3rd is right sure 
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Write an expression from the description. Then
vodka [1.7K]

(-36 ÷ -4) + 9

The expression equals 18.

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3 years ago
Assume that 200 babies are born to 200 couples treated with the XSORT method of gender selection that is claimed to make girls m
JulsSmile [24]

Answer:

a) test statistic = 2.12

b) p-value = 0.017

c) we reject the Null hypothesis

Step-by-step explanation:

Given data :

N = 200

girls (x) = 115 , Boys = 85

p = x / n = 115 / 200 = 0.575

significance level ( ∝ ) = 0.1

<em>aim : test whether the proportion of girls births after the treatment is greater than 50% that occurs without any treatment </em>.

<u>A) Determine the test statistic </u>

H0 : p = 0.5

Ha : p > 0.5

to determine the test statistic we will apply the z distribution at ( ∝ ) = 0.1

Z - test statistic = ( 0.575 - 0.5)  / \sqrt{0.5*0.5 / 200}  = 2.12

<u>b) determine the p-value</u>

The P-value can be determined using the normal standard table

P-value = 1 - p(Z< 2.12 )  =  1 - 0.9830 = 0.017

c) Given that the p value ( 0.017 ) < significance level ( 0.1 )

we will reject the H0 because there is evidence showing that proportion of girls birth is > 50%

3 0
3 years ago
Help pls ASAP <br> SOLVING QUADRATIC EQUATIONS BY FACTORING
DIA [1.3K]

Answer:

Down, Down, Right, Right, diagonal left, up, right

Step-by-step explanation:

Not gonna do every equation here tho lol

7 0
3 years ago
-11= x-3/2....................................
Alika [10]

Answer:

Hi! The correct answer is x=-19/2

Step-by-step explanation:

<em><u>~Solve for x by simplifying both sides of the equation, then isolating the variable~</u></em>

4 0
2 years ago
What is the factored form of each expression?<br><br> 20x + 35y
Tasya [4]
The factored form of 20x+35y would be 5(4x+7y). If you use the distributive property of multiplication, you can see that the expression has not changed. 
5 0
3 years ago
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