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Verizon [17]
2 years ago
9

5/7 = x/9 help quickly will give brainliest if correct

Mathematics
2 answers:
AysviL [449]2 years ago
5 0

<em>Greetings from Brasil...</em>

Here we will use media products

A/B = C/D ⇔ A · D = B · C

5/7 = X/9 ⇔ 7 · X = 5 · 9

7X = 45

<h2>X = 45/7</h2>

horrorfan [7]2 years ago
3 0

Answer:

7/45

Step-by-step explanation:

Because the x because its the constant which stay the same and it signify the numerator and once you times the x to 7 its is equals 7. The denominator is 9 which will be 5 times equal 45. That why it equals 7/45.

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A random sample of 77 fields of corn has a mean yield of 26.226.2 bushels per acre and standard deviation of 2.322.32 bushels pe
PSYCHO15rus [73]

Answer:

Therefore the  95% confidence interval is (25,707.480 < E < 26,744.920)

Step-by-step explanation:

n = 77

mean u = 26,226.2  bushels per acre

standard deviation s = 2,322.32

let E = true mean

let A = test statistic

Find 95% Confidence Interval

so

let  A =  (u - E) *  (\sqrt{n}  / s)   be the test statistic

we want      P( average_l <  A  < average_u )  = 95%

look for  lower 2.5%  and the upper 97.5%  Because I think this is a 2-tail test

average_l =  -1.96  which corresponds to the 2.5%

average_u = 1.96

P(  -1.96  <  A  <  1.96)  =  95%

P(  -1.96  <  (u - E) *  (\sqrt{n}  / s)  <  1.96)  =  95%

Solve for the true mean E ok

E   <   u + 1.96* (s  / \sqrt{n})

from  -1.96  <  (u - E) *  (\sqrt{n}  / s)

E < 26,226.2 +  1.96*( 2,322.32 / \sqrt{77} )

E < 26,226.2 +  1.96*( 2,322.32 / \sqrt{77} )

E < 26,226.2 +  518.7197348105429466

upper bound is 26,744.9197

or

u - 1.96* (s  / \sqrt{n})  < E

26,226.2 -  518.7197348105429466  < E

25,707.48026519  < E

lower bound is 25,707.48026519

Therefore the  95% confidence interval is (25,707.480 < E < 26,744.920)

7 0
3 years ago
Solve the math problem
k0ka [10]

If this is an option, it should be Similar Triangles.

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2 years ago
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Answer:

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8 0
3 years ago
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a group of 13 ladies had lunch at a socal restaurant . the total bell for their lunch was 123.50. the ladies agreed that each on
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Answer:

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