3 years ago

Which ordered pairs make the open sentence true?

Mathematics

1 answer:

Hitman42 [59]3 years ago

8 0

Answer:

-2,1

Step-by-step explanation:

hope it will be helpful for i

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Which choice is equivalent to the expression below? √-49 btw its 7i

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Answer:

Step-by-step explanation:

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On Monday morning,there were 30 tickets available for a concert if 1/3 of the tickets were sold on Monday and 1/5 of those left

lianna [129]

I think the answer would be 16, Hope this helps

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3 years ago

How do you convert 1/40 to a decimal form

dezoksy [38]

The answer will be 0.4 .

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It is thought that not as many Americans buy presents to celebrate Valentine's Day anymore. A random sample of 40 Americans yiel

evablogger [386]

Answer:

98% confidence interval of the true proportion of all Americans who celebrate Valentine's Day

(0.3672 , 0.7328)

Step-by-step explanation:

Explanation:-

Given Random sample size n =40

Sample proportion

$p = \frac{x}{n} = \frac{22}{40} = 0.55$

98% confidence interval of the true proportion of all Americans who celebrate Valentine's Day

$(p-Z_{\alpha } \sqrt{\frac{pq}{n} } , p + Z_{\alpha } \sqrt{\frac{pq}{n} } )$

The Z-value Z₀.₉₈ = Z₀.₀₂ = 2.326

98% confidence interval of the true proportion of all Americans who celebrate Valentine's Day

$(0.55-2.326\sqrt{\frac{0.55 X0.45}{40} } , 0.55 + 2.326\sqrt{\frac{0.55 X0.45}{40} } )$

( 0.55 - 0.1828 , 0.55 + 0.1828)

(0.3672 , 0.7328)

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3 years ago

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A straight line has equation y=5-3x what is the gradient of the line?

BARSIC [14]

Answer:

-3

Step-by-step explanation:

1. rearrange so it's in the formula y=mx+C

2. y=-3x+5

y=mx+C

M=gradient

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3 years ago