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3 years ago

2m-7greater than or equal to 13-2m

1 answer:

7 0

$2m-7 \geq 13-2m \ \ |+2m\\ \\ 2m+2m-7 \geq 13-2m+2m \\ \\4m-7\geq 13 \ \ |+7 \\ \\4m-7 +7\geq 13+7\\ \\4m\geq 20 \ \ / :4 \\ \\ \frac{4}{4}\cdot m\geq \frac{20 }{4}\\ \\m\geq 5$

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The scale from a playground to a scale drawing of the playground is 4 meters per centimeter.The length of the drawing of the pla

Scilla [17]

Answer:

322.24 meters

Step-by-step explanation:

The scale is 4 meter per centimeter. Multiply 5.3 by 4 to get 21.2 meters. Multiply 5.3 by 4 to get 15.2 meters. Multiply 21.2 by 15.2 to get 322.24

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3 years ago

The management of a relatively new social networking website named BooglePlus is conducting a pilot study comparing use of its o

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Answer:

0.0623 ± ( 2.056 )( 0.0224 ) can be used to compute a 95% confidence interval for the slope of the population regression line of y on x

Step-by-step explanation:

Given the data in the question;

sample size n = 28

slope of the least squares regression line of y on x or sample estimate = 0.0623

standard error = 0.0224

95% confidence interval

level of significance ∝ = 1 - 95% = 1 - 0.95 = 0.05

degree of freedom df = n - 2 = 28 - 2 = 26

∴ the equation will be;

⇒ sample estimate ± ( t-test) ( standard error )

⇒ sample estimate ± ( $t_{\alpha /2, df$ ) ( standard error )

⇒ sample estimate ± ( $t_{0.05 /2, 26$ ) ( standard error )

⇒ sample estimate ± ( $t_{0.025, 26$ ) ( standard error )

{ from t table; ( $t_{0.025, 26$ ) = 2.055529 = 2.056

so we substitute

⇒ 0.0623 ± ( 2.056 )( 0.0224 )

Therefore, 0.0623 ± ( 2.056 )( 0.0224 ) can be used to compute a 95% confidence interval for the slope of the population regression line of y on x

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3 years ago

A four-digit code can use the numbers 1, 2, 3, 4. Any of the numbers can be repeated.

alukav5142 [94]

Answer:

256 codes

Step-by-step explanation:

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3 years ago

HURRY UP I AM DIENG I WILL GIVE BRAINLIESTThe area of the parallelogram below is ____ square meters.

polet [3.4K]

Answer:

42m

Step-by-step explanation:

First we need to find the base, which is 6 and the height which is 7. Then, multiply 6 and 7 to get 42. Then add your units, which are meters. So, 42m is your answer. I hope this helps! :)

7 0

2 years ago

Read 2 more answers

the third term of an arithmetic sequence is 24 and the fifth is 32 if the first term is a1. which is an equation nth term of the

const2013 [10]

An = a1 + (n - 1)(d)
Where a1 is the first term and d is the common difference.
First find d, the common difference.
24, ____, 32
a3 a4 a5
Subtract 32-24 = 8
Subtract a5 - a3 = 2
Divide 8/2 = 4
d = 4
Use d and one of the values they give us to find a1.
a3 = 24
24 = a1 + (3 - 1)(4)
24 = a1 + 2(4)
24 = a1 + 8
Subtract 8 from both sides
16 = a1
an = 16 + (n - 1)(4)
Can also be written
an = 16 + 4n - 4
an = 4n + 12

8 0

3 years ago

Read 2 more answers