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4 years ago

Evaluate the expression below when x = 5. 3x(2x - 7)

Mathematics

2 answers:

geniusboy [140]4 years ago

7 0

3x(2x-7)
3(5)(2(5)-7)
15(10-7)
15(3)
45

sukhopar [10]4 years ago

7 0

3x(2x-7)
3(5) (2(5)-7)
15(10-7)
15(3)
<span>45</span>

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drek231 [11]

The number of tests that it would take for the probability of committing at least one type I error to be at least 0.7 is 118 .

In the question ,

it is given that ,

the probability of committing at least , type I error is = 0.7

we have to find the number of tests ,

let the number of test be n ,

the above mentioned situation can be written as

1 - P(no type I error is committed) ≥ P(at least type I error is committed)

which is written as ,

1 - (1 - 0.01)ⁿ ≥ 0.7

-(0.99)ⁿ ≥ 0.7 - 1

(0.99)ⁿ ≤ 0.3

On further simplification ,

we get ,

n ≈ 118 .

Therefore , the number of tests are 118 .

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1 year ago

The shortest board available at the lumber yard is 3 feet long. How many 4 inch lengths can a carpenter get from the available b

MrRissso [65]

Answer:

Total of 9 lengths of 4 inches can be taken out from a board of 3 feet

Step-by-step explanation:

length of board in feet = 3 ft

1 ft = 12 inches

Length of board in inch = $3\times 12$

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Let no of 4 inches length be = x

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3 years ago

The equation for line g can be written as y=2/9x+10.line h which is Pharrell to line g,includes the point (-3,-1) what is the e

Dennis_Churaev [7]

Answer:

The equation of line h is $y = \frac{2x}{9} + \frac{5}{3}$

Step-by-step explanation:

Equation of a line:

The equation of a line has the following format:

$y = mx + b$

In which m is the slope and b is the y-intercept.

Parallel lines:

Parallel lines have the same slope.

Line g:

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Line h:

Parallel to line g, which means that the slope is given by $m = \frac{2}{9}$

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$b = 1 + \frac{2}{3}$

$b = \frac{5}{3}$

So, the equation of line h is:

$y = \frac{2x}{9} + \frac{5}{3}$

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