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3 years ago

Identify two numbers that have a sum of 6 and a product of -40.

Mathematics

1 answer:

nika2105 [10]3 years ago

4 0

Answer:

45 69 is the answer you are looking for

Step-by-step explanation:

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Need help on a systems of equations word problem

lapo4ka [179]

Answer:

brazil: 12.8 portugal: 14.769230769230769 (you need to round it)

Step-by-step explanation:

just divide.

8 0

2 years ago

The length of a parking lot is 5 yards more than the width. If the area of the parking lot is 104 square yards, find the dimensi

Artist 52 [7]

Area= L x W and if the L is 5 yds more than the width is the equation with be...
Area(104)=Wx(W+5)
so 104=W^2+5w
w^2+5W-104 using the quadratic formula you end up getting
W=8
L=8+5=13
13*8=104

6 0

3 years ago

Answer true or false to each statement concerning a confidence interval for a population mean. Give reasons for your answers. a.

Rainbow [258]

Answer:

(a) True

(b) True

(d) True

Step-by-step explanation:

The general form of a confidence interval is:

$CI=SS\pm MOE$

Here,

SS = Sample statistic

MOE = margin of error

The formula to compute the MOE is:

$MOE=\frac{length}{2}$

Here, length implies the length of the confidence interval.

(a)

The statement is:

"The length of a confidence interval can be determined if you know only the margin of error."

The length of the confidence interval is twice the MOE.

So, yes one can compute the length of the confidence interval if they know the value if MOE.

The statement is True.

(b)

The statement is:

"The margin of error can be determined if you know only the length of the confidence interval."

The margin of error of the confidence interval is half the length.

So, yes one can compute the MOE if they know the length of the confidence interval.

The statement is True.

(c)

The statement is:

"The confidence interval can be obtained if you know only the margin of error."

The confidence interval formula is:

$CI=SS\pm MOE$

So, if we only knew the value of MOE we cannot compute the confidence interval. We will also need the value of the sample statistic.

The statement is False.

(d)

The statement is:

"The confidence interval can be obtained if you know only the margin of error and the sample mean"

The confidence interval formula is:

$CI=SS\pm MOE$

So, if we knew the value of MOE and the sample statistic we can compute the confidence interval.

The statement is True.

5 0

3 years ago

Please help me with this!

eimsori [14]

The line must be 5000 meters long, to have an area of one square meter

The question is an illustration of area

The area of a shape is the amount of space occupied by the shape.

From the question, we have the following parameters

$Area =1m^2$

$Width = 0.2mm$

Convert the unit from mm to m

$Width = 0.2 \times 0.001 m$

$Width = 0.0002 m$

The area is then calculated as:

$Area =Length \times width$

This gives

$1=Length \times 0.0002$

Divide both sides by 0.0002

$Length = 5000$

Hence, the line must be 5000 meters long