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2 years ago

Which two of the following are not characteristics of surveys?

Mathematics

1 answer:

OLEGan [10]2 years ago

4 0

Answer: A. The study compares two or more treatments (possibly including "no treatment").

C. The study involves one or more treatment groups and a control group.

Step-by-step explanation:

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2.5y=5 what is the answer to the equation?

postnew [5]

Answer:2

Step-by-step explanation:

2.5(2)

7 0

2 years ago

Read 2 more answers

What is the maximum volume in cubic inches of an open box to be made from a 12-inch by 16-inch piece of cardboard by cutting out

Romashka-Z-Leto [24]

If you start with a 12x16 rectangle and cut square with side length x, when you bend the sides you'll have an inner rectangle with sides $12-2x$ and $16-2x$ , and a height of x.

So, the volume will be given by the product of the dimensions, i.e.

$(12-2x)(16-2x)x = 4x^3-56x^2+192x$

The derivative of this function is

$12x^2-112x+192$

and it equals zero if and only if

$12x^2-112x+192=0 \iff x = \dfrac{14\pm 2\sqrt{13}}{3}$

If we evaluate the volume function at these points, we have

$f\left(\dfrac{14-2\sqrt{13}}{3}\right) = \dfrac{64}{27}(35+13\sqrt{13})> f\left(\dfrac{14-2\sqrt{13}}{3}\right) = -\dfrac{64}{27}(13\sqrt{13}-35)$

So, the maximum volume is given if you cut a square with side length

$x=\dfrac{14-2\sqrt{13}}{3}\approx 2.7$

5 0

2 years ago

Given f-1(x)=-34x+2, which equation represents f(x)?

Elina [12.6K]

There is the answer

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1 year ago

If a= .75 and b= .50, what is the perimeter of the rectangle?

Lerok [7]

Answer:

C. 14 inches

Step-by-step explanation:

The perimeter is double the sum of length and width:

P = 2((4a +3) +(6b -2) = 8a +12b +2

For the given values, this is ...

P = 8(0.75) +12(0.50) +2 = 6 + 6 + 2 = 14

The perimeter is 14 inches.

3 0

2 years ago

Is 4 3/5 - 3 3/4 greater than or less than 1

Jlenok [28]

Answer:

less because it equals 0.85

Step-by-step explanation:

3 0

1 year ago