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Radda [10]
2 years ago
5

Scientists want to estimate the mean weight gain of mice after they have been fed a special diet. From previous studies, it is k

nown that the weight gain is normally distributed with standard deviation 2 grams. How many mice must be weighed so that a 99% confidence interval for population mean weight will have a margin of error of 0.4 grams
Mathematics
1 answer:
USPshnik [31]2 years ago
8 0

Answer:

One example is the equation:

2x + 6 = 4x/2 + 12/2

To solve this, we need to transpose like terms to the same side.

2x - 4x/2 = 12/2 - 6

2x - 2x = 6 - 6

0 = 0

Since both sides are zero, it means that the equation has infinite number of solutions.

Step-by-step explanation:

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kirill115 [55]
Your answer is simple times 6 to 3 to get 18 then 15 by 8 to get 96 then add up everything to get 114
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3 years ago
Graph the inverse circular function by hand, given f(x) = 3sin(2x) ;-pi/4 ≤ ≤pi/4
nasty-shy [4]

Part a)

a) The given function is

f(x) = 3 \sin(2x)

We let

y =  3 \sin(2x)

Interchange x and y.

x=  3 \sin(2y)

Solve for y;

\frac{x}{3}  =  \sin(2y)

y =  \frac{1}{2}  { \sin}^{ - 1}( \frac{x}{3} )

{f}^{ - 1}(x)  =  \frac{1}{2}  { \sin}^{ - 1}( \frac{x}{3} )

Part b) The range of f(x) refers to y-values for which f(x) exists.

The range of f(x) is

-  3 \leqslant y \leqslant 3

This is because the function is within y=-3 and y=3.

c) The range of

{f}^{ - 1} (x)

is

-  \frac{ \pi}{4}  \leqslant y \leqslant  \frac{\pi}{4}

The domain is -3≤x≤3

This is because the domain and range of a function and its inverse swaps.

Part d) The graph is shown in the attachment.

3 0
3 years ago
A CD store sold 3467 CDs in 7 days about the same number of CDs were sold each day how many CDs did the store sell in one day
Novay_Z [31]
About 495 CDs in a single day

3467/7=495+ small decimal
7 0
2 years ago
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Find the value of angles x, y, and z
AVprozaik [17]

Answer:

x = 91, y = 89, z = 31 Fourth choice

Step-by-step explanation:

x = 180 - 51 - 38 = 91

y = 180 - 91 = 89

z = 180 - 60 - 89 = 31

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2 years ago
Which are vertical angles?
weeeeeb [17]

Answer:

∠A→∠D is and vertical angle of ∠B→∠E

Step-by-step explanation:

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3 years ago
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