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BARSIC [14]
3 years ago
13

A compact disc is designed to last an average of 4 years with a standard deviation of 0.8 years.

Mathematics
1 answer:
Mashutka [201]3 years ago
7 0
3-4/.8=1.25
then use the probability z chart,

10.56%

!!!
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5. The perimeter of a room is measured and found
Aleksandr [31]

Answer: C

Step-by-step explanation:

12in is 1 ft

652/12 is 54r4

so atlease 55

4 0
1 year ago
What is the x-component of the electric field at (x, y) = (0 m, 4 m)??
Elza [17]
(a)Two charges are placed on the x-axis: one is placed at x = 3 m and the other is at x = -3 m. The magnitude of both charges is 2.3 µC but the blue one (at x = -3 m) is positive while the red one (at x = +3 m) is negative.

What are the x- and y-components of the electric field at (x, y) = (0 m, +4 m)?

(b) Now the positive and negative charge switch places. The magnitude of the charges is still 2.3 µC where the blue one (now at x = +3 m) is positive and the red one (now at x = -3 m) is negative.

What are the x- and y-components of the electric field at (x, y) = (0 m, +4 m)?

(c) Now both charges (still at x = -3 m and x = +3 m) are positive. The magnitude of both charges is still 2.3 µC.

What are the x- and y-components of the electric field at (x, y) = (0 m, +4 m)?

(d) Finally, both charges (still at x = -3 m and x = +3 m) are negative. The magnitude of both charges is still 2.3 µC.
8 0
3 years ago
What is 2*8[(9+0)6*9]?
Elden [556K]

Answer:

The answer is 7776!  

Step-by-step explanation:

Use PEMDAS

PEMDAS:

Parentheses

Exponents,

Multiplication

Division (from left to right),

Addition and

Subtraction (from left to right).

7 0
3 years ago
Read 2 more answers
Jonas has 1728 copies of a 1 × 1 × 1 cube with the net
bonufazy [111]

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7 0
3 years ago
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What is 04.151515... into a fraction
Sergio039 [100]

Answer:

\displaystyle 4.\overline{15} = \frac{137}{33}.

Step-by-step explanation:

Start by separating this decimal number into its integer part and its fraction part:

4.151515\cdots = 4 + 0.151515\cdots

The most challenging task here is to express 0.151515\cdots as a proper fraction. Once that fraction is found, expressing the original number 4.151515\cdots will be as simple as rewriting a mixed number as an improper fraction.

Let x = 0.151515\cdots. (x + 4) would then represent the original number.

Note that the repeating digits appear in groups of two. Therefore, if the digits in x are shifted to the left by two places, the repeating part will continue to match:

\begin{aligned}x = 0.&151515\cdots && \\ 100\, x = 15.& 151515\cdots \end{aligned}.

Note, that this "shifting" is as simple as multiplying the initial number by 100 (same as 10 raised to the power of the number of digits that needs to be shifted.)

Subtract the original number from the shifted number to eliminate the fraction part completely:

\begin{aligned}&(100\, x) - x \\ &= 15.151515\cdots\\  & \phantom{=}- 0.151515\cdots\\&=15 \end{aligned}.

In other words:

99\, x = 15.

\displaystyle x = \frac{15}{99} = \frac{5}{33}.

Therefore, the original number would be:

\displaystyle x + 4 = \frac{5}{33} = \frac{132 + 5}{33} = \frac{137}{33}.

4 0
3 years ago
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