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4 years ago

Scientific notation what is 0.0000348 in scientific notation

Mathematics

2 answers:

trasher [3.6K]4 years ago

8 0

3.48 x 10^ -5

move the decimal point back to the first number that isn't zero, if the decimal is moved right 5 spaces, it will be 10^ -5 , if a number has a zero, such as 0.000104, it would be 1.04 x 10^ -4.

Mariulka [41]4 years ago

3 0

Answer:

3.48 x 10^-5.

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Approximately 26% of all pipework failures in chemical plants are caused by operator error. What is the probability that out of

alex41 [277]

Answer:

1.17% probability that out of the next 30 pipework failures, at least 14 are due to operator error.

Step-by-step explanation:

For each pipework failure in chemical plants, there are only two possible outcomes. EIther it is caused by operator error, or it is not. For each failure, the probability of it being caused by operator failure is independent from other failures. So we use the binomial probability distribution to solve this problem.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

Approximately 26% of all pipework failures in chemical plants are caused by operator error.

This means that $p = 0.26$

What is the probability that out of the next 30 pipework failures, at least 14 are due to operator error

This is $P(X \geq 14)$ when $n = 30$

Using a binomial probability calculator, we have that

$P(X \geq 14) = 0.0117$

1.17% probability that out of the next 30 pipework failures, at least 14 are due to operator error.

7 0

3 years ago

The area of a rectangle is 72 cm square. The length of the rectangle is 6 cm longer than the width. What is the width of the rec

tangare [24]

The answer is B: 6 cm. You can use guess-and-check method, and plug the possible different answers into the equation x(x+6)=72, x stands for the width.

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4 years ago

The city is planning to add a fishpond to a neighborhood park the figure below is a scale drawing of the fishpond it's scale is

notsponge [240]

I saw the figure of the fishpond. It composed of a rectangle and a circle. The circle is cut into two and each half is attached to the width of the rectangle making an oblong shaped fishpond.

Length of the rectangle: 2.5 inch
Width of the rectangle and diameter of the circle: 1 inch

1/2 inch equals 15 feet.

2.5 inches = 75 feet
1 inch = 30 feet

Area of a rectangle = 75 ft * 30 ft = 2,250 ft²
Area of a circle = 3.14 * (15ft)² = 3.14 * 225ft² = 706.50 ft²

Total Area = 2,250 ft² + 706.50 ft² = 2,956.50 ft²

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4 years ago

Can anybody help? Thanks

algol [13]

Answer:

Step-by-step explanation:

i think its b

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3 years ago

Please help on number 15

malfutka [58]

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3 years ago