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madam [21]
3 years ago
9

What is the decibel level of the noise from a fire alarm with intensity 10^-1 watts per square inch

Mathematics
1 answer:
prisoha [69]3 years ago
6 0

Answer:

110 db

Step-by-step explanation:

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Nicole got a prepaid debit card with $25 on it. For her first purchase with the card, she bought some bulk ribbon at a craft sto
vagabundo [1.1K]

Answer:

34 yards of ribbon

Step-by-step explanation:

If you will subtract the $17.52 to $25 you will get 7.48 then 7.48 divide to .22 you will get 34 as the answer

3 0
3 years ago
What is a pair of vertical angles?
hram777 [196]
Definition: Vertical Angles
Vertical angles are a pair of non-adjacent angles formed when two lines intersect.
7 0
3 years ago
An electrician can wire a house in 20 hours. if she works with an apprentice, the same job can be completed in 12 hours. how lon
AlekseyPX
We know that
<span>An electrician can wire a house in ------------> 20 hours
so
100%----------------> 20 hours
 X-------------------> 12 hour
x=12*100/20----> x=60%

that means 
</span><span>the apprentice in 12 hours complete the (100-60)----> 40%

</span>the apprentice in 12 hours complete -------> 40%
x hours------------------------------------> 100%
x=100*12/40-----> x=30 hours

the answer is
30 hours


4 0
4 years ago
1 Hector puts a fence around his rectangular
prisoha [69]

Answer:

48 feet of fence

Step-by-step explanation:

A rectangle has 4 sides, the parallel sides are equal to each other in length.

If Hector used 14 feet of fence on the long side, he used 28 feet in total for both long sides.

If Hector used 10 feet for the width/short side, he used 20 feet in total for both short sides.

Put simply: (14 x 2) + (10 x 2) = 48 feet of fence in total

4 0
3 years ago
Two experiments are defined below. An event is defined for each of the experiments. Experiment I: Corrine rolls a standard six-s
-BARSIC- [3]

Answer: The correct answer is option C: Both events are equally likely to occur

Step-by-step explanation: For the first experiment, Corrine has a six-sided die, which means there is a total of six possible outcomes altogether. In her experiment, Corrine rolls a number greater than three. The number of events that satisfies this condition in her experiment are the numbers four, five and six (that is, 3 events). Hence the probability can be calculated as follows;

P(>3) = Number of required outcomes/Number of possible outcomes

P(>3) = 3/6

P(>3) = 1/2 or 0.5

Therefore the probability of rolling a number greater than three is 0.5 or 50%.

For the second experiment, Pablo notes heads on the first flip of a coin and then tails on the second flip. for a coin there are two outcomes in total, so the probability of the coin landing on a head is equal to the probability of the coin landing on a tail. Hence the probability can be calculated as follows;

P(Head) = Number of required outcomes/Number of all possible outcomes

P(Head) = 1/2

P(Head) = 0.5

Therefore the probability of landing on a head is 0.5 or 50%. (Note that the probability of landing on  a tail is equally 0.5 or 50%)

From these results we can conclude that in both experiments , both events are equally likely to occur.

3 0
3 years ago
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