A scientist measured the wavelength of an X-ray as 0.0000000065 meters. Write the number in scientific notation.
1 answer:
Answer:
Step-by-step explanation:
The scientific notation of a number is to express the number in the form where x is the base of ten.
So, if we want to express the number 0.0000000065, then we can write it as
.
So, we can write 0.0000000065 as or
but those are not the scientific notation.
Therefore, is the scientific notation of 0.0000000065. (Answer)
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To answer this question, we will use the sine law which is illustrated in the attached image.
We are given that:
The distance from school to library = a
∠A = 32
∠B = 110
b = 2.2
Substitute with the givens in the relation of the sine law to get a as follows:
(sin 32) / (a) = (sin 110) / (2.2)
a = (2.2 sin 32) / (sin 110)
distance from school to library = a = 1.2406 mi
Based on the above calculations, the best choice would be:
B. 1.2 mi
We are given that:
The distance from school to library = a
∠A = 32
∠B = 110
b = 2.2
Substitute with the givens in the relation of the sine law to get a as follows:
(sin 32) / (a) = (sin 110) / (2.2)
a = (2.2 sin 32) / (sin 110)
distance from school to library = a = 1.2406 mi
Based on the above calculations, the best choice would be:
B. 1.2 mi
Answer:
$
Step-by-step explanation:
<em>To find out what she paid with the discount and no tax, turn the percentage into a decimal. To do that, divide it by 100.</em>
Then, multiply that by the total.
<em>Subtract that by the total.</em>
<em>Now, we need to find the sales tax. Again, we know to divide the percentage by 100 to get the decimal. In that case, 6.5% is now .065.</em>
Multiply that by the discounted price.
<em>Add that to the price.</em>
$ would be the total price.
<em>:)</em>