The definition of a rational number is:
Any number that can be made by building a fraction
using whole numbers.
You can make 0.123 that way. Here's the fraction: 123/1000
It's also handy to know that any number that's completely
written down using digits ... and a fraction bar or a decimal
point if they're needed ... is a rational number. This is not a
definition, and it doesn't cover all rational numbers, but it's
handy sometimes.
It's also handy to know that a decimal that has a set of digits
after the decimal point that repeats forever is a rational number,
even though you can't completely write it down (because it never
ends).
The sine rule will help you here.
On a unit circle, sin(Θ) would be the y-coordinate of point P (ie., 20). But we're not on the unit circle, so we'll have to divide 20 by the length of P (from the origin). The length of P = √(15²+20²) = 25.
So sin(Θ) = 20/25 = 0.8
Answer:
13
Step-by-step explanation:
Substitute x for 28 and y for 5:
(28) - 3(5)
28 - 15
13
Estimated bill amount is $57
Step-by-step explanation:
Round off the cost of 1 appetizer.
Cost of 1 appetizer = $6.50 ≈ $7
Find the cost of 2 main courses.
Cost of 1 main course = $15.75 ≈ $16
∴ Cost of 2 main courses = 2 × 16 = $32
Find cost of 2 drinks.
Cost of 1 drink = $2.25 ≈ $2
∴ Cost of 2 drinks = 2 × 2 = $4
Find the cost of 2 desserts.
Cost of 1 dessert = $7.25 ≈ $7
∴ Cost of 2 desserts = 7 × 2 = $14
Add all and find the total cost.
Estimated Total bill amount = 7 + 32 + 4 + 14 = $57
The <em>maximum</em> lengths of the sides of the rectangular base are approximately 7.616 inches and 22.847 inches.
<h3>How to find the maximum lengths of the sides of the base</h3>
The surface area of the <em>rectangular</em> prism (
) is equal to the product of two lengths of triangle. The <em>area</em> formula for the base is:
If we know that 
, then the least length of the base of the rectangle is:
The <em>maximum</em> lengths of the sides of the rectangular base are approximately 7.616 inches and 22.847 inches. 
To learn more on prisms, we kindly invite to check this verified question: brainly.com/question/318504
