Answer:
223.5 in²
Step-by-step explanation:
The surface area of a triangular pyramid comprises:
- Area of the <u>base triangle</u>.
- Area of 3 <u>congruent side triangles</u>.
<u />
<u>Area of a triangle</u>
where:
From inspection of the diagram:
- Base triangle: b = 10 in, h = 8.7 in
- Side triangles: b = 20 in, h = 12 in
Therefore, the surface area of the given triangular pyramid is 223.5 in².
Find the value of x.
SUM OF ANGLES ON STRAIGHT LINE = 180°
Answer:
O B. Positive integers only
Step-by-step explanation:
You have that the temperature of a plate is measured respect to the number of hours that the plate has been left in the sun.
In this case you have that the independent variable is the number of hours and the dependent variable is the temperature.
Due to James would like to know how is changing the temperature of the plate, per hour, the best domain for the function, that is, the best available values for the time on which the temperature of the plate is measured, are the positive integers only.
O B. Positive integers only
In order to find the answer of the given problem above, we need to make the solution below:
Given: 2/3 of an hour = practice each day
2/3 of an hour is equivalent to 40 minutes
And per week, there are 7 days. So we will multiply 40 minutes by 7, and the result is 280 minutes. Since there are 60 minutes in an hour, we divide 280 by 60 and we get 4.67 hours. Therefore, each week, you would get 4.67 hours of practice on playing a musical instrument.