Answer:55
Step-by-step explanation:
55
Answer:
Please find the attachment.
Step-by-step explanation:
We are asked to explain why 
gives the area of a triangle with sides a and b and included angle theta.
We know that area of a triangle is equal to half the product of base and height of the triangle.
Upon looking at our given triangle, we can see that the base of the triangle is equal to 'a'.
The height of the triangle can be determined using sin(theta) as sine relates opposite side of right triangle with its hypotenuse.
Upon substituting our given values in area formula, we will get:
Hence, proved.
-3x = 21
Divide -3 from both sides and you get x = -7
1/3x = 6
Divide 1/3 from both sides and you get x = 18
-1/2x = -7
Divide -1/2 from both sides and you get x = 14 (you get a positive answer from 2 negatives)
Dividing 1/3 is just multiplying by 3, and dividing -1/2 is just multiplying by -2
The term "cranium" describes your skull.
Answer: 15in^2
Step-by-step explanation:
first you need to find the area of the rectangle, so you would multiply 7 and 3, which gives you 21, (A=L•W). So now you need to find the area of the triangles, the formula for that is A= 1/2 b•h, so you get 3in for the area of the triangle, but since there are two and they are the exact same triangle you would just combine them, so the area for both triangles is 6in, so then you would need to subtract the 6 from the 21 so that you can find the area of the shape, and your final answer would be 15in(squared). hopefully you understand
