A.) -11
b.) 31
c.) -208
d.) 12
e.) -47
f.) -28
I hope this helped (I used bedmas)
Answer: 735π.
Explanation:
The area of a circle is given by: A= πr^2. The radius of the circle here is 7.
So the area of the circle is:
π7^2=49π
You then multiply 49π by 15 to get the volume:
49π*15=735π
<h3>
Answer: -76 (choice C)</h3>
Explanation:
We're applying the dot product.
u dot v = 3*(-4) + (-8)*8
u dot v = -12 - 64
u dot v = -76
The idea is that we multiply the x coordinates together, and the y coordinates together separately. Afterward you add the products. The result of any dot product is a scalar value, aka a single number.
The dot product is useful in many applications. One of which is to determine if two vectors are orthogonal.
Answer:
16/21
Step-by-step explanation: 4 x 3 = 12, 3 x 7 = 21, 13/3 - 25/7 raise to the first common denominator, 91/21 - 75/21 = 16/21
≈10,4