3/7 is the correct answer.
explanation:
Dividing is equivalent to multiplying with the reciprocal.
9/7 x 1/3
Reduce the numbers with greatest common factor: 3
3/7 x 1 = 3/7
They are to make variables.
Answer:
y= -1/2x + 3
Step-by-step explanation:
A line perpendicular will have the reciprocal slope.
First you need to find the slope of the line given.
m= rise/ run
m= -2
Now flip for the reciprocal.
The perpendicular line will have a slope of -1/2
Answer:
872.74 sq. units.
Step-by-step explanation:
If the sides of the base and top triangles are 11 units, 15 units, and 16 units, then half of the perimeter will be =
.
Therefore, the area of the top or bottom triangle will be
= ![\sqrt{21 \times (21 - 11)\times (21 - 15) \times (21 - 16)}](https://tex.z-dn.net/?f=%5Csqrt%7B21%20%5Ctimes%20%2821%20-%2011%29%5Ctimes%20%2821%20-%2015%29%20%5Ctimes%20%2821%20-%2016%29%7D)
= 79.37 sq. units.
Now, perimeter of the triangle is (11 + 15 + 16) = 42 units.
Therefore, the total surface area of the triangular prism will be
= 79.37 × 2 + 42 × 17
= 872.74 sq. units. (Answer)
Answer:
Only one student, Melinda used it right.
Step-by-step explanation:
Associative property lets us place our brackets the way we want and the result would be unchanged.
Here: (13 + 15 + 20) + (20 + 47 + 18).
So, we can place the brackets in any form, like (13 + 15) + (20 + 20) + (47 + 18).
There are many ways to do it. Melinda's was is yet another example.
Note that Associative property does not hold for subtraction.