Answer: 198cm
Step-by-step explanation:
We are given the dimensions of a rectangular prism;
3cm 9cm and 6cm
We are required to determine its surface area;
We need to know that;
Surface area of a rectangular prism is given by;
A = 2(WL+HL+WH)
Where L, W and H are length , width and height respectively;
Assuming;
Width is 3 cm
Length is 9 cm, and
Height is 6 cm
Then;
Area = 2 ( (3×9) + (6×9) + (3×6))
= 2(99)
= 198 cm²
Therefore, the area of the rectangular prism is 198 cm²
Answer:
81 times 9
Step-by-step explanation:
9 to the power of two is 81
so nine to the power of three is 81 times 9
I am 100% sure
Increase = Going up.
Therefore Graph D is increasing. simply logic
Answer:
Sue must score 94 on the final test to earn a B.
Step-by-step explanation:
There are five tests in total.
Sue's average on the first four tests is 84.
If after the final test, she scores X, she will have a B on average of five tests.
We have the following equation:
86 = (4 × 84 + X)/5
<=> X = 5 × 86 - 4 × 84
=> X = 94
Answer:
No solution.
Step-by-step explanation:
So we have the system of equations:
![x=5-2y\\4y=15-2x](https://tex.z-dn.net/?f=x%3D5-2y%5C%5C4y%3D15-2x)
We can solve this by substitution. Substitute the first equation into the second. Thus:
![4y=15-2(5-2y)](https://tex.z-dn.net/?f=4y%3D15-2%285-2y%29)
Distribute the right:
![4y=15-10+4y](https://tex.z-dn.net/?f=4y%3D15-10%2B4y)
Subtract 4y from both sides:
![0=15-10](https://tex.z-dn.net/?f=0%3D15-10)
Subtract the right:
![0=5](https://tex.z-dn.net/?f=0%3D5)
As you can see, this statement is not true. In other words, the system of equations have no solution (likely because the lines are parallel).
And we're done!