Answer:
B: 340
Step-by-step explanation:
We are told that her walls are 8 ft high.
Now, Two walls are 10 feet wide. Thus, area of the first two walls will be;
A1 = 2 × (10 × 8) = 160 sq.ft
Also, the other 2 walls are 15 feet wide.
Thus, Area of other two walls will be;
A2 = 2 × (15 × 8) = 240 sq.ft
We are told that the combined area of the 1 window and the 1 door in her room in 60 square feet.
This means that we will subtract 60 Sq.ft from the sum of the area of the 2 walls earlier calculated to get the total area to be painted.
Thus;
Area to be painted = 160 + 240 - 60 = 340 Sq.ft
Answer:
Its A
Step-by-step explanation:
The answer is A, because the dot means it cant be 11, which is what the question is asking. Hope this helps!
Answer:
12870ways
Step-by-step explanation:
Combination has to do with selection
Total members in a tennis club = 15
number of men = 8
number of women = 7
Number of team consisting of women will be expressed as 15C7
15C7 = 15!/(15-7)!7!
15C7 = 15!/8!7!
15C7 = 15*14*13*12*11*10*9*8!/8!7!
15C7 = 15*14*13*12*11*10*9/7 * 6 * 5 * 4 * 3 * 2
15C7 = 15*14*13*12*11/56
15C7 = 6,435 ways
Number of team consisting of men will be expressed as 15C8
15C8 = 15!/8!7!
15C8 = 15*14*13*12*11*10*9*8!/8!7!
15C8 = 15*14*13*12*11*10*9/7 * 6 * 5 * 4 * 3 * 2
15C8 = 6,435 ways
Adding both
Total ways = 6,435 ways + 6,435 ways
Total ways = 12870ways
Hence the required number of ways is 12870ways
Let the amount of the first brand be x, and let the amount of the second brand be y.
0.09x + 0.14y = 240 * 0.13 .................(1)
x + y = 240 ..............(2)
y = 240 - x .......................(3)
Plugging the value for y from equation (3) into equation (1), we get:

...............(4)
Equation (4) simplifies to:
-0.05x = -2.4
giving the value for the required amount of 9% vinegar as 48 ml and the required amount of 14% vinegar as 240 - 48 = 192 ml.