Answer:
The mean score of the entire team is 26.909.
Step-by-step explanation:
Given that four batsmen had a mean of 42.5.
Let 
, where 
denote the batsmen.
From the first statement, we have:
Therefore, the sum of the scores of the first four batsmen is 170.
Now, from the second statement we have:
That is, the sum of the scores of the remaining 7 batsmen is 126.
Now, to calculate the average(mean) of the entire team, we add the individual scores and divide it by 11.
which is the required answer.
The area of a rectangular shape is given by
Given:
It is given that a gallon of paint covers 400 square feet, and wall is 269 feet long and 4 feet high .
Now the area of wall will be
Since,
So, the ewall requires approx 3 gallon of paint.
Okay, you will need to use the law of cosines for this problem.
The Law of Cosines states (in this case): a^2 = b^2 + c^2 - 2 * b * c * cos A, where "a" is the side opposite angle A (7 inches), and b and c are the other two sides.
Plug the numbers in and you get: 7^2 = 5^2 + 9^2 - 2 * 5 * 9 * cos A, or:
49 = 25 + 81 - 90 * cos A.
Subtract (25 + 81) from both sides to get:
-57 = -90 * cos A.
Divide by -90 on both sides:
cos A = 19/30
To find A, you do the inverse trigonometric function to get:
cos^-1 of (19/30) = A.
I don't have a calculator that can do this right now, but if you plug the left side of the above equation into it (make sure it is in degrees, not radians), you should get A.
Answer:
When two triangles are similar, the reduced ratio of any two corresponding sides is called the scale factor of the similar triangles. In Figure 1 , Δ ABC∼ Δ DEF. Figure 1 Similar triangles whose scale factor is 2 : 1. The ratios of corresponding sides are 6/3, 8/4, 10/5. hope that helps love!
