Answer:
A
Step-by-step explanation:
The mean/average is the sum of all the numbers divided by the number of numbers.
It is given that mean is 4.5 points. <em>At this point, it means that there might be students scoring less than 4.5 and students scoring greater than 4.5 BUT the average comes to be 4.5</em>.
BUT SINCE IT IS GIVEN THAT EACH STUDENT SCORED THE SAME, the only way that this can be true is when EVERY STUDENT SCORES 4.5. This way, the AVERAGE/MEAN will be 4.5
Hence, the correct answer is A.
#1 - a) 11.4018
#2 - d) 7.62
#3 - a) 10.7238
#4 - b) 6.57
Explanation
#1 - The initial guess is 11.4022. We first divide 130 by this guess:
130÷11.4022 = 11.40130852
We now average this number with the initial guess:
(11.40130852 + 11.4022)/2 ≈ 11.4018
#2 - The initial guess is 7.8. We divide 58 by this guess:
58÷7.8 = 7.435897436
We now average this number with the initial guess:
(7.435897436 + 7.8)/2 = 7.617948718 ≈ 7.62
#3 - The initial guess is 10.7262. We divide 115 by this guess:
115÷10.7262 = 10.72141112
We now average this number with the initial guess:
(10.72141112 + 10.7262)/2 = 10.72380556 ≈ 10.7238
#4 - The initial guess is 6.9. We divide 43 by this guess:
43÷6.9 = 6.231884058
We now average this number with the initial guess:
(6.231884058+6.9)/2 = 6.565942029 ≈ 6.57
Theorem : If two similar triangles have a scale factor of a : b, then the ratio of their areas is a^2 : b^2<span>.
We have a</span>: b = 1: 1; then a^2 : b^2 = 1^2 : 1^2 = 1;
A=0
With step by step you can find the awnser out
Answer:
a) 9a(x - 3b) - 4(x - 3b) = (9a - 4)(x - 3b)
b) 5a(2b - 3) - 4(2b - 3) = (5a - 4)(2b - 3)
c) x(2h - k) + 3y(k - 2h)
= x(2h - k) - 3y(2h - k)
= (x - 3y)(2h - k)
Step-by-step explanation:
