Answer:
a = 10
b = 4
Step-by-step explanation:
a) AB = 4 + x
b)
(x + 6)(x + 4) = 28
x^2 + 10x + 24 = 28
x^2 + 10x = 4
ax = 10x
a = 10
b = 4
Answer:
D
Step-by-step explanation:
Mean tells us the average (in this case, total marks/ total number of students).
Standard deviation tells us the spread of a set of data from its mean (how much it deviates from the mean).
Thus, standard deviation can be used to determine the consistency of a data. <u>The smaller the standard deviation, the more consistent the data is</u>.
Since 4S has the smallest standard deviation of 1, it shows the most consistent achievement in the test.
Answer:
15
Step-by-step explanation:
3*3+2*3=15
Step-by-step explanation:
It is 28°
Because both triangles FED and ABC are right (converse of pythagorean theorem)
Also the lengths of the side of the triangle ABC is double the lengths of the side of the other triangle
You calculate the measure of the angle ∠A in triangle ABC which is 28° (by calculation)
This will also be the measure of angle D
I'm not sure if it is right but hopefully it will help you.
Answer:170
Step-by-step explanation:
Place the numbers in ascending order that should give you
120,160,170,180,180
Then find the number that is in the middle that would be 170, there for your answer is 170