Answer:
A. <em>a</em> and <em>β</em>
Step-by-step explanation:
I calculated it logically
Answer:
5/18
Step-by-step explanation:
note: 5/9 is the same as 10/18 (we get this by multiplying both numerator and denominator by 2)
hence
5/9-5/18
= 10/18 - 5/18
= (10-5) / 18
= 5/18
Answer:
The solution of y² - 1 = 15 is +4 and -4
Step-by-step explanation:
Given
y² - 1 = 15
Our solution goes thus;
Make y² the subject of formula
y² = 15 + 1
Add 15 to 1
y² = 16
Take square roots of both sides
√y² = √16
y = √16
Note that the square root of 16 is either +4 or -4 because +4 * +4 = 16 and -4 * -4 = 16; So, we replace √16 with ±4 which means + or -4
y = ±4
y = +4 and -4
Hence, the solution of y² - 1 = 15 is +4 and -4
Answer: 
Step-by-step explanation:
Since, the cost of bus fair = x dollars,
Also, a baseball cap which is $18.99 is needed to buy with the given money,
Hence, total expenditure = x + 18.99
While the given money for spending = 24 dollars,
That is, the expenditure can not be exceeded to $ 24.
Thus, the required inequality,

A) ratio of the perimeters is the same as ratio of corresponding sides, so:
b) ratio of the areas is equal to k² so: