It is irrational, as it's not a number that can be divided into a whole number by another whole number.
Answer: x = 32 y = 20
Step-by-step explanation:
114 = 3x + 18 114 = 3(y + 18)
-18 - 18 /3 /3
= =
96 = 3x 38 = y + 18
/3 /3 -18 -18
= =
32 = x 20 = y
Answer: x = -7
Step-by-step explanation:
7 (x + 4) = -21
7x + 28 = -21
Subtract 28 from both sides
7x = -49
Divide both sides by 7
x = -7
Answer:
(x + 5)(3x - 2)
Step-by-step explanation:
Assuming you require the expression factorised.
3x² + 13x - 10
Consider the factors of the product of the x² term and the constant term which sum to give the coefficient of the x- term.
product = 3 × - 10 = - 30 and sum = + 13
The factors are + 15 and - 2
Use these factors to split the x- term
3x² + 15x - 2x - 10 ( factor the first/second and third/fourth terms )
= 3x(x + 5) - 2(x + 5) ← factor out (x + 5) from each term
= (x + 5)(3x - 2) ← in factored form
