Answer:
3 and 12
Step-by-step explanation:
let the 2 numbers be x and y then
x + y = 15 → (1)
xy = 36 → (2)
From (1) : y = 15 - x → (3)
substitute y = 15 - x into (2)
x(15 - x) = 36
15x - x² = 36 ( subtract 36 from both sides )
15x - x² - 36 = 0 ( multiply through by - 1 and arrange in standard form )
x² - 15x + 36 = 0 ← in standard form
(x - 3)(x - 12) = 0 ← in factored form
equate each factor to zero and solve for x
x - 3 = 0 ⇒ x = 3
x - 12 = 0 ⇒ x = 12
substitute these values into (3) for corresponding value of y
x = 3 → y = 15 - 3 = 12
x = 12 → y = 15 - 12 = 3
Hence the 2 numbers are 3 and 12
Your answer is B because they both have a 3 in the tenths place, and the zero is there just to trick you, because you can add a zero to the end of a decimal and it will never change it's value.
Answer:
Step-by-step explanation:
Given that there are 6 dimes and 2 quarters (all distinct), and you select 4 coins.
i) No of ways to select 4 coins =
ii) No of ways to select 4 dimes =
iii) No of ways to select 3 dimes and 1 qr =
iv) no of ways to select atleast 3 dimes = no of ways for 3 dimes + no of ways for 4 dimes
=
The quotient of 5 and x is greater than 10
Answer:
cos = 3/5
sin = 4/5
Step-by-step explanation:
tan=4/3 Q1
if you use Pythagorean theorem
Becauseof Q1
c=5
to picture
sin = 4/5
cos = 3/5