No because if a number is a whole number then it is also a rational number and an integer
14 I think.You would subtract 15-8 which is 7 and then add 7 which is 14
Answer:
3 seconds
Step-by-step explanation:
2 minutes equals 120 seconds
120 divided by 40 is 3
Answer:
9*((2-1)/9)
or
<u>2</u><u> </u><u>-</u>1
9
<u>2-9</u><u> </u>=<u>-7</u>
9. 9
9× <u>-7</u>
9
=<u>-7</u>
<u>2-</u> <u>3</u>
9. -3
=(1.22222222222)
or
11/9
or
1*(2/9)
Answer:
k = 8
Step-by-step explanation:
Since the roots of the equation 3x² + 2x + k are x₁ and x₂ and 2x₁ = 3x₂.
By the roots of an equation, ax² + bx + c , where its roots are x₁ and x₂. It follows that sum of roots are x₁ + x₂ = -b/a and product of roots are x₁x₂ = c/a.
Comparing both equations, a = 3 b = 2 and c = k.
So, x₁ + x₂ = -b/a = -2/3 and x₁x₂ = c/a = k/3
x₁ + x₂ = -2/3 and x₁x₂ = k/3
3x₁ + 3x₂ = -2 (1) and 3x₁x₂ = k (2)
Since 2x₁ = -3x₂, and -2x₁ = 3x₂substituting this into equations (1) and (2) above, we have
3x₁ + 3x₂ = -2 (1) and 3x₁x₂ = k (2)
3x₁ + (-2x₁) = -2 and x₁(3x₂) = k
3x₁ - 2x₁ = -2 and x₁(3x₂) = k
x₁ = -2 and x₁(-2x₁) = k
x₁ = -2 and -2x₁² = k
Substituting x₁ = -2 into -2x₁² = k, we have
-2x₁² = k
-2(-2)² = k
2(4) = k
8 = k
So, k = 8
