C should be the correct answer.
Answer:
Step-by-step explanation:
Inequality given for Sara,
-4(2x + 4) > 8x + 64
-8x - 16 > 8x + 64
-8x - 8x > 16 + 64
-16x > 80
-x > 5
x < -5
x = -12 will be the answer.
Option (3)
Inequality for Alezandro,
7x + 20 ≥ 2(x - 15)
7x + 20 ≥ 2x - 30
7x - 2x ≥ -30 - 20
5x ≥ -50
x ≥ -10
Therefore, x = 2 is the answer.
Option (2)
For Daria,
3(x - 17) < 9(1 - 3x)
3x - 51 < 9 - 27x
3x + 27x < 51 + 9
30x < 60
x < 2
x = -6 will be the answer.
Option (1)
For Jamal,
5(x + 11) > -4(-x - 12)
5x + 55 > 4x + 48
5x - 4x > 48 - 55
x > -7
x = 10 will be the answer.
Option (4)
Answer: 1.118
Step-by-step explanation:
Factor x Factor = Product
0.26(Factor) x 4.3(Factor) = 1.118(Product)
To check your work, divide the product by one of the factors and the result you should get is the other factor.
1.118(Product) ÷ 4.3(Factor) = 0.26(Factor)
-or-
1.118(Product) ÷ 0.26(Factor) = 4.3(Factor)
To show work:
.26
<u> x4.3</u>
.078
<u>+1.040</u>
1.118
we know that
The conjugate of a complex number is the number with equal real part and imaginary part equal in magnitude but opposite in sign
so
In this problem we have
the conjugate is equal to-------->
therefore
<u>the answer is the option</u>
10+3i
1/18 is the probablity of picking a black marble