A. 30.4 minutes
Hope this helps
Answer:
15x - y = - 6.....15x + 6 = y...so we sub in 15x + 6 in for y on the other equation
5x - 3y = -13
5x - 3(15x + 6) = -13 <== the new equation
Step-by-step explanation:
Answer:
x = 3 and x = -7
Step-by-step explanation:
The given quadratic equation is 
. We need to find the solution of this equation.
If the equation is in the form of 
, then its solutions are given by :
Here, a = 1, b = 4 and c = -21
Plugging all the values in the value of x, such that :
So, the solutions of the quadratic equation are 3 and -7.
Answer:
C
Step-by-step explanation:
The options are:
<em>A. 4 + (-4) = 0
</em>
<em>B. -8 + (-3) = -3 + (-8)
</em>
<em>C. 2 </em>×<em> 1/2 = 1
</em>
<em>D. 8/5 + 0 = 8/5</em>
<em />
The inverse property of multiplication states that the product of a number and its inverse is one.
The inverse of 2 is 1/2. The multiplication of 2 × 1/2 = 1
, as the property states.
hope this help Answer:( x - 3i√2)(x + 3i√2)
solve x² + 18 = 0
x² = - 18 ⇒ x = ±√- 18 = ±3i√2
factors are ( x - (3i√2))(x - (-3i√2))
x² + 18 = (x - 3i√2)(x + 3i√2
Step-by-step explanation:
