Answer: x = {1, -1, 2i, -2i}
<u>Step-by-step explanation:</u>
x⁴ + 3x² - 4 = 0
∧
-1 +4 = 3 this works!
(x² - 1)(x² + 4) = 0
x² - 1 = 0 and x² + 4 = 0
x² = 1 and x² = -4
x = ±1 and x = ± 2i
x = 1, -1 and x = 2i, -2i
Answer:
The second answer (ii) Three specific women must sit together
Step-by-step explanation:
If it's in a circle it wound go, wife man, wife man, wife man, wife man, at this point there isn't anymore men left so a women would sit between the first women who sat first and the last women would be last so 3 women would have to sit together! Hope it makes sense, and helps!
Answer:
5
Step-by-step explanation:
7 + (5 - 9)2 +3(16/8)
7 + (-4)2 +3(2)
7+(-8) +6
7 -8 +6
7 -2
5
<h3><u>The value of x, the first number, is equal to 3.</u></h3><h3><u>The value of y, the second number, is equal to 7.</u></h3>
x + 3y = 24
5x + 3y = 36
We can subtract both equations from each-other to cancel out a variable.
After doing so, we're left with:
-4x = -12
Multiply each term by -1
4x = 12
Divide both sides by 4.
x = 3
Now that we have a value for x, we can solve for y.
Plug this value into the first equation.
3 + 3y = 24
Subtract 3 from both sides.
3y = 21
Divide both sides by 3.
y = 7
Answer:
triangle MRP and triangle NPR looks like the right answer.
the selected option should be correct.
