Given the value above, <span>2,000,947 is in the form of STANDARD FORM. To write this in an expanded form, it will be like this: 2, 000, 000 + 947. The exponential form of 2,000,000 is 2 x 10^6. Hope this is the answer that you are looking for. Have a great day!</span>
Answer:
(x+11)(x-11) its a difference of squares formula, when you FOIL it out the positive 11x and negative 11x will cancel out
Step-by-step explanation:
78 is the answer
If you substract 914-836 that equals 78
And if you substract 836-758=78 too
Answer:
a=2
Step-by-step explanation:
-15a-19-35=-84
-15a-19=-49
-15a=-30
a=2
I'd suggest using "elimination by addition and subtraction" here, altho' there are other approaches (such as matrices, substitution, etc.).
Note that if you add the 3rd equation to the second, the x terms cancel out, and you are left with the system
- y + 3z = -2
y + z = -2
-----------------
4z = -4, so z = -1.
Next, multiply the 3rd equation by 2: You'll get -2x + 2y + 2z = -2.
Add this result to the first equation. The 2x terms will cancel, leaving you with the system
2y + 2z = -2
y + z = 4
This would be a good time to subst. -1 for z. We then get:
-2y - 2 = -2. Then y must be 0. y = 0.
Now subst. -1 for z and 0 for y in any of the original equations.
For example, x - (-1) + 3(0) = -2, so x + 1 = -2, or x = -3.
Then a tentative solution is (-3, -1, 0).
It's very important that you ensure that this satisfies all 3 of the originale quations.
