Answer:
-x^2+2x-3
Step-by-step explanation:
(x^2 - 3x) + (-2x^2 + 5x - 3)
Combine like terms
-x^2+2x-3
Answer:
23
Step-by-step explanation:
Angles x and 157 are linear pairs,
x + 157 = 180
x = 180 - 157
x = 23
Hey there!
<h2>
ANSWER: 
</h2><h2>
EXPLANATION:</h2>

To write as power, you will see how many times you multiply the number 10.

Since it was multiplied 7 times, you would write it like this.

Hope this helps!

Answer:
I think its 633 or 633.6 sorry if its wrong
Step-by-step explanation: