Hey! Your answer for this is
7x^2 + 3x^2 = 10x^2
-2x + 15x = 13x
9 - 4 = 5
Hence, 10x^2 + 13x + 5.
Hope this helps!
Answer:
Ming exceed
miles her goal for that day
Exep-by-step explanation:

1st number = x-5
2nd number = x
3rd number = 3x-15
Total = 80
x-5+x+3x-15=80
5x-20=80
5x=100
x=20
The numbers are 20, 15, 45
It would be 21/32. To find this out, you would need to first multiply (-7/8) by (-3/4) which would give you 0.65625. Then look at your answer choices and divide each one ( (/) = same as dividing) until you get 0.65625 as one of the values.
12 cards + 24 cards = 36 cards
36 cards - 13 cards = 23 cards
You gave your brother 23 cards