Answer:
9. -4x+19y-7
10. 7x+20
Step-by-step explanation:
9. To simplify this expression, simply combine like terms. Add all of the terms with the x variable together, then the terms with the y variable, then the constant terms. I will show this step by step, but usually you do not have to show this work. The order of the terms does not matter.
x variable terms: (4x-8x)+7y-2+6y+6y-5= -4x+7y-2+6y+6y-5
y variable terms: (7y+6y+6y)-4x-2-5=19y-4x-2-5
constant terms: (-2-5)-4x+19y=-4x+19y-7
10. To simplify this expression, expand all terms and then combine like terms. The first term can be expanded by multiplying each term in the parentheses by 2.
Expand terms: 2(5+3x)+(x+10)= 10+6x+x+10
Now, you can combine like terms as done on the last problem. Note that I got rid of the parentheses in the second term, as they did not matter (since there was no term in front of them).
x variable terms: (6x+x)+10+10=7x+10+10
constant terms: (10+10)+7x=7x+20
93. Sarafina had 34 out of 99 hits when she was at bat during the softball season.
Let’s solve for the average rate of Sarafina during this softball season.
=> 99 hits = 100% of the average
=> find the percentage of 34 hits.
Here are the solutions:
=> 34 hits / 99 hits = 0.3434… repeating decimals. Let’s round this to nearest hundredths
=> 0.34 * 100% = 34%
Thus, Sarafina was able to hit 34% of the total number of batting in softball season.
Answer:
he started fishing by 5:10pm
Step-by-step explanation:
just subtract 1:30 from 6:40
Answer:
8x^2 -6x-2
Step-by-step explanation:
formula= ab^2(- or +)b-ab
