Answer:
35 girls
Step-by-step explanation:
First add the ratios together ( 3+5) this will give you 8. Then divide the total number of students by 8, this will get you 7. Now multiply 7 to 3 and multiply 7 to 5. As the ratio of boy to girl is 3 to 5, to find how many girls are in the school play we multiply 7 to 5. This makes 35 girls.
If you want to check, 7 x 3 =21 boys and 7 x 5=35 girls. 35 +21= 56 (the total number of students).
B
You can only use the same value for x once
4n - 9 = -9
Step 1. Add 9 to both sides: 4n = 0
Step 2. Divide by 4: n = 0
Answer: 36 in²
Step-by-step explanation:
A=length times width
4.5 times 8 = 36
It depends on what was added. If an ADDEND was 0 then it would be identity property of addition, which states that if 0 is added to a number, the number would stay the same. If the SUM was 0, then it would be inverse property of addition, which states that a number plus it's opposite equals 0.