In its most general form, algebra is the study of mathematical symbols and the rules for manipulating these symbols; it is a unifying thread of almost all of mathematics. It includes everything from elementary equation solving to the study of abstractions such as groups, rings, and fields.
The total would be 180 degrees because angles on a straight line would always add up to 180.
(3x+31)+(2x-6)=180
5x+25=180
-25 -25
5x=155
/5 /5
x=31
You don't define the ratio, so there are two answers:
If 2/3 is boys to girls, then,
2/3 = 24/x
x = 36 girls
If 2/3 is girls to boys, then,
2/3 = x/24
x = 16 girls
Answer:
It is decreased by 76 percent.
Step-by-step explanation:
The key skills are percentage and multiplication with percentages.
- You first have to get a variable. Let's use the letter o as a variable (o For orginial cost).
- Then we have to find out how much it is when o is decreased by 40 percent. 100% (or the whole) - 40% is 60%. Therefore, with a 40 percent decrease, It would be 60% of o, or 0.6o.
- Then, if it decreases by 60 percent, the final number would be 100% - 60 % or 40% of 0.6o. This means itbwould be 0.4 × 0.6o which is 0.24o
- 0.24o means that o is 24 percent of its orginial number, which is 100% - 24% or a 76 percent decrease.
<u>Hope</u><u> </u><u>you</u><u> </u><u>understood</u><u> </u><u>and</u><u> </u><u>have</u><u> </u><u>a</u><u> </u><u>nice</u><u> </u><u>day</u><u>!</u>
Answer:
20x-8=18x+6
Step-by-step explanation:
20x-18x=6+8()2x=14()x=14/2=7
