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Semenov [28]
3 years ago
7

What percentage of 9th-grade boys are likely to be involved in drinking?

Mathematics
2 answers:
rodikova [14]3 years ago
7 0
87% because most teens will have a source to alcohol.
antiseptic1488 [7]3 years ago
4 0
The correct answer of the given question above would be 33.9%. The percentage of 9th grade boys that are likely to be involved in drinking is 33.9%. Whereas, for binge drinking, the percentage result is 18.8%. But the alcohol use among youths has declined. 
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I don't understand the substitution method?
liq [111]
It depends on what variable you are tying to solve for first. Say you are trying to solve for x first and then y on the first problem you wrote.

In substitution you solve one of the equations for example with
6x+2y=-10
2x+2y=-10
you solve 2x+2y=-10 for x

2x+2y=-10
-2y = -2y (what you do to one side of the = you do to the other)
2x=-10-2y (to get the variable by its self you divide the # and the variable)
/2=/2 (-10/2=-5 and -2y/2= -y or -1y, they are the same either way)
x=-5-y

now you put that in your original equation that you didn't solve for:
6(-5-y)+2y=-10 solve for that
-30-6y+2y=-10 combine like terms
-30-4y=-10 get the y alone and to do this you first get the -30 away from it
+30=+30
-4y=20 divide the -4 from each side
/-4=/-4 (20/-4=-5)
y=-5

now the equation you previously solved for x can be solved for y.
x=-5-y
x=-5-(-5) a minus parenthesis negative -(- gives you a positive
-5+5=0
x=0

and now we have solved the problem. x=0 and y=-5

6 0
3 years ago
Abcd is parallelogram with m
user100 [1]

Answer:

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Step-by-step explanation:

3 0
3 years ago
52 is what percent of 260​
chubhunter [2.5K]

if we take 260 to be the 100%, what is 52 off of it as a percentage?

\bf \begin{array}{ccll} amount&\$\\ \cline{1-2} 260&100\\ 52&x \end{array}\implies \cfrac{260}{52}=\cfrac{100}{x}\implies 5=\cfrac{100}{x} \\\\\\ 5x=100\implies x = \cfrac{100}{5}\implies x=20

3 0
3 years ago
1+4=5 2+5=12 3+6=21 what is 8+11=
BlackZzzverrR [31]
8+11 is 19 Hope it helped
7 0
3 years ago
the value of your house is Rising by 16454 per year. if it is worth 202,420 today what will it be worth in 3 years
tekilochka [14]
251,782. 

Just add 3*16,454 to the original number. 
5 0
3 years ago
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