Question

Anyone know the answer to these?

Answer 1

3) 4x=15

6)b=$2.5

1) n= -12

Explanation:

3. Given the equation
`(1)/(2)(4+8x)=17`,

#Expand by removing the brackets:

`2+4x=17`

#We then group the like terms to solve for x:

2+4x=17

4x=15

Hence, the equations equivalent is 4x=15

6. Let b be the cost of each bag of snack.

-Given that there are 4 friends who spent a total of $34 and each ticket costed $6.

-We equate the costs to the total to solve for b:

`C_T=C_t+C_b\\\\34=4* 6+C_b\\\\C_b=4b\\\\\therefore 4b=10\\\\b=2.5`

Hence, the cost of each bag of snack is $2.5

1) Given the equation
`-(2)/(3)n+7=15`

#First. we multiply each term by 3 to remove the fraction:

`3*-(2)/(3)n+3*7=15*3\\\\-2n+21=45`

#We then group like terms together to solve for n:

`-2n=45-21\\\\-2n=24`

#Divide all terms by -2 to get the value of n:

`(1)/(-2)* -2n=(1)/(-2)*24\\\\n=-12`

Hence n= -12