random algebra 1
In the equation, 7x+89=3, what would be the 1st step?
Subtracting 89 from both sides.
9x=22.806 (no rounding and give x as a decimal)
x=2.534
what does pedmas stand for
Parentheses
Exponents
Division
Multiplication
Addition
Subtraction
Joe buys a notebook for $4 and pays with a $10 bill. How much change does he get back?
6$
expand
4(x-3)+1
4x-11
589+x=893
x=304
in x/4=5, why does multiplying by 4 cancel the fraction
because it becomes 4x/4, and that is equal to (4/4)x and 4/4=1, that becomes 1x and you can remove the one.
give the steps for solving and answer the equation
3x-8=10
add 8 to both sides
divide both sides by 3 to get
x=6
A water bottle holds 600 mL. Joe drinks half of it in the morning . How much water is left in the bottle?
300ml
expand
9(4x+5x)
81x
3x+12=9
x=-1
(x+9)/7=63
x=432
9x+5y-0x+8x
Made by Zach
17x+5y
A movie theater charges $12 per ticket plus a one‑time service fee of $5(when buying, +5$ tax at the end). Joe pays a total of $53. Write an equation to represent the situation and find how many tickets he bought.
(no pst/gst)
12x+5=53
12 for dollars per ticket, +5 for tax
x=4
2(x+8)=2
x=-7
(x/3)-29=17
x=138
(5x/3)/0.5=20
x=6
Simplify
5ab - xy + 2ac − 7dj + 4m²n − 3xy + 11k
5ab - 4xy + 2ac − 7dj + 4m²n + 11k
A taxi charges $3 to start the ride plus $0.90 per kilometer. Joe has $20 and wants to know how far he can travel. Write an equation and determine the maximum number of kilometers he can ride.(round answer to nearest whole number)
(x-3)/0.9=20
x=21
7(x-2)/3=21
x=11
(17x-3x)/7+9=7
x=-1
(0.75x+89)/2=49
x=12
simplify
7y+9-(5(3y-4a)+3)
22y-20a+6
Joe knows sum of three consecutive odd numbers is 69. what is the product of the smallest number and the middle number and what is the equation used to solve.
equation
x+(x+2)+(x+4)=69
x=21
product=483
solve
2(x-8)+2(4x+8)=30
x=3