10C Equivalent
Show how this equation is equivalent by the operation used:
2x + 10 = 15 and 2x =5
What is -10
Find x:
4x = 20
What is 5
Find k:
5k/2 = 20
What is 8
Create an equation:
6(x + 3)
What is 6x + 18
Consider the Rule: k=5b + 3
Find k when b = 11
What is 58
Show how this equation is equivalent by the operation used:
10(b + 3) = 20
What is divide by 10
Find q:
10 + 8q =98
What is 11
Find u:
0 = 12 + (2u/5)
Collect like terms
3a + 8a + 2 - 2a + 5
What is 9a + 7
A game of AFL has the score, S, is given by S =6g + b where g = goals and b = behinds.
Coburg Lions have scored 11 goals (g=11) and 9 behinds (b =9) and Box Hill Hawks have scored 15 goals, 2 behinds. What was the final score for both teams?
What is
Coburg = 75
Box Hill = 92
Show how this equation is equivalent by the operation used:
4 = 12 - x and 8 = 2(12 - x)
What is multiply by 2
Jenny buys 12 pencils and 5 pens for the new school year, the pencils cost $1 each.
If pens cost $x
The total cost was $14.50. Write an equation to describe this:
What is 12 + 5x = 14.50
Write the equation and solve it:
3 is added to x, and the result is divided by 4, giving a result of 2
x = 5
Solve for b
3(b+5) + 4b = 29
What is b = 2
The sum of Kates current age in years and her age next year is 19. How old is Kate?
2k + 1 = 19
2k = 18
k = 9
Kate is 9 years old
Show that 5x - 3 = 32 and x + 2 = 9 are equivalent
What is...
+3 to both sides
/5 to both sides
+2 to both sides
Solve to find the pronumeral:
5j + 4 = 10 + 2j
What is j = 2
A group of 5 people go out for dinner and split the bill evenly. They each pay $31.50.
If B represent the cost of bill, write an equation to describe this.
What is b/5 = 31.50
Write and solve this equation:
5 is added to x and then this is doubled, giving the result of 14
What is 2(5+x) = 14
Consider the rule: F =3a + 2b. Find:
F if a = 10 and b = 3
What is F = 36
What is:
-2 to both sides
/3 to both sides
x10 to both sides
+ 1 to both sides
7(3 +5x) - 21 + 2(x-x) = 210
What is x=6
Solve for x:
(2x + 5)/4 = 3
What is x = 7/2
Solve:
2(3x + 4) + 5(6x + 7) + 8(9x + 10) = 123
What is x = 0
An isosceles triangle is a triangle with all angles inside having the same angle. Prove what angle a equals with an equation. (Maybe google how many degrees are in a triangle)
What is 3a = 180
/3
a = 60 degrees