Subs.
If x = 2, what is the value of the expression (x + 1)?
3
x + 5 = 12
Show your work!
x = 7
2x + 3 = 11
x = 4
x - 4 = -3
Solve for x.
x = 1
A car travels at a speed of 60 km per hour. If it travels for (t) hours, create an equation to represent the total distance traveled.
Distance = ?
Distance = 60t
If a = 4, what is the value of the expression 5a?
What is "x" called in an equation?
20
Variable.
x + 2.5 = 7.3
What is the value of x?
x = 4.8
1.5x + 2.3 = 5.8
X = ???????
x = 2.33
-2x + 15 = -5
x = 10
The temperature outside is 15°C. If the temperature increases by x, the new temperature is 25°C, create an equation to find x.
Solve!
15 + x = 25
x = 25 - 15
x = 10
The temperature increases by 10°C.
10
3.2 = x - 1.4
x = 4.6
a ÷ 4 + 11 = 33
a = 88
6n + (-2) = -38
n = -6
Four identical bags of cement and a concrete block have a total mass of 98 kg. The concrete block has a mass of 8 kg. What is the mass of each bag of cement?
Show your work!
Let x be the mass of one bag of cement.
4x + 8 = 98
4x = 98 - 8
4x = 90
x = 22.5
The mass of each bag of cement is 22.5 kg.
If x = 100, what is the value of the expression (2x - 33)?
167
Show how you would use the Balance Method and the Movement Method to solve the equation (x - 4 = 8).
Balance:
x - 4 + 4 = 8 + 4
x = 12
Movement:
x = 8 + 4
x = 12
n ÷ 3 + 6.6 = 33.7
Show your work.
1 - 3x = -11
x = ?????
x = 4
Deb bought three identical binders and received $1.15 change from $10. How much did each binder cost?
Deb received $1.15 in change from $10, so we can find out how much she spent by subtracting the change from the total amount given.
Total Spent = $10 - $1.15
= $8.85
Let x be the cost of each binder. Since Deb bought three identical binders, the equation for the total spent is:
3x = 8.85
x = 2.95
Each binder cost approximately $2.95.
If a = 5 and b = 3, what is the value of the expression (3a - 2b + 4)?
13
5.6 = 2.1 + x
Show your work.
If = signs do not line up, no points will be awarded!
x = 3.5
4.2b + 13.5 = 29.4
If = signs do not line up, say goodbye to 500!
Round answer to two decimal places.
b = 3.79
20 - 100x = -280
x = 3
A grocery bag contains five apples, one pineapple, and one orange. The total mass of the fruit is 2.7 kg. The mass of the pineapple is 1.25 kg, and the mass of the orange is 0.2 kg. Create and solve an equation to determine the average mass of each apple.
Given:
There are 5 apples with a mass of 5a.
The mass of the pineapples is 1.25 kg.
The mass of the orange is 0.2 kg.
The total mass of the fruits is 2.7 kg.
Now, we can write the equation:
5a + 1.25 + 0.2 = 2.7
5a + 1.45 = 2.7
5a = 1.25
a = 0.25
The average mass of each apple is 0.25 kg.