Hello!
To solve algebraic equations or inequalities, we will need to use SADMEP. SADMEP is an acronym for subtraction, addition, division, multiplication, exponents and parentheses. SADMEP is strictly used when solving algebraic equations/inequalities.
2. x - 7 > 10 (add 7 to both sides)
x > 10
3. 3x ≤ 21 (divide both sides by 3)
x ≤ 7
4. 5a - 2 < 18 (add 2 to both sides)
5a < 20 (divide both sides by 5)
a < 4
5. 2t + 8 ≥ -4(t + 1) (use the distributive property)
2t + 8 ≥ -4t - 4 (add 4t to both sides)
6t + 8 ≥ -4 (subtract 8 from both sides)
6t ≥ -12 (divide both sides by 6)
t ≥ -2
<u>Final answers:</u>
- 2. x > 10
- 3. x ≤ 7
- 4. a < 4
- 5. t ≥ -2
9x-20=7
9x=27
x=3
Hope that helps you :)
Answer:
x^2 -3x+2
Step-by-step explanation:
(x - 2)(x - 1)
FOIL
first: x*x = x^2
outer: -1*x = -x
inner: -2*x =-2x
Last: -2*-1 =2
Add together
x^2 -x-2x+2
Combine like terms
x^2 -3x+2
Answer:
Height of the tank is 1.5m
Step-by-step explanation:
Given
Shape: Cuboid
Base Dimension = 2.5m by 2m
Volume = 7500 litres
Required
Determine the height of the tank
First, the area of the base has to be calculated;


Next is to calculate the height using volume formula;

Recall that Volume = 7500L [Convert to m³]

So;


Hence;

Substitute 7.5m³ for Volume and 5.0m² for Area in the following formula


Divide both sides by 5.0m²




<em>Hence, the height of the tank is 1.5m</em>