1. (2x-3)(x-4)
2x(x) =2x^2
2x(-4)= -8x
-3(x)= -3x
-3(-4)= 12
2x^2 -8x-3x+12= 2x^2 -11x+12
2. (x+2)(x+5)
x^2+5x+2x+10= x^2 +7x+10
3. (3x-1)(x+2)
3x^2 +6x-x-2= 3x^2+5x-2
Answer:
15
Step-by-step explanation:
10x - 23 + 10x - 23 + 106 = 360
20x + 60 = 360
20x = 300
x = 15
Answer:
Step-by-step explanation:
Tanisha, Elicia, and Ajua are cousins. Tanisha is twice as old as Ajua, and Elicia is two years older than Tanisha. The sum of all their ages is 37. Use variable expressions and calculate the age of each girl
Let us represent:
The age of :
Tanisha = a
Elicia = b
Ajua = c
Tanisha, Elicia, and Ajua are cousins. Tanisha is twice as old as Ajua
a = 2c
c = 2/a
Elicia is two years older than Tanisha.l
b = a + 2
The sum of all their ages is 37.
a + b + c = 37
We substitute
a + a + 2 + 2/a = 37
2a + 2 + 2/a = 37
Use variable expressions and calculate the age of each girl
1.23÷10 = 0.123 is a true statement
Given the expression 1.23÷10, we need to<u> check if the expression is equal to 0.123</u>
<h3>Fractions</h3>
Fractions is a ratio of two integers a/b
Given
Convert the decimal to a fraction as shown:
The expression becomes:
= 123/100 * 1/10
= 123/1000
Convert back to decimal
1.23÷10 = 0.123
This shows that 1.23÷10 = 0.123 is a true statement
Learn more on division here: brainly.com/question/12957834
