Adding and subtracting are used in Please excuse my dear aunt sally, which if u never heard of this the P is for parentesies, E is for exponents, M stands for multiplication, D stands for Division, A is for adding, and S is for subtraction.
Also u use it during order of operations
You can use it for solving for a variable.
please refer to above attachment ↑↑
Answer:
x=5
Step-by-step explanation:
since it’s isosceles trapezoid, diagonals are equal.
x+10=2x+5
x=5
Let Sam be (S+8) years while his sister is S years.
S(S+8) = 105
S^2+8S-105 = 0
(S+15)(S-7) = 0
Sam’s sister is 7 years and Sam is 15 years old.
Answer:
A, D
Step-by-step explanation:
