Answer:
Tip: 4,2
Total cost: 32,2
Step-by-step explanation:
Tip: (28×15)÷100 = 4,2
Total cost: Tip + original money
--> 4,2 + 28 = 32,2
Step-by-step explanation:
37x + 41y = 70 --- R¹
41x + 37y = 86 --- R²
R¹ + R² : 78x + 78y = 156
78(x + y) = 156
x + y = 2 --- R³
R¹ - R² : -4x + 4y = -16
4(y - x) = -16
y - x = -4 --- R⁴
R³ + R⁴ : 2y = -2
y = -1
R³ - R⁴ : -2x = -6
x = 3
Answer:
13.8 cm
Step-by-step explanation:
the sides of the triangle measure 3.6, 5.7,4.5cm?
So, we have
perimeter is 3.6 + 5.7 + 4.5
13.8 cm
Answer:
The answer to your question is: letter A
Step-by-step explanation:
See the picture below
When we divide the polynomial by the factor the result is zero, that's why letter A is the factor.
When we divide the polynomial by B, C or D the residue is not zero, then they are not factors.
Answer:
x>1
Step-by-step explanation:
x + 18 > 19
Subtract 18 from each side
x + 18-18 > 19-18
x>1
