Oh ok so square root of 2 is irrational since it goes on and on. square root of 18 is an irrational number too
The solutions to the quadratic equations are:
a)
b) x = -8, x = 5.
A quadratic function is given according to the following rule:
The solutions are:
In which:
Item a:
The coefficients are a = 5, b = -6, c = -2, hence:
Item b:
The equation is:
x² + 3x = 40
x² + 3x - 40 = 0.
It can be simplified as follows:
(x - 5)(x + 8) = 0.
Hence the solutions are:
More can be learned about quadratic equations at brainly.com/question/24737967
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Answer:
$19.01 I think
Step-by-step explanation:
you have to divide the total price by 120 because the family is paying what the food cost...the 100% and then they add 20% of that 100% to make 120%...therefore...when you divide the price by 120 you'll get 1%. Finally you multiply the 1% by 20 to find the tip.
$114.10 ÷ 120 = 0.95 × 20 = the tip ( $19.01 )
I'm sorry if that doesn't make sense
Answer:
Step-by-step explanation:
Write down what the problem is saying;
Distribute;
Simplify,
Inverse operations,
Answer:
x=17/3, y=10/3. (17/3, 10/3).
Step-by-step explanation:
4x-5y=6
2x+5y=-28
-----------------
4x-5y=6
-2(2x+5y)=-2(-28)
--------------------------
4x-5y=6
-4x-10y=56
------------------
-15y=-50
15y=50
y=50/15
y=10/3
4x-5(10/3)=6
4x-50/3=6
4x=6+50/3
4x=18/3+50/3
4x=68/3
x=(68/3)/4
x=(68/3)(1/4)=68/12=17/3