Answer:
x=-5/4
Step-by-step explanation:
Let the number be x and y
x.y=2/5 (The product of two rational numbers is 2/5)
if one of the number is -8/25
x.(-8/25)=2/5
(Here Substituted the value of one of the number yoy may substitute the value -8/25 in place of x
x=(2/5) *(-25/8)
x=-5/4
Answer:
a) 0,125 pounds/day
b) 8 days to eat one pound
Step-by-step explanation:
If Jason eats 10 ounces of candy in 5 days it meas that he eats 2 onces in a day
Then 16 ounces = 1 pound
2 ounces ⇒ x
x = 2/16 ⇒ x =1/8 ⇒ x = 0,125 pounds per day
Now he eats 2 ounces per day to eats 1 poun (16 ounces) he needs 8 days
Answer:
An acute triangle is less than 90 degrees. What set of numbers equal less to 90 degrees?
Possible numbers: 30, 12, 16. These equal 58.
Answer:
16.642cm
Step-by-step explanation:
Diameter of a circle = 5.3cm
Circumference of a circle = π(d)
= π x 5.3
= 3.14 x 5.3
= 16.642cm
Answer:
Definition: Two sets are equal if they contain the
same elements. I.e., sets A and B are equal if
∀x[x ∈ A ↔ x ∈ B].
Notation: A = B.
Recall: Sets are unordered and we do not distinguish
between repeated elements. So:
{1, 1, 1} = {1}, and {a, b, c} = {b, a, c}.
Definition: A set A is a subset of set B, denoted
A ⊆ B, if every element x of A is also an element of B.
That is, A ⊆ B if ∀x(x ∈ A → x ∈ B).
Example: Z ⊆ R.
{1, 2} ⊆ {1, 2, 3, 4}
Notation: If set A is not a subset of B, we write A 6⊆ B.
Example: {1, 2} 6⊆ {1, 3}
