Answer:
y = 4
x = -1
Step-by-step explanation:
4x + 2y = 4 Eq. 1
3x - y = -7 Eq. 2
from the Eq. 2
3x = y - 7
3x + 7 = y Eq. 3
Replacing the value of the Eq. 3 in the Eq. 1
4x + 2(3x+7) = 4
4x + (2*3x + 2*7) = 4
4x + (6x + 14) = 4
10x + 14 = 4
10x = 4 - 14
10x = - 10
x = -10/10
x = -1
from the Eq. 3
3x + 7 = y
3*-1 + 7 = y
-3 + 7 = y
4 = y
Check:
from the Eq. 1
4x + 2y = 4
4*-1 + 2*4 = 4
-4 + 8 = 4
Use Pythagorean theorem
/17 ^ 2 + x ^ 2 = 20 ^ 2
17 + x^2 = 400
x^2 = 383
x = 19.57
False, B actually belongs to U. B has all its numbers in set U but U doesn't have all its numbers in set B.
Answer:
√29 ≈ 5.39
Step-by-step explanation:
There are an infinite number of irrational numbers between any pair of numbers you care to name. Some are "algebraic" in that they are roots of polynomials. Some are not. You can make up one simply by identifying a rule that can be used to determine the value.
π + 2.2 ≈ 5.34 . . . . sum of rational and irrational
√29 ≈ 5.39 . . . . . . root of a number that is not a square
5.21234567891011121314151617181920... digits are sequential integers
≈ 5.21
∛150 ≈ 5.31 . . . . . . root of a number that is not a cube
Answer:
Jill can visit these 3 cities in 6 different orders.
Step-by-step explanation:
As question clearly tells that Jill plan to visit 3 different cities M, L, and S.
She plans to visit each city exactly once and return to City C after 3 visits.
So the different orders in which she can visit 3 cities will be
M L S C
M S L C
L M S C
L S M C
S M L C
S L M C
In other words number of ways she can visit = 3! = 6
So there are 6 orders in which she can visit these three cities.
