Answer:
Option D
Step-by-step explanation:
To check whether (-2,2) is a solution to the system, let us substitute these values and check.
A. 3x − y = −4
5x − y = −8
3(-2)-2=-8 is left side not equal to right side.
B. 3x − y = −4
5x + y = −8
Since I equation is not satisfied not the matching system
C.3x + y = −4
5x − y = −8
I equation gives 3(-2)+2=-4
5(-2)-2 =-12
Since I equation is not satisfied not the matching system
Since II equation is not satisfied not the matching system
D. 3x + y = −4
5x + y = −8
3(-2)+2=-4
5(-2)+2=-8
Thus D is the system which has solution (-2,2)
Answer:
a = 589 and b = 4
c = 521 and d = -7
Step-by-step explanation:
Here, we are to identify coefficient and exponent.
5,890,000 can be represented as 589 * 10,000
Thus we have 5,890,000 as 589 * 10^4
So a = 589 and b = 4
0.0000521 = 521 * 10^-7
so c = 521 and d = -7
Answer:
For any mathematical expression follow the BODMAS rule which states that we should calculate the Brackets first (2 + 4 = 6), then the Orders (52 = 25), then any Division or Multiplication (3 x 6 (the answer to the brackets) = 18), and finally any Addition or Subtraction (18 + 25 = 43).
Step-by-step explanation:
(5+4) × 5 + 3.3
Bracket open = 9
Since there is no division, so multiply 9×5, which is 45
Then add, 45+3.3
Answer= 48.3
Answer:
The domain is the interval (-∞,∞)
The range is the interval [-4,∞)
Step-by-step explanation:
we have
This is the equation of a vertical parabola in vertex form
The vertex is the point (-4,-4)
The parabola open upward (because the leading coefficient is positive)
The vertex represent a minimum
The domain is the interval (-∞,∞)
so
The domain is all real numbers
The range is the interval [-4,∞)
so
The range is all real numbers greater than or equal to -4
