If you are given the value of a variable, all you have to do is substitute the variable for the value. For instance, if you are given an expression 2x + 5y, where x = 4 and y = 2, you evaluate the expression by substituting x with 4 and y with 2. That gives you 2(4) + 5(2) = 8 + 10 = 18
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Answer:
0.4 or 0.7
Step-by-step explanation: it wouldnt take that long to throw the ball
Answer:
1.Given : Inequalities and
To find : Solve the system of inequalities by graphing ?
Solution :
Let the equation 1 -
Equation 2 -
Plot these equation in the graphing tool,
Equation 1 is shown by red dotted line.
Equation 2 is shown by blue dotted line.
The intersection point of the equations is the solution of the system i.e. (0,-1).
Refer the attached figure below.
The solution of inequalities is at (0,-1).
2. Y=5-2x/3
Step-by-step explanation:
Using the combination formula, it is found that the integers can be chosen in 870 ways.
<h3>What is the combination formula?</h3>
is the number of different combinations of x objects from a set of n elements, given by:
The resulting sum will be even if both numbers are even(2 from a set of 30) or if both numbers are odd(also 2 from a set of 30), hence:
The integers can be chosen in 870 ways.
You can learn more about the combination formula at brainly.com/question/25821700
2x+ y = -4 5x + 3y = -6
y= -4 -2x
substitute y=-4-2x into 5x+3y=-6
5x + 3(-4-2x) = -6
5x -12 -6x =-6
-x=6
x=-6
sub x=-6 into 2x+y=-4
-12 + y = -4
y=8
x=-6 and y=8
