Trent ordered 3 veggie sandwiches and 2 meat sandwiches.
Step-by-step explanation:
Given,
Total sandwiches ordered = 5
Total amount spent = $22
Cost of one veggie sandwich = $4
Cost of one meat sandwich = $5
Let,
x be the number of veggie sandwiches
y be the number of meat sandwiches
According to given statement;
x+y=5 Eqn 1
4x+5y=22 Eqn 2
Multiplying Eqn 1 by 4
Subtracting Eqn 3 from Eqn 2
Putting y=2 in Eqn 1
Trent ordered 3 veggie sandwiches and 2 meat sandwiches.
Keywords: linear equation, elimination method
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Answer:
b = 7
Step-by-step explanation:
108 = -2(-5 - 7b)
Distribute -2 to the terms inside the parenthesis:
108 = 10 + 14b
Subtract 10 from both sides of the equation to isolate 14b:
108 - 10 = 10 + 14b - 10
98 = 14b
Divide 14 on both sides of the equation to solve for b:
7 = b
Answer:
Hence, the relation R is a reflexive, symmetric and transitive relation.
Given :
A be the set of all lines in the plane and R is a relation on set A.
To find :
Which type of relation R on set A.
Explanation :
A relation R on a set A is called reflexive relation if every then
.
So, the relation R is a reflexive relation because a line always parallels to itself.
A relation R on a set A is called Symmetric relation if then
for all
.
So, the relation R is a symmetric relation because if a line is parallel to the line
the always the line
is parallel to the line
.
A relation R on a set A is called transitive relation if and
then
for all
.
So, the relation R is a transitive relation because if a line s parallel to the line
and the line
is parallel to the line
then the always line
is parallel to the line
.
Therefore the relation R is a reflexive, symmetric and transitive relation.