Which of the following relations represents a function? A. {(1, 1), (1, 2), (1, 3)} B. {(1, 1), (2, 1), (3, 1)} C. {(1, 1), (2,
ludmilkaskok [199]
Answer:
D. Both B and C.
Step-by-step explanation:
For an ordered pair relation to represent a function, then none of the first coordinate must repeat.
In other words, no two or more ordered pairs should have the same first coordinate.
For options A, the first coordinate repeated.
For options B and C, none of the first coordinates repeat.
Both represent a function.
The correct choice is D
Let
x------------> the cost of one <span>slices of cheese pizza
y------------> the cost of one soda
we know that
3x+2y=8.75
2x+4y=8.50
using a graph tool
see the attached figure
the solution is
x=2.25
y=1
so
x+3y-----> 2.25+3*1------> 5.25
the answer is the option B) $5.25</span>
Answer:
189$
Step-by-step explanation:
25 times 5 = 125
0.20 times 320 = 64
125 + 64 = 189
Question 3:
Since, EG = EF + FG
x = 13
So, EF =
=
So, EF = 24 units.
Question 4:
Since,
So,
So, x =2
Question 5:
Since,
By being congruent, the measures of the segments are equal.
So,
So, x = 2
Now, XZ =
XY = 9x - 7 =
YZ = 3x + 5
XZ = XY + YZ = 11 + 11 = 22 units.
Question 6:
It is given that
It means that the measures of these two angles are equal.
Since, measure of angle ABC is 35 degrees.
Therefore, the measure of angle DBE is 35 degrees.