X = ones, y = fives
x + y = 19....x = 19 - y
x + 5y = 59
19 - y + 5y = 59
19 + 4y = 59
4y = 59 - 19
4y = 40
y = 40/4
y = 10 <=== there are 10 five dollar bills
x + y = 19
x + 10 = 19
x = 19 - 10
x = 9 <=== there are 9 one dollar bills
We have been given a conditional statement and we are asked to find out whether this statement can be written as a bi-conditional statement or not.
First of all we will see what a bi-conditional statement is? A bi-conditional statement is a statement when the statement and its converse both are true. The first part of the statement tells a hypothesis and the last part tells us the conclusion of that hypothesis.
Since we know that 2 is a prime number and its not odd, so our given statement is false.
Now look at the converse of this statement. We can see by counter example of 9 that 9 is an odd number but it is not prime number.
Therefore, option D is the correct choice.
Answer:
(-3, -1); x = -3; y = -1
Step-by-step explanation:
-3x + 5y = 4; x + y = -4
solving via substitution
rearrange second equation: y = -x - 4
-3x + 5(-x - 4) = 4
-3x - 5x - 20 = 4
-8x -20 = 4
-8x = 24
x = -3
- 3 + y = -4
y = -1
(-3, -1)
Check
- 3 + -1 = -4
Answer:
50
Step-by-step explanation:
i did and the teachet said it is coorrexf to give put
Answer:
G
Step-by-step explanation:
out of a total of 280 spinners as the overall.
3/40 were defective
280 * 3/40 = 21
