<span>The answer is that 79 IS NOT correct because the riddle says "my ones digit is 2 LESS than my tens digit.." and 79 has 7 in tens and 9 in ones.</span>
598
explanation: 500+98= 598
Answer:
1)6
2)36
Step-by-step explanation:
-$-#--#-#+#+#++#+#+#+#
Answer:
--- (a)
---- (b)
Step-by-step explanation:
Given
Per ride (r) = $8
Per baseballs (s) = $6
Total = $100
Required
Represent using an equation
If 1 ride is $8.
r rides would be 8r
If 1 baseball is $6
s baseballs would be 6r.
So, total is:
![8r + 6s = 100](https://tex.z-dn.net/?f=8r%20%2B%206s%20%3D%20100)
Solving (b):
Value of s when r = 14
![8r + 6s = 100](https://tex.z-dn.net/?f=8r%20%2B%206s%20%3D%20100)
Substitute 14 for r
![8 * 14 + 6s = 100](https://tex.z-dn.net/?f=8%20%2A%2014%20%2B%206s%20%3D%20100)
![112+ 6s = 100](https://tex.z-dn.net/?f=112%2B%206s%20%3D%20100)
Solve for 6s
![6s = 100 - 112](https://tex.z-dn.net/?f=6s%20%3D%20100%20-%20112)
![6s = -12](https://tex.z-dn.net/?f=6s%20%3D%20-12)
Solve for s
![s = -12/6](https://tex.z-dn.net/?f=s%20%3D%20-12%2F6)
![s = -2](https://tex.z-dn.net/?f=s%20%3D%20-2)
Answer:
<em>We can't find a unique price for an apple and an orange.</em>
Step-by-step explanation:
Suppose, the price of an apple is
and the price of an orange is ![y](https://tex.z-dn.net/?f=y)
They need $10 for 4 apples and 4 oranges. So, the first equation will be.......
![4x+4y=10 ........................................(1)](https://tex.z-dn.net/?f=4x%2B4y%3D10%20........................................%281%29)
They also need $15 for 6 apples and 6 oranges. So, the second equation will be........
![6x+6y= 15 ........................................(2)](https://tex.z-dn.net/?f=6x%2B6y%3D%2015%20........................................%282%29)
Dividing equation (1) by 2 on both sides : ![2x+2y= 5](https://tex.z-dn.net/?f=2x%2B2y%3D%205)
Dividing equation (2) by 3 on both sides : ![2x+2y=5](https://tex.z-dn.net/?f=2x%2B2y%3D5)
So, we can see that both equation (1) and (2) are actually same. That means, we will not get any unique solution for
and
here. Both
and
have <u>"infinitely many solutions"</u>.
Thus, we can't find a unique price for an apple and an orange.