This way Sally travels 12+9=21 kilometers.
If there was a direct way she could go to work, that way would have been 15 km (because her way to work forms a right-angled triangle).
Therefore her journey would be 21-15=6 km shorter. Choice A.
Answer:
The correct answer is 2 . (1 , 3)
Step-by-step explanation:
A function is used to denote a particular relationship between variables. They can even be visualized as an input-output machine.
Every function has a domain set and a co-domain set. A function maps elements from domain to the elements of co-domain.
Here the domain can be considered as { 0 , 2 , 5 , 7}.
Here the co- domain can be considered as { 1 , 3, 8 , 2}.
For a function to be a valid function, all elements from the domain should have an image in the co- domain and every element of domain should have exactly one image in the co-domain.
Here the options 1 , 3 and 4 violate the second necessary criteria for the function to be valid.
Hence (1 , 3) is the correct answer.
Value of x is used to consider unknown value. The letter “x” is commonly used in algebra to indicate an unknown value. It is referred to as a “variable” or, in some cases, a “unknown.” In x + 2 = 7, x is a variable
Answer:
12
Step-by-step explanation:
1:2:4
let josh=1x
james=2x
john=4x
josh has nine sweets less than john
4x-1x=9
3x=9
x=3
john's sweet=4x
4(3)=12
Her salary 4 years ago would have been $30,000.
If 45,000 is 15,000 less than double her previous salary, we must first add 15,000 to 45,000 to find what double her salary was.
45,000+15,000=60,000.
Since this is twice her salary, we divide this by 2.
60,000/2= 30,000.
So, her salary 4 years ago would have been $30,000.
I hope this helps!
