Answer:
From the information given
x is time for which she ran at speed of 6mi/h and
y is time for which she biked at speed of 12.5 mi/h
total time = 3.5 h
total distance = 34 mi
so
6x + 12.5y = 34 and
x + y = 3.5
x = 3.5 - y
6 ( 3.5 - y) + y = 34
6.5y = 13 which gives
y = 2 and this
x = 1.5
so suze ran for 1.5 h and biked for 2 h
CHECK
speed of run X time of run + speed of biking x time of biking must be = total distance covered
6 × 1.5 + 12.5 × 2 = 9 + 25= 34 mi
which is true
It is A hope this helps :)
A number
, where
are distinct prime numbers, has
divisors.
We know that
has 7 divisors. 7 is a prime number, so among the numbers
there is only one that is equal to 7.
So,
That means
where
is a prime number.
, therefore the
has
divisors.
Answer:
6
Step-by-step explanation:
Before solve this you've to know that,
( + ) × ( - ) = ( - )
( + ) × ( + ) = ( + )
( - ) × ( - ) = ( + )
Let us solve now.
13 + (-7)
13 - 7
= 6
Hope this helps you :-)
Let me know if you have any other questions :-)
