Answer:
Alice lives <u>9 miles</u> far away from Carla.
Step-by-step explanation:
Given:
Alice cycles to Carla's house at 12 mph and returns by car at 36 mph.
If the round trip takes 1 hour.
Now, to find the distance from Carla to Alice house.
So, let the distance between the houses of Carla and Alice be 
.
Now, we solve by using the formula:
Distance/speed = time
Alice cycles to Carla house = 
And return by car = 
Time taken for round trip = 1 hour.
Adding both the distance to get the value of x:
<em>Dividing both sides by 4 we get:</em>
Therefore, Alice lives 9 miles far away from Carla.
Answer:
<h2>y=-6/5x</h2>
Step-by-step explanation:
13/99 can't be simplified any further, because 13 is a prime number, meaning that 13 has only 2 factors 1 and itself.
Answer:
Go ask your teacher... be a good student
Answer:
-276
Step-by-step explanation:
We'll use the method of cofactors. Use the coefficient +6 for
9 2
8 10
This gives you one third of the solution: 6 {(9)·(10) - (8)(2) }, or 444.
Next, use the coefficient 9, taking care to change the sign to -9 as follows:
9 1
-9 | | = -9(90 - 8) = -9(82) = -738
8 10
Finally with +2 as y our coefficient, evaluate the cofactor
9 1
9 2
ending up with
+2(18-9) = +2(9) = 18
Finally add these three results together:
+444 - 738 + 18 = -276
This, the determinant, D, is -276 (the fourth answer choice)
