Answer:
Step-by-step explanation: I think it's 7 according to my calculations
Answer:
Answer is 9.4121
Step-by-step explanation:
Ik this cuz I jist took a google classroom test with this
Answer:
The system has two distinct solutions.
Step-by-step explanation:
The given system of equations are:

and

In order to determine the number of solutions the two equations have, we need to equate the two equations to obtain,

We now group all terms on the left hand side and equate everything to zero.


This is now a quadratic equation in
with
.
At this stage we check the number of solutions using the discriminant.


Since the discriminant is greater than zero, the equation will have two distinct roots.
Therefore the system of equations has exactly two distinct solutions.
If you wish to see these solutions, you can continue as follows;
We factor
to obtain,



When 
Then we have,

When 
Then we have,

See graph
Answer:
Step-by-step explanation:
Find the width as below
- l² + w² + h² = d², where l- length, w- width, h- height, d- the distance between top and bottom corners
Substitute the values and solve for w
- 4² + w² + 12² = 13²
- w² + 160 = 169
- w² = 9
- w = 3 feet
Now find the volume
- V = lwh
- V = 4*3*12 = 144 ft³
By proportion:-
4 / 30 = x / 75 where x is number needed for the '75' country
30x = 300
x = 10
They need 10 drivers.