Answer:
it will take them 7 days 
Step-by-step explanation: 
1200+100
- 1300
- 1400
- 1500
- 1600
- 1700
- 1800
- 19 00
3230-190
- 3040
- 2850
- 2660
- 2470
- 2280
- 2090
- 1900
you can use a calculator to check it if you want.
 
        
                    
             
        
        
        
Answer:
176 cm
Step-by-step explanation:
You can use the Pythagorean theorem to find the hypotenuses of each triangle by sibstituting the given lengths of each leg.
 
        
             
        
        
        
Solving the system we get, x= -1, y= -2 and z= 0
Step-by-step explanation:
Solving the equations to find x, y and z

Adding eq(1) and eq(2)

Adding eq(2) and eq(3)

Multiplying eq(4) by 3 and eq(5) by 2

So, value of z =0
Putting value of z in eq(4)

So, value of x = -1
Now putting value of z=0 and x =-1 in equation 1

So, value of y = -2
So, solving the system we get, x= -1, y= -2 and z= 0
Keywords: Solve the system
Learn more about Solve the system at:
#learnwithBrainly
 
        
             
        
        
        
Answer:
The rectangle is 16*18
Step-by-step explanation:
The area of a rectangle is length * width and the perimeter is 2 times length * width
A = l*w
P = 2(l+w)
Replacing A and P
288 = l*w
68 = 2(l+w) => 34 = l+w => 34 - w = l
replacing l in the area
288 = (34 - w) w
w^2 - 34w + 288 = 0
(w - 16)(w - 18)
w = 16
w = 18
replacing in 34 - w = l
you get that when w = 16, l = 18 and when w = 18, l = 16
 
        
             
        
        
        
1) 2.3 x 1000
2) 2.3 x 10^3
3) Both reveal the same answer of 2,300 and are equal. Only displayed differently