
7x-y=9
3x-y=5 (multiply by -1 both sides of the equation)
7x-y=9
-3x+y=-5 (now add both equations)
7x-3x-y+y=4
4x=4 (divide by 4 both sides of the equation)
x=1
y=3x-5=3×1-5=-2
y= -2
answer: x=1, y=-2
 
        
             
        
        
        
Answer: A
Step-by-step explanation: 
 
        
                    
             
        
        
        
Answer:
u =  
Step-by-step explanation:
Since u varies inversely as s³, then
u ∝ 
To convert to an equation multiply by k the constant of variation
u = k ×  =
 = 
 
        
             
        
        
        
Answer:
46.67 cubic feet
Step-by-step explanation:
Given :The rectangular base is 35 square feet, with a height of 4 feet.
To Find :What is the volume of the tent?
Solution :
Volume of rectangular base pyramid = 
Since we are given that The rectangular base is 35 square feet, i.e. area of rectangular base = l*w = 35 sqaure feet
Height of pyramid h = 4 feet
Putting values in formula
Volume of rectangular base pyramid = 
                                                              =
                                                              =46.67 cubic feet
Thus  volume of the tent is 46.67 cubic feet
 
        
             
        
        
        
Step-by-step explanation:
S is equal to Q
Q= 48.5
there are two angels (S,Q). They equal 48.5 
so 48.5x2= 97
all angels together (QRSP) equals 360
you can take the 97 and subtract it from the 360 =263
divide 263 to get the angels for P and R
S= 48.5
Q=48.5
R=131.5
P=131.5