Answer:
(x, y, z) = (-2, 5, 1) solve the equation by using substitution as it is easier.
Answer:
63.5
Step-by-step explanation:
9.3(3)+8.9(4) = 63.5
substitute the values (s and t) with the given numbers (3 and 4.)
5x(x+4)
Step by step
5x^2 = 5x(x) because it’s the largest you can divide by
20x =4 because 5x times by 4 = 20x
Which means 5x^2+20x = 5x^2+20x= 5x(x+4)
y=2X-5 and 4X-Y=7
Putting the value of Y in 2nd equation:
4x-2x+5=7
2x=7-5
2x=2
OR,x=2/2=1
putting the value of x in equation 1:
y=2x-5
y=2*1-5
y=2-5
y=-3
Answer:
313.9
Step-by-step explanation:
running around the field is 100+100+145+145 = 490
across the field:
(100)^2 + (145)^2 = c^2
10000+21025 = c^2
c=176.1
490 - 176.1 = 313.9
