The answer is 2 hours u only subtract 3 hours from 5 hours. at least that what i say im not sure if im correct
Answer:
A.
Step-by-step explanation:
Y=mx+c
c=intercept =-2
Gradient(m) =2/1=+2
Y=2x-2
Answer:
Lời giải có ở trong ảnh bạn nhé
Answer:
A=-28 B=-48 C=45
Step-by-step explanation:
-(7x4)= -28 so your first step is multiply the positive and the negative equals a negative (+)x(-)=(-) second is to multiply the numbers
-(6)x8= -28 same steps for the first
(-5)x(9) convert it to 5x9=45
Answer:
x²+x-56
Step-by-step explanation:
If x=-8 and x=7 are the roots then x+8 and x-7 are the factors. Find the product of the factors to obtain the polynomial.
(x+8)(x-7)
x²-7x+8x-56
x²+x-56
Similarly,we could use Vieta's formula
x²-(sum of roots)x+(product of roots)
x²-(-8+7)x+(-8×7)
x²-(-1)x+(-56)
x²+x-56
