Answer:
Grater than ( < ), and less than ( > ).
Answer:
r = i + j + (-2/3)(3i - j)
Step-by-step explanation:
Vector Equation of a line - r = a + kb ; where r is the resultant vector of adding vector a and vector b and k is a constant
if a = i + j ; b = t(3i - j) and r = -i +s(j)
for this to be true all the vector components must be equal
summing i 's
i + 3ti = -i; then t = -2/3
j - tj = sj; then s = 1-t; substitue t; s=1+2/3 = 5/3
so r = i + j + (-2/3)(3i - j) which will symplify to -i + 5/3j
Answer:
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Step-by-step explanation:
Emily can rake 1/5 of the lawn in an hr.
Andrew can rake 1/8 of the lawn in an hr.
Together, they rake 1 yardful. x represents time in hours.
(1/5)x+ (1/8)x= 1
Multiply all values by 40
8x+5x=40
13x=40
x= 40/13
x=3.0769...
Final answer: 3 hours
250$÷5=50
each people 50
3 sister = 150
2 nephews = 100
spend 10$ to each sister
100$N - 30$spend =70$N
3S= (150$ + 30$ )
= 180$÷3
=60$
2N=70$÷3 =23.33$
