So to consecutive odd intger means
x is the first odd integer and
x+2 is the second odd integer
we can tell that x will be negative
x+x+2=-28
2x+2=-28
subtract 2 from both sides
2x=-30
divide both sides by 2
x=-15
x+2=-15+2=-13
-13-15=-28
the numbers are -13 and -15
Answer:
v=52.5
Step-by-step explanation:
the angle is right so both of the sides should equal 90 degrees
90-(minus)37.5 is 52.5
Answer:
6.11km/hr
Step-by-step explanation:
Let the speed that Kelli swims be represented by Y
Speed of the river = 5km/hr
Distance = Speed × Time
Kelli swam upstream for some distance in one hour
Swimming upstream takes a negative sign, hence:
1 hour ×( Y - 5) = Distance
Distance = Y - 5
She then swam downstream the same river for the same distance in only 6 minutes
Downstream takes a positive sign
Converting 6 minutes to hour =
60 minutes = 1 hour
6 minutes =
Cross Multiply
6/60 = 1/10 hour
Hence, Distance =
1/10 × (Y + 5)
= Y/10 + 1/2
Equating both equations we have:
Y - 5 = Y/10 + 1/2
Collect like terms
Y - Y/10 = 5 + 1/2
9Y/10 = 5 1/2
9Y/ 10 = 11/2
Cross Multiply
9Y × 2 = 10 × 11
18Y = 110
Y = 110/18
Y = 6.1111111111 km/hr
Therefore, Kelli's can swim as fast as 6.11km/hr still in the water.