Yes you do need to regroup it would be 4
What are you trying to solve for?
The particle will reach 50 km/hr when x = 32.25 hours
Step-by-step explanation:
A physicist working in a large laboratory has found that light particles
traveling in a particle accelerator increase velocity in a manner that
can be described by the linear function - 4 x + 3 y = 21, where
- x is the time in hours
- y is the velocity in kilometer per hour
We need to find when a certain particle will reach 50 km/h
∵ - 4 x + 3 y = 21 is a linear function
∵ x represents the time (number of hours)
∵ y represents the velocity in km/h
∵ The velocity of a particle will reach 50 km/h
- Substitute y by 50 in the function above
∴ - 4 x + 3(50) = 21
∴ - 4 x + 150 = 21
- Subtract 150 from both sides
∴ - 4 x = -129
- Divide both sides by -4
∴ x = 32.25 hours
The particle will reach 50 km/hr when x = 32.25 hours
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Answer:
w>11, w>10, w<15, w<11.
Step-by-step explanation:
w is the weight of Diego's dog. The weight must be more than 10 (w>10) but less than 15(w<15), so the inequality must be 1010 and w<15 then the following inequalities should be true:
w>11
(The weight can be more than 11 kilograms as long as it does not go past 15 kilograms.)
w>10
(This is one of the original inequalities. Weight has to be more than 10.)
w<15
(This is also one of the original inequalities. Weight has to be less than 15.)
w<11
(The weight can be less than 11 as long as it is more than 10.)
Not true:
w>15
(The weight cannot be more than 15 as stated in the question.)
w<10
(The weight cannot be less than 10 as stated in the question.)
My guess would be Jupiter But I'm not sure. Its certainly massive!!
