Step-by-step explanation:
1) c
2) c
use the value of slope and the coordinates and substitute in the equation of line.
We must look at this question in steps
The first half of the journey is travelled at 40 km/h
Half of 100km is 50 km
Using the formula
Distance = Speed x Time
Speed = Distance / Time
Time = Distance / Speed
We can work out the time:
50km / 40km/h = 1.25 hours
Next we look at the second half of the journey
50km at 80km/h
50km / 80km/h = 0.625 hours
Add together both times to work out how long the entire journey took
1.25 + 0.625 = 1.875 hours
Using the Speed formula from before
Speed = 100km / 1.875 =
53 1/3 km/h or 53.3 recurring km/h
Answer:
y=-2x+11
Step-by-step explanation:
equation of a line
y-b=m(x-a)
m=-2
a=3
b=5
sub into the equation
y-5= -2(x-3) multiply out the brackets and a negative multiply by negative equals positive
y-5=-2x+6
y=-2x+11
or
2x+y-11=0
Answer:
5
Step-by-step explanation:
number of chocolate chip cookies = 36 × ¼ = 9
number of oatmeal cookies = 36 × ⅓ = 12
36 - 9 - 12 = 15
Alex made 15 peanut butter cookies.
Answer:
1000 cm²
Step-by-step explanation:
Given:
- Length = 10 cm
- Width = 12.5 cm
- Height = 8 cm
<u>Formula:</u>
Substitute the length, width, and the height of the prism to determine the volume of the prism.
Simplify the right hand side of the equation, as needed;
Therefore, the volume of the prism is 1000 cm².
