Melissa is represented by variable m.
Josh is represented by variable j.
Chau is represented by variable c.
m+j+c= 148
c=4m
j=m+10
Substitute for c and j for the first equation.
m+(m+10)+4m=148
6m+10=148
6m=138
m=23
Plug the known m value in
j=23+10
j=33
c=4(23)
c=92
Final answer: Melissa=23 messages, Josh=33 messages, Chau=92 messages
The answer is C: 3x + 30 = 11x.
Hope my answer helped!! It would really help me if you gave me Brainliest Answer!!
It can make the shape bigger or smaller
<h3>
Answer: 36.9 degrees</h3>
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Work Shown:
I'm assuming your teacher meant to say the ramp is 7 meters long and the ramp rises up 4.2 meters. It doesn't make sense the way they phrased it initially since the ramp must be the longest part (it is the hypotenuse of the right triangle).
See diagram below.
The angle of elevation is the angle made between the ramp and the ground. It's the angle amount the ramp tilts upward.
sin(angle) = opposite/hypotenuse
sin(theta) = 4.2/7
sin(theta) = 0.6
theta = arcsin(0.6)
theta = 36.869897645844
theta = 36.9
Note: inverse sine or 
is the same as arcsine. Make sure your calculator is in degree mode.
Answer:
Okay so our number in this example is going to be 23 because it is my favorite.
So you start of by saying okay
23+0.1
and that would equal 23.1
and then you would think
23-0.1
and that would equal 22.9
and then you would do the same thing just move a place
so 23+0.001
and that would equal 23.001
and then you subtract it
so 23-0.001
and that would equal 22.999
hope this helped :)
