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miss Akunina [59]
3 years ago
12

Can someone help me solve this ?! Will mark brainliest

Mathematics
2 answers:
Elenna [48]3 years ago
7 0
Roberto has twice the mass his sister Mary has but runs at the same velocity as Mary. Will his kinetic energy be twice as much?

(Mary has a mass of 40 kg and sprints at 1 m/s)


Can someone help me with this (sorry I don’t have enough point for a question and no one has answered this and I’m confused)
Natalija [7]3 years ago
5 0

Answer:

The second, the third, and the last one

Step-by-step explanation:

The second is correct because we just multiply by 6 on both sides, thus not changing the value of the x

The third is correct because we just distribute the 6 into the parenthesis, and multiply the equal side by 6, thus just simplifying the expression, not changing it.

The last is correct because you just subtract 4 from both sides, and since done to both sides, doesn't change the equation.

Hope i helped you :)

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Answer:

Ming rented the bike for 8 hours. Hope this helps!

5 0
3 years ago
A rock is thrown upward at a speed of 69 mph when the rock reaches its peak how fast is it going and what is the magnitude and a
aleksandrvk [35]
At it's peak the rock is going 0mph the acceleration is .0000038 m/s^2 if on earth
6 0
3 years ago
Write the equation of a line
patriot [66]
Y=6x+(1/2)

y=mx+b

m is slope
b is y-intercept so you just plug in the values
4 0
3 years ago
"isotherms are drawn at regular intervals; on this map, the interval between successive isotherms is ______ fahrenheit degrees."
Marizza181 [45]

An isotherm on a geographic map is a type of equal temperature at a given date or time. And if we talk about thermodynamics, it is a curve on a Pressure – Volume diagram at a constant temperature.

 

Basing from the graph, we can actually see that the interval is:

 

10 <span>Fahrenheit degrees</span>

6 0
3 years ago
Find the real number X and y such that 3x + 2iy ix+ 5y = 7+5i​
OLga [1]

Answer:

y=8 and x =-11

Step-by-step explanation:

kinda confused by the setting of the question

but i used this form ; 3x + 2iy+ xi + 5y = 7 + 5i instead of 3x+2iy xi+5y =7+5i

Then ;

you compare

3x + 5y =7....... equation 1

2iy + xi = 5i. ( cancel out i)

u get ; 2y + x =5 .......equation2

solve simultaneously by substitution method

giving u y=8

put value of y into equation 2 and get x=-11

hope that helps

6 0
3 years ago
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