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lukranit [14]
3 years ago
10

Will give Brainliest if you get it right

Mathematics
1 answer:
fenix001 [56]3 years ago
5 0

Answer:

10.63

Step-by-step explanation:

The distance between two points is sqrt((difference between y-values)^2 + (difference between x-values)^2) -->

sqrt(8^2 + 7^2) =

sqrt(64 + 49) =

sqrt( 113) =

10.630145 -->

10.63

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Two kids are roller skating. Amy, with a mass of 55 kg, is traveling forward at 3 m/s. Jenny, who
alekssr [168]

Answer:

They traveling at 0.37\ m/s in backward direction.

Step-by-step explanation:

Given mass of Ammy m_1=55kg

and velocity is forward at v_1=3m/s

Also, mass of Jenny m_2=40kg

Who is travelling in opposite direction v_2=-5m/s

Let velocity in forward direction is positive and velocity in backward direction is negative.

Also, velocity after crash is v

As they crashed into each other and they moved as one mass. We can apply principle of conservation of momentum.

Conservation of momentum says momentum before collision should equal to momentum after collision.

m_1v_1+m_2v_2=(m_1+m_2)v

(55\times3)+(40\times(-5))=(55+40)v\\\\165-200=95v\\\\-35=95v\\\\v=\frac{-35}{95}=-0.368m/s

So, velocity after collision v≅-0.37m/s is in opposite direction. That is the direction of Jenny.

6 0
2 years ago
Help plsssssss!!! i have a timer on me
Bingel [31]

Answer:

the first one

/10/ is the absolute number so it's supposed to represent 10

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Simplify<br> 1203<br> 52<br> 4 100<br> 551<br> 044<br> 5<br> 421<br> 50<br> 0<br> 127<br> 152
s2008m [1.1K]

Answer:

The answer is C

Step-by-step explanation:

I pick that answer because you have divide

8 0
3 years ago
A cement pathway of uniform width is to be poured around a rectangular swimming
Nookie1986 [14]

Answer:

A (2) =4*2 +882

Step-by-step explanation:

8 0
3 years ago
Calculate the mean and variance of the sample data set provided below. show and explain your steps. round to the nearest tenth.
eimsori [14]
Mean = (14 + 16 + 7 + 9 + 11 + 13 + 8 + 10) ÷ 8 = 11

Variance = 
[ (14-11)²+(16-11)²+(7-11)²+(9-11)²+(11-11)²+(13-11)²+(8-11)²+(10-11)² ]/7 = 9.71

Answer: 9.71
6 0
3 years ago
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