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Natalka [10]
3 years ago
7

Help me plz i really cant work it out

Mathematics
2 answers:
klemol [59]3 years ago
8 0

Answer:

11 m/s

Step-by-step explanation:

Using v = u + at

where

v = final velocity which we want to find out

u = 3

a = 2

t = 4

v=u+at

v = 3 + 2×4

v =11 m/s

Oxana [17]3 years ago
8 0
So v=?
The starting velocity u, and u=3m/s
The acceleration a is 2m/s^2
And it accelerates for time t=4s
So if we plug it all into the equation
v=(3m/s)+(2m/s^2)(4s)
v= (3m/s)+(8m/s)
v= 11 m/s
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Answer:

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Step-by-step explanation:

Given;

2 \times  \frac{1}{7}  -  1\frac{2}{5}

The above expression can be simplified as follows;

2 \times  \frac{1}{7}  -  1\frac{2}{5} \\\\=\frac{2}{7} - \frac{7}{5} \\\\= l.c.m \ of \ 7 \ and \ 5 \ is \ 35\\\\= \frac{5(2) - 7(7)}{35} \\\\= \frac{10 - 49}{35} \\\\= -\frac{39}{35} \\\\= - 1\frac{4}{35}

Therefore, the simplest form of the given expression is -1\frac{4}{35}

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Answer:

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