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Tomtit [17]
3 years ago
11

What is 0.2(x+2)-2=0.4

Mathematics
1 answer:
Eva8 [605]3 years ago
7 0
0.2(x+2) -2= 0.4
⇒ 0.2(x+2)= 0.4+ 2
⇒ 0.2(x+2)= 2.4
⇒ x+2= 2.4/ 0.2
⇒ x+2= 12
⇒ x= 12-2
⇒ x= 10

Final answer: x=10~
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Urgent please!!! I really don’t understand it, tysm to anyone who can answer thissss :))))
Tomtit [17]

Given:

The frequency distribution table.

To find:

The mean average score on a test.

Solution:

The frequency distribution table is

Marks (x_i)                   Frequency(f_i)                  f_ix_i

     x                                     a                               xa

     y                                     b                               yb

     z                                     c                               zc

  Sum                              a+b+c                          xa+yb+zc

Now, the mean average score on the test is

Mean=\dfrac{\sum f_ix_i}{\sum f_i}

Mean=\dfrac{xa+yb+zc}{a+b+c}

Therefore, the mean average score on the test is \dfrac{xa+yb+zc}{a+b+c}.

3 0
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help help help\help help help\help help help\help help help\help help help\help help help\help help help\
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Answer:

D

Step-by-step explanation:

Subtract 60 from 80 to get 20, and divide 20 by 80 to get 1/4, which can be converted to 25%.

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The perimeter of a rectangular garden is 52 feet the length of the garden is 4 less than twice the width what is the widththe
GaryK [48]
W= Width 
L= Length

2L+2w=52
2W-4=L
Plug in L into the first equation
2(2W-4)+2w=52
4w-8+2w=52
6W=60
W=10 feet
Plug that into the second equation
2(10)-4=L
L=16
4 0
3 years ago
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