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Nikitich [7]
2 years ago
9

Nesecito ayuda con esta operación ( -1/5 +2/5) +4/7

Mathematics
2 answers:
Elina [12.6K]2 years ago
6 0
No se la respuesta lo siento
jasenka [17]2 years ago
3 0

Answer:

27 /35

Step-by-step explanation:

Para sumar fracciones, busque el LCD y luego combinar.

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A pack of 9 toilet rolls costs £4.23
OleMash [197]
 a)  9 toilet rolls cost $ 4.23
       1 toilet roll costs  $ x

          9x = 4.23 * 1
           x= 4.23 / 9
            x = 0.47
So in first case one toilet roll costs $ 0.47.

b) 4 toilet rolls cost $1.96
    1 toilet roll costs  $ x
     
    4x = 1.96 * 1
     x = 1.96 / 4
     x = 0.49
So in second case one toilet roll costs $ 0.49.

0.47 < 0.49
The toilet roll in first case is cheaper than the toilet roll in second case.

Hope this heps!


8 0
3 years ago
Assume that two figures on a flat surface, A and B, are similar.
lawyer [7]
A.     ratio of areas = 2^2 /5^2 = 4/25

B    14^2 : 1 = 196:1

C.  ratio of perimeters would be  sqrt81 = 9 times
5 0
3 years ago
Between the time Iko woke up and lunchtime, the temperature rose by 11°. Then by the time he went to bed, the temperature droppe
Tanzania [10]

Answer:             -3 degrees

Step-by-step explanation:

Lets say that the original temperature was "x."

The temperature rose by 11 degrees so it is now at 11+x.

Then the temperature fell by 14 degrees so you subtract. 11+x-14

11-14= -3 so you subtract 3 degrees from the original temperature and there fore the relative temperature is -3

I hope this helps!!!

4 0
3 years ago
Identify the terms,like terms,coefficient and constants
BartSMP [9]
Terms: -4j, -2, -5j, 6
Like Terms: -4j and -5j, -2 and 6
Coefficients: -4, -5
Constants: -2, 6
6 0
3 years ago
What's 0.875 as a fraction in simplest form
zhenek [66]
0.875=\dfrac{875}{1000}=\dfrac{875:25}{1000:25}=\dfrac{35:5}{40:5}=\boxed{\frac{7}{8}}
8 0
2 years ago
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