3 years ago

Pedro simplified 4/7 5/8 his work is shown below identify where he made his error

Mathematics

1 answer:

motikmotik3 years ago

6 0

4/7 cannot be simplified anymore. 5/8 can't be simplified either.

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The difference of the square of a number and 28 is equal to 3 times that number

Pepsi [2]

Answer:

- 4, 7

Step-by-step explanation:

Let the required number be x.

Therefore, according to the given condition:

${x}^{2} - 28 = 3x \\ {x}^{2} - 3x - 28 = 0 \\ {x}^{2} - 7x + 4x - 28 = 0 \\ x(x - 7) + 4(x - 7) = 0 \\ (x - 7)(x + 4) = 0 \\ x - 7 = 0 \: or \: x + 4 = 0 \\ x = 7 \: or \: x = - 4 \\$

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Pavlova-9 [17]

Answer:

Step-by-step explanation:

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ratelena [41]

Answer:

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Step-by-step explanation:

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3 years ago

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sergeinik [125]

The smallest number that they can all be divided by

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3 years ago

Rolls are being prepared to go to grocery stores. Divide 72 rolls into 2 groups so the ratio is 3 to 5.

tekilochka [14]

To do this, nice it to add 3 and 5, then divide 72 by the result of sum 3 and 5. Finally multiply it by 3 and by 5 to get the result.
Lets do this
3+5=8
72:8=9 - number of rolls in 1 "unit"
9*3=27 - first group
9*5=45 - second group

8 0

3 years ago