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3 years ago

Can an expert help me with this. thanx

Mathematics

1 answer:

pogonyaev3 years ago

7 0

141 perimeter

I cannot help with the area tho.

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Liam had 250. Then, he and his classmates bought a present for their teacher, evenly splitting the 120 cost among the e of them.

vodomira [7]

The number of children who contribute toward the present is represented as $'e'$

The cost of the present is 120 and the children split the cost evenly between them. The expression for this is $\frac{120}{e}$

Liam has to give $\frac{120}{e}$ towards the present

Liam has 250 with him

If he gives $\frac{120}{e}$ away, then the money he has left is:

$250- \frac{120}{e}$

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Explain why a prime number cannot be a square number

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All square numbers have an odd numberof factors. A prime number by definition has exactly 2 factors - 1 and itself.

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3 years ago

A school group is helping plant a new city garden. Today they used 12 1/2 pounds of potting soil and planted 2/5 of the garden.

Len [333]

Answer:

$18\frac{3}{4}$ pounds.

Step-by-step explanation:

Let x be the total amount of potting soil needed to complete the planting in new garden.

We are told that a school group is helping plant a new city garden. Today they used 12 1/2 pounds of potting soil and planted 2/5 of the garden. This means 2/5 of x equals to 12 1/2.

$\frac{2}{5} x=12\frac{1}{2}$

$\frac{2}{5} x=\frac{25}{2}$

$x=\frac{25}{2}\times\frac{5}{2}$

$x=\frac{125}{4}$

To find the amount of soil needed for the next of planting we will subtract the amount of potting soil used on the first day $(\frac{25}{2})$ from amount of total potting soil $(\frac{125}{4})$ .

$\text{Amount of potting soil needed for second day}=\frac{125}{4}-\frac{25}{2}$

$\text{Amount of potting soil needed for second day}=\frac{125}{4}-\frac{25\times 2}{2\times2}$

$\text{Amount of potting soil needed for second day}=\frac{125}{4}-\frac{50}{4}$

$\text{Amount of potting soil needed for second day}=\frac{75}{4}$

$\text{Amount of potting soil needed for second day}=\frac{75}{4}=18\frac{3}{4}$

Therefore, the group will need $18\frac{3}{4}$ pounds of potting soil to finish their work.

7 0

3 years ago

Freepointsmmmmmmmmmmmmmmmm

posledela

Step-by-step explanation:

ohh my dear thanks for the point

have a great day ❣✌❣✌❣✌❣✌

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