Two equivalent decimals for 2.50

1 answer:

5 0

2.5 is an equivalent decimal because you can add infinity zeros after the last number in a decimal and it will still be the same.

&

2.500 would be an equivalent decimal because you can add infinity zeros after the last number in a decimal and it will still be the same.

2.5, 2.500, 2.5000, 2.50000, etc..

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The selling price s , of an item is S equals C plus MC where C is the cost of the item and Emma is the percent markup based on c

Evgen [1.6K]

9514 1404 393

Answer:

M = (S -C)/C

Step-by-step explanation:

Starting with ...

S = C + MC

we want to solve for M.

S - C = MC . . . . subtract the term not containing M

(S -C)/C = M . . . . divide by the coefficient of M

Solved for M, the formula is ...

M = (S -C)/C

3 0

2 years ago

Eugene walked all the way to school at 3 mph then realized she forgot her math book (how could she?!), so she ran back at 7 mph.

Fynjy0 [20]

$\text{Answer: }1\frac{23}{40}\ miles\text{ far she live from school.}$

Explanation:

Since we have given that

Speed at which Eugene walked all the way to school = 3 mph

After realizing that she forgot her math book, she ran back

Speed at which Eugene walked back to her house = 7 mph

Let the distance between her house and her school be x

According to question,

$\frac{x}{3}+\frac{x}{7}=\frac{45}{60}\\\\\frac{7x+3x}{21}=\frac{3}{4}\\\\\frac{10x}{21}=\frac{3}{4}\\\\x=\frac{3\times 63}{4\times 10}=\frac{63}{40}=1\frac{23}{40}\ miles.$