Explanation: Remember that dividing by a fraction is the same thing as <em>multiplying by the reciprocal</em> of that fraction or that fraction flipped.

Also, think of the 15 in this problem as 15/1.

So we can rewrite 15/1 ÷ 1/3 as 15/1 · 3/1.

Multiplying across the numerators and the denominators,

we find that our answer is 45/1 or just 45.

8 0

3 years ago

Maddy reads three-fifth of 75 pages of his lesson. How many more pages does he need to complete the lesson?

MariettaO [177]

Answer:

30 more pages

Step-by-step explanation:

1-3/5 =2/5

We do this because we are finding the amount left, which is the remaining fraction left, or 2/5

Multiply 75 by 2/5

150/5 = 30

3 0

3 years ago

A polygon has the following coordinates: A(6,-7), B(1,-7), C(1,-4), D(3,-2), E(7,-2), F(7,-4). Find the length of EF.

ICE Princess25 [194]

Answer:

The length of segment EF is 2 units

Step-by-step explanation:

we know that

The formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

we have

$E(7,-2), F(7,-4)$

substitute in the formula

$EF=\sqrt{(-4+2)^{2}+(7-7)^{2}}$

$EF=\sqrt{(-2)^{2}+(0)^{2}}$

$EF=\sqrt{4}\ units$

$EF=2\ units$

7 0

3 years ago