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dusya [7]
3 years ago
13

How to divide fractions

Mathematics
2 answers:
lorasvet [3.4K]3 years ago
8 0
When dividing fractions, what you do, is turn it into multipcation. You use the multiplicitve inverse (reciprocal) to multiply.

For example:

3/7÷ 5/8 = 3/7×8/5
Oxana [17]3 years ago
5 0

Dividing by a fraction is the same as multiplying by its reciprocal. In other words, we can change the division sign to multiplication and flip the second fraction. Let's try an example.

\frac{1}{2} ÷ \frac{5}{9} can be rewritten as \frac{1}{2} × \frac{9}{5}.

Now, we are simply multiplying fractions.

Multiply across the numerators and the denominators

\frac{1}{2} × \frac{9}{5} = \frac{9}{10}

Therefore, \frac{1}{2} ÷ \frac{5}{9} = \frac{9}{10}

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A dozen muffins costs $5. Large bottles
notka56 [123]

Answer: Option D) 3 x 5 + 4 x 2

Step-by-step explanation:

- Since a dozen muffins costs $5.

Buying 3 dozen muffins means (3 x $5)

- Since Large bottles of juice cost $2.

The cost of 4 large bottles of juice is (4 x $2)

Hence, the total cost is (3 x $5) + (4 x $2)

= $15 + $8

= $23

Now, you'll notice that "3 x 5 + 4 x 2" gives 23.

Thus, it is the only expression that could be used to find the total cost.

5 0
3 years ago
In the year 2005, a person bought a new car for $24500. For each consecutive year
Dafna1 [17]
$20090

because, in three years it would have depreciated by 18% (9%*3=18) so you would subtract 18% off of $24500
7 0
3 years ago
Read 2 more answers
I need help finding the slope, identifying the initial value and writing An equation for a linear function and finding the X ans
pishuonlain [190]

Answer/Step-by-step explanation:

✔️Slope (m) using the two points (2, 4.58) and (5, 4.28):

slope (m) = \frac{y_2 - y_1}{x_2 - x_1} = \frac{4.28 - 4.58}{5 - 2} = \frac{-0.3}{3} = -0.1

Slope (m) = -0.1

✔️Initial Value = y-intercept = b

To find b, substitute x = 2, y = 4.58, and m = -0.1 into y = mx + b.

(Note: y is P(t) and x is t).

Thus:

4.58 = (-0.1)(2) + b

4.58 = -0.2 + b

Add 0.2 to both sides

4.58 + 0.2 = b

4.78 = b

b = 4.78

Initial value = 4.78

✔️Equation for the linear function:

Substitute b = 4.78, and m = -0.1 into P(t) = mt + b

Thus the equation would be:

P(t) = -0.1t + 4.78

✔️The y-intercept = initial value = 4.78

✔️The x-intercept = the value of t when P(t) = 0.

To get this, substitute P(t) = 0 into P(t) = -0.1t + 4.78.

Thus:

0 = -0.1t + 4.78

Add 0.1t to each side

0.1t = 4.78

Divide both sides by 0.1

t = 47.8

x-intercept = 47.8

8 0
3 years ago
The perimeter of a parallelogram is 56 meters the width of the parallelogram is 8 meters less than its length find the length of
Dimas [21]

Answer:

length = 18 mt

Width = 10 mt

Step-by-step explanation:

Let the length of the field be x

width of the field be y

Hence

P=2(x+y)

P=56 (given)

56=2(x+y)

Dividing both sides by 2 we get

x+y=28   ---(A)

Also given that width of the parallelogram is 8 meters less than its length

Hence

y=x-8

or x-y=8   ---(B)

Adding A and B

2x=36

x=18

y=x-8

y=18-8=10

Hence length = 18 mt

Width = 10 mt

8 0
3 years ago
What is 3x+8 if x=8
Mazyrski [523]

Answer:

y=32

Step-by-step explanation:

y=3(8)+8

y=24+8

24+8=32

y=32

4 0
3 years ago
Read 2 more answers
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