Ask question

Ask question

All categories

3 years ago

7

ming- LI spent $15 at the movies. She then earned $30 babysitting. She spent $12 at the bookstore. She ow has $18 left. How much

money did Ming-Li have to begin with?

1 answer:

valentina_108 [34]3 years ago

8 0

Answer:

$29

Step-by-step explanation:

You might be interested in

To make cherry turnovers, a cook cuts the dough into triangles with a base of 6 inches and a height of 3 inches. How many turnov

Inessa [10]

Answer:

<u>24 turnovers</u> can be cut from the rectangular piece of dough.

Step-by-step explanation:

Given:

A rectangular piece of dough is 12 inches wide and 18 inches long.

To make cherry turnovers, a cook cuts the dough into triangles with a base of 6 inches and a height of 3 inches.

Now, to find the number of turnovers can be cut from the dough.

So, we find the area of the triangle the cook cuts from the dough by putting formula:

<em>Base (b) = 6 inches.</em>

<em>Height (h) = 3 inches.</em>

$Area=\frac{hb}{2} \\\\Area=\frac{h\times b}{2} \\\\Area=\frac{3\times 6}{2} \\\\Area=\frac{18}{2} \\\\Area=9\ inches^2.$

<u><em>Thus, the area of the triangle cut from the dough is 9 inches².</em></u>

Now, to get the area of rectangular piece of dough by putting formula:

<em>Length = 18 inches.</em>

<em>Width = 12 inches.</em>

$Area=length\times width\\\\Area=18\times 12\\\\Area=216\ inches^2.$

<u><em>Hence, the area of the rectangular dough is 216 inches².</em></u>

Now, to get the number of turnovers can be cut from the rectangular piece of dough we divide the area of the rectangular dough by the area of the triangle cut from the dough:

$\frac{216}{9} \\\\=24\ turnovers.$

Therefore, 24 turnovers can be cut from the rectangular piece of dough.

8 0

4 years ago

ol McDonald would like to build a pin for his favorite pig horse and cow he needs to enclose a rectangular plot of land into thr

garri49 [273]

The area of the pen is the products of its dimensions

The dimension of the pen is 300 by 120 feet
The maximum area of the pen is 36000 square feet.

Let the dimension of the fence be x by y.

So, we have:

<em /> $\mathbf{2x + 5y = 1200}$ <em> --- perimeter</em>

<em /> $\mathbf{Area =xy}$ <em> -- area</em>

<em />

Subtract 5y from both sides of $\mathbf{2x + 5y = 1200}$

$\mathbf{2x = 1200 - 5y}$

Divide both sides by 2

$\mathbf{x = \frac{1200 - 5y}{2}}$

Substitute $\mathbf{x = \frac{1200 - 5y}{2}}$ in $\mathbf{Area =xy}$

$\mathbf{Area = \frac{1200 - 5y}{2} \times y}$

$\mathbf{Area = \frac{1200y - 5y^2}{2}}$

Split

$\mathbf{Area = 600y - \frac{5}{2}y^2}$

Differentiate

$\mathbf{A' = 600 -5y}$

Set to 0

$\mathbf{600 -5y = 0}$

Add 5y to both sides

$\mathbf{5y = 600}$

Divide both sides by 5

$\mathbf{y = 120}$

Substitute $\mathbf{y = 120}$ in $\mathbf{x = \frac{1200 - 5y}{2}}$

$\mathbf{x = \frac{1200 - 5 \times 120}{2}}$

$\mathbf{x = \frac{1200 - 600}{2}}$

$\mathbf{x = \frac{600}{2}}$

$\mathbf{x = 300}$

Recall that:

$\mathbf{Area =xy}$

So, we have:

$\mathbf{Area = 300 \times 120}$

$\mathbf{Area = 36000}$

Hence, the maximum area of the pen is 36000 square feet.

Read more about maximum areas at:

brainly.com/question/11906003

7 0

3 years ago

Write a related subtraction fact 7+6=13

Klio2033 [76]

7 + 6 = 13

13 - 6 = 7 or 13 - 7 = 6

7 0

3 years ago

Bloomington Nail Salon is having a special this month on services. Over the weekend, they performed 49 manicures and 16 pedicure

marshall27 [118]

Answer: The salon charges $16 for a manicure and $25 for a pedicure.

Step-by-step explanation:

Let x represent the amount charged by the salon for a manicure.

Let y represent the amount charged by the salon for a pedicure.

Over the weekend, they performed 49 manicures and 16 pedicures, bringing in a total of $1,184 in receipts. It means that

49x + 16y = 1184- - - - - - - - - - 1

So far this week, they have administered 31 manicures and 33 pedicures, with receipts totalling $1,321. It means that

31x + 33y = 1321- - - - - - - - - - 2

Multiplying equation 1 by 31 and equation 2 by 49, it becomes

1519x + 496y = 36704

1519x + 1617y = 64729

Subtracting, it becomes

- 1121y = - 28025

y = - 28025/- 1121

y = $25

Substituting y = 25 into equation 1, it becomes

49x + 16 × 25 = 1184

49x + 400 = 1184

49x = 1184 - 400

49x = 784

x = 784/49

x = $16

5 0

4 years ago

86 is 45% of what number

zloy xaker [14]

<span>a. 86 = 0.45n
</span>
Is Your Answer Hope This Helps

4 0

3 years ago

Read 2 more answers