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3 years ago

8

Ms. Perkins has a bag of candy with 30 pieces. She gave away 1/5 of the pieces to her students. How many pieces does she have le

ft in her bag?

1 answer:

fgiga [73]3 years ago

6 0

Ms. Perkins will have 24 pieces of candy left, because 30 ÷ 5 = 6. So there for 1/5 is equal to 6 pieces of candy.

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If 1900 square centimeters of material are available to make a box with a square base and an open top, find the largest possible

Evgen [1.6K]

Answer:

Volume = $7969$ cubic centimeter

Step-by-step explanation:

Let the length of each side of the base of the box be A and the height of the box be H.

Area of material required to make the box is equal to is $A^2 + 4*A*H.$

$A^2 + 4*A*H = 1900$

Rearranging the above equation, we get -

$`H = \frac{(1900 - A^2)}{(4*A)}$

Volume of box is equal to product of base area of box and the height of the box -

$V = A*A* H$

Substituting the given area we get -

$\frac{A^2*(1900 - A^2)}{4A} = \frac{(1900*A - A^3)}{4}$

For maximum volume

$\frac{dV}{dA} =0$

$\frac{ 1900}{4} - \frac{3*A^2}{4} = 0$

$A^2 = \frac{1900}{3}$

Volume of the box

= $\frac{\frac{1900}{3}*(1900 - \frac{1900}{3}) }{4 * \sqrt{\frac{1900}{3} } }$

= $7969$ cubic centimeter

3 0

2 years ago

Oliver sewed a quilt 3 2/3 feet long and 2 1/4 feet wide. what is the area of her quilt?

Hunter-Best [27]

Answer:

8.25 feet

Step-by-step explanation:

3 2/3 times 2 1/4 equals 8.25

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2 years ago

Sandra wants to make gift baskets. She needs 1.3 pounds of flour to make cupcakes and 1.7 pounds of flour to make pies. About ho

Katarina [22]

Answer:

18 pounds of flour

Step-by-step explanation:

Add your wright of flout, 1.3+1.7, getting 3lbs. Then multiply 3 by 6 because thats the number of baskets. Getting 18lbs. of flour

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3 years ago

max2010maxim [7]

The correct answer is water

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3 years ago

A school has a new flag that must be flown at last 52 feet high The current flagpole is 14 m tall How many meters taller does th

ohaa [14]

To start with, convert 52 feet into metres
1 Feet= 0.3048
52 feet= ?
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The number of meters= 15.8496 metres

The school need to add a further 1.8496 metres

6 0

3 years ago