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Cloud [144]
3 years ago
14

At a flower shop, 4 flowers cost $10. Mrs. Watson usually buys 12 flowers. During a sale, there is a 20% discount on every flowe

r. How many flowers can Mrs. Watson buy during the sale if she spends the same amount of money that usually does?
Mathematics
2 answers:
Cloud [144]3 years ago
4 0
60 flowers. She usually buys 12 flowers, and there is a 20% discount, so 20%=1/5, so 12*5=60
guajiro [1.7K]3 years ago
3 0
Make a proportion to find the cost for 12 flowers based on the price for 4 flowers. 
4/10=12/x
Cross multiply and you get 4x=120 Divide 4 on both sides of the equation. 
X is $30.
Then, you find the unit price of 1 flower by dividing 10 by 4. Each flower cost $2.50. 
Convert 20% to decimal which is 0.2.
Multiply 0.2 by 2.5 and you get 0.5. Subtract 0.5 from 2.5 to get 2. 
Write an equation using the information: $2 for each flower and you only have $30 to spend. 
The equation is 2x=30. Divide 2 on both sides and you get x=15 flowers
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A sphere and a cylinder have the same radius and height. The volume of the cylinder is . Amie found the volume of the sphere. He
dezoksy [38]

Amie's error while measuring the volume of a sphere is that <u>Amie should have multiplied 54 by 2/3</u>. Thus, the <u>first option</u> is the right choice.

In the question, we are given that a sphere and a cylinder have the same radius and height.

We assume the radius of the sphere to be r, and its height to be h.

Now, the height of a sphere is its diameter, which is twice the radius.

Thus, the height of the sphere, h = 2r

Given that the sphere and the cylinder have the same radius and height, the radius of the cylinder is r, and its height is 2r.

The volume of a sphere is given by the formula, V = (4/3)πr³, where V is its volume, and r is its radius.

Thus, the volume of the given sphere using the formula is (4/3)πr³.

The volume of a cylinder is given by the formula, V = πr²h, where V is its volume, r is its radius, and h is its height.

Thus, the volume of the given cylinder using the formula is πr²(2r) = 2πr³.

Now, to compare the two volumes we take their ratios, as

Volume of the sphere/Volume of the cylinder

= {(4/3)πr³}/{2πr³}

= 2/3.

Thus, the volume of the sphere/the volume of the cylinder = 2/3,

or, the volume of the sphere = (2/3)*the volume of the cylinder.

Given the volume of the cylinder to be 54 m³, Amie should have multiplied 54 by 2/3 instead of adding the two.

Thus, Amie's error while measuring the volume of a sphere is that <u>Amie should have multiplied 54 by 2/3</u>. Thus, the <u>first option</u> is the right choice.

Learn more about volumes at

brainly.com/question/12398192

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For the complete question, refer to the attachment.

6 0
2 years ago
What is the difference between rational and irrational numbers?
Olenka [21]
Rational numbers can be written as a fraction. They can be integers, whole numbers, natural numbers, repeating decimals, terminating decimals and obviously fractions. Irrational numbers can not be written as a fraction. They are usually non terminating non repeating decimals (like Pi).
3 0
3 years ago
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Kay buys 12 pounds of apples each pound costs 3$ if she gives the cashier two 20$ bills how much change should she receive
ASHA 777 [7]
12lb of Apples

Every Pound is 3$

So, 12lb*3$

12*3 = 36$

Two 20$ bills is.... 20*2 = 40$

40$ - 36$ = 4$

So, she will receive $4.00 in change. 
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7 0
3 years ago
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PLEASE HELP QUICK A prism has 2 congruent hexagonal bases like the one shown. Each hexagon is made from 2 congruent isosceles tr
Mademuasel [1]
<h3>Answer: C) 6 units</h3>

==========================================================

Explanation:

Let's find the area of the hexagon. It's composed of two identical (aka congruent) trapezoids.

Each trapezoid has two parallel bases of 4+4 = 8 and 5 units. The height is 3. The area of one trapezoid is

area = height(base1+base2)/2

area = 3*(8+5)/2

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which doubles to 2*19.5 = 39 to represent the area of the entire hexagon

--------------------------------

The volume of any prism is found through this formula

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We just found the area of the base to be 39. The height is unknown, so we'll call it h. The volume is given to be 234.

We end up with this equation

234 = 39h

which solves to h = 6 after dividing both sides by 39. This prism has a height of 6 units.

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3 years ago
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Total = Principal * (1 + rate)^years
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