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Liono4ka [1.6K]
3 years ago
6

The regular price of a basketball is $25.During a recent sale, it was marked down by $7. Use a proportion to find the percent di

scount.
Mathematics
2 answers:
nikklg [1K]3 years ago
8 0
25-7=18
18/25=x/100
the scale factor is 4
multiply 18*4
72%
malfutka [58]3 years ago
5 0
The equation is part/whole = percent/100. Percent is unknown so it will be a variable, and it was marked down by 7 dollars so subtract : 25-7=18 now let's see our equation : 18/25 = x/100 Now solve : make sure 18/25 is simplified. (It all ready is) Now trade off : 18•100=25•x=1,800=25x (Divide by 25 on both sides and get) : 72=x. It was 72% off. Hoped I helped!
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A solid right pyramid has a square base. The length of the
Wittaler [7]

Answer:

The volume of the pyramid is 16 cm³.

Step-by-step explanation:

The volume of squared-base pyramid is given by the formula:

V=A\times \frac{h}{3}

Here,

V = volume of the squared-base pyramid

A = area of the square base

<em>h</em> = height of the pyramid.

The information provided is:

<em>a</em> = side of square = 4 cm

<em>h</em> = 3 cm

Compute the area of the square base as follows:

A=a^{2}\\=4^{2}\\=16\ \text{cm}^{2}

Compute the volume of squared-base pyramid as follows:

V=A\times \frac{h}{3}

   =16\times \frac{3}{3}\\\\=16

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7 0
3 years ago
Does the bathroom have enough water and shampoo for 888 long-haired members and 777 short-haired members?
Dovator [93]

Complete question :

Members of the swim team want to wash their hair. The bathroom has less than 5600 liters of water and at most 2.5 liters of shampoo. 70L+ 60S < 5600 represents the number of long-haired members L and short-haired members S who can wash their hair with less than 5600 liters of water. 0.02L + 0.01S < or equal to 2.5 represents the number of long-haired members and short-haired members who can wash their hair with at most 2.5 liters of shampoo. Does the bathroom have enough water and shampoo for 8 long-haired members and 7 short -haired members?

Answer:

Yes , there is enough water and shampoo

Step-by-step explanation:

Given that:

Number of long and short hair member who can wash their hair with less than 5600 litres of water.

70L+ 60S < 5600

Number of long and short hair member who can wash their hair with at most 2.5 litres of shampoo

0.02L + 0.01S ≤ 2.5

To check if bathroom has enough water and shampoo for 8 long haired and 7 short haired members.

Water check:

70L+ 60S < 5600

L = 8 ; S = 7

70(8) + 60(7) < 5600

560 + 420 < 5600

980 < 5600

Inequality constraint is satisfied ; There is enough water.

Shampoo check:

0.02L + 0.01S ≤ 2.5

L = 8 ; S = 7

0.02(8) + 0.01(7) ≤ 2.5

0.16 + 0.07 ≤ 2.5

0.23 ≤ 2.5

Inequality constraint is satisfied ; There is enough shampoo

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Wewaii [24]

Step-by-step explanation:

There's no value for x. After solving, there was no value for x. therefore x=0

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Answer:

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Step-by-step explanation:

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