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3 years ago

8

Show an equation and a solution. How much pure antifreeze must be added to 12 L of a 40% solution to obtain a 60% solution. (Rem

ember that pure antifreeze is 100% = 1.)

1 answer:

erastova [34]3 years ago

5 0

6 litres because ...
12/40 = 1 ratio them x 60 for 60% which is 18 and since you have 12l already just do 18-12 = 6

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Stacy goes to the county fair with her friends. The total cost of ride tickets Is given by the equation c = 3.5t, where c is the

murzikaleks [220]

C = 3.5t....when t = 15
c = 3.5(15)
c = 52.50 <==

5 0

3 years ago

Fluffy, Spot and Skampy have a combined age in dog years of 91. Spot is 14 years younger than Fluffy. Skampy is 6 years older th

WITCHER [35]

Answer: fluffy = 33yrs

Spot = 19 yrs

Skampy = 39 yrs

Step-by-step explanation:

Let fluffy = x

Spot = y

Skampy =z

x + y + z = 91 -------1

x -14 =y ------2

z = x + 6 --------3

Put eqn 2 and 3 in eqn 1

x + x - 14 + x + 6 = 91

3x = 99

x = 33

y = 33-14= 19

z = 33+6 = 39

8 0

2 years ago

A person consuming 1600 calories a day and 92 grams of this is fat what would be the percentage of this would the division be 92

WITCHER [35]

Answer:

i think ur on the right path

Step-by-step explanation:

if it is looking for the percent it would be 23%

7 0

2 years ago

Jamal read a book with 128 pages then he read a book with 179 pages how pages did jamal read?

aliina [53]

128 pages+179 pages=307 pages

6 0

3 years ago

Read 2 more answers

A farmer has a field in the shape of a semicircle of diameter 50 m. First,

dexar [7]

Answer:

157.1 m

Step-by-step explanation:

Here, we want to calculate the length of the semi-circle

This simply refers to the circumference of the semi-circle

Mathematically, the circumference is half that of a full circle

The circumference of a full circle is;

C = pi * d

For half circle or semi-circle;

It is ;

C = (pi * d)/2

D = 50 m

The circumference is thus;

C = 50 * 3.142

C = 157.1 m

5 0

3 years ago