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Alja [10]
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.)
Mathematics
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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Juanita wants to buy 254.7 pounds of mulch for her garden. The mulch usually costs $6.99 for 50 pounds. Juanita found a sale tha
nlexa [21]

Answer:

Savings = \frac{6.99}{50}\times 254.7 -  \frac{5.99}{50}\times 254.7 dollars.

Step-by-step explanation:

We are given that,

Juanita usually buys 50 pounds of mulch for $6.99.

That is, total cost of 254.7 pounds of mulch = \frac{6.99}{50}\times 254.7 dollars.

Now, since there is sale on the price of the mulch, we have,

Price of 50 pounds of mulch on sale = $5.99

Then, price of 254.7 pounds of mulch on sale = \frac{5.99}{50}\times 254.7 dollars.

Thus, the savings Juanita had = Original price of 254.7 pounds of mulch - Price of 254.7 pounds of mulch on sale.

Hence, savings = \frac{6.99}{50}\times 254.7 -  \frac{5.99}{50}\times 254.7 dollars.

3 0
3 years ago
Read 2 more answers
For the function, f(x)=-8, find:
stealth61 [152]
B - f(3) does not exist
8 0
3 years ago
A 35 pound dog eats an average of 2 1/2 cups of dry dog food a day. If you assume that there is a relationship between size and
zimovet [89]
70 / 35 = 2
So the 70 pound dog weights double the weight of the 35 pound dog, so he will eat twice as much.

2 x 2.5 = 5 cups

Meaning he will eat 5 cups of dry dog food a day.

By the same logic a 140 pound dog would have to eat twice what a 70 pound dog eats, that is 10 cups of dry dog food a day, so 7 1/2 cups are not enough.

Challenge: per pound a dog eats more than a cat. Since you know a 140 pound dog eats 10 cups, you can dive 140 by 10, to find out that each cup feeds 14 pounds, so half a cup would be the amount of food to feed a 7 pound dog, meaning that a dog weighing 1 pound less than a 8 pound cat would need the same amount of food, so it eats more than a cat.

8 0
3 years ago
Can someone help me with this?Can someone help me with this!!!
Elenna [48]

Answer: first fish is -4 and the other is -3

-3 is greater

Step-by-step explanation:

I big brain pls mark brainliest

6 0
2 years ago
Read 2 more answers
the difference between the heights of your chair and your desk is -10 1/4 inches. the height of your desk is 29 3/4 inches. what
OLEGan [10]
Since you said the height of your chair and you desk, chair would go first when subtracting.
C= chair
c - 29.75 = -10.25
 + 29.75  = + 29.75
c= 19.5
So, you chair is 19.5 (19 1/2) inches tall.
8 0
3 years ago
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