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sineoko [7]
2 years ago
10

A fish tank that holds 80 gallons of water is 55% full. How many gallons are

Mathematics
1 answer:
Amanda [17]2 years ago
5 0
<h2><u>Answer:</u></h2>

55% of the fish tank is <u>44 gallons.</u>

<h2><u>Step-by-step explanation:</u></h2>

To solve this, you turn the 55% into a decimal, by dividing it by 100.

55 ÷ 100 = 0.55

You then <u>multiply</u> the whole capacity (80) by 0.55

80 x 0.55 = <u>44 gallons</u>

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A chemist has 10% and 40% solutions of acid available. How many liters of each solution should be mixed to obtain 120 liters of
kaheart [24]

Answer:

100 liters of  10% solution is used and 20 liters of  40% solution is used

Step-by-step explanation:

Let "X" amount of 10% solution is used. Then the amount of 40% solution used is equal to 120-X

Now

10% of X + 40% of (120-X) = 15% of 120

On solving the above equation, we get

0.1 X + 0.4 (120-X) = 0.15 *120\\0.1 X + 48 -0.4X = 18\\0.3 X = 30\\X = 100liters

Amount of 40% solution used  = 120 -X = 120-100 = 20 liters

100 liters of  10% solution is used and 20 liters of  40% solution is used

7 0
2 years ago
Can someone please help me with this :( asap
Rama09 [41]

b

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7 0
3 years ago
find the average rate of change from t=2 to t=5 for the velocity function v(t)=t^2-t+10. WILL GIVE THE BRAINLIEST ANSWER--EXPLAI
Elina [12.6K]
Answer: The average rate of change is 6.
First, plug in each value of <em>t</em> into the function, v(t) to find there coordinate pairs.

v(2) = (2)^2 - (2) + 10
v(2) = 4 + 8
v(2) = 12

v(5) = (5)^2 - (5) + 10
v(5) = 25 + 5
v(5) = 30

You can write these values as coordinate pairs, like so: (2, 12) and (5, 30).
The formula for the average rate of change is A(x) =  \frac{f(x)-(f(a)}{x-a}. When you plug in the values from this particular case, the average rate of change formula becomes A(t) = \frac{30-12}{5-2}, or A(t)= \frac{18}{3}.

Looking at the equation, you can solve for the average rate of change between t = 2 and t = 5, which equals 6.
8 0
3 years ago
Help<br> Me plssssssss and Thxs
Vanyuwa [196]

Answer:

1. 7/10

2.1/10

3.6/10 (Simplifly is 3/5)

4. 1/10

Step-by-step explanation:

5 0
2 years ago
PLEASE HELP
Papessa [141]
<2,14>  thats the answer its complicated but i got it after the 2nd try 

3 0
3 years ago
Read 2 more answers
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