3 years ago

How much water should be added to 14mL of 15% alcohol solution to reduce the concentration to 7%

Mathematics

1 answer:

leonid [27]3 years ago

6 0

You would need 12ml of water.

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quester [9]

12 are tankesr
40 cars total
12/40
12/40=6/20=3/10

3/10=tankders
10/10-3/10=7/10
7/10=70/100=70%
70% wern't tankser

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3 years ago

Sarah walks to school, 1.5 miles in 30 minutes. what is the snswer to this

nevsk [136]

Answer: 3 mi/h

Step-by-step explanation:

Here we have to find the speed $V$ at which Sarah walks to school, knowing the distance $d$ she has walked and the time $t$ she expends.

So, in this case we can use the following equation:

$V=\frac{d}{t}$

Where:

$d=1.5 mi$

$t=30 min \frac{1 h}{60 min}=0.5 h$

Solving:

$V=\frac{1.5 mi}{0.5 h}$

$V=3 mi/h$ This is Sarah's speed

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3 years ago

A rocket is launched in the air. The graph below shows the height of the rocket hh in meters after tt seconds.

fgiga [73]

Answer:

The answers are=

(38, 0)
time
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Height
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1 year ago

Find the root(s) of the equation x^2=100

Akimi4 [234]

Answer:

x=10,−10

simple, it could be negative OR positive :D

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3 years ago

Asim used 324 ft? of carpet for his living room floor. The living room floor

dybincka [34]

Answer:

Hey there!

Area of a square: Length(Length)

324=Length^2

Length=18 ft.

Let me know if this helps :)

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3 years ago

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