Round the answer to the nearest tenth.

Mathematics

2 answers:

Tcecarenko [31]3 years ago

6 0

The diameter is about 4.0 square in.

meriva3 years ago

5 0

The diameter is about 4.0 inches

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What part of 40 is 16?

kumpel [21]

The answer would to this question would be 16/40 or 40%.

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3 years ago

How much water should be added to a 15 gallon solution of 35% hydrogen peroxide to create an 8% solution? how many gallons would

katrin2010 [14]

15 gallons of 35% peroxide solution contains 0.35 × 15 = 5.25 gallons of hydrogen peroxide. The rest of the volume is made up of 15 - 5.25 = 9.75 gallons of water.

If we add $x$ gallons of water to the solution, the amount of hyrdrogen peroxide in the solution stays the same, but the volume of water increases to $9.75+x$ gallons, and the total volume increases to $15+x$ gallons.

To get a concentration of 8% in this diluted solution, we add $x$ gallons of water such that

$\dfrac{5.25}{15+x} = 0.08$

Solve for $x$ .

$5.25 = 0.08 (15 + x)$

$5.25 = 1.2 + 0.08x$

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$x = 50.625$

To get the desired concentration, one must add 50.625 gallons of water, and one will end up with a total volume of 65.625 gallons of solution.

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2 years ago

(3,-7) and (9,-5)<br> What is the equation

spin [16.1K]

Answer:

y=1/3x-8

Step-by-step explanation:

let me know if not clear