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cupoosta [38]
3 years ago
13

Elliot wants to compare the density of four objects to the density of water. Elliot knows that if an object sinks in water, it h

as a higher density than water and that if an object floats in water, it has a lower density than water.
Which of the following is a scientific investigation that Elliot could conduct to test the densities of the objects?
A.
Elliot could put the four objects in water to see if they sink or float.
B.
Elliot could look up the densities of the objects in a textbook.
C.
Elliot could ask his teacher which object has the greatest density.
D.
Elliot could put the objects in water to see how much water they absorb.
Mathematics
1 answer:
matrenka [14]3 years ago
3 0

Answer: A would be the best answer

Step-by-step explanation:

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1/4x – 2 = 3/8 Please show an equation and work. :)
Julli [10]
1/4x - 2 = 3/8

First, to start solving this, we can rearrange our fraction. Let's take 1/4x and change it to x/4. Why? Well, a variable can also be considered as the number 1.
\frac{x}{4} - 2 =  \frac{3}{8}

Second, now we can continue solving for our variable (x). Let's add 2 to each side.
\frac{x}{4} =  \frac{3}{8} + 2

Third, let's simplify 3/8 + 2. (3/8 + 2 = 2.375 =19/8)
\frac{x}{4} =  \frac{19}{8}

Fourth, continue trying to get the variable by itself. Multiply each side by 4.
x =  \frac{19}{8} \times 4

Fifth, let's simplify 19/8 × 4. This is simple. Leave the denominator be and just do 19 × 4, which equals 76.
x =  \frac{76}{8}

Sixth, our final step is to simplify our fraction. To do so, we will need to list the factors of the numerator and denominator and find the greatest common factor (GCF).

Factors of 76: 1, 2, 4, 19, 38, 76
Factors of 8: 1, 2, 4, 8

Since 4 is our first common factor, it is considered our GCF.

Seventh, now let's divide. Divide both the numerator and denominator by the GCF (4) to create our new simplified fraction.
76 \div 4 = 19 \\ 8 \div 4 = 2

Answer in fraction form: \fbox {x = 19/2}
Answer in decimal form: \fbox {x = 9.5}
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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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