Student annual household income. A. Nominal. B. Ordinal. C. Interval. D. Ratio

The beach ball we played with has a density of 10 grams per cubic centimeter

Wittaler [7]

Answer: does not make sense.

The statement " the beach ball we played with has a density of 10 grams per cubic centimeter" does not make sense.

Reasoning.

Inflated beach balls have a very low density, they are pretty much only air, plus the weight of the ball per se. Certainly that density is much lower than the density of water.

Inflated beach balls fall slowly in the air because their density is very close to the density of air and float on water because their density is less than the density of water.

Being the density of pure water 1 g/cm^3 you can predict, without any calculation, that the density of the beach ball is less than that and never 10 g/cm^3 which is 10 times the density of pure water.

3 0

3 years ago

4. Determine the domain of the function below.

Travka [436]

uh what function??

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7 0

3 years ago

What is the unknown number in the equation? 5×n=3000

Eva8 [605]

Answer & Step-by-step explanation:

Simplifying

5n = 3000

Solving

5n = 3000

Solving for variable 'n'.

Move all terms containing n to the left, all other terms to the right.

Divide each side by '5'.

n = 600

Simplifying

n = 600

3 0

3 years ago

A watch seller gained 20% by selling a watch for rupees 1260. what was its cost price and if we add gain 30% at what price shoul

vekshin1

Answer:

1365 rupees

Step-by-step explanation:

1. Approach

The easiest method to solve this problem is via the method of proportions. One can use a proportion to find the original price of the watch. Then one can find the price of the watch if the watch had a (30%) mark up, by using a proportion.

2. Find the original price

Remember, the general format of a proportion is the following:

$\frac{part}{total}=\frac{percent}{100}$

The following information is given:

The watch sold for (1260) rupees which is (120%) of the original price. Remember, there was a (20%) gain, meaning that the seller recovered (120%) of the price, in essence, the price of the watch, plus (20%) extra, thus (120%). Substitute these values into the proportion and solve,

$\frac{part}{total}=\frac{percent}{100}$

$\frac{1260}{total}=\frac{120}{100}$

Simplify,

$\frac{1260}{total}=\frac{120}{100}$

$\frac{1260}{total}=\frac{6}{5}$

Cross product,

$\frac{1260}{total}=\frac{6}{5}$

$(5)(1260)=(6)(total)$

Simplify,

$(5)(1260)=(6)(total)$

$6300=6*total$

Inverse operations,

$6300=6*total$

$1050=total$

3. Find the price if the mark up is (30%)

Now, one knows the original price of the watch. Set up a proportion to find the price of the watch if there is a (30%) mark up. Use the same logic to set up this proportion as was used to set up the last one. The (percent) will be (130%) because the new price of the watch is (130%) of the original watch.

$\frac{part}{total}=\frac{percent}{100}$

Substitute,

$\frac{part}{total}=\frac{percent}{100}$

$\frac{part}{1050}=\frac{130}{100}$