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3 years ago

Need to know the answer to the question

Mathematics

2 answers:

Anastaziya [24]3 years ago

8 0

The area is 1680 ft. squared

EastWind [94]3 years ago

3 0

To find the area of this irregular shape, you divide it up into regular shapes and find the area as if it was a regular rectangle. Length times width. So first you would do 40 times 30 which is 1200. Then you would do 20 times 24, which is 480. Where did I get twenty four? I subtracted 40 from 64 to get the missing length. Lastly, we add 480 and 1200 to get 1680. That's the area. 1680.

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zvonat [6]

Answer:

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Step-by-step explanation:

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2 years ago

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If two right triangles each have a 30° angle, then the

Scorpion4ik [409]

Answer:

b. Similar

Step-by-step explanation:

Although angles are congruent the triangles are not as sides need to be the same too. Both shapes have 90 degree and 30 degree and add up to 180 degree in each triangle. Therefore each shapes angles are congruent but we dont know there size or scale, so they are similar. if they are the same (shape and size)- in other words, if the lengths of the sides and the angles are the same. So they are similar.

Because the angles are congruent and sizes are not shown they must be similar.

They cannot be obtuse as no angle is larger than 90 degrees and to be obtuse it would have to be larger than 90 deg and lower than 180 deg.

They cannot be equilateral as that means it couldn't be 30 degree and a right angle as equilateral means same angle sizes within 'one' triangle or for every or each triangle; as we know all triangles that are equilateral are 60, 60, 60 degrees to add up to 180 degree and cannot be an equilateral for this reason too as we have right angle triangles and equilateral are not right angles due to being 60 degree angle measures.

They are not fully congruent as we do not know there side measures so they have to be similar.

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3 years ago

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In need of help with a math problem about domain :/

marissa [1.9K]

Answer: I believe it is D

Why: Domain=x which gets rid of A, and C and because you cannot really now how many tickets you will sale (like B states certain numbers not the range of possibility) I think it’s D

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3 years ago

Calculate the number of kilograms of mercury required to fill a pool that is 20.0 m x 50.0 m x 10.0 m. The density of mercury is

malfutka [58]

Answer:

$m=135000000 Kg$

Step-by-step explanation:

To find the number of kilograms of mercury we need to find how to relate density, mass and, volume. For this we shall recall the density formula:

$\rho=\frac{m}{V}$

where $\rho$ is the density, $m$ is the mass and, $V$ is the volume.

We have the density and want to compute the mass so now we want to know the volume of the pool.

The volume of a rectangular pool is given by the fomula:

$V= (length)(heigh)(width)$ .

So for our pool

$V= (20)(50)(10)$ .

$V= 10000m^{3}$ .

Our density is in $g/mL$ , so the last thing we need to do before computing the mass is to express the density in $Kg/m^{3}$ (this is because we want our mass in $Kg$ and, we have our volume in $m^{3}$ ).