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2 years ago

How to do surface area

Mathematics

2 answers:

Mars2501 [29]2 years ago

5 0

Answer:

Step-by-step explanation:

Multiply the length and width, or c and b to find their area. Multiply this measurement by two to account for both sides. Add the three separate measurements together. Because surface area is the total area of all of the faces of an object, the final step is to add all of the individually calculated areas together.

Troyanec [42]2 years ago

3 0

Answer:

Surface area is the sum of the areas of all faces (or surfaces) on a 3D shape. We can also label the length (l), width (w), and height (h) of the prism and use the formula, SA=2lw+2lh+2hw, to find the surface area.

Step-by-step explanation:

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Classify the following triangle as acute, obtuse, or right.

gtnhenbr [62]

Answer: Right

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3 years ago

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△POQ~△ROS. Identify the coordinates of S and the scale factor. HELP ASAP!!

vodka [1.7K]

Answer:

S(-7,0) , 2/7

Step-by-step explanation:

To get coordinates of P we can see that

14*(2/7)=4

Now, to get coordinates of S, we have this equation :

$x*\frac{2}{7}=-2$

Multiply by 7 each side :

2x=-14

x=-7

y=0

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3 years ago

Levi and Beverly paid 20% down on a house valued at $165,000 in 1994. They upgraded the house entirely in 2003, when they refina

aalyn [17]

Answer:

$25,000

Step-by-step explanation:

Given:

House valued at(20% down) = $165,000

Amount receive from selling the house = $190,000

Find:

Value of equity from home on selling = ?

Computation:

⇔ Value of equity from home on selling = Amount receive from selling the house - House valued at(20% down)

⇔ Value of equity from home on selling = $190,000 - $165,000

⇔ Value of equity from home on selling = $25,000

7 0

2 years ago

The quantity demanded x each month of Russo Espresso Makers is 250 when the unit price p is $138. The quantity demanded each mon

Stells [14]

Answer:

(a) $D(q)=\frac{-1}{25} q+148$

(b) $S(q)=\frac{1}{50}q+58$

Step-by-step explanation:

(a) For the demand equation D(q) we have

P1: 138 Q1: 250

P2: 108 Q2: 1000

We can find m, which is the slope of the demand equation,

$m=\frac{p_{2} -p_{1} }{q_{2} -q_{1} }=\frac{108-38}{1000-250} =\frac{-30}{750}=\frac{-1}{25}$

and then we find b, which is the point where the curve intersects the y axis.

We can do it by plugging one point and the slope into the line equation form:

$y=mx+b\\\\D(q)=mq+b\\\\138=\frac{-1}{25}(250) +b\\\\138=-10+b\\\\138+10=b=148$

With b: 148 and m: -1/25 we can write our demand equation D(q)

$D(q)=\frac{-1}{25} q+148$

(b) to find the supply equation S(q) we have

P1: 102 Q1: 2200

P2: 102 Q2: 700

Similarly we find m, and b

$m=\frac{p_{2} -p_{1} }{q_{2} -q_{1} }=\frac{72-102}{700-2200} =\frac{-30}{-1500}=\frac{1}{50}$

$y=mx+b\\\\D(q)=mq+b\\\\72=\frac{1}{50}(700) +b\\\\72=14+b\\\\72-14=b=58\\$

And we can write our Supply equation S(q):

$S(q)=\frac{1}{50}q+58$

(c) Now we may find the equilibrium quantity q* and the equilibrium price p* by writing D(q)=S(q), which means the demand equals the supply in equilibrium:

$D(q)=S(q)\\\\\frac{-1}{25}q+148=\frac{1}{50}q+58\\\\$