3 years ago

What is perimeter and area

Mathematics

2 answers:

miss Akunina [59]3 years ago

5 0

Perimeter is the surrounding of a shape area is the space inside a shape

Vinvika [58]3 years ago

3 0

Perimeter is the distance around the figure 2l + 2w
Area is the measure of the space inside of the figure l x w

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Find a quadratic model for the set of values: (-2, -20), (0, -4), (4, -20). Show your work.

Ivahew [28]

Ok... so this question can be solved by using simultaneous equations.

Use the general from of a parabola

$y = ax^2 + bx + c$

you know the value of c, the y-intercept... y = -4

which means the equation is

$y = ax^2 + bx - 4$

now use the other 2 points to get 2 equations in 2 unknowns

(-2, -20) just substitute

$-20 = (-2)^2a + (-2)b - 4 ~~~or~~~ -20 = 4a - 2b - 4$

this becomes

$4a - 2b = -16$

now the other equation using (4, -20)

The simplified form is

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3 years ago

All 203 students at Polk school eat lunch at the same time One day 19 students were absent if 8 students sit at each table yhw l

lisov135 [29]

Answer:

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Step-by-step explanation:

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3 years ago

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The formula for the surface area of a cylinder with radius r and height h is at times twice the product of the

MrMuchimi

Answer:

<em> $2\pi \: rh + 2\pi {r}^{2} = 2(t \times {r}^{2} )$ </em>

Step-by-step explanation:

The TSA of the cylinder

$2\pi \: rh + 2\pi {r}^{2}$

In Mathematics, 'is' is =

Twice means 2( )

Product means ×

So we have

$2\pi \: rh + 2\pi {r}^{2} = 2(t \times {r}^{2} )$

as the answer.

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Anon25 [30]

Answer:

Step-by-step explanation:

you have to subtract 110 by 42 then when you have that number you divide it by two. then you add 42 to one of the twin numbers. That will be how many jason has, and albert will have the other number you kept the same.

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Simple volume problem!

Stels [109]

The answer is b 6 hope this helped you

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