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4 years ago

How many faces does a pyramid with a square base have? A. Five B. Eight C. Six D. Seven

Mathematics

2 answers:

Luda [366]4 years ago

8 0

Answer:

A. Five

Step-by-step explanation:

kherson [118]4 years ago

4 0

Answer:

The answer is five.

Step-by-step explanation:

A pyramid with a square base has one square face and there are four triangle faces, so there are five in total.

I hope this helped! :-)

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In a previous exercise we formulated a model for learning in the form of the differential equation dP dt = k(M − P) where P(t) m

GalinKa [24]

Answer:

$\frac{dP}{M-P}= kdt$

And we can integrate both sides of the equation using the following substitution:

$u= M-P, du =-dP$

And replacing we got:

$\int -\frac{du}{u} = kt +C$

$-ln (u)= kt+c$

If we multiply both sides by -1 we got:

$ln (u ) = -kt -c$

$ln (M-P) = -kt -c$

And using exponential in both sides of the equation we got:

$M-P = e^{-kt} e^{-c}$

And solving for P we got:

$P(t) = M- e^{-kt}e^{-c}$

And replacing $P_o =e^{-c}$ we got:

$P(t) = M - P_o e^{-kt}$

We can use the condition $P(0)=0$ and we got:

$0 = M -P_o e^0$

And we see that $M = P_o$ and replacing we got:

$P= M(1- e^{-kt})$

Step-by-step explanation:

For this case we aasume the following differential equation:

$\frac{dP}{dt}= k(M-P)$

Is a separable differential equation so we can do the following procedure:

$\frac{dP}{M-P}= kdt$

And we can integrate both sides of the equation using the following substitution:

$u= M-P, du =-dP$

And replacing we got:

$\int -\frac{du}{u} = kt +C$

$-ln (u)= kt+c$

If we multiply both sides by -1 we got:

$ln (u ) = -kt -c$

$ln (M-P) = -kt -c$

And using exponential in both sides of the equation we got:

$M-P = e^{-kt} e^{-c}$

And solving for P we got:

$P(t) = M- e^{-kt}e^{-c}$

And replacing $P_o =e^{-c}$ we got:

$P(t) = M - P_o e^{-kt}$

We can use the condition $P(0)=0$ and we got:

$0 = M -P_o e^0$

And we see that $M = P_o$ and replacing we got:

$P= M(1- e^{-kt})$

8 0

3 years ago

43 x 2 ÷ 4 - √81 x 3 ÷ 33 - 9 =

Kitty [74]

Answer:

11.6818181818

Step-by-step explanation:

U 2 can help me by marking as brainliest.........

8 0

2 years ago

A penguin walks 10 feet in 6 seconds. At this speed how far does the penguin walk in 45 seconds?

lianna [129]

10/6 feet per second
10/6 * 45 = 75 feet

7 0

3 years ago

4(6x +12) = -216, what is X?

ira [324]

Answer: x=-11

Step-by-step explanation:

4(6x+12)=-216 Distribute the 4 in the parenthesis

24x+48=-216

24x=-216

-216 divided by 24

answer= -11

3 0

3 years ago

Read 2 more answers

How far is a chord of length 8cm from the centre of a circle of radius 5cm

alex41 [277]

I think the answer is 3cm I’m not 100% sure

4 0

4 years ago