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3 years ago

2. Choose all that apply: What are the coordinate point(s) that cross the x-axis

Mathematics

1 answer:

Aleksandr-060686 [28]3 years ago

5 0

Answer:

see explanation

Step-by-step explanation:

The points that cross the x- axis are also called

• x- intercepts

• zeros

• roots

• solutions

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Dylan and Alyssa are going shopping to buy their friend a birthday gift. The item they are planning to buy has a regular price o

rosijanka [135]

Answer:

$31.104

Step-by-step explanation:

Given :

Regular price = $36

Discount on sale = 20%

Discounted price = (100-20)%*36=0.8*36 = $28.8

Sales tax rate = 8% ;

Tax on sale = 8% * $28.8 = 2.304

Final amount that will have to be paid :

Discounted price + tax on sale

$28.8 + $2.304

= $31.104

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3 years ago

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Zarrin [17]

Answer:

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4 years ago

Is a polyhedron basically a 3-D shape?

bazaltina [42]

Yep! Poly means "many," and hedron means "face." It quite literally means many faces.

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3 years ago

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50 POINTS - PLEASE HELP!!!

nikitadnepr [17]

Answer: x = 7

Part A: y = (x)3- + 40

22 = 7 x 3- + 40

22 = 21- + 40

40 - 21 = 22

Part A= 22

Part B: x - 3(7) = 7(y) + x

40 + 37 + 34 + 31 + 28 + 25 + 22

Part B: 217

Step-by-step explanation:

Have a nice day.

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3 years ago

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Se ha determinado que la población P (t) de una colonia de bacterias, t horas después de iniciar la observación, tiene una razón

maxonik [38]

Answer:

La población 20 horas después será de 321,161 bacterias.

Step-by-step explanation:

t horas después de iniciar la observación, tiene una razón de cambio de P'(t) = 350 e0.18t + 220 e-0.3t.

Esto implica que la población después de t horas viene dada por:

$P(t) = \int P^{\prime}(t) dt$

$P(t) = \int (350e^{0.18t} + 220e^{-0.3t}) dt$

Teniendo en cuenta que

$\int e^{at} dt = \frac{1}{a}e^{at}$

$P(t) = \int (350e^{0.18t} + 220e^{-0.3t}) dt$

$P(t) = \frac{350}{0.18}e^{0.18t} - \frac{220}{0.3}e^{-0.3t} + K$

En que k es la población inicial, o sea, $K = 250000$ . Entonces

$P(t) = 1944.44e^{0.18t} -733.33e^{-0.3t} + 250000$

¿Cuál será la población 20 horas después?

Esto eres P(20). Entonces:

$P(20) = 1944.44e^{0.18*20} -733.33e^{-0.3*20} + 250000 = 321161$

La población 20 horas después será de 321,161 bacterias.

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3 years ago