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3 years ago

9

1. What does a straight line between two point represent?

1 answer:

ipn [44]3 years ago

8 0

1. A straight line between two points represents a line segment.

2. (Video is not provided with the question)

3. You will need 2 points to start a line. (1 point is a ray)

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Nos últimos anos, as queimadas no Pantanal vêm aumentando significativamente por diversos motivos, dos quais os mais comum são a

vodomira [7]

Answer:

211%

Step-by-step explanation:

Somos informados:

Segundo o Instituto Nacional de Pesquisas Espaciais (Inpe), de janeiro a setembro de 2019, foram registrados 4.660 focos de incêndio, em 2020 foram registrados 14.489 focos. Qual é a porcentagem de aumento de focos de incêndio em 2020 em comparação com os focos registrados em 2019?

A fórmula de aumento percentual é fornecida como

Aumentar / tamanho inicial × 100

Aumento = 14489 focos de incêndio - 4660 focos de incêndio

= 9829 focos de incêndio

Aumento percentual = 9829/4660 × 100

= 210.92274678 %

≈ 211%

6 0

3 years ago

As part of a quality-control program, 4 batteries from a box of 17 is chosen at random for testing. In how many ways can this te

belka [17]

Answer:

This test batch can be chosen in 2380 ways

Step-by-step explanation:

The order in which the batteries are chosen is not important. So we use the combinations formula to solve this question.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

In how many ways can this test batch be chosen?

4 batteries from a set of 17. So

$C_{17,4} = \frac{17!}{4!(17-4)!} = 2380$

This test batch can be chosen in 2380 ways

5 0

3 years ago

Tony needs to buy some pencils.Brand A has a pack of 28 pencils for 5.29 dollars. Brand B has a pack of 48 pencils for 8.47 doll

Shalnov [3]

Answer: Brand A is the best buy.

Step-by-step explanation:

Brand A has a pack of 28 pencils for 5.29 dollars. This means that the unit cost of one pencil in Brand A would be

5.29/28 = 0.2$ per pencil rounded up to the nearest tenth.

Brand B has a pack of 48 pencils for 8.47 dollars. This means that the unit cost of one pencil in Brand B would be

8.47/48 = $0.8 per pencil rounded up to the nearest tenth.

Since $0.2 is lesser than $0.8, it means that Brand A is the best buy.

5 0

4 years ago

Finding Derivatives Implicity In Exercise, find dy/dx implicity.<br> x2 - 3 ln y + y2 = 10

Veseljchak [2.6K]

Answer:

$\frac{dy}{dx}=-\frac{2xy}{2y^2-3}$

Step-by-step explanation:

We are given that

$x^2-3lny+y^2=0$

Differentiate w.r.t x

$2x-\frac{3}{y}\frac{dy}{dx}+2y\frac{dy}{dx}=0$

By using formula

$\frac{dx^n}{dx}=nx^{n-1}$

$\frac{d(lnx)}{dx}=\frac{1}{x}$

$\frac{dy^n}{dx}=ny^{n-1}\frac{dy}{dx}$

$\frac{dy}{dx}(-\frac{3}{y}+2y)+2x=0$

$\frac{dy}{dx}(-\frac{3}{y}+2y)=-2x$

$\frac{dy}{dx}=-\frac{2x}{-\frac{3}{y}+2y}$

$\frac{dy}{dx}=-\frac{2xy}{2y^2-3}$

Hence, the derivative of function

$\frac{dy}{dx}=-\frac{2xy}{2y^2-3}$

8 0

4 years ago

Three hundred is 6 percent of what number

faust18 [17]

300 / 0.06 = 5000

answer <span>Three hundred is 6 percent of 5,000

</span>

8 0

4 years ago

Read 2 more answers