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3 years ago

I guessed “doesn’t matter” but I really want to know why it might be that

Mathematics

1 answer:

chubhunter [2.5K]3 years ago

5 0

I'm sorry, but the spinner that you choose does matter in this case.

For spinner A, there are 5 equal sections with a 1 being in only one of them as well. This gives you a $\frac{1}{5}$ chance of landing on the number 1.

For spinner B, there are 6 equal sections with a 1 being in only one of them. This gives you a $\frac{1}{6}$ chance of landing on the number 1 - a worse chance than if you were to use spinner A.

So for this question, you have a better chance of landing on number 1 if you choose to use spinner A.

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I NEED URGENT ASSISTANCE

Nata [24]

Answer:

8 C sometimes

9 64x^8 y^11

10 c 1.28r^2/ t^9

Step-by-step explanation:

Algebraic Operations

Some basic rules must be fresh in our minds when trying to simplify complex algebraic expressions. For example, the power rule respect to the product or quotient:

$\displaystyle \left(\frac{x^n.y^m}{z^p}\right)^q= \frac{x^{qn}.y^{qm}}{z^{qp}}$

$\displaystyle \frac{x^n.x^q}{x^p}= x^{n+q-p}$

$\displaystyle x^{-n}=\frac{1}{x^n}$

Let's face the questions at hand

8. A number is raised to a negative exponent is negative?

Following the expressions recalled above, let's pick the expression

$\displaystyle 3^{-2}=\frac{1}{3^2}=\frac{1}{9}$

This is a negative power resulting in a positive number

Now we pick

$\displaystyle (-2)^{-3}=\frac{1}{(-2)^3}=-\frac{1}{8}$

This time, the negative power leads to a negative result, so it doesn't matter the sign of exponent to determine the sign of the result

Answer: C sometimes

9 simplify(4xy^2)^3(xy)^5

$(4xy^2)^3(xy)^5=4^3x^3(y^2)^3x^5y^5$

$=64x^3y^6x^5y^5$

$=64x^8y^{11}$

10 simplify(2t^-3)^3(0.4r)^2

$(2t^{-3})^3(0.4r)^2=2^3(t^{-3})^30.4^2r^2$

$=8t^{-9} 0.16 r^2$

$=1.28t^{-9} r^2$

$\displaystyle \frac{1.28 r^2}{t^9}$

7 0

3 years ago

(-6x) / (-2) Simplify. 12x 4x 3x 1/12x

ElenaW [278]

$\dfrac{-6x}{-2}=\dfrac{-6}{-2}x=3x$

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3 years ago

Un terreno rectangular cuyo ancho mide 20 mts menos que su largo. Su área del terreno es de 150 metros cuadrados. ¿Determina las

IrinaVladis [17]

Answer:

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2 years ago

A bag containing food has mass 3.813 kg. When the bag is empty its mass is 257 g. Find in kilograms the mass of the fruit

Elden [556K]

Answer:

I think it is 0.257 kg

Step-by-step explanation:

To change units from the gram to kilogram, you need to divide by 1000, because 1kg=1000g:

257÷1000= 0.257 Kg

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3 years ago

I need help with this question

Murljashka [212]

It is the third on down

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3 years ago