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3 years ago

3^-1 ___ 1/4 a > b < c =

Mathematics

1 answer:

Readme [11.4K]3 years ago

8 0

Answer:

a ">"

Step-by-step explanation:

3 to the power negative one (-1) is the same as 1/3 (one unit divided by 3).

1/4 on the other hand is one unit divided by 4.

Dividing one object into three parts (think for example a chocolate bar) gives you a larger (greater) piece than dividing it into four equal pieces.

Therefore 1/3 > 1/4

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Mia got $80 for her birthday and spent $60. What percent of her birthday money does she have left

max2010maxim [7]

Answer:

16 percent is left

Step-by-step explanation:

20/100×80

Hope it helps!!

4 0

3 years ago

If a woman making $31,000 a year receives a cost-of-living increase of 2.4%, what will her new salary be?

kompoz [17]

Her new salary would be $31,744.

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3 years ago

Un dirigible que está volando a 800 m de altura, distingue un pueblo con un ángulo de depresión de 12°. ¿A qué distancia del pue

alexira [117]

Answer:

3764 m

Step-by-step explanation:

Resolvemos usando la función trigonométrica de tangente.

tan θ = Opuesto / Adyacente

θ = Ángulo de depresión = 12 °

Opuesto = 800m

Adyacente = Distancia de la ciudad = x

Cruz multiplicar

bronceado 12 = 800 / x

Cruz multiplicar

bronceado 12 × x = 800

x = 800 / tan 12

x = 3763.7040876 m

Aproximadamente = 3764 m

6 0

3 years ago

Clare has 130 songs in her music collection. Fifty-nine of the songs are rock and roll. About what percent of the songs are rock

Vlad1618 [11]

Hi lovely,

The answer you're looking for would be 76.7

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4 0

3 years ago

Read 2 more answers

A manufacturer of new light bulbs claims the average lifetime of its long-life bulb is more than 4000 hours. To test this claim,

natka813 [3]

Answer: C. 12.5

Step-by-step explanation:

Given : A manufacturer of new light bulbs claims the average lifetime of its long-life bulb is more than 4000 hours.

Population mean : $\mu=4000$

Sample size : n= 100

Sample mean : $\overline[x}=4500$

Standard deviation: $s=400$

The value of test-statistic is given by :-

$z=\dfrac{\overline{x}-\mu}{\dfrac{s}{\sqrt{n}}}\\\\\Rightarrow\ z=\dfrac{4500-4000}{\dfrac{400}{\sqrt{100}}}\\\\\Rightarrow\ z= 12.5$

Hence, the value of the test statistic for this problem is 12.5.

5 0

3 years ago