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1 year ago

Write (9m)^4 without exponents.

Mathematics

2 answers:

Elodia [21]1 year ago

7 0

(9m)^4 means 9m is multiplied by itself 4 times:

It can be written as: (9m)(9m)(9m)(9m)

Heart if it was helpful

TEA [102]1 year ago

6 0

9m*9m*9m*9m because your multiplying 9 by m four times

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Deana gave her younger sister $5.48 to buy some candy. Her sister returned $2.84 in change. How much did her sister spend on can

alexandr402 [8]

Answer:

$2.64

Step-by-step explanation:Get rid of the dollar sign and just subtract like normal.

5.48

- 2.84

= 2.64

5 0

2 years ago

El Sr negron tiene que redactar una serie de cartas en su oficina. A Lourdes le toma 6 horas pasar todas las cartas. A su compañ

vodka [1.7K]

El Sr negron tiene que redactar una serie de cartas en su oficina. A Lourdes le toma 6 horas pasar todas las cartas. A su compañera rosabel, le toma 9 horas en realizar la misma tarea. Si ambas trabajan juntas para hacer todo el trabajo d ela oficina,

a. Cuánto tiempo le tomará a ambas realizar el trabajo?

Answer:

3.6 horas

Step-by-step explanation:

Sea el número total de horas que ambos trabajaron = T

Deje que la cantidad total de letras por las que pasaron = 1

De la pregunta, se nos dice:

Lourdes necesitó 6 horas para revisar las cartas.

Esto significa que, cada 1 hora, Lourdes revisaba 1/6 de las letras

Rosabel tardó 9 horas en leer las letras.

Esto significa que, cada 1 hora, Rosabel revisó 1/9 de las letras

Por lo tanto,

(1/6 × 1) T + (1/9 × 1) T = 1

(1/6 + 1/9) T = 1

(3 + 2/18) T = 1

(18/5) T = 1

5T / 18 = 1

Cruz multiplicar

5T = 18

T = 18/5

T = 3.6 horas

Por lo tanto, les tomó a ambas 3.6 horas hacer el trabajo.

7 0

2 years ago

According to a survey by Bankrate, of adults in the United States save nothing for retirement (CNBC website). Suppose that adult

mezya [45]

Complete Question

The complete question is shown on the first uploaded image

Answer:

Yes the selection of 15 is a binomial experiment

$P(r = 15) = 3.2768 *10^{-11}$

$P(r = 5) = 0.1032$

$P(r \ge 1 ) = 0.9648$

Step-by-step explanation:

considering question a

Generally for and experiment to be binomial

The trial must be independent

There must be only two outcomes for each trial

Generally given that that the 15 adults are selected randomly which mean that the trials will be independent and that desired outcome is ''ether the adult save something for retirement or the adult saves nothing for retirement ''

Then we can say that the selection of 15 adult at is a binomial experiment

Considering question b

Generally the probability that all of the adults save nothing for retirement is mathematically represented as

$P(r = n) = ^nC_r * p^r * q^{n-r}$

Here C stands for combination

r = 15 i.e all the selected adults

n is the sample size with value 15

From the question p = 0.20

and q is calculated as

$q = 1 - p$

=> $q = 1 - 0.20$

=> $q = 0.80$

$P(r = 15) = ^{15}C_{15} * p^{15} * q^{15-15}$

$P(r = 15) = 3.2768 *10^{-11}$

Considering question c

Generally the probability that exactly five of the selected adults save nothing for retirement is mathematically represented as

$P(r = 5) = ^{15} C_5 * (0.20)^5 * (0.80)^{15}$

$P(r = 5) = 0.1032$

Considering question d

Generally the probability that at least one of the selected adults saves nothing for retirement is mathematically represented as

$P(r \ge 1 ) = 1 - P (r = 0 )$

$P(r \ge 1 ) = 1 - [ ^{15} C _ 0 * (0.20)^{0} * (0.80 )^{15}]$

$P(r \ge 1 ) = 1 - 0.0352$

$P(r \ge 1 ) = 0.9648$

4 0

2 years ago

The Palace of Peace and Accord in Astana, Kazakhstan, was built in 2006. The building has a square right pyramid structure. The

dem82 [27]

The height you are looking for is called the "slant height".
slant height^2 = height^2 + (half the base length)^2
slant height^2 = 62^2 + 31^2
slant height^2 = 3,844 + 961
slant height^2 = 4,805
slant height = 69.3181073025 
slant height = 69.3 (rounded)

Source:
http://www.1728.org/volpyrmd.htm

3 0

2 years ago

Read 2 more answers

Roy's average balance checking account pays simple interest of 4.8% annually and he made $2.25 in interest last month. What was

Leona [35]

Answer:

It’s 5625.00 don’t listen to this other one

Step-by-step explanation:

5 0

1 year ago