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3 years ago

Write (2a)^4 without exponents

Mathematics

2 answers:

Elina [12.6K]3 years ago

5 0

Answer:

$= 16 {a}^{4} \\$

Step-by-step explanation:

$(2a) ^{4}$

$2a \times 2a \times 2a \times 2a \\ = 16 {a}^{4}$

hope this helps

brainliest appreciated

good luck! have a nice day!

bagirrra123 [75]3 years ago

3 0

Answer: 2a*4*4*4*4= x (Vote me brainliest please)

Step-by-step explanation: Exponents are simply telling you to multiply the base number or expression by that many times.

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Solve: 5/12 × 8/15=

Cerrena [4.2K]

Answer:0.5

Step-by-step explanation: If you flip the numbers and the continue to multiply them across and then divide them after you should get 0.5

8 0

3 years ago

Ask Your Teacher Consider a binomial random variable with n = 5 and p = 0.8. Let x be the number of successes in the sample. Eva

Readme [11.4K]

Answer:

0.942 is the required probability.

Step-by-step explanation:

We are given the following in the question:

x is a binomial random variable with n = 5 and p = 0.8.

Then,

$P(X=x) = \binom{n}{x}.p^x.(1-p)^{n-x}$

where n is the total number of observations, x is the number of success, p is the probability of success.

We have to evaluate:

$P(x \geq 3) = P(x = 3) + P(x = 4) +P(x=5)\\\\= \binom{5}{3}(0.8)^3(1-0.8)^2 +\binom{5}{4}(0.8)^4(1-0.8)^1 +\binom{5}{5}(0.8)^5(1-0.8)^0\\\\= 0.2048 +0.4096+0.3276=0.942$

0.942 is the required probability.

4 0

3 years ago

Paige Sanders bought a dozen eggs at a store for 3.65. She bought the same size eggs the next week at the same store for 2.92. W

algol13

The percent of decrease is $0.73. To get that subtract 3.65-2.92 which equals 0.73.

Hope it helps

6 0

2 years ago

The operations manager of a large production plant would like to estimate the mean amount of time a worker takes to assemble a n

xz_007 [3.2K]

Answer:

(15,595, 16,805)

Step-by-step explanation:

We have to:

m = 16.2, sd = 3.75, n = 150

m is the mean, sd is the standard deviation and n is the sample size.

the degree of freedom would be:

n - 1 = 150 - 1 = 149

df = 149

at 95% confidence level the t is:

alpha = 1 - 95% = 1 - 0.95 = 0.05

alpha / 2 = 0.05 / 2 = 0.025

now well for t alpha / 2 (0.025) and df (149) = t = 1,976

the margin of error = E = t * sd / (n ^ (1/2))

replacing:

E = 1,976 * 3.75 / (150 ^ (1/2))

E = 0.605

The 95% confidence interval estimate of the popilation mean is:

m - E <u <m + E

16.2 - 0.605 <u <16.2 + 0.605

15,595 <u <16,805

(15,595, 16,805)

5 0

3 years ago

Kareem purchased a leather jacket for $800 with his new credit card. He budgeted $50 a month to pay toward the debt. When he rea

barxatty [35]

Answer:

1080

Step-by-step explanation:

Firstly, if he is paying 50 per month, we need to know the number of months it would take him to finish paying the money. Hence that would be 800/50 = 16 months

Now we know there is a surcharge of 17.5 for each month he owes a balance. The total balance he is to pay is thus 16 * 17.5 = 280

The total cost of the jacket is thus 800 + 280 = 1080

6 0

3 years ago