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2 years ago

HELPPPPPP!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

Mnenie [13.5K]2 years ago

7 0

Answer:

The student is wrong.

Step-by-step explanation:

To divide exponents (or powers) with the same base, subtract the exponents. In the second step, the wrong result is calculated.

$\frac{x^{\frac{6}{5}}}{x^{\frac{2}{5}}} = x^{\frac{4}{5}}$

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5. photo album: $25.50, 10% markup

sasho [114]

Answer:

$28.05

Step-by-step explanation:

If you want to find how much the photo album is after the markup, you first have to find 10% of the original price. 10% of $25.50 is $2.55, so you add $2.55 and $25.50 to find the price after the markup.

Hope this helps!

3 0

2 years ago

What percentage is 0.00042 ?

pogonyaev

Answer:

0.042%

How much is the decimal number 0.00042 written as (converted to) a percent value? Answer: 0.042%

Step-by-step explanation:

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2 years ago

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Add the polynomials.<br> (3x3 - 3x2 - 4x + 9) +(6x2 +7x - 5)

bixtya [17]

Answer:

3x +19

Step-by-step explanation:

(9-6-4x+9)+(12+7x-5)

(12-4x)+(7+7x)

3x+19

6 0

2 years ago

The probability that a randomly chosen citizen-entity of Cygnus is of pension age† is approximately 0.7. What is the probability

victus00 [196]

Answer: 0.2401

Step-by-step explanation:

The binomial distribution formula is given by :-

$P(x)=^nC_xp^x(1-p)^{n-x}$

where P(x) is the probability of x successes out of n trials, p is the probability of success on a particular trial.

Given : The probability that a randomly chosen citizen-entity of Cygnus is of pension age† is approximately: p =0.7.

Number of trials : n= 4

Now, the required probability will be :

$P(x=4)=^4C_4(0.7)^4(1-0.7)^{4-4}\\\\=(1)(0.7)^4(1)=0.2401$

Thus, the probability that, in a randomly selected sample of four citizen-entities, all of them are of pension age =0.2401

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2 years ago

To make rice you need to use 1 cup of rice for every 2 cups of water. How many cups of rice will be needed for 1 cup of water?

Ratling [72]

Answer:

1/2 a cup

Step by step example:

4 0

2 years ago