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seropon [69]
3 years ago
10

Write 128 as a product of primes

Mathematics
1 answer:
Lyrx [107]3 years ago
3 0

Answer:

2 x 2 x 2 x 2 x 2 x 2 x 2 = 128

OR

2^7

Step-by-step explanation:

2 is the only prime number you can multiply to get 128.

as such your answers are :

2^7

or

2 x 2 x 2 x 2 x 2 x 2 x 2.

(if you don't know yet, 2^7 is just a simple way to say 2 times itself 7 times.)

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If 4 gallons of gasoline cost $13.76, how much will 11 gallons of gasoline cost?
Marat540 [252]

Answer:

x=37.84

Step-by-step explanation:

We can write a ratio to solve

4 gallons        11 gallons

--------------- = ----------------

13.76              x dollars

Using cross products

4x = 11*13.76

4x=151.36

Divide by 4

4x/4 = 151.36/4

x=37.84

6 0
3 years ago
Of the last 15 flights to arrive at Westford Airport, 6 were late. Considering this data, how many of the next 10 flights would
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Answer:

4

Step-by-step explanation:

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3 years ago
What is the surface area of the right prism below?
Ilya [14]
350
Find the area of each shape then add all of the areas to get your surface area
3 0
3 years ago
a hardcover book sells for $24 at the Bookmart. Ben pays a total of $25.02 for the book. What is the sales tax rate?
lana [24]
25.02-24=1.02
1.02/24=.0425
So the sales tax rate is 4.25%
3 0
3 years ago
Determine the minimum sample size required when you want to be 99% confident that the sample mean is within 0.50 units of the po
vfiekz [6]

Answer:

b. 224

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.99}{2} = 0.005

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.005 = 0.995, so z = 2.58

Now, find the margin of error M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

In this problem:

We want to find n, when M = 0.5, \sigma = 2.9 So

M = z*\frac{\sigma}{\sqrt{n}}

0.5 = 2.58*\frac{2.9}{\sqrt{n}}

0.5\sqrt{n} = 7.482

\sqrt{n} = 14.964

(\sqrt{n})^{2} = (14.964)^{2}

n = 223.9

The nearest integer number to 223.9 is 224.

So the correct answer is:

b. 224

6 0
3 years ago
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