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Vlad [161]
3 years ago
6

A. 4.312 x 10 to the power of 2

Mathematics
2 answers:
son4ous [18]3 years ago
8 0

Answer:

431.2

Step-by-step explanation:

hope this helps :3

Lera25 [3.4K]3 years ago
5 0

Answer:

431.2

Step-by-step explanation:

move the decimal two places to the right

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Help please, explain each step or no points.
Leno4ka [110]
The proportion pop/total = 5/7 is presumed to hold for the next 500 songs.

pop/500 = 5/7
pop = 500*5/7 ≈ 357

357 of the next 500 songs downloaded are expected to be pop songs.
8 0
3 years ago
A pizza shop sells three sizes of pizza, and they track how often each size gets ordered along with how much they profit from ea
777dan777 [17]

Answer:

The mean and standard deviation of Y is $6.56 and $2.77 respectively.

Step-by-step explanation:

Consider the provided information.

Let Y represent their profit on a randomly selected pizza with this promotion.

The company is going to run a promotion where customers get $2 off any size pizza.

Therefore, Y=\text{Profit}-\$2

Y=X-\$2

So the mean will be reduced by 2.

\mu_Y=\mu_X-\$2

\mu_Y =\$ 8.56 - \$2

\mu_Y =\$6.56

If we add or subtract any constant number from a given distribution, then the mean is changed by the same number(i.e constant number) but the standard deviation will remain the same.

Therefore \sigma_Y=\sigma_X=2.77

Hence, the mean and standard deviation of Y is $6.56 and $2.77 respectively.

3 0
3 years ago
What is the equation of the parabola?
Neporo4naja [7]

Answer:

y = -1/8 x² + 5

Step-by-step explanation:

Parabola opens vertically and vertex (h,k) = (0,5), pass point (4,3)

basic formula: y = a(x - h)² + k

y = a (x-0)² + 5

y = ax² + 5         pass (4,3)

3 = 16a + 5

a = (3-5)/16 = -1/8

equation: y = -1/8 x² + 5

check: pass another point (-4,3)

-1/8 * (-4)² + 5 = -2 + 5 = 3

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3 years ago
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kykrilka [37]

Answer: 1.9x2.8 + 3.2+2.8 = 14.28

HOPE THIS HELPS

7 0
2 years ago
9. Which is the quadratic equation the
lesya [120]

Answer:

c

Step-by-step explanation:

6 0
2 years ago
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