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4 years ago

The coefficient of xy in the product of (4x^2y+)and(3x+y^2) is

Mathematics

1 answer:

Ket [755]4 years ago

5 0

Uuuuuuuuuuuuuuuummmmmmmmmmmmmmmmmmmmmmmmmmmm

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A bicycle that usually sells for 230 is on sale for 15% off. Find the sale price

SSSSS [86.1K]

Answer: $172.50

Step-by-step explanation: Method 1:

The original price of the item is $230.

The discount is 25%.

Let's find 25% of $230.

25% of $230 = 0.25 * $230 = $57.50

The discount amount is $57.50.

Now we subtract the amount of the discount from the original cost.

Sale price = $230 - $57.50 = $172.50

Method 2.

The original price is $230.

That means that $230 is 100% of the price since 100% of a thing means the entire thing.

Since the discount is 25% of the price, we subtract 25% from 100%, 100% - 25% = 75%.

The sale price is 75% of the original price.

Now we find 75% of $230.

75% of $230 = 0.75 * $230 = $172.50

8 0

4 years ago

Read 2 more answers

33. Suppose that the scores on a statewide standardized test are normally distributed with a mean of 78 and a standard deviation

tino4ka555 [31]

Given the scores on a statewide standardized test are normally distributed

Mean = μ = 78

Standard deviation = σ = 3

Normalize the data using the z-score by using the following formula and chart:

$z=\frac{x-\mu}{\sigma}$

Estimate the percentage of scores of the following cases:

(a) between 75 and 81

so, the z-score for the given numbers will be:

$\begin{gathered} 75\rightarrow z=\frac{75-78}{3}=\frac{-3}{3}=-1 \\ 81\rightarrow z=\frac{81-78}{3}=\frac{3}{3}=1 \end{gathered}$

As shown, the percentage when (-1 < z < 1) = 68%

(b) above 87

$87\rightarrow z=\frac{87-78}{3}=\frac{9}{3}=3$

The percentage when (z > 3) = 0.5%

(c) below 72

$72\rightarrow z=\frac{72-78}{3}=\frac{-6}{3}=-2$

The percentage when (z < -2) = 0.5 + 2 = 2.5%

(d) between 75 and 84

$\begin{gathered} 75\rightarrow z=\frac{75-78}{3}=-\frac{3}{3}=-1 \\ 84\rightarrow z=\frac{84-78}{3}=\frac{6}{3}=2 \end{gathered}$

The percentage when ( -1 < z < 2 ) = 68 + 13.5 = 81.5%

3 0

1 year ago

it's a shame 1 hour and 45 minutes to pick 3 1/2 pounds of raspberry at what unit rate did she pick raspberries

Veseljchak [2.6K]

Answer:2 pounds per hour

Step-by-step explanation:

5 0

3 years ago

In a sequence, each number after the first number is obtained by adding 4 to the previous number. If the first number in the seq

jonny [76]

The answer to this question is C

8 0

3 years ago

Tell me these answers

Oksana_A [137]

Answer:

1/3 = 3/9

1/2 = 10/20

3/4 = 12/16

8 0

3 years ago