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Anettt [7]
3 years ago
7

A store is having a sale where everything is discounted 30%. Find the discount and the sales price if a customer buys an item th

at normally sells for $365.
Plz help
Mathematics
2 answers:
IgorC [24]3 years ago
7 0
The discount is $109.50, so the sale price would be $245.50
Schach [20]3 years ago
5 0
365 * .030 = 10.95 
i believe that you just subtract that amount from 365, and you would then get 
*354.05*
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PLEASE HELP ASAP! A mountain climber is at an altitude of 2.9 mi above the earth’s surface.
shutvik [7]
You can use Pythagorean theorm to solve.

a^2 + b^2 = c^2
C = 3959 + 2.9 = 3961.9

x = ???? = a
b = 3959
Plugin our data.
a^2 + b^2 = c^2
a^2 + 3959^2 = 3961.9^2
a^2 + 15673681 = 15696651.61
a^2 = 22970.61
\sqrt{a^2} = sqrt{22970.61}
a = 151.560
x = 151.560
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7 0
3 years ago
a pair of dice is rolled. the observation is the number that comes up on each die. the event, e, is “the sum of the dice is eith
Tems11 [23]

Answer:

well I'm sure if this is entirely correct but i would say it would be 12

Step-by-step explanation:

3 0
3 years ago
Set A of six numbers has a standard deviation of 3 and set B of four numbers has a standard deviation of 5. Both sets of numbers
Alenkinab [10]

Given:

\sigma_A=3

n_A=6

\sigma_B=5

n_B=4

\overline{x}_A=\overline{x}_B

To find:

The variance. of combined set.

Solution:

Formula for variance is

\sigma^2=\dfrac{\sum (x_i-\overline{x})^2}{n}      ...(i)

Using (i), we get

\sigma_A^2=\dfrac{\sum (x_i-\overline{x}_A)^2}{n_A}

(3)^2=\dfrac{\sum (x_i-\overline{x}_A)^2}{6}

9=\dfrac{\sum (x_i-\overline{x}_A)^2}{6}

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Similarly,

\sigma_B^2=\dfrac{\sum (x_i-\overline{x}_B)^2}{n_B}

(5)^2=\dfrac{\sum (x_i-\overline{x}_B)^2}{4}

25=\dfrac{\sum (x_i-\overline{x}_B)^2}{4}

100=\sum (x_i-\overline{x}_B)^2

Now, after combining both sets, we get

\sigma^2=\dfrac{\sum (x_i-\overline{x}_A)^2+\sum (x_i-\overline{x}_B)^2}{n_A+n_B}

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\sigma^2=\dfrac{154}{10}

\sigma^2=15.4

Therefore, the variance of combined set is 15.4.

7 0
3 years ago
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ExtremeBDS [4]

8.71 xx10^(12)

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There are two digits to the right of the decimal point, so to move the decimal 12 places, you would need to add 10 zeros.

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4 0
3 years ago
Find the value of x in the triangle shown below.
qaws [65]
It should be 80 if I’m correct
6 0
3 years ago
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