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worty [1.4K]
3 years ago
6

Lin's father is paying for a $20 meal. He has a 15% off coupon for the meal. How much will he pay?

Mathematics
2 answers:
vampirchik [111]3 years ago
8 0

Answer:$17

Step-by-step explanation:

x/20=15/100 then solve for x

sergij07 [2.7K]3 years ago
5 0

Answer:

<em><u>Lin's father will pay $17.</u></em>

Step-by-step explanation:

15 ÷ 100 = 0.15.

0.15 x $20 = $3.

$20 - $3 = $17.

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Suppose that the annual rainfall in Ferndale, California, is known to be normally distributed, with a mean of 35.5 inches and a
erastovalidia [21]

The average annual rainfall will be more than 40.6 inches in about 2.1 percent of the years.

<h3>What is the average annual rainfall?</h3>

Generally, the equation for the probability is mathematically given as

P( X < x) = p( Z < x - \mu / \sigma)

Therefore

P( X > x) = 0.021

P( X < x ) = 1 - 0.021\\\\\p( X < x) = 0.979

P( Z < x - \mu / \sigma) = 0.979

The z score for the probability of 0.979 is 2.034, according to the table of z values.

x - \mu / \sigma \\\\x= 2.034

In the given equation, replace the values of mu and sigma with their respective values, and then solve for x.

x - 35.5 / 2.5 \\x= 2.034

In conclusion, The average annual rainfall will be more than 40.6 inches in about 2.1 percent of the years.

Read more about average

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7 0
2 years ago
Find an expression for the perimeter of rectangle ABCD. Use the formula P= 2l + 2w.
natita [175]

Answer:

(b)

P = [4(4a + 3b]/(2a + b)

Step-by-step explanation:

P = 2L + 2W

P = [2(5a + 4b) + 2(3a + 2b)]/(2a + b)

P = [10a + 8b + 6a + 4b]/(2a + b)

P = [16a + 12b]/(2a + b)

P = [4(4a + 3b]/(2a + b)

3 0
4 years ago
Which are 15% off?<br> 680 to 578<br> 1120 to 896<br> 340 to 289<br> 250 to 212.50
Masteriza [31]
Answers:
680 to 578
340 to 289
250 to 212.50

Reasoning:
To find the percent of a number:
If the percentage is less than 100, we place a decimal point in front of the percent. Then, we multiply the percent by the whole.
For example, .15 x 680 = 102. Since 15% is less than 100, we place a decimal point in front of the 15. Then, we just multiplied it by the whole of 680.

We know that 102 = 15% of 680, so since that is the amount of money taken off the total, we subtract it: 680-102=578. Therefore, the new price is 578.

I did this for the rest of the questions, and there are 3 correct answers:
680 to 578
340 to 289
250 to 212.50
6 0
3 years ago
2x - 6x + 9 factored
sergejj [24]
I might not be correct please let me know !! But as of right now I think the answer is

-(4x-9)
7 0
3 years ago
Solve for x: 5(x + 1) − 8 = 5x(2 − 4)<br><br> A) −5 <br> B) −1/5<br> C) 5 <br> D) 1/5
disa [49]
Solve the rational equation by combining expressions and isolating the variable x.
x = 1/5
Hope this helps! :)
7 0
3 years ago
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