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3 years ago

6

The equations = p - 0.15p represents the sale price a of an item with an original price p, after a 15% discount. Make a table to

find the discount prices for items with original prices of $12 $16 $20 and $25

1 answer:

MariettaO [177]3 years ago

6 0

12-0.15×12=$10.2
16-0.15×16=$13.6
20-0.15×20=$17
25-0.15×25=$21.25
Sorry if this didn't help.

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A carpenter has wood planks that are 4 yards, 8 yards, 7 yards, and 3 yards long. what is the mad of these measurements

noname [10]

Answer:

6

Step-by-step explanation:

what you have to do to find that out is add them all togeather the divide that whole by the amount of numbers you were adding so in this case it would be 3 so you would add 8,7, and 3 to get 18 then divide that by 3 to get 6.

hope this helps

pls mark brainliest

8 0

3 years ago

The offices of president, vice president, secretary, and treasurer for an environmental club will be filled from a pool of 15c

Alexus [3.1K]

Answer:

a) 5.13% probability that all of the offices are filled by members of the debate team

b) 2.56% probability that none of the offices are filled by members of the debate team

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

The order in which the people are chosen is important, since the first person is the president, the second is the vice president and so on... So we use the permutations formula to solve this question.

Permutations formula:

The number of possible permutations of x elements from a set of n elements is given by the following formula:

$P_{(n,x)} = \frac{n!}{(n-x)!}$

(a) What is the probability that all of the offices are filled by members of the debate team?

Desired outcomes:

4(president, vice president, secretary, and treasurer) offices from a set of 8(candidates of the members debate team).

So

$D = P_{(8,4)} = \frac{8!}{(8-4)!} = 1680$

Total outcomes:

4 offices from a set of 15 candidates.

$T = P_{(15,4)} = \frac{15!}{(15-4)!} = 32760$

Probability:

$P = \frac{D}{T} = \frac{1680}{32760} = 0.0513$

5.13% probability that all of the offices are filled by members of the debate team

(b) What is the probability that none of the offices are filled by members of the debate team?

Desired outcomes:

4(president, vice president, secretary, and treasurer) offices from a set of 7(candidates who are not of the members debate team).

$D = P_{(7,4)} = \frac{7!}{(7-4)!} = 840$

Total outcomes:

4 offices from a set of 15 candidates.

$T = P_{(15,4)} = \frac{15!}{(15-4)!} = 32760$

Probability:

$P = \frac{D}{T} = \frac{840}{32760} = 0.0256$

2.56% probability that none of the offices are filled by members of the debate team

7 0

4 years ago

The length of a rectangle is 2 inches more than a number. The width is 1 inch less than twice the same number. If the area of th

Tanya [424]

Answer:

length: 6 inches

width: 7 inches

Step-by-step explanation:

Let n represent the number. Then the length is (n+2) and the width is (2n-1). The product of these dimensions is the area:

42 = (n+2)(2n -1) = 2n^2 +3n -2

2n^2 +3n -44 = 0 . . . . subtract 42

(n -4)(2n +11) = 0 . . . . . factor

n = 4 . . . . . . . . we aren't interested in the negative solution

Length = 4+2 = 6 . . . inches

Width = 2·4 -1 = 7 . . . inches

6 0

3 years ago

Your family orders delivery from a local restaurant

anyanavicka [17]

Answer:

1 person ordered chicken and 5 people ordered steak

Step-by-step explanation:

Since we have equations already given, lets solve to get the answer.

<u>First, substitution</u>

x=6-y

<u>Then, as per the second equation</u>.

14(6-y) + 17y = 99

84-14y + 17y = 99

3y=99-84

3y= 15

y= 15/3

y= 5

<u>Then</u>

x=6-y

x=6-5

x=1

We got 1 chicken and 5 steak orders

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4 years ago

What is the value of M? 14 2m = 4m -16 Please help!

astra-53 [7]

16-4=12
4+12=16
I think this right.

4 0

4 years ago