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zysi [14]
4 years ago
13

At a local school supply store, a highlighter costs $1.25, a ballpoint pen costs $0.80, and a spiral notebook costs $2.75. Expla

in how you can use the Commutative Property of Addition to find the total cost if three of each item are purchased!
Mathematics
1 answer:
egoroff_w [7]4 years ago
4 0
Since the communative property shows you can add or multipy in any order, this means you can add all three of these in a different order and still get the same answer.....For example, you can do $1.25 + $0.80 + $2.75 or you can switch it around and do it in another way
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M=-3; (1,4) write in slope intercept form
Juli2301 [7.4K]

Answer:

y = -3x + 7

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
In 2015, Oklahoma experienced 907 perceptible earthquakes (far surpassing California), for an average of about 2.5 perceptible e
Rufina [12.5K]

Answer:

The probability P of a day with no perceptible earthquakes is 0.0821.

Step-by-step explanation:

We will consider that earthquakes occurring in a day is a <u>Poisson process</u>. The following Poisson probability distribution formula will be used in this question.

<u>p(x,λ) = [e^-λ (λ)ˣ]/x!</u>

where x = number of outcomes occurring

           λ = mean number of occurrences

(a) So, in this question we have λ = 2.5 and we need to find the probability that x=0 (no perceptible earthquakes in a day). So,

P(X=0) = p(0,2.5) = [(e^-2.5)(2.5)⁰]/0!

                            = ((0.0821)*1)/1

P(X=0) = 0.0821

The probability P of a day with no perceptible earthquakes is 0.0821.

6 0
4 years ago
How many combinations of players can a coach have if he needs to pick 2 out of a total of 4?
Leto [7]

Answer:

the coach will have a combination of 2 players since there are initially 4 players on ground and he's picking two from them.

8 0
3 years ago
ANSWER QUICKLY. I GIVE BRAINLIEST AND A FOLLOW.​
LekaFEV [45]

Answer:

(4,-3)

Step-by-step explanation:

This is where the 2 lines meet

5 0
3 years ago
Read 2 more answers
Mrs.Brooks lacks 7 from being fice times as old as her son. Six years from now she will lack 3 years from being three times as o
nalin [4]

Answer:

Step-by-step explanation:

Let the age of of Mrs brook be x

Age of her son be y

If Mrs.Brooks lacks 7 years from being five times as old as her son, this means;

x = 5y - 7 ..... 1

six years from now;

Mrs brooks age = x + 6

sons age = y + 6

If Six years from now she will lack 3 years from being three times as old as her son, this means;

x+ 6 = 3(y+6) - 3

x+6 = 3y + 18 - 3

x+6 = 3y + 15 .... 2

substitute 1 into 2;

(5y - 7)+6 = 3y + 15

5y - 1 = 3y + 15

5y-3y = 15 + 1

2y = 16

y = 8

substitute y = 8 into equation 1;

x = 5y - 7

x = 5(8)-7

x = 40-7

x = 33

Hence the mrs brook is 33 years old

her son is 8 years old

3 0
3 years ago
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