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lubasha [3.4K]
2 years ago
15

What's the first and third quartile of -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 7, 7, 7

Mathematics
1 answer:
jek_recluse [69]2 years ago
5 0

There are 14 total numbers.

Make a list of the 7 lowest numbers:

-5, -4, -3, -2, -1, 0 , 1

The first quartile is the middle value of the lower half of numbers

Since there are 7 numbers ( odd number), the middle value is the middle number, which is -2

Now make a list of the 7 highest numbers:

2, 3 , 4, 5 , 7, 7, 7

The 3rd quartile is the middle value of the higher half of numbers.

Again because there are 7 numbers ( odd number), the middle value is the middle number, which would be 5.

First quartile = -2

Third quartile = 5

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52.9

Step-by-step explanation:


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A 5-month membership to the gym costs $125 jim would like to be a member for 8 months. What is the total amount he Will pay for
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5 0
3 years ago
Maura is 5 years younger than her sister Cara. Seven years ago, Maura was half as old as her sister. How old is Maura now?
masha68 [24]
Let's call Maura's age now M and Cara's age now C.

We know Maura is five years younger than Cara. In symbols that is, M - 5 = C

We also know that 7 years ago Maura's age was half of Cara's. Maura's age 7 years ago was M-7 and Cara's age seven years ago was C-7. Since Maura's age (7 years ago) was half of Cara's we can write in symbols: M-7= \frac{1}{2}(C-7)

Let's take that last equation and substitute C - 5 for M (this is because according to our first equation these are equal). When we do this we get an equation with only C as the variable and solve for C as follows:

M-7= \frac{1}{2}(C-7)
C-5-7= \frac{1}{2}(C-7)
C-12= \frac{1}{2}C-( \frac{1}{2})(7)
C-12= .5C-3.5
.5C-12= -3.5
.5C= 8.5
C= 17

Cara is 17. Since Maura is 5 years younger she is 12.

As a check, seven years ago Cara was 10 and Maura was 5. It is the case that Maura was half Cara's age seven years ago.
4 0
3 years ago
How many 50 cents coins are there in $10:50​
larisa86 [58]

Question:- how many 50 cents coins are there in $10.50

Answer:-

Total amount-> $ 10.50

So amount in cents

$ 1 is equal to 100 cents

$10.50 is equal to 1050 cents

According to the question

Number \:  of  \: the  \: 50 \:  cents= \frac{  Total  \: cents}{ 50  \: cents } \\

Number \:  of  \: the  \: 50 \:  cents =  \frac{1050}{50}  \\ Number \:  of  \: the  \: 50 \:  cents = 21 \:

6 0
3 years ago
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