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3 years ago

Xbnm,dfghjkihgfdsadfghjkhgfdsfghjkhgfd

Mathematics

1 answer:

ikadub [295]3 years ago

7 0

Answer:

i agree :)

Step-by-step explanation:

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What is the upper quartile of the following set 28, 45, 12, 34, 36, 45, 19, 20

Nataly_w [17]

Answer:

Q3 = 40.5

Step-by-step explanation:

The first step to solve your exercise is ordering all the elements of the data set.

So the ordered data set is:

12, 19, 20, 28, 34, 36, 45, 45

The upper quartile is the median of the upper half of a data set. Mathematically, the upper quartile is the term at the position P defined by the equation below

$P = \frac{3(n+1)}{4}$

This exercise data-set has a cardinality of 8, so n = 8.

$P = \frac{27}{4}$

However, P = 6.75. When the decimal part is .75, we subtract .25, so P = 6.50.

So, the upper qurtily is the average between the 6th and 7th terms in the ordered set.

Uq = Q3 = (45+36)/2 = 40.5

8 0

3 years ago

Read 2 more answers

Help me pls now help

marshall27 [118]

Answer:

Step-by-step explanation:

Since DF and BC are similar, their ratios are:

12:3

4:1

Since AB is similar to ED:

Substituting the ratio:

x:4

Hence, x = 16

Hence, AB = 16

Hope this helps and be sure to have a wonderful time ahead at Brainly! :D

8 0

3 years ago

Read 2 more answers

16. Mum went shopping at the vegetable stand.

kondaur [170]

Good evening

Answer:

a) the cost of one apple is €0.9

b) the cost of one pineapple is €5.4

c) the cost of two pineapples and six apples is €16.2

Step-by-step explanation:

Consider P the price of a pineapple

A the price of an apple

A pineapple costs six times as much as an apple means P = 6A

Mum paid €7.20 for one pineapple and two apples means P + 2A = 7.20

then

6A + 2A = 7.20

then

8A = 7.20

then

A = €0.9

Since P = 6A then P = 6×(0.9) = €5.4

the cost of two pineapples and six apples

= 2P + 6A

= 2P + P

= 3P

= 3×(5.4)

= €16.2

7 0

3 years ago

the length of a diagonal of a square field is 220 metres find the length of a side in metres and the area of the field in hectar

andre [41]

Answer:

Step-by-step explanation:

h^2=x^2+y^2, since this is a square x=y=s so

220^2=2s^2

2s^2=48400

s^2=24200

s=24200^(1/2)m (exact)

s=155.56m (rounded to nearest hundredth of a meter)

One hectare is equal to 10000m^2

A=24200m^2(h/10000m^2)

A=2.42 hectares

7 0

2 years ago

Sam scored 80% on Part A of a math test and 92% on part B of the math test. His total mark on the test was 63. The total possibl

Nataly_w [17]

Answer:

0.80A + 0.92B = 63 .....1

A + B = 75 ......2

Step-by-step explanation:

Let A and B represent the total possible score in part A and B respectively;

Analysing each sentence of the question;

Sam scored 80% on Part A of a math test and 92% on part B of the math test. His total mark on the test was 63

80% of A + 92% of B = 63

0.80A + 0.92B = 63 ......1

The total possible marks for the test was 75;

A + B = 75 .....2

So, equation 1 and 2 provides a set of simultaneous equations that can be used to represent and solve the situation.

Solving the simultaneous equations, we will arrive at;

Part A = 50

Part B = 25

6 0

3 years ago