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Leni [432]
2 years ago
11

As an estimation we are told £3 is €4.

Mathematics
1 answer:
NeX [460]2 years ago
6 0

Answer:

25.60 €.

Step-by-step explanation:

£3 is €4

So £1 is €4/3

and £19.29 = 19.20 * 4/3

= 25.60 €

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Find the measures of center for following. Data Frequency 30 - 34 1 35 - 39 0 40 - 44 3 45 - 49 7 50 - 54 5 55 - 59 10 60 - 64 1
dalvyx [7]

Answer: the mode is 67.2

Step-by-step explanation:

Given that;

Data               Frequency

30 - 34                 1

35 - 39                0

40 - 44                3

45 - 49                7

50 - 54                5

55 - 59               10

60 - 64               10

65 - 69              21

70 - 74               12

Mode = ?

we know that mode is the number that has the highest number of appearance of frequency, so in this case, the data group that has the highest frequency (21) is 65 - 69  

Lower class boundary of the modal group; L = 65

Frequency of the group before the modal group; Fm-1 = 10

Frequency of the modal group; Fm = 21

Frequency of the group after the modal group; Fm+1 = 12

Group width; G = 4

Now using the formula

Mode = L + [ (Fm - Fm-1) / ( (Fm - Fm-1) + (Fm - Fm+1) ) ] × W

so we substitute

Mode = 65 + [ (21 - 10) / ( (21 - 10) + (21 - 12) ) ] × 4

= 65 + [ 11 / 20] × 4

= 65 + 2.2

= 67.2    

Therefore the mode is 67.2

3 0
2 years ago
Eliminate the parameter from x(t)=t^2+5 and y(t)=t^2-4. Which of the following sketches results?
algol [13]

Answer:

y = ( √ x − 5 , − √ x − 5 ) 2 − 4

Step by step by Explanation:

Solve for t by taking the square root of both sides of the equation.

4 0
3 years ago
The price of a four-year dinner was $100 two decades ago. A report says that a dinner is 250% of what it was 20 years ago, how m
Leviafan [203]

The original price of a shirt was $20. It was decreased to $15 . What is the percent decrease of the price of this shirt.


Solution to Problem 1:


The absolute decrease is


20 - 15 = $5


The percent decrease is the absolute decrease divided by the the original price (part/whole).


percent decease = 5 / 20 = 0.25


Multiply and divide 0.25 to obtain percent.


percent decease = 0.25 = 0.25 * 100 / 100 = 25 / 100 = 25%


Problem 2:


Mary has a monthly salary of $1200. She spends $280 per month on food. What percent of her monthly salary does she spend on food?


Solution to Problem 2:


The part of her salary that is spent on food is $280 out of her monthly salary of $1200


percent = part / whole = 280 / 1200 = 0.23 (rounded to 2 decimal places)


Multiply and divide 0.23 by 100 to convert in percent


percent = 0.23 * 100 / 100 = 23 / 100 = 23%


Problem 3:


The price of a pair of trousers was decreased by 22% to $30. What was the original price of the trousers?


Solution to Problem 3:


Let x be the original price and y be the absolute decrease. If the price was decreased to $30, then


x - y = 30


y is given by


y = 22% of x = (22 / 100) * x = 0.22 x


Substitute y by 0.22 x in the equation x - y = 30 and solve for x which the original price.


x - 0.22 x = 30


0.78 x = 30


x = $38.5


Check the solution to this problem by reducing the origonal price found $38.5 by 22% and see if it gives $30.


Problem 4:


The price of an item changed from $120 to $100. Then later the price decreased again from $100 to $80. Which of the two decreases was larger in percentage term?


Solution to Problem 4:


First decrease in percent


part / whole = (120 - 100) / 120 = 0.17 = 17%


Second decrease in percent


part / whole = (100 - 80) / 100 = 0.20 = 20%

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same conccepttttt

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3 years ago
Cuanto 5 entre 6'658
alexandr1967 [171]

Answer:

m m.k;llm

]lp;k

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Step-by-step explanation:

3 0
3 years ago
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What is 170% of 520? Round to the nearest hundredth (if necessary).
Anvisha [2.4K]
170% of 520
Is 170%*520
Which is 884
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3 years ago
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