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3 years ago

A phone is 35 percent off which is now worth 78 pounds what was the original price

Mathematics

1 answer:

Black_prince [1.1K]3 years ago

7 0

Answer:

120 pounds

Step-by-step explanation:

65% of y= 78 pounds

$\frac{65}{100}$ × y = 78 pounds

65y = 78 × 100=7800

y= 7800/65= 120 pounds

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Simplify the following 6(1/2+1/3)

gogolik [260]

Answer:

Step-by-step explanation:

use the distributive property

6 * 1/2 = 3

6 * 1/3 = 2

3 + 2 = 5

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-Lil G

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3 years ago

Find the median of the data in the box plot below.

Dmitry_Shevchenko [17]

Median is just the middle number. If you put all the numbers in order from least to greatest:
4,5,6,7,8,9,10
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2 years ago

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In the expression 2x + 3 , the two is called

melamori03 [73]

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4 years ago

Flying lessons cost $645 for an 8-hour course and $1425 for a 20-hour course. Both prices include a fixed insurance fee. a. Writ

Softa [21]

Answer:

Check Explanation

Step-by-step explanation:

a) Let the fixed insurance fee be A and the rate charged per hour be b

The equation for the cost, C, of flying lessons in terms of length, h, of the course in hours is given by

C = A + bh

b) The two points (h, C) given in the question are (8, 645) and (20, 1425)

c) To find the equation of the line passing through these two points,

equation of a straight line iS given by

y = mx + c (where m = slope of the line and c = intercept)

denoting hours (h) as x and Cost (C) as y

645 = 8m + c

1425 = 20m + c

Solving this simultaneous equation,

m = 65 dollars/hour and c = 125 dollars

The equation of the straight line is

y = 65x + 125

Written in the variables of the question,

C = 65h + 125

This shows that the fixed insurance fee, called A in part (a) = $125

And the rate charged per hour called b in part (a) = $65/hour

Hope this Helps!!!

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3 years ago

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A surfer recorded the maximum wave height each day at the beach for 10 days. The results are shown in this dot plot.

weqwewe [10]

Answer:

The correct option is 3. The 10 foot wave is an outlier.

Step-by-step explanation:

The height of waves for 10 days are shown in the given figure.

From the figure it is noticed that the height of wave length is 2 for 5 days, 3 for 4 days and 10 for 1 day.

If arrange the height of wave in ascending order we get

$2,2,2,2,2,3,3,3,3,10$

Total number of observation is 10.

$Q_1=\frac{n}{4}\text{th term}$

$Q_1=\frac{10}{4}\text{th term}=2.5\text{th term}$

It means Q₁ is the average of second and third term.

$Q_1=\frac{2+2}{2}=2$

$Q_3=\frac{3n}{4}\text{th term}$

$Q_3=\frac{3(10)}{4}\text{th term}=7.5\text{th term}$

It means Q₃ is the average of seventh and eight th term.

$Q_3=\frac{3+3}{2}=3$

Interquartile range is the difference between Q₃ and Q₁.

$I.Q.=Q_3-Q_1=3-2=1$

$Q_1-1.5(I.Q.)=2-1.5=0.5$

$Q_3+1.5(I.Q.)=3+1.5=4.5$

Therefore the data which lies outsides $[0.5,4.5]$ are outliers of the data.

Thus, the correct option is 3. The 10 foot wave is an outlier.

5 0

3 years ago