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3 years ago

Help me please with my question.

Mathematics

1 answer:

Hunter-Best [27]3 years ago

3 0

Domain:(-infinity,infinity),{x|x€R}
Range:(0,infinity),{y|y>0}

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Expresss 8 2/7 as a %

Darya [45]

828.57%

Step-by-step explanation:

8 0

3 years ago

In 2007, the value of a house was £119,995 From 2007 to 2018, house prices decreased by 9.4%. How much has the value of the hous

labwork [276]

Answer: £11,279.53

Step-by-step explanation:

Given

In 2007, the price of the house was £119,995

Price decreases by 9.4%

$\Rightarrow \text{Current Price}=\text{Old Price}-9.4\%\text{Old Price}\\\Rightarrow 119,995-9.4\%\ \text{of}\ 119,995\\\Rightarrow 119,995(1-0.094)=119,995\times 0.906\\\Rightarrow 108,715.47$

Price decreased by 119,995-108,715.47=£11,279.53

3 0

3 years ago

Assume that there are three airlines from which to choose, each with a number of flights per day, and an on-time percentage show

Rom4ik [11]

1.) The probability that the traveler flew on East-West Air is 4/(4 + 3 + 6) = 4/13 = 31%

2.) The probability that the traveler flew on Air One is 3/13 = 23%

3.) The probability that the traveler flew on International Air is 6/13 = 46%

5 0

3 years ago

Consider the following: A medical researcher wants to determine the effects of pH (a measure of alkalinity or acidity, with pure

natita [175]

Answer:

See below

Step-by-step explanation:

<h3>Continuation of the question</h3>

Data in the table:

PH 4 5 6 7 8 9 10 11

Bacteria 116 120 131 136 141 151 148 163

Create a scatter plot to represent the data: Based on the data and your scatter plot, what do you think a good linear function would be to represent the data?

<h3>Solution</h3>

See attached for scatter plot

We can see the chart is close to linear function. Let's build one based on data in the table

The line will be in the form of:

y = mx + b

If we use two points and get the equation

(4, 116) and (8, 141)

Finding the slope:

m = (141-116)/(8-4) = 25/4 = 6.25

Then, finding y-intercept:

116 = 6.25*4 + b
b = 116 - 25 = 91

So the line is:

y = 6.25x + 91

Note: This is approximate best fit graph and it is attached as well. Exact formula for the line is built by using different method and is very close to the one above

4 0

3 years ago

Find the percent increase round to the nearest percent From 42 acres to 72 acres

Finger [1]

Answer:

58.333333 percent

Step-by-step explanation:

58 percent

I took 42 divided by 72 times 100

5 0

3 years ago