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3 years ago

The figure shows five points. A point has been translated right and up.

Mathematics

2 answers:

Natali5045456 [20]3 years ago

6 0

Answer:

A,C,E

Step-by-step explanation:

levacccp [35]3 years ago

4 0

Answer:

The answer is Point D could be the image of B, Point E could be the image of C, and Point E could be the image of B.

Step-by-step explanation: The clue is going right and up. We could use this clue and know that the answer is correct. For example, if you start with the point B and move right, and go up we can find that both point E and D can all be the image of B.

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Online jewelry sales have increased steadily over the last 10 years. In 2003, sales were approximately 2 billion dollars, and in

KiRa [710]

Answer: <em>(i) The unit rate at which online jewelry sales have been increasing is 1.33 billion dollars per year. </em>

<em>(ii) The online jewelry sales in 2019 will be 191.7 billion dollars.</em>

Step-by-step explanation:

In 2003, sales were approximately 2 billion dollars and in 2010, they were approximately 14.8 billion dollars.

(i) If $x$ is the number of years after 2003 and $y$ is the amount of sales....

then the equation will be: $y= ab^x$ , where $a$ is the initial amount and $b$ is the growth rate.

for 2003, $x=0$ and for 2010, $x=7$

So, the two points in form of (x, y) will be: $(0,2)$ and $(7,14.8)$

Now plugging these two points int the above equation....

$2= ab^0\\ \\ a= 2\\ \\ and\\ \\ 14.8=ab^7\\ \\ 14.8=2*b^7\\ \\ b^7=7.4\\ \\b= \sqrt[7]{7.4}=1.3309.... \approx 1.33$

Thus, the online jewelry sales have been increasing at a rate of 1.33 billion dollars per year.

(ii) As we got $a=2$ and $b=1.33$ , so the equation will be now: $y= 2(1.33)^x$

<u>For the year 2019, the value of</u> $x$ will be: (2019-2003) = 16

So plugging $x=16$ into the above equation, we will get.....

$y=2(1.33)^16\\ \\ y=191.7150... \approx 191.7$

<em>(Rounded to the nearest tenth)</em>

Thus, the online jewelry sales in 2019 will be 191.7 billion dollars.

6 0

4 years ago

When integer x is multiplied by 3, the result is greater than 10 but less than 14?

meriva

The answer is 4. If you multiply x by 3 you get 9 but if you multiply it by 5 you get 15. However, 3*4=12, which is greater than 10 but less than 14.

6 0

3 years ago

Two points are located at (2,3) and (8,−5). Complete the equations below to show how you can use the Pythagorean theorem to find

ad-work [718]

Answer:

<h2>first blank:</h2><h2>c=sqrt(a^2+b^2)</h2><h2>second blank:</h2><h2>c=sqrt((8-2)^2+(-5-3)^2)</h2><h2 />

Step-by-step explanation:

c^2=a^2+b^2

sqrt(c^2)=sqrt(a^2+b^2)

c=sqrt(a^2+b^2)

c=sqrt((x2-x1)^2+(y2-y1)^2)

c=sqrt((8-2)^2+(-5-3)^2)

7 0

3 years ago

Scores on the GRE (Graduate Record Examination) are normally distributed with a mean of 513 and a standard deviation of 82. Use

Trava [24]

Answer:

Note that we need calculate the scores between the mean ( $\mu=513$ ) and the mean plus 3 times the standard deviation. It is 3 times since the distance between the values given (513 and 759) divided by the standard deviation is 3 ( $\frac{759-513}{82}=3$ )

So the rule say that 99.7% of data is between $\mu - 3\sigma$ and $\mu + 3\sigma$ , as it is a normal distribution half of 99.7% is between $\mu$ and $\mu+3\sigma$ . Hence 49.85% of people score between 513 and 759.

4 0

3 years ago

Using a tree diagram and assuming that all options are equally likely, what is the probability of using sprinkles?

tester [92]

Some are said more than once but they is 10 different choices together so it’s be ‘1/10 probability’

6 0

3 years ago