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3 years ago

Help plz:)))I’ll mark u Brainliest

Mathematics

1 answer:

11111nata11111 [884]3 years ago

5 0

<h3>Answer: 66.48</h3>

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Explanation:

The formula we'll use to find the surface area is:

SA = 4*pi*r^2

In this case, the radius is r = 2.3 meters

SA = 4*pi*r^2

SA = 4*pi*(2.3)^2

SA = 66.47610054996

SA = 66.48 square m

You'll type the expression you see for step 2 into your calculator to get the result of step 3. The result is approximate. Let your calculator handle the decimal digits of pi as your teacher instructs. The last step is us rounding to two decimal places. The units for the surface area are in square meters, because we can effectively unwrap the outer surface (think of it like unwrapping a present) to lay it out flat.

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Find the coordinates of the image of point R(3, -5) rotated 180 degrees about the origin.

kolbaska11 [484]

180 degrees means that the new x=-x and the new y=-y so
x=3 and y=-5 is orignal
new is -3 and 5

so new oint is

A(-3,5)

6 0

2 years ago

HELP PLEASE!! WILL GIVE BRAINLIEST!!!

muminat

The slope is 5/7

Step-by-step explanation:

When you find slope you need to find both points and use the ordered pairs and subtract y1 - y2 and x2 - x1 and then you get your slope which is 5/7

sorry im bad at explaining

6 0

2 years ago

If a new data point at 12 is added to the graph , which will be true ?

Orlov [11]

Answer:

3. The mean will increase more than median, but both will increase.

Step-by-step explanation:

We have been given a dot plot. We are asked to find the true statement, if a new data point at 12 is added to our given dot plot.

Since we know that an large valued outlier affects mean more than median, so mean will increase more than median.

Let us check this using our given information. Our data set before adding 12 is:

1, 2, 2, 2, 3, 4, 4, 4, 5.

We can see that our data set has odd number (9) of data points, so median will be the value of 5th term, that is 3.

$\text{Mean}=\frac{1+2+2+2+3+4+4+4+5}{9}$

$\text{Mean}=\frac{27}{9}=3$

Therefore, mean of our data set is 3.

Upon adding a data point at 12, our new data set will be:

1, 2, 2, 2, 3, 4, 4, 4, 5, 12.

Now our data set has 10 terms, so median will be the average of 5th and 6th term.

$\text{Median}=\frac{3+4}{2}$

$\text{Median}=\frac{7}{2}=3.5$

Therefore, the median of new data set will be 3.5.

$\text{Mean}=\frac{1+2+2+2+3+4+4+4+5+12}{10}$

$\text{Mean}=\frac{39}{10}$

$\text{Mean}=3.9$

Therefore, mean of new data set will be 3.9.

Upon looking at our given statements we can see that 3rd statement is true as mean and median both increased after adding 12 to our data set, but mean increased more that median. Mean and median before adding 12 was 3; but after adding 12 median became 3.5, while mean became 3.9 (which is greater than mean).

3 0

2 years ago

Read 2 more answers

(Source: Aragon, Catherine A. and Samara Janleen D. Genova. Interactive Mathematics 8. Manila Innovative Educational Materials,

Mrac [35]

The GCF of numbers or expressions is the highest factor, common in both numbers or expressions.

The GCF of $24x^2y$ and $34x^2y$ is $2x^2y$