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Solnce55 [7]
3 years ago
13

HELP ME PLS Which of these figures has rotational symmetry?

Mathematics
2 answers:
dsp733 years ago
7 0
If you want to find out on others like this rotating the paper and see with one looks the same as when it was right ways
The answer is A
Vlada [557]3 years ago
3 0

Answer:

A

Step-by-step explanation:

When you rotate the shape it will be the same as it was before .

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Which equation represents a line perpendicular to the line shown on the graph?
Vadim26 [7]

Answer:

See description below.

Step-by-step explanation:

To choose the correct equation, find the slope of the line on the graph. Identify two points on the line. Then subtract to find their rate of change using the slope formula.

m=\frac{y_2-y_1}{x_2-x_1}

When you know the slope, find the negative reciprocal. For example, if the slope is 2/1 then the negative reciprocal is -1/2. This is the slope of a perpendicular line to a line with slope 2. Choose the equation which has this same slope.

Example:

y = 2x -1

y= -1/2 +5

4 0
3 years ago
Help ASAP ILL GIVE 10 POITNS TO ANYONE THAT WILL HELP
DIA [1.3K]
End answer is five hundred and 6

3 0
2 years ago
Read 2 more answers
An English professor assigns letter grades on a test according to the following scheme. A: Top 15% of scores B: Scores below the
lisabon 2012 [21]

Answer:

59 to 66

Step-by-step explanation:

Mean test scores = u = 74.2

Standard Deviation = \sigma = 9.6

According to the given data, following is the range of grades:

Grade A: 85% to 100%

Grade B: 55% to 85%

Grade C: 19% to 55%

Grade D: 6% to 19%

Grade F: 0% to 6%

So, the grade D will be given to the students from 6% to 19% scores. We can convert these percentages to numerical limits using the z scores. First we need to to identify the corresponding z scores of these limits.

6% to 19% in decimal form would be 0.06 to 0.19. Corresponding z score for  0.06 is -1.56 and that for 0.19 is -0.88 (From the z table)

The formula for z score is:

z=\frac{x-u}{\sigma}

For z = -1.56, we get:

-1.56=\frac{x-74.2}{9.6}\\\\ x = 59

For z = -0.88, we get:

-0.88=\frac{x-74.2}{9.6}\\\\ x = 66

Therefore, a numerical limits for a D grade would be from 59 to 66 (rounded to nearest whole numbers)

7 0
3 years ago
Find the quotient: 18,198 / 27 518 608 674 689
gregori [183]
18,198 / 27 = 674 <==
5 0
2 years ago
-12=3-2k-3k<br><br> Solving multi-step equations<br><br> I give Brainliest!
inessss [21]

Answer:

k = 3

Step-by-step explanation:

-12 = 3 - 2k - 3k

-12 = 3 - 5k

5k = 15

k = 3

6 0
3 years ago
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