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NISA [10]
3 years ago
15

1)The square shown has a perimeter of 32 units. The square is rotated about line k. 

Mathematics
2 answers:
monitta3 years ago
7 0

Answer:

D. a cylinder with a circumference of about 50 units

Step-by-step explanation:

I just took the test on Edg, this is the actual answer. :) Good luck!

natali 33 [55]3 years ago
5 0
1. The perimeter of the square is 32 units, means each side is 32/4=8 units.

rotating the square about line k forms a cylinder with base radius equal to 8 units, and height equal to 8 units. (check the first picture)

the circumference of the base is C=2πR=16π units=16*3.14 units = 50.24 units.

Answer:  <span>a cylinder with a circumference of about 50 units

2. 
Rotating the equilateral triangle around line a, produces a cone with base radius equal to half of one side of the triangle, that is r=10mm.

(check picture 2)

The circumference is </span>C = 2πr=<span>C = 2*3.14*10=62.8 mm

Answer: </span><span>a cone with a base circumference of about 63 mm</span>

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bagirrra123 [75]

Answer:

1.8

Step-by-step explanation:

1 \frac{2}{25}  = 1.08 \\ 1.08 \div 0.6 = 1.8

4 0
3 years ago
1 Point
Ivahew [28]

Answer:

The answer is D

Step-by-step explanation:

You can find it by expanding the equation in the form of y = mx + b :

y - 4 = 3(x + 1)

y - 4 = 3x + 3

y = 3x + 3 + 4

y = 3x + 7

Then, looking at the equation "b" is a y-intercept. The line that touch/passes through y-axis is called <u>y</u><u>-</u><u>i</u><u>n</u><u>t</u><u>e</u><u>r</u><u>c</u><u>e</u><u>p</u><u>t</u>. From the equation, we know that 7 is the y-intercept.

By looking at the diagram, only Graph D is suitable for this equation because the line has touches 7 at y-axis.

5 0
3 years ago
Can someone please help?
Alika [10]

Answer:

A. mean 71.33, median 86, mode 90 90 100 100, range 55

B. mean 79.41, median 36.5, mode 90, range 60

c. mean 73.16, median 2, mode 75 75 80 80, range 45

Step-by-step explanation:

mean is the average so add all numbers then divide by the number of number

mode is the number that is often seen

range subtract the smallest from largest or the other way around

median the middle number when lined all number from less to biggest  

4 0
3 years ago
A laboratory is testing a product by heating or cooling it at different rates. The table shows the results of four tests. Drag a
Fynjy0 [20]

Answer:

See the picture

Step-by-step explanation:

The answer is attached

3 0
3 years ago
I need help with all three please help!
denis-greek [22]

Answer:

c

a

b

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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