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3 years ago

Which of these data sets is symmetrical?

Mathematics

1 answer:

Elanso [62]3 years ago

6 0

Answer:

c is the correct answer I'm pretty sure. it is equal to 32 when adding both sides

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Could you please answer Number 2? This is for geometry

katrin [286]

Answer: 108 degrees

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Explanation:

Angle ABC is given to be 90 degrees. By the converse of Thales Theorem, we know that AC is a diameter of the circle.
If we draw a line from A to C, it will pass through the center of the circle.

Therefore, arc AC is 180 degrees as this is half the distance around the circle.

minor arc AD = 72
minor arc CD = x
(minor arc AD) + (minor arc CD) = arc AC
72+x = 180
72+x-72 = 180-72
x = 108

minor arc CD is 108 degrees

7 0

4 years ago

An insect is 3.5 millimeters long. Which expression finds the length of the insect in decimeters? Use the metric table to help a

rewona [7]

Answer:

The length of the insect in decimeters is: 0.035 decimeters

Step-by-step explanation:

The metric table help us to know:

1 decimeter =100 millimeters

To answer the question we need to know how many decimeters are 3.5 millimeters, so:

$3.5 millimeters*\frac{1 decimeter}{100 millimeters}= 0.035 decimeters$

The length of the insect in decimeters is: 0.035 decimeters

6 0

3 years ago

Read 2 more answers

Mani,James, and Isidro shared 1/2 of a pie. Which fraction of the whole pie did each of them receive?

bija089 [108]

Answer:

1/6

Step-by-step explanation:

$\frac{1}{2}$ /3= 1/6

3 0

3 years ago

7/18 divided by 5/6. For a practice buddy

kenny6666 [7]

Answer:

0.46666666666

Step-by-step explanation:

i tried

7 0

3 years ago

The area of a right triangle is sixty square centimetres. Its base is one centimetre less than twice its height. If the base and

NemiM [27]

Answer:

5. None of the above

Step-by-step explanation:

We have this information:

A = 60 cm2

b = 2*h - 1

Let's find out b and h:

The equation of the are of a triangle is A = (b*h)/2, if we replace it with our information, we have

$60 = ((2*h - 1) * h)/2\\ 120 = 2*h^2 - h\\ 0 = 2*h^2 - h - 120$

Let's find h with the quadratic formula:

$\fbox {Quadratic formula:} \frac{-b\pm\sqrt{b^2-4ac}}{2a}$

$h = \frac{-(-1)\pm\sqrt{(-1)^2-4*2*(-120)}}{2*2} = \frac{1\pm\sqrt{961}}{4} = \frac{1\pm\ 31}{4}$

h = 8 or h = -7.5

But h represents the height of the triangle, so it has to be a positive number, that's h = 8.

If we replace this in the equation we had for b, we have that b = 2*8 - 1 = 15.

Now we can calculate the hypotenuse with the Pythagorean equation

$\fbox {Pythagorean equation:}$ <em>The square of the length of the hypotenuse (the side opposite the right angle) of a right triangle is equal to the sum of the squares of the two legs (the two sides that meet at a right angle). </em>