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kumpel [21]
3 years ago
5

Two chords, AC and DE, intersect inside of circle O at point X. AX=15 cm, CX= 12 cm, and EX= 21 cm. Find DE​

Mathematics
1 answer:
pshichka [43]3 years ago
7 0

Answer:

Do you have a picture or something?

Step-by-step explanation:

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lianna [129]

Answer:

-5.1

Step-by-step explanation:

Subtract 5.1 from both sides.

4 0
3 years ago
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Write the equation of a line:
valkas [14]

Answer:

y = -½x + 4

Step-by-step explanation:

1 = -½[6] + b

-3

4 = b

2y + x = 4 →2y = -x + 4 >> y = -½x + 2 [parallel to the above equation]

Parallel lines have SIMILAR <em>RATE</em><em> </em><em>OF</em><em> </em><em>CHANGES</em><em> </em>[<em>SLOPES</em>].

I am joyous to assist you anytime.

**I have a video that explains how to find the y-intercept, Perpendicular Equations, and Parallel Equations. I encourage you to watch the video to gain alot more knowledge from it, so you can better understand the concept. It is the second longest.

5 0
3 years ago
Which of the following tables corresponds to the equation below?
Tresset [83]
Answer:
Option b

Explanation:
To solve this problem you need to plug in the values provided and determine if they make the equation true.

Step 1 - Plug in the values for x and y given in option a. Determine if all values make the equation true.

y = 3x + 1
1 = 3(0) + 1
1 = 1 {true}

y = 3x + 1
9 = 3(2) + 1
9 = 7 {not true}

Since the second ordered pair does not make the equation true, this is not the correct answer.

Step 2 - Plug in the values for x and y given in option b. Determine if all values make the equation true.

y = 3x + 1
1 = 3(0) + 1
1 = 1 {true}

y = 3x + 1
7 = 3(2) + 1
7 = 7 {true}

y = 3x + 1
19 = 3(6) + 1
19 = 19 {true}

Since all of the ordered pairs given in Option b make the equation true, this is the correct answer. To double check, you can do the same process for option c to make sure it is not true.

Step 3 - (Optional step) Plug in the values for x and y given in option c. Determine if all values make the equation true.

y = 3x + 1
-1 = 3(0) + 1
-1 = 1 {not true}

Since the first ordered pair given does not make the equation true, this is not the correct answer.
7 0
3 years ago
Cylinder A has radius r and height h as shown in the diagram. Cylinder B has radius 4r and height 4h. How many times greater is
svetlana [45]

Answer:

  • The surface area of Cylinder B is 16 times the surface area of Cylinder A

Step-by-step explanation:

<u>Note</u>: <em>It is assumed we are looking at  the total surface area (but the answer would be same for both cases)</em>

<h3>Given</h3>

  • Cylinders A with radius - r, height - h,
  • Cylinder B with radius - 4r, height -  4h.

<h3>To find </h3>

  • The ratio of total surface areas of cylinder B to A

<h3>Solution</h3>

Total surface area of cylinder A is:

  • S_A = 2\pi  r(h + r)

Total surface area of cylinder B is:

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Find the ratio of areas:

  • \cfrac{S_B}{S_A} =\cfrac{32\pi(r+h)}{2\pi(r+h)} =16

3 0
3 years ago
these cards are put int a bag. One card is chosen at random. (1,2,3,4,5,6,7,8,9,10) a.) what is the probability of choosing the
Rama09 [41]

Answer:

There are 10 cards in total.

The probability of choosing card with the number 4 is 1/10.

The probability of choosing card with the number 1 is 2/10 = 1/5 (since there are 2 cards with the digit 1 - 1, 10)

5 0
4 years ago
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