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Anna [14]
3 years ago
5

How many points are used to define a plane? A. zero B. one C. two D. three

Mathematics
2 answers:
Ivan3 years ago
6 0
The answer will be D. three
slamgirl [31]3 years ago
5 0

Answer:

it will be D

Step-by-step explanation:

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I need to know how to dos these problems? Can you explain how to do them?
drek231 [11]
The answer for 4 is 8(3+5) 

6 0
3 years ago
Read 2 more answers
I think of a number, multiply it by three, and add fout I get twenty two.
m_a_m_a [10]

Answer:

X times 3 + 4 =22

X=6

Step-by-step explanation:

22-4=18

18/3=6

7 0
3 years ago
Find the exterior angle of angle c.
Bingel [31]

Answer:

Step-by-step explanation:

This triangle is a polygon. By definition, all the exterior angles of ANY polygon add up to equal 360 degrees. So we add up all the exterior angles and solve for x. That's the first step.

7x - 2 + 9x - 31 + 4x + 33 = 360

Combining like terms gives us

20x + 0 = 360 or simply

20x = 360 so

x = 18

In order to find the value of the angle exterior to angle C, we sub 18 in for x:

7(18) - 2 = 124

4 0
3 years ago
The number is even. It is nit divisible by 3. It is not divisible by 5. It is not greater than 9^2. Is it not less than 8^2. Wha
TEA [102]

Answer:

64, 68, 74, 76

Step-by-step explanation:

Ok so in a confusing way, the last two statements are telling you that the number is greater than 8^2, which is 64, and the number is less that 9^2, which is 81.

The number has to be even, so I will list the even numbers between those two numbers:

64, 66, 68, 70, 72, 74, 76, 78, 80.

It cannot be divisible by 3, which rules out 66, 72, 78

64, 68, 70, 74, 76, 80 remains

It cannot be divisible by 5, which rules out 70 and 80

64, 68, 74, 76  are the possible answers,

*Note: I believe I did this right, but because of the tricky wording of the last two statements, 64 may not be included.

4 0
3 years ago
Please someone help me with this question below i am really stuck.
o-na [289]

9514 1404 393

Answer:

  £59.25

Step-by-step explanation:

The tricky part here is finding the height of the trapezoid shape of the lawn. You will notice the difference in lengths of the parallel edges is 20-12 = 8 meters. This means you can use the Pythagorean theorem to find the missing height, as it is the second leg of a right triangle with one leg 8 and hypotenuse 17.

  h^2 = 17^2 -8^2 = 289 -64 = 225

  h = √225 = 15

So, the lawn's shape is a trapezoid with bases 20 and 12 and height 15. These can go into the area formula ...

  A = 1/2(b1 +b2)h

  A = 1/2(20 +12)(15) = 240 . . . . . . square meters

__

That area is 2.4 times 100 square meters. That means 2.4 cans of weedkiller are all that are needed. If we can only purchase whole cans, then we need to purchase 3 cans of weedkiller, for a cost of ...

  £19.75 × 3 = £59.25

The cost of the cans of weedkiller needed will be £59.25.

7 0
2 years ago
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