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vodka [1.7K]
3 years ago
7

(d)find the hcf of 21 and 84​

Mathematics
2 answers:
Oxana [17]3 years ago
7 0

I m not sure about my ans.

nata0808 [166]3 years ago
6 0

Step-by-step explanation:

21 = 3 \times 7 \\  \\ 84 = 2 \times 2 \times 3 \times 7 \\  \\ common \: factors \:  = 3  \: and \: 7 \\  \\  \therefore \: hcf \: of \: 21 \: and \: 84 = 3 \times 7 = 21

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What does x equal???????? please help
Sholpan [36]
<h3>Answer: x = 61</h3>

=============================================

Explanation:

The angle x and the 29 degree angle combine to form a 90 degree angle. This is because the square maker on the left has that angle at 90 degrees, and all of the angles combine to form 180. So 180-90 = 90 is the left over amount.

Add up x and 29 to get 90

x+29 = 90

Solve for x by subtracting 29 from both sides

x+29-29 = 90-29

x+0 = 61

x = 61

--------------

An alternative is to solve the equation below for x

x+29+90 = 180 ... see note below

x+119 = 180

x+119-119 = 180-119 ... subtract 119 from both sides

x = 61

we get the same answer

note: this equation turns into x+29 = 90 if you subtracted 90 from both sides

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3 years ago
The diameter of a circle has endpoints P(-12, -4) and Q(6, 12).
nexus9112 [7]

9514 1404 393

Answer:

  (x +3)² +(y -4)² = 145

Step-by-step explanation:

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  A = (P +Q)/2

  A = ((-12, -4) +(6, 12))/2 = (-12+6, -4+12)/2 = (-6, 8)/2

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The equation of the circle for some radius r is ...

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Then the equation of the circle is ...

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3 years ago
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Alexus [3.1K]
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So the slope is 4.5
7 0
3 years ago
Hi y’all please help me !
mestny [16]

Answer:

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Step-by-step explanation:

They are vertical angles, vertical angles always have the same measurement. example below

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6 0
2 years ago
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Step-by-step explanation:

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