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frez [133]
2 years ago
15

What is the angle of angle A in degrees

Mathematics
2 answers:
Margaret [11]2 years ago
7 0
Answer:
120°

Step-by-step explanation:
Triangle ABC is an isosceles triangle, which means ∠C = ∠B.
And the total degrees of a triangles inner angles is 180°.
So to find ∠A all you do is 180° - (∠C + ∠B).
∠C + ∠B would be 30+30 which is 60°
And 180° - 60° is 120°.

Hope this helps!
-BARSIC- [3]2 years ago
3 0

\huge\fbox{Answer ☘}

From the figure , it is quite clear that the sides AB and AC have the same measure , i.e. , 8 units .

we know that ,

angles opposite to equal sides are equal.

therefore ,

∠B = ∠C = 30°

Now ,

angle sum property of a ∆ states that the sum of all the angles of a triangle equals 180°

thus ,

∠A + ∠B + ∠C = 180° \\  \\ ∠A + 30° + 30° = 180° \\  \\ ∠A + 60° = 180° \\  \\ ∠A = 180° - 60° \\  \\ ∠A = 120°

therefore ,

option ( c ) 120° is correct .

hope helpful ~

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G(x) = 3x 
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3 years ago
A bacteria culture starts with 1000 bacteria and the number doubles every 40 minutes. (a) find a formula for the number of bacte
vfiekz [6]

The formula for the number of bacteria at time t is 1000 x (2^t).

The number of bacteria after one hour is 2828

The number of minutes for there to be 50,000 bacteria is 324 minutes.

<h3>What is the number of bacteria after 1 hour?
</h3>

The exponential function that can be used to determine the number of bacteria with the passage of time is:

initial population x (rate of increase)^t

1000 x (2^t).

Population after 1 hour : 1000 x 2^(60/40) = 2828

Time when there would be 50,000 bacteria : In(FV / PV) / r

Where:

  • FV = future bacteria population = 50,000
  • PV = present bacteria population = 1000
  • r = rate of increase = 100%

In (50,000 / 1000)

In 50 / 1  = 3.91 hours x 60 = 324 minutes

To learn more about exponential functions, please check: brainly.com/question/26331578

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5 0
2 years ago
Given the following system of equations: −x + y = 2 2x + 4y = 32 What action was completed to create this new equivalent system
tiny-mole [99]

Answer:

you just need to devide by 2 the second equation

Step-by-step explanation:

  • -x + y = 2 (you leave it as it is)

  • 2x + 4y =32 => 2x/2 +4y/2 = 32/2

=> x + 2y =16

we can devide or multiply in an equation by any number we want, as long as we do it to every term.

6 0
3 years ago
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Ann [662]
28 times 5 because volume= length times width times height. Brainliest?
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2 years ago
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What is the value of X?
andrezito [222]

Solution:

<u>Note that:</u>

  • 3x + 50 = 6x - 10 (Vertically opposite angles)

Simplify the equation to find x.

<u>Add 10 both sides.</u>

  • 3x + 50 = 6x - 10
  • => 3x + 50 + 10 = 6x - 10 + 10
  • => 3x + 60 = 6x

<u>Subtract 3x both sides.</u>

  • 3x + 60 = 6x
  • => 3x - 3x + 60 = 6x - 3x
  • => 60 = 3x

<u>Divide 3 both sides.</u>

  • 60 = 3x
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6 0
3 years ago
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