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3 years ago

14

What is the missing angle of a triangle if one angle is 20 and the other is x ?

1 answer:

exis [7]3 years ago

4 0

Just like regular numbers, angles can be added to obtain a sum, perhaps for the purpose of determining the measure of an unknown angle. Sometimes we can determine a missing angle because we know that the sum must be a certain value. Remember -- the sum of the degree measures of angles in any triangle equals 180 degrees. Below is a picture of triangle ABC, where angle A = 60 degrees, angle B = 50 degrees and angle C = 70 degrees.
The angles of this triangle are 50, 60, and 70 degrees.

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Write a verbal expression for 2(n + 9)

strojnjashka [21]

Answer:

Two times the sum of a number and nine.

Step-by-step explanation:

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3 years ago

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Mademuasel [1]

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4 years ago

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kvasek [131]

<h2>Answer:</h2>

option (c) 2

<h2>Step-by-step explanation:</h2>

<u>First step</u> : Multiply

<u>Second step</u> : Add

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2 years ago

Dead leaves accumulate on the ground in a forest at a rate of 3 grams per square centimeter per year. at the same time, these le

slavikrds [6]

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3 years ago

Two factory plants are making tv panels. Yesterday, plant A produced 2000 panels. Ten percent of the panels from plant A and 3%

Nastasia [14]

Let <em>B</em> be the amount of panels that plant B produced.

The total amount of defective panels from plant A is:

$\frac{10}{100}\times2000=200$

The total amount of defective panels from plant B is:

$\frac{3}{100}\times B=0.03B$

The total amount of panels produced by plants A and B is:

$2000+B$

Since 5% of the total of panels is defective, the total amount of defective panels is:

$\begin{gathered} \frac{5}{100}\times(2000+B) \\ =100+0.05B \end{gathered}$

On the other hand, the total amount of defective panels is the sum of the defective panels from plants A and B:

$200+0.03B$

Since these two expressions correspond to the total amount of defective panels, then:

$200+0.03B=100+0.05B$

Solve for B:

$\begin{gathered} \Rightarrow200-100=0.05B-0.03B \\ \Rightarrow100=0.02B \\ \Rightarrow B=\frac{100}{0.02} \\ \Rightarrow B=5000 \end{gathered}$

Therefore, the total amount of panels that plant B produced, is:

$5000$

7 0

1 year ago