2 years ago

Find the measure of AB. A 21 B 14 C 20 D 22

Mathematics

1 answer:

True [87]2 years ago

4 0

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Can someone answer this?

ad-work [718]

Answer:

Step-by-step explanation:

6x-1+3x+5x+3+4x+8+5x+5=360 degree(sum of exterior angle of a pentagon is 360 degree)

23x+15=360

23x=360-15

x=345/23

x=15

therefore the value of x is 15 degree.

8 0

3 years ago

Please tell explain what the right answer is

kupik [55]

Angle 3 and angle 4 are supplementary angles and when added together need to equal 180 degrees.

To find angle 4 subtract angle 3 from 180.

Angle 4 = 180 - 101 = 79 degrees.

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3 years ago

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Which of the following points is in the solution set of y>-x² + 5?

eimsori [14]

Uh I did not learn this yet but I think The answer is 2,4

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2 years ago

How many decibels is this? show work

slavikrds [6]

Answer:

115 dB

Explanation:

1. Given equation:

$\beta =10log(\frac{I}{I_0})\\\\ I_0=10^{-12}W/m^2$

2. Given intensity:

$I=0.315W/m^2$

3. Decibels

$\beta =10log(0.315/10^{-12})\\ \\ \beta =10log(315,000,000,000)\\ \\ \beta =10(11.498)=114.98\approx 115$

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2 years ago

4.Thirty percent of the liquid evaporated. If 560 milliliters remain, how many milliliters evaporated?

Vitek1552 [10]

392 millimeters I think that's the answer but I'm not sure

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3 years ago

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