Answer:
Step-by-step explanation:
1. Humans can detect sounds in a frequency range from about 20 Hz to 20 kHz.
2. speed of sound is 343 m/sec.
3. two animals are Bats and Whales.
4.The voiced speech of a typical adult male will have a fundamental frequency from 85 to 180 Hz, and that of a typical adult female from 165 to 255 Hz.
Answer: 
Step-by-step explanation: Using the place value chart we can see that 2.7 means two and seven-tenths which can be written as the mixed number
.
Answer:
<h3>The length is 44 feet</h3><h3>The width is 20 feet</h3>
Step-by-step explanation:
Perimeter of a rectangle = 2l + 2w
where
l is the length
w is the width
Perimeter = 128 feet
The width is 24 feet less than the length is written as
w = l - 24
128 = 2l + 2( l - 24)
128 = 2l + 2l - 48
Group like terms
4l = 176
Divide both sides by 4
l = 44
The length is 44 feet
Substitute l = 44 into w = l - 24
w = 44 - 24
w = 20
The width is 20 feet
Hope this helps you
Answer:
y = 102, z = 67
Step-by-step explanation:
The angles 113 and z form a straight angle and are supplementary, thus
z = 180 - 113 = 67
The sum of the 4 interior angles of a quadrilateral = 360°
Sum the interior angles and equate to 360 for y
y + 102 + 89 + 67 = 360, that is
y + 258 = 360 ( subtract258 from both sides )
y = 102
Answer:
She'll have to pay 4.8USD to get the bike