Answer:
The correct option is 1.
Step-by-step explanation:
Given information: AD = 25, CD = 5, DB = 1 and CD⊥AB.
According to the Pythagoras theorem,
In triangle BCD,
Taking square root both sides.
In a right angled triangle,
Therefore the correct option is 1.
The combined mean of the 14 people's index finger is: 12.75 cm.
<h3>How to Find the Combined Mean?</h3>
Combined mean = [(mean of first group × number of data of the first group) + (mean of second group × number of data of the second group)] ÷ (number of data of the first group + number of data of the second group).
Given the following:
Mean of first group = 7.8
Number of data of the first group = 7
Mean of second group = 17.7
Number of data of the second group = 7
Combined mean = [(7.8 × 7) + (17.7 × 7)] / (7 + 7)
Combined mean = 178.5 / 14
Combined mean = 12.75 cm.
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Answer
use goo gle
Step-by-step explanation:
Answer:
Step-by-step explanation:
Given the expression
Follow the PEMDAS order of operations
calculate within parentheses
calculate exponents
Multiply and divide (left to right)
Add and subtract (left to right)
Thus,
The width of the aquarium is 0.1625 ft.
Step-by-step explanation:
Given,
The length (l) of the aquarium = 2 ft
Height (h) = 1.5 ft
The capacity of water it holds = 3.75 gallons
That means the volume (V) = 3.75 gallon
To find the width(b) of the aquarium.
Formula
- The volume of a cuboid with l as length, b as width and h as height = lbh
So,
V = 3.75×0.13 cube ft
According to the problem,
2×1.5×b = 3.75×0.13
or, b = (3.75×0.13)÷(2×1.5)
or, b = 0.1625 ft
Hence,
The width of the aquarium is 0.1625 ft.