Step-by-step explanation:
Triangles ABC and DEF are congruent.
The letter B is the 2nd letter in 'ABC'.
Likewise, the letter E is the 2nd letter in 'DEF'.
Therefore Angle B = Angle E.
Answer:
It is a irrational number
Step-by-step explanation:
The square root of 40 is not a rational number. 40 is not a perfect square, so its square root is irrational. The square root of 40 is: 6.324555320336759. It cannot be written as a simple fraction, so it is irrational.
Answer:
7 hours/week
Step-by-step explanation:
A "unit rate" is found by dividing one quantity by the other so that the denominator of the result is 1 (a unit). Often, we want the units of the independent variable in the denominator. Sometimes, we don't know what that is, because it depends on the intended use of the rate.
(14 h)/(2 wk) = 7 h/wk
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When numerator and denominator have the same units, the result is a pure number (one with no units). If that number is a fraction, sometimes it is expressed as a percentage; other times, it is left as a fraction or written as a ratio with a colon, such as 1 : 35.
Here, both units are time, so the "unit rate" could be expressed as a fraction. We know there are 168 hours in a week, so this rate could be ...
(14 hours)/(2·168 hours) = 1/24 . . . . . with no units
24 because if the sum is 72 you divide 72 by 3 and you get 24