Do it in ratio form, 30/10=x/4, 30*4=120/10=12. it will be 12 centimeters long
Area of a rectangle is length times width. Area of a triangle is one-half base times height. Now just plug in everything we know and set the equations equal to each other.
(6)(8) = 0.5(8)(h)
Solve for height
48 = 4h
h = 12 m
Answer:
(a) the initial count of bacteria
(b) the growth factor (per hour)
(c) the initial count in the second study
(d) the difference in initial counts between the two studies
Step-by-step explanation:
(a) 1200 is b1(0), the initial count of bacteria.
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(b) 1.8 is the growth factor per hour, the factor that multiplies the previous hour's count to get this hour's count.
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(c) Assuming b2(t) = 1000(1.8)^t, the value 1000 is the initial count of bacteria in the second study, b2(0).
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(d) The difference between 1200 and 1000 means the first study started with 200 more bacteria than the second study did
Answer:
The expressions are not equivalent because Ella did not know that you can’t use substitution to test for equivalence.
Step-by-step explanation:
<u>Equivalent algebraic expressions </u> are those expressions which on simplification give the same resulting<u> expression.</u>
Two algebraic <u>expressions</u> are said to be equivalent if their values obtained by substituting any values of the variables are same.
Two expressions 3f+2.6 and 2f+2.6 are not equivalent, because when f=1,
3f+2.6=3.1+2.6=3+2.6=5.6
2f +2.6=2.1+2.6=2+2.6=4.6
5.6≠ 4.6
Method of substitution can only help her to decide the expresssions are not equivalent, but if she wants to prove the expressions are equivalent, she must prove it for all values of f.
3f+2.6=2f+2.6
3f=2f
3f-2f=0
f=0
This is true only when f=0.
Hence,
The expressions are not equivalent because Ella did not know that you can’t use substitution to test for equivalence.
this what i know
21 is the answer multiply time 40 is the real answer
Step-by-step explanation:
There you go
