Write 900,000+80,000+500+7 in standard form
2 answers:
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Answer:
see explanation
Step-by-step explanation:
(8)
the common ratio r, of a geometric sequence is
r = =
= ......
r = =
= 8
(9)
The simplest way to evaluate the sum is to substitute k = 3, 4, 5, 6 into each term and sum them
(- 9 + 20) + (- 12 + 20) + (- 15 + 20) + (- 18 + 20)
= 11 + 8 + 5 + 2 = 26
Answer:
x = ±
Step-by-step explanation:
Given
x² - 7x + 9 = 0 ( subtract 9 from both sides )
x² - 7x = - 9
Solve using the method of completing the square
add ( half the coefficient of the x- term)² to both sides
x² + 2( - )x +
= - 9 +
(x - )² =
( take the square root of both sides )
x - = ±
= ±
( add
x = ±
=
Boxers = b
Spaniels = s
Now you have two equations - one that tells you the number of boxers in relation to spaniels and one telling you the number of each breed in relation to the total number of dogs. Solve using substitution.
There are 6 spaniels.
Spaniels = s
Now you have two equations - one that tells you the number of boxers in relation to spaniels and one telling you the number of each breed in relation to the total number of dogs. Solve using substitution.
There are 6 spaniels.