b. -1, 19, 39, 59
c. 19, -1, 59, 39
d. -1, 14, 29, 44, 59
Please select the best answer from the choices provided
a) A
b) B
c) C
d) D
Answer:
Correct choice is B
Step-by-step explanation:
For the numbers -1 and 59, find the difference 59-(-1):
since 59-(-1)=60 and (two arithmetic means tells you there will be three intervals), two arithmetic means will be
The only correct sequence is -1, 19, 39, 59.
Answer:
b.
-1, 19, 39, 59
Step-by-step explanation:
Answer:
7.
Step-by-step explanation:
To solve the equation a^2 - 49 by factoring, we can use the difference of squares formula. The difference of squares formula states that a^2 - b^2 can be factored as (a + b)(a - b).
In this case, a^2 - 49 can be rewritten as (a + 7)(a - 7).
By setting each factor equal to zero, we can solve for a:
a + 7 = 0
a = -7
a - 7 = 0
a = 7
Therefore, the solutions to the equation a^2 - 49 = 0 are a = -7 and a = 7.
Answer:(A+7)(A−7)
Step-by-step explanation:
Since both terms are perfect squares, factor using the difference of squares formula, a2−b2=(a+b)(a−b) where a=A and b=7.