Please!!!!!! Help!!!! And both are different
2 answers:
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answer:
x = 4 or 5.6568
step-by-step explanation:
- know the formula and plug in
formula: a^2 + b^2 = c^2
- now plug in what we have
- whatever the RIGHT ANGLE points to is the HYPOTENUSE or c
- the other two sides are the "legs" or a and b
a^2 + b^2 = c^2
7^2 + b^2 = 9^2
49 + b^2 = 81
b^2 = 32
b = 4
- in this case, b would be used as x
x = 4 or 5.6568 (exact value)
Answer:
=-65
Step-by-step explanation:
given nos -5,-9,-13,-17,-21
common difference=-4
given series are in arithmetic progression,
=
where, n=5 , a=first term=-5 , l=last term=-21
=
=
=-65 answer