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Shtirlitz [24]
3 years ago
12

X²-2x=8 what is the answer

Mathematics
1 answer:
katrin2010 [14]3 years ago
6 0

Answer:

X=4,  -2

Step-by-step explanation:

Check attachment

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Identify the type of pair of angles labeled as 1 and 2 in the figure.
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7 0
3 years ago
Read 2 more answers
How do you find a missing exponent? If the question is 2^3 x 2^5 = 2^?
kap26 [50]

Answer:

2^3 X 2^5 = 2^8

when multiplying indices with the same base number just add the indices

4 0
3 years ago
Charlie used a regression calculator to generate the equation f(x) = –0.15x + 20.1 for the ordered pairs (2, 15), (4, 21), (6, 2
aivan3 [116]
Answer: The r<span>-value for the linear function related to the ordered pairs is very close to zero, so it is not a good representation of the data. A quadratic model would better represent the data because there is a turning point within the data set. The data increases then decreases, which is what the graph of a quadratic does. </span>
8 0
3 years ago
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How do you solve this equation?
Travka [436]
Exponentail thingies

easy, look at all them them, see that they have 5 in common?
rremember how esay it was to factor
ax^2+bx+c=0

now we have
5^(2x)-6(5^x)+5=0
remember that 5^(2x)=(5^2)^x or (5^x)^2
in other words, we can rewrite it as
1(5^x)^2-6(5^x)+5=0
if yo want, replace 5^x with a and factor
1a^2-6a+5=0
(a-1)(a-5)=0
a=5^x
(5^x-1)(5^x-5)=0
set each to zero

5^x-1=0
5^x=1
take the log₅ of both sides
x=log₅1


5^x-4=0
5^x=4
take the log₅ of both sides
x=log₅4

x=log₅1 and/or log₅4







second quesiton

same thing

1(2^x)-10(2^x)+16=0
factor
(2^x-8)(2^x-2)=0
set each to zero

2^x-8=9
2^x=8
x=3

2^x-2=0
2^x=2
x=1

x=3 or 1







first one
x=log₅1 and/or log₅4
second one
x=1 and/or 3


7 0
3 years ago
Which property is used in the following? 2(8+9)= 2*8+2*9
defon

Answer:

A) None of the above

Step-by-step explanation

it's distributive property

8 0
3 years ago
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