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schepotkina [342]
2 years ago
5

Lease please help me I will give brainliest to the first right answer!!!!

Mathematics
2 answers:
Alexus [3.1K]2 years ago
8 0

Answer:

a.option is the correct answer right I think so

Olin [163]2 years ago
4 0

Answer:

A seems to be the right answer

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If x^2+2=3^2/3+3^-2/3 then prove that 3x^3+9x-8=0​
gregori [183]

Answer:

See below.

Step-by-step explanation:

x^2 + 2 = 3^2/3 + 3^-2/3

x^2 = 3^2/3 + 3^-2/3  - 2

x =  √(3^2/3 + 3^-2/3  - 2)

x = 0.748888296

Substitute for x  in  3x^3 + 9x - 8:

3( 0.748888296)^3 + 9( 0.748888296) - 8 = 0.

So it is proved.

6 0
3 years ago
Read 2 more answers
Kailey buys a greeting card for $3.79. She then buys 3 postcards that all cost the same amount. The total cost is $6.04. How muc
leonid [27]

Answer:

0.75 was how much she paid for each postcard.

Step-by-step explanation:

6.04-3.79

=2.25

so take 2.25 divided by 3

= o.75

equations would be 6.04-3.75=b/ 3

5 0
3 years ago
Find the values of x and y in the diagram​ and show work please it's for geometry class
Romashka-Z-Leto [24]

Answer:

x = 10

y = 70

Step-by-step explanation:

By using the vertical angles theorem we know that x+ y +10 = 90, also simplified to x + y = 80

and 2x + y = 90

By using the substitution method on x + y = 80, it will be y = -x + 80

When you put into the equation 2x + y = 90 you will get 2x -x +80 = 90

Then it will simplify to x = 10

After that plug 10 into x + y = 80 to 10 + y = 80 and get y = 70

8 0
3 years ago
Which is the correct simplified form of the expression? (HELP)
aksik [14]
The answer should be option C! I think? I hope it helps :)
8 0
3 years ago
Help plz this hard i really need help
Assoli18 [71]

With all questions???

8 0
3 years ago
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