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3 years ago

Please help asap pleaseeee (picture shown)

Mathematics

1 answer:

Paraphin [41]3 years ago

4 0

The correct answer is 3x+90=180

Because you add the 2x and the x and you get 3x then there is a 90 degree angles so you add that and =180

Once you put it in the equation you can subtract 90 from 180 and you get 90 which you then divided by 3x and x equals 30

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The sum of three numbers is 35. The first number is three less than the second and the third is two more than 4 times the second

saul85 [17]

Step-by-step explanation:

$x + y + z = 35 \\ x = y - 3 \\ z = 4y + 2 \\ \\ (y - 3) + y + (4y + 2) = 35 \\ 6y - 1 = 35 \\ 6y = 36 \\ y = \frac{36}{6} \\ y = 6 \\ \\ x = y - 3 \\ x = 6 - 3 \\ x = 3 \\ \\ z= 4y + 2 \\ z= (4 \times 6) + 2 \\ z = 26$

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If f(3)=8 and f'(3)=5 what do you know about f^-1

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BaLLatris [955]

Answer: c. 7,999,999 phone numbers

A can be any digit 2-9, then there are 8 possible numbers.

B can be any digit 0-9, then there are 10 possible numbers.

C can be any digit 0-9, then there are 10 possible numbers.

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Then are possible: 8·10·10·10·10·10·10 = 8·10⁶ = 8,000,000 phone numbers

But the number 867-5309 is not used then 8,000,000 - 1 = 7,999,999 possible phone numbers.

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