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Andrew [12]
3 years ago
8

Whats the solution to this equation? 3x-9=12

Mathematics
2 answers:
Nutka1998 [239]3 years ago
6 0

Answer:

x=7

Step-by-step explanation:

3x-9=12

add 9 to both sides

3x=21

divide both sides by 3

x=7

xxMikexx [17]3 years ago
5 0

x=7

flububeblehehehhooo

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The concentration, in parts per million, of a type of antibiotic in a human's bloodstream after h hours can be modeled by the po
Sergio039 [100]
C(h) = −0.09h^2 + 3.5h + 8
sub in 3 for H
C(3) = -0.09(3)^2 + 3.5 (3) + 8
=17.69 ppm
Hope that helps! :)
4 0
4 years ago
Read 2 more answers
CAN SOMEONE HELP ME WITH MY ALGEBRA 1.
Alenkinab [10]

Answer:

-5

Step-by-step explanation:

\frac{7-2^{2}+17}{-14+(2)(5)}

Multiply 2 · 2 = 4

\frac{7-4+17}{-14+(2)(5)}

Subtract 4 - 7 = 3

\frac{3+17}{-14+(2)(5)}

Add 3 + 17 = 20

\frac{20}{-14+(2)(5)}

Multiply 2 · 5 = 10

\frac{20}{-14+10}

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\frac{20}{-4}

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-5

5 0
3 years ago
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Please help me before it closes please
irga5000 [103]

Answer:

8 feet

Step-by-step explanation:

You would use the Pythagorean theorem to find it.

a^2 + b^2 = c^2

Therefore:

6^2 + b^2 = 10^2

36 + b^2 = 100

-36              -36

b^2 = 64

Square root both sides

b = 8

3 0
3 years ago
Write an expression for the phase the difference of twice a number (n) and 3 ​
kirza4 [7]

Answer:

2n - 3

Step-by-step explanation:

twice a number means to multiply it by 2

difference of a number and 3 is a number being reduced by 3 so the 3 comes after the subtraction sign

3 0
3 years ago
During the first 45 minutes of his trip, Mike traveled 5 miles. How many hours did it take Mike to travel those first 5 miles?
Alex73 [517]

Answer:

225 hours.

Step-by-step explanation:

45 x = 225

8 0
4 years ago
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