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Serggg [28]
2 years ago
5

What is the answer to 3(2b-1)

Mathematics
2 answers:
Hunter-Best [27]2 years ago
6 0
You have to distribute the 3 to everything within the parenthesis.

3 • 2b = 6b & 3 • -1 = -3

So, your answer will be 6b-3.

Hope I helped. :)
emmainna [20.7K]2 years ago
4 0
You need to distribute the 3, so your answer would be 6b-3
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Solve: x^2 – 16x + 63 < 0 ​
marysya [2.9K]

Answer:

7 < x < 9

Step-by-step explanation:

x^2 – 16x + 63 < 0

this is a parabola that opens up.

The parabola will be < 0 for values between the roots.

to picture this see the graph below.

Factor

(x - 7)(x - 9) < 0

Roots

x = {7, 9}

solution

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8 0
3 years ago
Rectangular classroom seats 72 students. If the seats were rearragned with 3 more seats rows in each row, the classroom would ha
Gre4nikov [31]
<span>Let the original number of seats in a row be x;
</span>Let the number rows be y;

( x + 3) * (y - 2 )= 72 and x * y = 72 => 72 + 3 * y - 2 * x = 72 => 3 * y = 2 * x;
=> x is divisible by 3;

1. x = 3 => y = 72 / 3 => y = 24;
2. x = 6 => y = 72 / 6 => y = 12;
3. x = 9 => y = 72 / 9 => y = 8;
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My analysis tell me that the right answer is 9 seats in a row and 8 rows;
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Step-by-step explanation:

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