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slavikrds [6]
3 years ago
12

Tim has a large collection of books. The number of paperback books he owns is three less then four times the number of hardcover

books. In total, Tim has 447 books. How many hardcover books does he own?
Mathematics
1 answer:
dlinn [17]3 years ago
3 0

Answer: let the no of paperback books be x and hardcover books be y

4y - x = 3

Therefore, x - 4y = -3 -----(1)

x + y = 447 ----(2)

Put x = 447 - y in eqn 1

447- y - 4y = -3

-5y = -3 - 447

-5y = -450

y = 90

x = 357

Step-by-step explanation:

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Slope = -8, passing through (2,5)
Marrrta [24]
Y - y₁ = m(x - x₁)
y - 5 = -8(x - 2)
y - 5 = -8(x) + 8(2)
y - 5 = -8x + 16
<u>  + 5            + 5</u>
     y = -8x + 21
5 0
3 years ago
The product of a number and 8
Alex787 [66]

Answer:

8n

Step-by-step explanation:

The answer would be 8n because 8*n = 8n

5 0
3 years ago
jake can carry 6 1/4 pounds of wood in from the barn. His father can carry 1 5/7 times as much as Jake. How many pounds can Jake
Studentka2010 [4]
It would be: 6 1/4 * 1 5/7
= 25/4 * 12/7
= 300/28 = 150/14 = 75/7

In short, Your Answer would be 75/7 or 10 5/7 Pounds

Hope this helps!
4 0
3 years ago
What is 3x+4= -15? How would you get a negative number?
bulgar [2K]

Answer:

x=-\frac{19}{3}

Step-by-step explanation:

3x+4=-15

3x+4-4=-15-4

3x=-19

\frac{3x}{3}=\frac{-19}{3}

x=-\frac{19}{3}

5 0
3 years ago
An astronaut with a mass of 80.70 kg is standing still on the surface of the Mars (Mars has an acceleration due to gravity of 3.
mariarad [96]

Answer:

Force, F = 68.93 pounds

Step-by-step explanation:

Given that,

Mass of the astronaut, m = 80.70 kg

Acceleration due to gravity on Mars, a=3.8\ m/s^2

The force acting on him is given by using second law of motion as :

F=m\times a

F=80.70\ kg\times 3.8\ m/s^2

F = 306.66 N

Since, 1 newton = 0.224 pound

F = 306.66 N = 68.93 pounds

So, 68.93 pounds force she exerts on the martian surface. Hence, this is the required solution.

8 0
3 years ago
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