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liubo4ka [24]
2 years ago
11

What is the gum of 70 and 50

Mathematics
1 answer:
Scorpion4ik [409]2 years ago
6 0

Answer:

120 ? what this supposed to be about ? is it to estimate or subtract? does this have mutiple choices?  and what gum are their referring too ? the gum you chew or in your teeth?

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Determine if each graph represent a direct proportional or not
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Step-by-step explanation:

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Solve the system of equations. If a system has one unique solution, write the solution set. Otherwise, determine the number of s
Sauron [17]

The value of x, y and z from the system of equation are -1, -8 and 5 respectively.

Data;

  • -2x + 6y + 3z = -31
  • -3y + 7z = 59
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<h3>System of Equation</h3>

To solve this problem, we have to solve the system of equation using substitution method.

From equation (iii)

2z = 10\\z = 5

let us substitute the value of z into equation (ii)

-3y + 7z = 59\\z = 5\\-3y + 7(5) = 59\\-3y + 35 = 59\\-3y = 59 - 35\\-3y = 24\\y = -8

Let's substitute the value of x and y into equation (i)

-2x + 6y + 3z = -31\\y = -8, z = 5\\-2x + 6(-8) + 3(5) = -31\\-2x - 48 + 15 = -31\\-2x - 33 = -31\\-2x = -31 + 33\\-2x = 2\\x = -1

From the calculation above, the value of x, y and z are -1, -8 and 5 respectively.

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Step-by-step explanation:

a) P (x is less than 11 minutes) = 11 x 0.05

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P (x is more than 14 minutes) = 0.05 x (20 - 14)

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b) P (x is between 8 and 13 minutes) = 0.05 x (13 -8)

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