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o-na [289]
3 years ago
6

Steps in solving this equation plz​

Mathematics
1 answer:
Leni [432]3 years ago
5 0

Answer:

Equation:

Step-by-step explanation:

3y = x + 15

y + 3x = 4

To get the y-value Subtract 3x from both sides.

y = -3x + 4

Then substitute;

3(-3x + 4) = x + 15

Distribute: -9x + 12 = x + 15

Subtract x from both sides

-10x + 12 = 15

Subtract 12 from both sides

-10x = 3

Divide both sides by -10

x = 3/-10

Then to get the value of y;

y = -3(3/-10) + 4

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Use the Factor Theorem to determine whether x + 1 is a factor of P(x) = 2x³+4x²–2x−8.
Harman [31]

Answer: 2x^2+2x-4-\frac{4}{x+1}

Not a factor because there is a remainder.

Step-by-step explanation:

Let's use synthetic division to solve this..

-1  ║ 2 | 4 | -2 | -8

   ║    | -2| -2 |  4

   ║ 2 | 2|  -4 |  -4

2x^2+2x-4-\frac{4}{x+1}

PS: if anyone knows a better way to do a synthetic division chart please let me know.

5 0
2 years ago
48 divided by 76.8<br> I am very confused on the two digits numbers
Anestetic [448]
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5 0
2 years ago
A rectangle is drawn so that the width is 5 feet shorter than the length. The area of the rectangle is 14 square feet. Find the
leva [86]
Hello There!

Area = l x w
14 = x * x - 5
Multiples of 14:
1 and 14
7 and 2
7 and 2 are the only ones with a difference of 5.

Therefore, the length is 7ft and the width is 2ft.

Hope This Helps You!
Good Luck :) 

- Hannah ❤
4 0
3 years ago
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uranmaximum [27]
My lucky guess would be 3
4 0
3 years ago
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The set of data 9,6,12,13,9,8,13,14,h and k has a mode of 9 and a median of 10. Find the value of h and of k if h &lt; k.
Nata [24]

Step-by-step explanation:

9,6,12,13,9,8,13,14,h, k

mode = 9, so the h could be 9.

=> the set of data :

6,8,9,9,9,k,12,13,13,14

median = 10 , so (9+k) /2 = 10

9+k = 20

k = 20-9

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the correct answer :

h = 9 and k = 11

7 0
3 years ago
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