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Mamont248 [21]
3 years ago
10

HELPPSOJSUSHHWYAYSYYSYYEHWHWHS​

Mathematics
1 answer:
OlgaM077 [116]3 years ago
4 0

Answer:

1. (-4, 1)

2. I substituted (y = x + 5) into (3x + y = -11) first before substituting the value of x into (y = x + 5) to find the value of y.

Step-by-step explanation:

Substitute y = x + 5 into 3x + y = -11:

3x + y = -11

3x + x + 5 = -11

4x + 5 = -11

4x = -11 - 5

    = -16

x = -16 ÷ 4

x = -4

Substitute x = 4 into y = x + 5:

y = x + 5

y = -4 + 5

y = 1

A coordinate point is written like this: (x, y)

Thus, the final answer is: (-4, 1)

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Two friends Vicky and Micky start a business together. They decided to share their capitals depending up on the variable expendi
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Answer:

a- x = 5/3, or x = -7/2

b- 675

c - 5·x + 2

Step-by-step explanation:

The polynomial representing the capital of the two partners = 6·x² + 11·x - 35

a. The total share is the capital of the two partners together = 6·x² + 11·x - 35

∴ When their total share is equal to 0, we have;

6·x² + 11·x - 35 = 0

Factorizing the above equation with a graphing calculator gives;

(3·x - 5)·(2·x + 7)

Therefore;

x = 5/3, or x = -7/2

b- The total expenditure, when x = 10 is given by substituting the value of <em>x </em>in the polynomial 6·x² + 11·x - 35, as follows;

When x = 10

6·x² + 11·x - 35 = 6 × 10² + 11 × 10 - 35 = 675

The total expenditure of Vicky and Micky when x = 10 is 675

c - The sum of their expenditure is (3·x - 5) + (2·x + 7) = 5·x + 2

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