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Pepsi [2]
3 years ago
15

Solve 5[8-(9x-7)]+6x=0

Mathematics
1 answer:
trapecia [35]3 years ago
4 0
<span>5[8 - (9x - 7)] + 6x = 0

5[8 -9x + 7] + 6x = 0

5(15 -9x) + 6x = 0

75 - 45x + 6x = 0

-39x = -75

39x = 75

x = </span>\frac{75}{39} = 1.923076923076923 ≈ 1.92
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Let us say that:

x = mass from Earl Grey Tea

y = mass from Orange Pekoe Tea

 

So that:

x + y = 600

and that:

6 x + 4 y = 4.5 * 600

6 (600 – y) + 4 y = 2700

3600 – 6y + 4y = 2700

-2y = -900

y = 450 pounds

x = 600 – 450 = 150 pounds

 

Answer:

<span> Earl Grey Tea = 150 pounds</span>

<span>Orange Pekoe Tea = 450 pounds</span>

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Answer:

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Step-by-step explanation:

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3 years ago
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2(8a + 5b) -(2a + 3b) Part A: Simplify the expression shown above, and include all necessary work to support your answer. Part B
Alex17521 [72]

Answer:

Total cost = <em>$</em> 4.55

Step-by-step explanation:

2(8a + 5b) -(2a + 3b)

<em>Part A: Simplify the expression shown above</em>

Exapanding the brackets;

16a + 10b - 2a - 3b

Collecting like terms;

16a - 2a + 10b - 3b

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b = 0.15

14a + 7b

Inserting the values into the equation;

14 (0.25) + 7(0.15)

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Answer:

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6 0
3 years ago
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What is the estimated answer to 8 x 7 divided by 0.5
Lelu [443]

Answer:

112

Step-by-step explanation:

8 x 7 = 56

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3 years ago
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