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3 years ago

Evaluate the following expression: -X- 6x + 10 when x = 5

Mathematics

1 answer:

BigorU [14]3 years ago

8 0

Answer:

-25

Step-by-step explanation:

Evaluate -x - 6 x + 10 where x = 5:

-x - 6 x + 10 = -5 - 6×5 + 10

-6×5 = -30:

-5 + -30 + 10

-5 - 30 + 10 = 10 - (5 + 30):

10 - (5 + 30)

5 + 30 = 35:

10 - 35

10 - 35 = -(35 - 10):

-(35 - 10)

| 3 | 5

- | 1 | 0

| 2 | 5:

Answer: -25

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Please help :) thanks :)

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Answer:

1. 5417.412

2. 401.13

Step-by-step explanation:

1. First, rewrite

$5\times 10^3+4\times 10^2+1\times 10^1+7\times 10^0+4\times \dfrac{1}{10^1}+1\times \dfrac{1}{10^2}+2\times \dfrac{1}{10^3}$

$5\times 1000+4\times 100+1\times 10+7\times 1+4\times 0.1+1\times 0.01+2\times 0.001$

So, this is

$5000+400+10+7+0.4+0.01+0.002\\ \\=5417.412$

2. First, rewrite

$4\times 10^2+1\times 1 \dfrac{1}{10^1}+3\times \dfrac{1}{10^2}$

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This is

$4\times 100+1\times 1+1\times 0.1+3\times 0.01$

So, this is

$400+1+0.1+0.03\\ \\=401.13$

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