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4 years ago

Solve the quadratic equation by completing the square. x2 + 4x - 3 = 0

1 answer:

5 0

$x^2 + 4x - 3 = 0$
This answer should be $x = -2 - \sqrt{7}$ , based off of Wolfram Alpha.

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snow_tiger [21]

Answer: (d)- 1.76 kg

Step-by-step explanation:

Given

The first laptop mass was 11 kg

The rate of mass decreases by 4.7% per year

In 1982, it was

$\Rightarrow 11-11\times 4.7\%=11-11\times 0.047\\\Rightarrow 11(1-0.047)\ kg$

In 1983, it was

$\Rightarrow 11(1-0.047)-11(1-0.047)\times 0.047=11(1-0.047)^2$

In 2019 i.e. after 38 years, it is

$\Rightarrow 11(1-0.047)^38=11\times 0.953^{38}=1.76\ kg$

4 0

3 years ago

belka [17]

Answer is 27
2+7=9
9*3=27

4 0

4 years ago

Advocard [28]

Answer:

y - 7 = 4(x - 6)

y - 7 = 4x - 24

y = 4x - 24 + 7

y = 4x - 17

8 0

3 years ago

Kay [80]

Grkaki nady stryd wi us jkah

3 0

3 years ago

iris [78.8K]

The picture is your answer.

6 0

3 years ago