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2 years ago

Solve using quadratic formula. 2x^2+6x+3=0

1 answer:

4 0

$x = \frac{-b +/- \sqrt{b^{2} -4ac} }{2a}$

a = 2
b = 6
c = 3

$x = \frac{-6 +/- \sqrt{6^{2} -4*2*3} }{2*2}$

$x = 0.634$ or $x = -2.366$

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3 years ago

Graph the line whose y-intercept is - 9 and whose x-intercept is 5.

Nostrana [21]

Answer:

y=1.8x-9

Step-by-step explanation:

if they are intercepts so the x/y will be zero, so in y intetceot the x is zero, and in the x itercept the y is zero.

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5,0

we calculate the slooe / rise

-9-0/0-5 = 1.8

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3 years ago

Write the number in standard form 6.000.000 + 200 + 9 The standard form of 6,000,000 + 200 + 9 is

Westkost [7]

Answer:

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2 years ago

Solve for x.<br><br>2 x - 6 / 4 = 10<br><br>x = [?]

ra1l [238]

Answer:

x = 5.75

Step-by-step explanation:

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3 years ago

Alex swims at an average speed of 45m/min. How far does he swim in 1 minute and 24 seconds?

aksik [14]

Answer:

63 m

Step-by-step explanation:

We are given the following in the question:

Average speed of swimming = 45 m/min

Time = 1 minute 24 seconds

Converting time into minutes:

$=1 + \dfrac{\text{seconds}}{60}\\\\=1 + \dfrac{24}{60}\\\\=1.4\text{ minutes}$

Formula:

$\text{Speed} = \dfrac{\text{Distance}}{\text{Time}}$

Putting values, we get.

$45 = \dfrac{\text{Distance}}{1.4}\\\\\text{Distance} = 45\times 1.4 = 63\text{ m}$

Thus, Alex swims for 63 m in 1 minute and 24 seconds.

6 0

3 years ago