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3 years ago

Slope is 2 and goes through the point (0,-11)

Mathematics

1 answer:

DIA [1.3K]3 years ago

4 0

Answer:

y = 2x - 1

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Here m = 2

The line crosses the y- axis at (0, - 1) ⇒ c = - 1

y = 2x - 1 ← equation of line

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Element X decays radioactively with a half life of 11 minutes. If there are 870 grams

exis [7]

Answer:

27.5 minutes

Step-by-step explanation:

Using,

R/R' = 2ᵃ/ᵇ------------------ Equation 1

From the equation,

R = mass of Element X before radioactive decay, R' = mass of element X after radioactive decay, a = Time taken, b = half life.

Given: R = 870 grams, R' = 154 grams, b = 11 minutes.

Substitute these values into equation 1

870/154 = 2ᵃ/¹¹

(870/154)¹¹ = 2ᵃ

Solve for a

2ᵃ = (5.649)¹¹

2ᵃ = 187061.26

Taking the logarithm of both side,

Log2ᵃ = Log(187061.26)

⇒ a = log(187061.26)/log2

a = 8.272/0.301

a = 27.5 minutes

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2 years ago

What is the equation of a circle that has a diameter of 10 units if its center is at (3,8)?

astraxan [27]

Answer:

Step-by-step explanation:

$(x-3)^2+(y-8)^2 = 25$

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3 years ago

Describe the graph of x>-2

tekilochka [14]

Answer:

A dotted line going through -2 on the x axis, with the right side of the graph shaded in.

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2 years ago

342 is the product of q and 214

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Answer:

What's the question?

Step-by-step explanation:

342 is the product of q and 214

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Step-by-step explanation:

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