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3 years ago

Please find the slope, using formula

Mathematics

1 answer:

koban [17]3 years ago

3 0

Answer:

-.2857

Step-by-step explanation:

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Two angles are supplementary if their sum is 180 the larger angle measures five degrees more than six times the measure of a sma

attashe74 [19]

The measure of angle one is 155 and the other measure is 25

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4 years ago

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What is an equation of the line that passes through the points (4,-6) and (8,-4)

qaws [65]

Answer:

$y = \frac{1}{2} x - 8$

Step-by-step explanation:

The equation of a line is usually written in the form of y=mx+c, where m is the gradient (also known as slope) and c is the y-intercept (the point through which the line cuts through the y-axis).

$\boxed{gradient = \frac{y1 - y2}{x1 - x2} }$

Using the gradient formula above,

$m = \frac{ -4 - ( - 6)}{8 - 4} \\ m = \frac{ - 4 + 6}{4} \\ m = \frac{2}{4} \\ m = \frac{1}{2}$

Substitute the value of m into the equation:

y= ½x +c

To find the value of c, substitute a pair of coordinates.

When x=4, y= -6,

-6= ½(4) +c

-6= 2 +c

c= -6 -2 (-2 on both sides)

c= -8 (simplify)

Thus, the equation of the line is y= ½x -8.

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3 years ago

Only four countries have not adopted the metric system. True or False?

Fynjy0 [20]

False, only three countries have not adopted the metric system.

3 0

3 years ago

Please help ASAP I JUST NEED THIS ONE

Tatiana [17]

Answer:

the answer to this is D

Step-by-step explanation:

1 is 55

2 is 110

4 is 220

7 0

3 years ago

Researchers are recording how much of an experimental medication is in a person's bloodstream every hour. they discover that hal

Furkat [3]

By using the known half-life, we can see that if the initial dose is 500mg, after 4 days the medication will be 0.0076 mg.

We define half-life as the time such that the initial amount is reduced to its half.

So, if a given substance has a half-life T, then the amount of substance as a function of time, we have:

S(t) = A*e^{-t*ln(2)/T}

Where t is the variable in time units.

We know that T = 6 hours, and A, the initial dose, is 500 mg, so the formula is:

S(t) = 500mg*e^{-t*ln(2)/6h}

Then after 4 days (or 4*24h = 96h) the amount of medication is:

S(96h) = 500mg*e^{-96h*ln(2)/6h} = 0.0076 mg.

If the initial dose was 750mg, after 4 days the person would have:

S(96h) = 750mg*e^{-96h*ln(2)/6h} = 0.0114 mg

So the person would have:

0.0114 mg - 0.0076 mg = 0.038 mg more of medication.

If you want to learn more about the half-life, you can read:

brainly.com/question/11152793

7 0

2 years ago