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2 years ago

10

HELP PLS ASAP!! ILL GIVE 10 BRAINLEST THINGYS !!!

1 answer:

viktelen [127]2 years ago

7 0

Answer: The slope is −2/3

Step-by-step explanation:

2 x + 3 y = 12 is the standard form for a linear equation. To determine the slope, solve the equation for y in order to convert to the slope-intercept form y = m x + b , where m is the slope and b is the y-intercept.

2 x + 3 y = 12

Subtract 2 x from both sides.

3 y = − 2 x + 12

Divide both sides by

3 . y = − 2 /3 x + 12 /3 =

y = − 2 /3 x + 4

The slope is

− 2 /3

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The probability that a new car battery functions for more than 10,000 miles is .8, the probability that it functions for more th

MAXImum [283]

Answer:

There is a 50% probability that its total life will exceed 20,000 miles.

Step-by-step explanation:

To solve this question, we use the following formula:

$P(A|B) = \frac{P(A \cap B)}{P(B)}$

In which P(A|B) is the probability of A happening, given that B has happened, $P(A \cap B)$ is the probability of A and B happening, and P(B) is the probability of B happening.

In this problem, we want:

The probability of the total life of the car battery exceeding 20,000 miles, given that it exceeded 10,000 miles.

$P(A \cap B)$ is the probability of exceeding 20,000 and 10,000 miles. It is the same as the probability of exceeding 20,000 miles(If it exceeded 20,000 miles, necessarily it will have exceeded 10,000 miles). So $P(A \cap B) = 0.4$

P(B) is the probability of exceeding 10,000 miles. So $P(B) = 0.8)$

So

$P(A|B) = \frac{P(A \cap B)}{P(B)} = \frac{0.4}{0.8} = 0.5$

There is a 50% probability that its total life will exceed 20,000 miles.

6 0

3 years ago

Is the equation y=2/x linear?<br> Explain.

MAXImum [283]

It is not linear.
In a linear equation, you cannot divide by a variable.
Here you are dividing by x, so the equation is not linear.

4 0

3 years ago

Use the graph to interpret and match the approximate intervals with their descriptions.

Dmitry_Shevchenko [17]

Answer:

(-9, -3) - Interval over which the difference of the numbers of sales is negative.

(4.9, 10 ) - Interval over which the difference of the numbers of sales 15 positive

(-3, 10) - Interval over which the difference of the numbers of tale decreasing

(0, 4.9) - Interval over which the difference of the numbers of sales is increasing

Hope this helps!

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3 years ago

The difference between the largest and smallest number in a given set of data

asambeis [7]

The answer to the question is range

5 0

2 years ago

Read 2 more answers

A rocket is launched from the top of a 55-foot cliff with an initial velocity of 138 ft/s.

melisa1 [442]

For this case we have that the equation that describes the height is:

$h = -16t ^ 2 + vt + c$

Where,

v: initial speed

c: initial height

Substituting values we have:

$h = -16t ^ 2 + 138t + 55$

Then, to find the time, we use the quadratic formula:

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

Substituting values we have:

$t =\frac{-138 +/-\sqrt{138^2 - 4(-16)(55)} }{2(-16)}$

Rewriting:

$t =\frac{-138 +/-\sqrt{19044 + 3520} }{-32}$

$t =\frac{-138 +/-\sqrt{22564}}{-32}$

$t =\frac{-138 +/-150.21}{-32}$

We discard the negative root because we want to find the time.

We have then:

$t =\frac{-138 -150.21}{-32}$

$t =\frac{-288.21}{-32} \\t=9$

Answer:

D. $0 = -16t^2 + 138t + 55; 9 s$

3 0

2 years ago