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2 years ago

What is the point-slope form of a line with slope -4 that contains the point

Mathematics

1 answer:

adoni [48]2 years ago

3 0

Answer:

y-3 = -4(x+2)

Step-by-step explanation:

Point slope form is

y-y1 = m(x-x1) where m is the slope and (x1,y1) is a point on the line

y-3 = -4(x --2)

y-3 = -4(x+2)

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How many 3 did git numbers can be formed by rearranging the digits in the set {2,3,4} if the number must be odd?

Liono4ka [1.6K]

2!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

7 0

3 years ago

If y varies inversely with 2.5x, and y=5.6 and x=30, write an equation to represent this relationship

klasskru [66]

Let the constant of variation be c.
We are given that y varies inversely with 2.5x, this means that:
y = (c) / (2.5x)
This can be written as:
2.5xy = c

Now, we a re given that y = 5.6 at x = 30.
Substitute with these values in the equation to get the value of c as follows:
2.5xy = c
2.5(30)(5.6) = c
c = 420

Therefore, the equation that describes the relation is:
2.5xy = 420

3 0

3 years ago

Ok, I am so sorry ,I rlly don't understand any of these things , can y'all help me with

melomori [17]

Answer:

x is 2.88 which can be rounded up to 2.9

Step-by-step explanation:

Subtract 2/3x from 5x.

Add 1/2 to 12.

Simplify and put into calculator (y=) to double check.

3 0

2 years ago

What’s the inverse of 2(x-2)^2 = 8(7+y)

Anettt [7]

Answer:

y= (x-2)^2/4-7

Step-by-step explanation:

5 0

3 years ago

1.Mr. Bowen’s test is normally distributed with a mean of 75 and a standard deviation of 3 points.

lianna [129]

Answer:

2.28%

Step-by-step explanation:

Mr. bowens test is normally distributed with a mean (μ) of 75 and a standard deviation (σ) of 3 points.

The z score is used in probability to show how many standard deviation is a raw score below or above the mean. The formula for the z score (z) is given by:

$z=\frac{x-\mu}{\sigma}$

For a raw score (x) of 81 points, the z score can be calculated by:

$z=\frac{x-\mu}{\sigma}=\frac{81-75}{3}=2$

Therefore from the normal probability distribution table, the probability that a randomly selected score is greater than 81 can be given as:

P(x > 81) = P(z > 2) = 1 - P(z < 2) = 1 - 0.9772 = 0.0228 = 2.28%

7 0

3 years ago