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3 years ago

What is the slope of the line that passes through the points (-4,2) and (2,-1)

Mathematics

2 answers:

Anettt [7]3 years ago

8 0

Answer:

1/-2 is the slope

Step-by-step explanation:

$\frac{2-(-1)}{-4-2} = \frac{2+1}{-4-2} = \frac{3}{-6} = \frac{1}{-2}$

postnew [5]3 years ago

6 0

Answer:

-1/2

Step-by-step explanation:

find the difference btwn the second and first y coords.

-1 - 2 = -3

find the difference between second and first x coords.

2 - -4 = 6

-3/6 simplifies to -1/2

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Simplify i^7/i x i^3 A. i^4 B.i^11 C.i^3 D. 1

Liula [17]

Answer:

c.i^ 3

Step-by-step explanation:

i^7/i x i^3

i ^ 7 / i ^ 4

i^ 7 - 4

i^ 3

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3 years ago

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Does anyone know how to tell the difference between rational and irrational numbers?

Elan Coil [88]

Answer:

Rational numbers refers to a number that can be expressed in a ratio of two integers. An irrational number is one which can't be written as a ratio of two integers. Expressed in fraction, where denominator ≠ 0. Cannot be expressed in fraction.

Step-by-step explanation:

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7 0

3 years ago

Solve for x from the above problem: 3x = 12 - X* O X = 4 O x= 3 O X=-3 Ox=4

igor_vitrenko [27]

Answer 3 times 4 =12 12-3=9 distributive

Step-by-step explanation:

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3 years ago

Help plsssssss WILL GIVE BRAINLIEST

ruslelena [56]

Answer: (1,2)

Step-by-step explanation:

I will help you..

Given:

$-2x-5y=-12\\10x-4y=2$

Lets cancel out the x term..

$5(-2x-5y)=-12(5)\\=-10x-25y=-60$

Now our system looks like this:

$-10x-25y=-60\\10x-4y=2$

Add.

$-29y=-58\\y=2$

plug in 2 for y

$-2x-5(2)=-12\\-2x-10=-12\\-2x=-2\\x=1$

Therefore the system is:

$(1, 2)$

If this helped consider marking brainiest.

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2 years ago

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Researchers are conducting a study in an attempt to establish a linear relationship between the number of online music video vie

Charra [1.4K]

Answer:

d. 0.0948 ± 4.032(0.0279)

Step-by-step explanation:

A 99% confidence interval for the coefficient of promotional expenditures is, First, compute the t critical value then find confidence interval.

The t critical value for the 99% confidence interval is,

The sample size is small and two-tailed test. Look in the column headed es = 0.01 and the row headed in the t distribution table by using degree of freedom is here

for (n-2=5) degree of freedom and 99% confidence ; critical t =4.032

therefore 99% confidence interval for the slope =estimated slope -/+ t*Std error

= 0.094781123 -/+ 4.032* 0.027926367 = -0.017822 to 0.207384

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3 years ago