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3 years ago

Write the equation of the line that Passes through (-9,4) and 10,-2)

Mathematics

2 answers:

adell [148]3 years ago

5 0

Answer: The first thing we need to do is find the slope--the rise over run. We can find it by using the formula:

(y2 - y1) / (x2 - x1), that is we subtract the x an y values of our two points and then divide:

(-4 - -10) / (9 - 9)

(-4 + 10) / (9 - 9)

6 / 0

We cannot divide by 0. Our slope is essentially infinity, or a straight line up and down. This means we take a look at the x-coordinate: 9. This means our equation is:

x = 9

because no matter what we use for y, x will always stay at 9

Step-by-step explanation:

also you pfp is cute as hell girl!

devlian [24]3 years ago

4 0

Answer:

y = -6/19x - 2

Step-by-step explanation:

First we need to find the slope and we can do that by using slope-intercept form [ y2-y1/x2-x1 ].

-2-4/10-(-9)

-6/19

Second we can find the y-intercept using slope intercept form [ y = mx + b], the slope, and a given point.

y = -6/19x + b

4 = -6/19(-9) + b

4 = 54/19 + b

-2 = b

Third we will input all the data we solved for back into the formula.

y = -6/19x - 2

Best of Luck!

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7. In an orchestra, the ratio of trombones to violas is 4:6. There are 9 violas. Write and solve a proportion to

yaroslaw [1]

Answer: 6 trombones

Step-by-step explanation:

We can set up a proportion.

Let x be the number of trombones there are.

$\frac{4 trombones}{6violas} = \frac{x trombones}{9 violas}$

We can cross multiply:

4*9 = 6x

6x = 36

Divide both sides by 6:

x = 6

8 0

3 years ago

Please help me with math

VARVARA [1.3K]

AnswerStatistics calculator

34,56,13,98,75

Enter values separated by commas to calculate population and sample deviations.

min13

mean55.2

median56

max98

Population

Sample

In statistics, a population is a set of similar items or events which pertains to a question or experiment.

x1=34x2=56x3=13x4=98x5=75

Concept Value Symbol or formula Calculation

Count 5 -

Sum 276 34 + 56 + 13 + 98 + 75

Min 13 - -

Max 98 - -

Range 85 98 - 13

Median 56 - -

Mode N/A - -

Mean 55.2 276

Variance 890.96 4,454.8

Standard deviation 29.849 √890.96

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

A large bakery produces cakes in an assembly line. Sergio noticed a potential defect that seems to be showing in every other cak

olya-2409 [2.1K]

Its better to choose the simple random samples, if the defect is in every other cake, a systematic random sample could miss it completely depending on what Sergio chooses for k.

Here he is taking a random sample of cakes to get a better idea of how many cakes might have this defect.

The random sample is defined as the method of choose a sample from the group of sample and each of the sample has same probability of being chosen

The systematic sample is the method of choosing the sample from the group of sample with a periodic interval.

Here Sergio noticed a potential defect that seems to be showing in every other cake, so there will be chance of missing the defect completely

Hence, to choose the defect items, the simple random sample is better than systematic random sample.

Learn more about simple random sample here

brainly.com/question/14499823

#SPJ4

4 0

1 year ago

!!!!!!!!!!!!!!!!!!!!

notsponge [240]

Option 3

The solution for given expression is $\frac{(x - 4)(x - 4)}{(x + 3)(x + 1)}$

<h3><u>Solution:</u></h3>

Given that we have to divide,

$\frac{x^2 -16}{x^2 + 5x + 6} \div \frac{x^2 + 5x + 4}{x^2 -2x - 8}$ ---- (A)

Let us first factorize each term and then solve the sum

Using $a^2 - b^2 = (a + b)(a - b)$

$x^2 -16 = x^2 - 4^2 = (x + 4)(x -4)$ ----- (1)

$x^2 + 5x + 6 = (x + 2)(x + 3)$ ----- (2)

$x^2 + 5x + 4 = (x+1)(x + 4)$ ---- (3)

$x^2 -2x - 8 = (x-4)(x + 2)$ ---- (4)

Now substituting (1), (2), (3), (4) in (A) we get,

$\frac{(x + 4)(x -4)}{(x +2)(x +3)} \div \frac{(x+1)(x+4)}{(x-4)(x +2)}$

To do division with fractions, we turn the second fraction upside down and change the division symbol to a multiplication symbol at the same time. Then we treat this as a multiplication problem, by multiplying the numerators and the denominators separately.

$\frac{(x + 4)(x -4)}{(x +2)(x +3)} \times \frac{(x - 4)(x + 2)}{(x + 1)(x + 4)}$

On cancelling terms we get,

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

Thus option 3 is correct

6 0

4 years ago

What is the product?

Bond [772]

Answer:

it is letter d or the last answer

Step-by-step explanation:

i just multiplied the 4 and -3, 3 and 1, -1 and -2, -1 and 2

6 0

3 years ago