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marta [7]
3 years ago
13

Help quick, i'll give brainliest for whoever answers fastest and correctly!

Mathematics
1 answer:
sukhopar [10]3 years ago
8 0

Answer:

7+22i

Step-by-step explanation:

Since this is like a binomial, you have to apply the foil method

(-2+3i)(4-5i)=-8+10i+12i+15

(the 15 is the product of 3i*-5i)

Now, you combine like terms

-8+15=7

10i+12i=22i

so the expression in a+bi form is 7+22i

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HELP ME OUT PLEASE I RLLY NEED IT ASAP. ):
LenaWriter [7]

(a) Slope is rise over run, or change in y over change in x.

1 -> 3 ( \frac{y_{2}-y_{1}}{x_{2}-x_{1}} = \frac{4 - -8}{-1 - -5} = \frac{4 + 8}{-1 +5}= \frac{12}{4} =\frac{12}{4} )

2 -> 3 ( \frac{y_{2}-y_{1}}{x_{2}-x_{1}} = \frac{1 - 7}{0 - 2} = \frac{-6}{- 2} =\frac{6}{2} )

3 -> -1/3 ( \frac{y_{2}-y_{1}}{x_{2}-x_{1}} = \frac{-7 - -3}{6 - -6}= \frac{-7+3}{6+6}=\frac{-4}{12}=-\frac{1}{3} )

(b) If a line is parallel, the slopes will be the same. If they are perpendicular, the slopes will be are negative reciprocals of one another. If they are neither, then their slopes don't match up in any way.

1 & 2 -> Parallel

1 & 3 -> Perpendicular

2 & 3 -> Perpendicular

     Note - Since 1 & 2 are parallel, then both 1 and 2 will be perpendicular to 3!

Have a nice day!

     If this is not what you are looking for - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

5 0
3 years ago
Read 2 more answers
Lucas esta buscando piso. ¿que oferta tiene el mejor precio por m cuadrado? VILLASUR ENSANCHE: superficie: 0,75 dam cuadrados su
Jet001 [13]

Answer:

Area 1 is the best option

Step-by-step explanation:

Given Data:

Area 1 = 0.75 dam square

Price = €11,620

Area 2 = 0.009 ha

at €193,500

Area 3 = 0.84a

at €68,900

Where ha ( hectare )

a ( area )

Solution

First we convert all areas to square meter ( m² )

Area 1 = 100 * 0.75 dam square

= 75m²

Cost of area 1/ square meter

= €11,620 / 75m²

= €154.93 / square meter

Area 2 = 0.009 ha * 10,000

= 90m²

Cost of area 2 / square meter

= €193,500 / 90m²

= €2,150 / square meter

Area 3 = 0.84a * 100

= 84m²

= Cost of area 3 / square meter

= €68,900 / 84m²

= €820.23 / square meter

4 0
4 years ago
The slope of the line that passes through points -2,3 and 10,3 is
Ray Of Light [21]

Answer:

i gave you the slope and if its a function

Step-by-step explanation:

it a function  

Slope (m) = ΔYΔX= 0

θ = arctan( ΔY )ΔX= 0°

ΔX = 10 – -2 = 12

ΔY = 3 – 3 = 0

Distance (d) = √ΔX2 + ΔY2 = √144 = 12

Equation of the line:

y = 0x + 3

When x=0, y = 3

3 0
3 years ago
Read 2 more answers
Use the equation k = x÷ y to find the constant of proportionality for the set of values
Lubov Fominskaja [6]

The constant of proportionality is 1/3

and three more values are

x       1        2        3        4        5        

y       3       6        9        12       15

<h3>Variation</h3>

From the question, we are to determine the constant of proportionality

The given equation is

k = x ÷ y

From the given information,

When x = 1, y = 3

∴ k = 1 ÷ 3

k = 1/3

Thus, the constant of proportionality is 1/3

Now, we will determine the values of y for the values x = 3, x = 4, and x = 5

Since

k = x ÷ y

Then,

y = x ÷ k

When x = 3

y = 3 ÷ 1/3

y = 3 × 3

y = 9

When x = 4

y = 4 ÷ 1/3

y = 4 × 3

y = 12

When x = 5

y = 5 ÷ 1/3

y = 5 × 3

y = 15

Hence, the constant of proportionality is 1/3

and three more values are

x       1        2        3        4        5        

y       3       6        9        12        15

Learn more on Variation here: brainly.com/question/19641181

#SPJ1

3 0
3 years ago
Answer the questions and show work .
Veseljchak [2.6K]

The answer for the Y-intercept is 0,3.

6 0
4 years ago
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