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3 years ago

13

I need help simplifying each expression

1 answer:

Varvara68 [4.7K]3 years ago

4 0

(-6 - 5i)(1 - 3i)

you foil this like you would any other set of binomials, so you'll multiply negative 6 and 1, then -5i and 1, etc:

-6 - 5i + 9i - 15

5i and 3i simplify to -15 because 5*3 is 15, and i*i = -1

then you just add like terms:
-21 - 5i + 9i
-21 + 4i is your answer.

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the distance between City A and B is 250 Miles. On a certain wall map this is represented by a length of 1.9 ft. On the map how

Pachacha [2.7K]

Answer:

2.66 ft

Step-by-step explanation:

250/1.9=.0076

.0076×350=2.66ft

8 0

3 years ago

3 (x - 2) = 7 – (4 - x)

larisa [96]

Answer:

Isolate the variable by dividing each side by factors that don't contain the variable.

Exact Form:

x=92x=92

Decimal Form:

x=4.5x=4.5

Mixed Number Form:

x=412x=412

7 0

3 years ago

Read 2 more answers

In a company, 85% of the workers are men. If 360 people work for the company who aren't men, how many workers are there in

geniusboy [140]

If 85% are men, then (100 - 85), 15% are not men

so, 15% are not men which means that 15% are 360 = 15% of x = 360

(x = total no. of workers)

so, x = 360 × $\frac{100}{15}$ = 2400

The total number of people = <em><u>2400</u></em>

<em><u>( </u></em><em>sorry I didn't use pencil...</em><em><u>)</u></em>

4 0

3 years ago

Someone please help me i don’t understand

frutty [35]

Answer:

Answer B

Step-by-step explanation:

Write out f(x) and g(x) in a column; we will subtract g(x) from f(x):

f(x) = x^2 - 9 or f(x) = x^2 - 9

-g(x) = -(2 - x) or -g(x) = +x -2

---------------------------------

f(x) - g(x) = x^2 + x - 11 (Answer B)

6 0

3 years ago

What is the equation in slope-intercept form of a line parallel to y=−2x+5 and passes through the point (4, 0)?

ser-zykov [4K]

Parallel lines have the same slope

The equation of the line is: $y = -2x+8$

The equation is given as:

$y = -2x + 5$

The slope intercept form of an equation is:

$y = mx + b$

Where:

$m \to slope$

By comparison,

$m = -2$

The line is said to be parallel to $y = -2x + 5$ .

This means that the line has a slope of $m = -2$

The equation of the line is then calculated as:

$y = m(x - x_1) + y_1$

Where:

$(x_1,y_1) = (4,0)$

So, we have:

$y = m(x - x_1) + y_1$

Substitute values for m, x1 and y1

$y = -2(x - 4) + 0$

$y = -2(x - 4)$

Open brackets

$y = -2x+8$

Hence, the equation of the line is: $y = -2x+8$

See attachment for the graphs of $y = -2x+8$ and $y = -2x + 5$

Read more about equations of parallel lines at:

brainly.com/question/402319

8 0

3 years ago