All categories

3 years ago

Simplify the given expression.. . (7 − 3i) • (2 − i). . 4 + i. . 14 + 3i. . 11 − 13i. . 14 − 10i

2 answers:

3 0

The correct answer for this question is 11 - 13i.
This is how to answer this one:

(7 - 3i) (2 - i)
= [ (7*2) - (3i*2) - (7*i) + (3i*i) ]
Get the product of each term
= (14 -6i - 7i + 3i^2)

Group similar terms
= 14 - 13i - 3

Simplify.
= 11 - 13i

Side solution:
i = square root (-1)
i^2 = -1

sveticcg [70]3 years ago

3 0

Answer:

11 − 13i

(just took the quiz)

You might be interested in

0.90[2.25[4]+1.40[3]+6]

Helga [31]

Answer: 17.28

Step-by-step explanation:

Simplify

0.9((2.25)(4)+(1.4)(3)+6)

=(0.9)((2.25)(4)+(1.4)(3)+6)

=(0.9)((2.25)(4))+(0.9)((1.4)(3))+(0.9)(6)

=8.1+3.78+5.4

=17.28

8 0

3 years ago

Which one is the correct answer..pls HELP a answer accurately..

blagie [28]

Answer:

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

THIS IS THE LAST QUESTION IDK HOW DO SOLVE IT :(

harkovskaia [24]

Answer:

6 laps.

Step-by-step explanation:

On Monday she runs 2x + 8 miles, where x miles = the length of the trail.

On Tuesday she runs 4x + 4 miles and this is the same distance as Monday, so

2x + 8 = 4x + 4

4 = 2x

x = 2 miles which is the length of the trail.

So each day she runs 4(2) + 4 = 12 miles.

So on Saturday she runs 12/ 2 = 6 laps.

4 0

3 years ago

16. Suppose Eva has 12 3/4 pounds of flour. The day's baking will require triple that amount.

egoroff_w [7]

Answer:

Option D

Step-by-step explanation:

Given the following question:

$12 \frac{3}{4} \times3$

In order to find the answer, we have to convert the mixed number and then multiply by three, since how Eva needs triple the amount for today's baking.

$12 \frac{3}{4} \times3$
$12\frac{3}{4} =4\times12=48+3=51=\frac{51}{4}$
$3=\frac{3}{1}$
$\frac{51}{4} \times\frac{3}{1}$
$51\times3=153$
$4\times1=4$
$=\frac{153}{4}$

<u>Convert the improper fraction back into a mixed number:</u>

$\frac{153}{4}$
$\frac{153}{4} =153\div4=38\frac{1}{4}$
$=38\frac{1}{4}$

Which means Eva needs "38 1/4 pounds of flour" or option D for today's baking.

3 0

2 years ago

Help plz<br> 40x + 100 >500

serg [7]

Answer:

x > 10

Step-by-step explanation:

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

8 0

3 years ago