All categories

3 years ago

Multiply and Solve (6−i)(−7−9i)

Mathematics

2 answers:

ElenaW [278]3 years ago

7 0

Answer:

x = -4

x = -11/9 = -1.222

Step-by-step explanation:

(6−i)(−7−9i)

= -42 - 54i +7i + 9i^2

= -42 - 47i + 9i^2

x = -4

x = -11/9 = -1.222

brainliest please :)

alexandr1967 [171]3 years ago

5 0

- 42 - 9i^2 I Hope this helps :)

You might be interested in

(−t 4 −5t 3 −10t 2 )+(9t 3 +3t 2 −1)

klemol [59]

Answer:

$\left(-t^4-5t^3-10t^2\right)+\left(9t^3+3t^2-1\right)=-t^4+4t^3-7t^2-1$

Step-by-step explanation:

Given the expression

$\left(-t^4\:-5t^3\:-10t^2\:\right)+\left(9t^3\:+3t^2\:-1\right)$

Remove parentheses: (a)=a

$=-t^4-5t^3-10t^2+9t^3+3t^2-1$

Group like terms

$=-t^4-5t^3+9t^3-10t^2+3t^2-1$

Add similar elements

$=-t^4-5t^3+9t^3-7t^2-1$ ∵ $-10t^2+3t^2=-7t^2$

Add similar elements

$=-t^4+4t^3-7t^2-1$ ∵ $-5t^3+9t^3=4t^3$

Thus, the equivalent expression in simplified form:

$\left(-t^4-5t^3-10t^2\right)+\left(9t^3+3t^2-1\right)=-t^4+4t^3-7t^2-1$

4 0

3 years ago

If EG=10 and EF=4,then FG=?

Alchen [17]

6 0

3 years ago

Read 2 more answers

Elijah has saved $10. He wants to buy shoes for $14. That would make his money situation to be.

murzikaleks [220]

I guess he needs to save $4 more to buy the shoes

6 0

3 years ago

a man owned 75 shares of stock worth $50 each the corporation declared a dividend of 8% payable in stock how many shares did he

Arturiano [62]

Total number of shares owned is 75 shares
value of each share=$50
value of 50 shares will be:
75*50=$3750
the dividend earned
8/100×3750
=$300

Answer: $300

3 0

3 years ago

A line passes through the point (-10,8) and has a slope of 1/2.

timofeeve [1]

Answer:

the answer is y=1/2x+13

6 0

3 years ago