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3 years ago

Simplify to a+bi form (1+8i)(-3-2i)

Mathematics

1 answer:

Sonja [21]3 years ago

4 0

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Emily played cards with 3 of her friends this week.She played with tucker 3/2 of an hour , and nick 3/4 of an hour . How many ho

Paul [167]

Answer:

1 4/2

Step-by-step explanation:

3/2 + 3/4 = 9/2

9/2 into a improper fraction is 1 4/2

(i am super sorry if you i got this wrong! i tried my best good luck)

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3 years ago

Urgent math help needed plzzzzzzzzz

jeyben [28]

thriller or comedy

0.14 + 0.28 <em>"or" means to add, "and" means to multiply</em>

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Answer: C

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4 years ago

F(x)=6x^3 - 3x^2 4x- 15 for x = -3.5

Airida [17]

Answer:

Factor by grouping. (3r + 5)(r-3)

Step-by-step explanation:

8 0

4 years ago

Divide 10 into two parts in such a way that when a certain one of these parts is divided by the other and the fraction is multip

finlep [7]

Answer:

The fraction is $\frac{x}{10-x}\times x$ where the numeric value of x = 6 and 10-x =4.

Step-by-step explanation:

Given:

A number 10 we have to divide it into two parts and then when one part is divided by other with multiplication of its numerator the number obtained is 9.

Lets the number in numerator be $x$

Then

The number in denominator is $10-x$

According to the question:

⇒ $\frac{x}{10-x}\times x =9$

⇒ $\frac{x^2}{10-x} =9$

⇒ $x^2=9(10-x)$

⇒ $x^2+9x-90=0$

⇒ $x^2+15x-6x-90=0$ solving by middle term splitting.

⇒ $x(x+15)-6(x+15)=0$

⇒ $(x-6)(x+15)=0$

⇒ $x=6,-15$

Discarding the negative values.

⇒ $x=6$

Check:

So the fraction is $\frac{x}{10-x} \times x =9$

then,

⇒ $\frac{6}{10-6} \times 6 =9$

⇒ $\frac{6\times 6}{4} =9$

⇒ $\frac{36}{4}=9$

⇒ $9=9$

Left terms= Right terms

The fraction is $\frac{x}{10-x}\times x$ where the number 'x' = 6 and 10-x = 4.

6 0

3 years ago

Given the function f(x) = 2x + 61 - 4, for what values of x is f(x) = 6?

andrezito [222]

Answer: You must have wrote the equation incorrectly

Step-by-step explanation:

You wanna make f(x) equal to 6

So its 6 = 2x + 57

Subtract 57 from both sides to get -51 = 2x

Divide both sides by 2 to get -25.5

4 0

4 years ago