3 years ago

Two imaginary roots A.144 B.O D.-4 C.36

Mathematics

1 answer:

Vaselesa [24]3 years ago

6 0

Answer:

D) -4 (with imaginary roots ±2i)

Step-by-step explanation:

Since you cannot take the square root of a negative number to produce a real result, the only option that has two imaginary roots is D) -4, where the two imaginary roots are 2i and -2i.

You might be interested in

the cost of old boiler is £775 per year,the new one is £1850 ,the cost of using a new boiler will be 1/5 less than the cost of u

Tanya [424]

Answer:

I think its 12.3 years

Step-by-step explanation:

a fifth of 775 is 155 and 155 x 12.3 = 1850

4 0

3 years ago

Two equal ratios are called a

Shtirlitz [24]

I think 2 equal ratios are called a <u>proportion</u>

6 0

3 years ago

Read 2 more answers

PLS ANSWER NOW WILL EARN BRAINLIEST IF RIGHT

kolbaska11 [484]

Answer:

I Know the answer because I am in k12 too.

The answer is 37.5%

Step-by-step explanation:

$80 - $50 = $30

$30 * 100 / $ 80 = 37.5%

answer: 37.5% of decrease.

5 0

3 years ago

Read 2 more answers

How are the graphs of the functions f(x) = and g(x) = related?

RSB [31]

The x variable, that is being multiplied.

4 0

3 years ago

A motorboat takes 5 hours to travel 200 miles going upstream. The return trip takes 4 hours going downstream. What is the rate o

dsp73

Answer:

rate of motorboat: b

rate of current: c

So the rate the boat travels upstream is $b - c$, and the rate it travels downstream is $b + c$

Step-by-step explanation:

d = rt

200 = (b - c)\cdot 5

200 = (b + c)\cdot 4

b - c = 40

b + c = 50

Adding these equations, we get:

2b = 90

b = 45

c = 50 - 45 = 5

<u>Therefore the rate of the boat is 45kph, and the rate of the current is 5kph</u>

Hope this helps :)

4 0

3 years ago