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3 years ago

How many real-number solutions does 4x^2+2x+5=0 have

Mathematics

1 answer:

Elis [28]3 years ago

4 0

Answer: Two solutions

Step-by-step explanation:

1. x =(-2-√-76)/-8=(1+i√ 19 )/4= 0.2500-1.0897i

2. x =(-2+√-76)/-8=(1-i√ 19 )/4= 0.2500+1.0897i

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9328553.99 multiply by 10 the decimal will move one place to the left or two places to the left or one place to the right or two

VARVARA [1.3K]

93285539.900000000000

7 0

3 years ago

Tex's Taco Truck serves tacos on either hard or soft shells. Yesterday, Tex's Taco Truck sold 5 hard-shell tacos for every 2 sof

Nady [450]

Answer:

65 hard-shells

26 soft shells

Step-by-step explanation:

5 x 13 = 65

2 x 13 = 26

65 - 26 = 39

7 0

3 years ago

6 to the power of 2/3 divided by 6 to the power of 1/n. what is n?

Likurg_2 [28]

Answer:

I think that it might be two.

Step-by-step explanation:

8 0

2 years ago

Someone please help me :'(

eimsori [14]

Hello,

Let's assume v=the normal bicycling speed with no wind
and t the same amount of time...

60=(v+2)*t (1)
48=(v-2)*t (2)

(1)/(2)==>60/48=(v+2)/(v-2)

==>5(v-2)=4(v+2)
==>5v-4v=8+10
==>v=18 (mi/h)

8 0

3 years ago

Lim x->-5(((1)/(5)+(1)/(x))/(10+2x))=<br><br>correct answer 1/10x = -1/50<br><br>explain:

slava [35]

Given:

The limit problem is:

$lim_{x\to -5}\dfrac{\dfrac{1}{5}+\dfrac{1}{x}}{10+2x}$

To find:

The value of the given limit problem.

Solution:

We have,

$lim_{x\to -5}\dfrac{\dfrac{1}{5}+\dfrac{1}{x}}{10+2x}$

It can be written as:

$=lim_{x\to -5}\dfrac{\dfrac{x+5}{5x}}{2(5+x)}$

$=lim_{x\to -5}\dfrac{x+5}{5x}\times \dfrac{1}{2(5+x)}$

$=lim_{x\to -5}\dfrac{1}{5x\times 2}$

$=lim_{x\to -5}\dfrac{1}{10x}$

Applying limit, we get

$lim_{x\to -5}\dfrac{1}{10x}=\dfrac{1}{10(-5)}$

$lim_{x\to -5}\dfrac{1}{10x}=\dfrac{1}{-50}$

Therefore, the value of given limit problem is $-\dfrac{1}{50}$ .

6 0

3 years ago