Solve 2x^2 +16x+50=0

Answers

Answer 1

Answer:

$2x^2 +16x+50=0\ \ \ \ \ |:2\n\nx^2+8x+25=0\n\nx^2+2\cdot x\cdot4+25=0\ \ \ \ |+4^2\n\n\underbrace{x^2+2\cdot x\cdot4+4^2}_((a+b)^2=a^2+2ab+b^2)+25=4^2\ \ \ \ \ |-25\n\n(x+4)^2=16-25\n\n(x+4)^2=-9 < 0-NO\ REAL\ SOLUTION$

$COMPLEX\ SOLUTIONS\n\n(x+4)^2=-9\to x+4=\pm√(-9)\n\nx+4=-3i\ \vee\ x+4=3i\ \ \ \ |-4\n\nx=-4-3i\ \vee\ x=-4+3i$

Related Questions

Write p5/p3 using a positive exponent
36 is 90% of what number
What is the mean of 13,7,8 an 4
Which is the correct answer?
If a normal distribution has a mean of 104 and a standard deviation of 4 what is the z score for a value of 110

What is the given function rule f(x)=x^2-5x=1 is the output of f(-3)

Answers

Answer:

i think it would be 25.

Step-by-step explanation:

the answer ur looking for is 25

Tell if it wrong or right and help me in the last one if its wrong solve it

Answers

E is wrong. It only says twelve but it is a square and squares have the same side so u would really do twelve times twelve and get 144. And also I got 360 on the challenge one because u would split the irregular figure and you would do ten times nine equals ninety then nine times thirty equals 270. Then add it and you old get 360 m2

ok i'll help u
c is wrong
and the rest are right

What is the value of 8/36 in lowest terms ?

Answers

Just simplify :

Highest is 4

= 2/9 is the answer!

Hope that helped!!

Simplify:

8/36=4/18=2/9=0.22222(repeating)

Your answer would be 2/9 or 0.22222(etc.).

I hope this helps :)

Find the value of z

Answers

Answer:

C. 50

Step-by-step explanation:

We are given ΔABC with an altitude BD as shown in the figure.

As it is known that,

'When an altitude is drawn from a right angle of a triangle, then all the three triangles are congruent.'

So, we get that ΔABC ≅ ΔABD ≅ CBD.

Since, the triangles are congruent, their corresponding sides and angles will be congruent.

Moreover, the ratio of the sides will be equal.

So, we get from ΔABC ≅ ΔABD,

$(AD)/(AB)=(AB)/(AC)$

i.e. $AD=(AB* AB)/(AC)$

i.e. $18=(30* 30)/(z)$

i.e. $18=(900)/(z)$

i.e. $z=(900)/(18)$

i.e. z = 50.

Hence, the value of z is 50.

Michael had $550 in his savings account. He took out $30.75 every month for one year. What is the net change in Michael’s account balance following these withdrawals?

Answers

The net change in Michael's account balance after withdrawals of $30.75 for 12 months is $181.

What is an arithmetic operation?

The four fundamentaloperations of arithmetic are addition, subtract, multiply, and division of two or more numbers. Included in them is the study of integers, especially the order of operations, which is important for all other aspects of mathematics, notably algebra, information management, and geometry.

From the data given in the question,

Michael has $550 in saving account.

Per month withdrawal by Michael is $30.75

Withdrawal for 12 months = $30.75 × 12 = $369.

Change in Michael's account balance = ($550 - $369) = $181

Therefore, the change will be equal to $181.

To know more about arithmetic operation:

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Answer:

The answer is -$369.00

Step-by-step explanation:

30.75 x 12 = 369

They are taking away from his account therefor we make it negative.

$550-$369 is the net change in his account balance.

11 is what percent of 55

Answers

The number that is 20 percent of 55 is 11.

We have,

To find what percent 11 is of 55, we can set up the following proportion:

11/55 = x/100

To solve for x, we can cross-multiply:

11 x 100 = 55 x x

1100 = 55x

Now we can divide both sides of the equation by 55:

1100/55 = x

Simplifying, we get:

20 = x

Therefore,

11 is 20% of 55.

Learn more about percentages here:

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11 x
55 100
20

11 times 100/55=20

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