Use the discriminant to determine the nature of the roots of the following equation.
x2 + 2x + 5 = 0
imaginary root
Double root
real and rational root
real and irrational root
Answers
Answer:
Step-by-step explanation:
disc.=b²-4ac=2²-4×1×5=4-20=-16<0
it has imaginary roots.
Related Questions
Identify the domain and range of each of the graphs below.
Domain:
Range:
Answers
Answer:
Domain → (-∞, ∞)
Range → (-∞, ∞)
Step-by-step explanation:
Domain of a function is defined by the x-values or input values of the graph.
Similarly, Range of the function is defined by the y-values or output values from the graph.
From the picture attached,
x - values for the line shown in the graph vary from negative infinity to positive infinity.
Therefore, Domain of the function will be → (-∞, ∞)
And for every x-value there is a y-value, so Range of the function will be same as domain (varying from negative infinity to positive infinity) → (-∞, ∞)
Jamal has $15.00 to spend at the concession
stand. He buys nachos for $7.50, and he wants to
purchase some Sour Straws for $1.50 each. How
many Sour Straws can Jamal purchase with the
money that he has? What is the inequality
A. 7.50-150x ≤ 15
B. 7.50+ 150x ≤ 15
C. 7.50- 150x < 15
D. 7.50+ 150x >15
Answers
Find AY. (fill in the blank)
Answers
Answer:
its 9a
Step-by-step explanation:
Solve for x. any help would be appreciated thanks
Answers
9x+47=16x+12
-12 -12
9x+35=16x
-9x -9x
35=7x
/7 /7
5=x
Two sides of a triangle measure 25 cm and
35 cm. Which of the following could be
the measure of the third side?
0 11 cm
O 6cm
O 8 cm
O 3 cm
Answers
The law of cosines find the missing side or angle
Answers
Step-by-step explanation:
[tex] \cos(x) = \frac{11}{17} \\ x = 49.68[/tex]
Answer:
[tex] \cos(x) = adj \div hyp \\ = 10 \div 17 = 0.58 \\ x = \cos { - 1 = 54.5}^{} [/tex]
....
Matthew drives 30 miles in 24 minutes. If he drove two hours in total at the same rate, how far did he go? Before you try that problem, answer the question below. How many minutes did Matthew drive in total?
Answers
Answer:
Step-by-step explanation:
When we rewrite a fraction as a decimal, are we changing the value of the fraction? hi so my teacher is asking this question on this mini quiz thing and i have a horrible headache and dont feel like doing that right now. so pls help me out
Answers
Answer:
No, you are not changing the value.
Step-by-step explanation:
Answer:
No, because then it would have different values and it wouldn't be rewriting it.
Step-by-step explanation:
Ex. 1/2. The decimal for this would be 0.5, right?
We aren't changing the value of the fraction. It is just another way of writing the value.
Hope this helped. :)
Also, I hope your headache goes away. Feel better soon. :D
2. How far is the bird from the worm? Round to the nearest whole number if necessary. (TEKS
8.7C-R)
A 60 ft
B 50 ft
50 ft
C 55 ft
D 61 ft
35 ft
Answers
I pretty sure
hope this helps
Which two represent 10 cube? *
Answers
Answer:
5 cube and 5 cube = 10 cube..??
Step-by-step explanation: ok so can i have brainiest plaease::)
what does 40 centimeters equals in meters
Answers
Answer:
Its 0.4 meters!
Step-by-step explanation:
The model represents an equation. What value of x makes the equation true?
Answers
Answer:
x=2,25=2 1/4
Step-by-step explanation:
-3x+10=5x-8
10+8=8x
x=2,25=2 1/4
Which is the better buy on potatoes?
3 lbs. for $.90
5 lbs. for $1.60
Answers
Answer:
3 pounds for 90 cents.
Step-by-step explanation:
The 5 pound bag costs 32 cents a pound
The 3 pound bag is 30 cents a pound
what does 35q = 5 equal
Answers
Answer:
q = 1/7 = 0.143
Step-by-step explanation:
does an 8 15 and 16 equal eachother
Answers
Answer:
no
Step-by-step explanation:
hope it is right
plz follow me
Someone pls help... On November 1st there were 2500 boxes in a warehouse. On December 1st there were 15% fewer boxes in the warehouse than there were on November 1st. On January 1st there were 20% more boxes in the warehouse than there were on December 1st. How many boxes were in the warehouse on January 1st.
Answers
Answer:
Nov 1st: 2500 boxes
Dec 1st: 15% fewer boxes which is 2500 x (1- [tex]\frac{15}{100}[/tex] ) = 2125
On January 1st: 20% more boxes which is 2125 x (1+ [tex]\frac{20}{100}[/tex] ) = 2550 is the number of boxes
Step-by-step explanation:
In ABC, AB = 5 feet and BC = 3 feet.
Which inequality represent all possible values for the length of AC, in feet?
1. 2 <_AC <_ 8
2. 2 < AC < 8
3. 3 <_ AC<_ 7
4. 3 < AC <7
Answers
Inequalities help us to compare two unequal expressions. The value of AC should be 2≤AC≤8, the correct option is 1.
What are inequalities?Inequalities help us to compare two unequal expressions. Also, it helps us to compare the non-equal expressions so that an equation can be formed.
It is mostly denoted by the symbol <, >, ≤, and ≥.
As per the law of triangle inequality, the sum of any two sides of the triangle must be greater than or equal to the third side, this will give three conditions,
Since the third condition is going to be true for all the whole numbers. Therefore, as per the first two conditions, the value of AC should be 2≤AC≤8.
Learn more about Inequality:
https://brainly.com/question/19491153
#SPJ2
OU
Prove algebraically that 0.5 =
Write your proof in the box, below, and use x in the working.
The concluding line has been written for you.
Therefore x =
olu
Answers
Answer:
The prove is explained below:
Step-by-step explanation:
The computation is given below:
Here we needed two equations
Let us assume x = 0.555 --------------- (1)
Now if multiplied it by 10 to the both sides
So, it would be
10x = 5.555............(2)
Now deduct equation 1 from equation 2 in order to remove the recurring decimals
(10x - x) = (5.5555 - 0.5555 )
9x = 5 (divided the both sides by 9 )
So x = 5 by 9
Write the equation of a line that is perpendicular to the given line and that passes through the given point y+ 2 = -(x - 5). (4.3) Oy=-3x+15 Oy=-3x - 9 Oy=-4x + 3 Oy=-x-11 =-
Answers
Answer:
B. y = -3x - 9
Step-by-step explanation:
Please let me know if you want me to add an explanation as to why this is the answer. I can definitely do that, I just wouldn’t want to write it if you don’t want me to :)
The equation perpendicular to the given equation is y=-3x-9. Therefore, option B is the correct answer.
Given that, the equation of the line is y+2 = 1/3 (x-5) and the coordinate point is (-4, 3).
Here, the slope is 1/3
The slope of a line perpendicular to given line is m1=-1/m2
So, the slope is m=-3
Substitute m=-3 and (x, y)=(-4, 3) in y=mx+c, we get
3=-3×(-4)+c
3=12+c
c=-9
So, the equation is y=-3x-9
Therefore, option B is the correct answer.
To learn more about the slope of a line visit:
https://brainly.com/question/14511992.
#SPJ1
In the diagram below of circle 0, diameter AB is
parallel to chord CD.
A. 110°
B. 70°
C. 55°
D. 35°
If mCD= 70, what is mAC?
Answers
Answer:
C. 55°
Step-by-step explanation:
The computation of mAC is shown below:
Given that
Diameter AB would be parallel to CD
McD = 70
Based on the attached diagram and the above information
mAC is
= (180 - 70) ÷ 2
= 55 degrees
hence, the correct option is third
Fourteen of the people signed up for the ski classes are beginners. If 56% of those signed up are beginners, how many people signed up for classes?
Answers
Answer:
25
Step-by-step explanation:
An unknown number of people signed up for the class. Let the total number of people who signed up be x.
56% of the people who signed up are beginners. 14 people are beginners.
That means that
56% of the people who signed up is 14 people.
56% of x = 14
56% * x = 14
0.56x = 14
Divide both sides by 0.56.
0.56x/0.56 = 14/0.56
x = 25
Answer: 25
Each notebook contains 60 sheets of paper. Andre has 5 notebooks. If the equation is y=5x60 then what does y stand for?
Answers
Answer:
y = the total sheets in all 5 notebooks
Step-by-step explanation:
5 = notebooks
60 = sheets
y = the total
Answer:
y=300 (how many sheets of paper 5 notebooks have)
Step-by-step explanation:
You're trying to find how many pages are in 5 notebooks. 1 notebook=60 pages2 notebook=120 pages3 notebooks=180 pages4 notebooks=240 pages5 notebooks=300 pages
Hope this helped!! :)
Brainliest?!?!
Stay safe and have a wonderful day/afternoon/night!!!
How many solutions does 5x - 3 = 5 (x - 1) have?
O A. 1 Solution
OB. Exactly 2 Solutions
OC. No Solutions
OD. Infinitely Many Solutions
Answers
Answer:
C. No solutions
Step-by-step explanation:
5x - 3 = 5 (x - 1)
5x - 3 = 5x - 5
* so they have the same slope but different y-intercepts. So they would be parallel lines and they would never intercept meaning. No Solutions!
A= 1/2 x 3.2 x 3.6=?
Answers
Answer:
5.76
Step-by-step explanation:
Multiply them together.
About how many times smaller is 6.05 x 10than 1.23 x 10?
Answers
Answer:
girl ion even kno
Step-by-step explanation:
lol
Answer:
none
Step-by-step explanation:
6.05 * 10 is about 5 times greater than 1.23 * 10, so the question is not correct.
Grey ran 2.4 times as many miles as Emory. If Emory ran 2.08 miles, how many miles did grey run?
Answers
Answer:
If Grey ran 2.4 times as many miles as Emory, then 2.08 x 2.4 = 4.992
Step-by-step explanation:
4.992
Answer:
4.992
Step-by-step explanation:
Hey there !!!
to find the answer to this problem you multiply the number of miles that grey ran to the number of miles that Emory ran:
2.4 * 2.08 = 4.992
Hope it helped !!
have a wonderful day
What would the remainder of 5672 ÷ 9 be?Please help me :(
Answers
Least to greatest
75% 0.071 0.54
Answers
Answer:
0.071, 0.54, 75%
Step-by-step explanation:
75% is 0.75, so it’s 0.071, 0.54, then 75% hope that helps and have a great day!
75%= 75/100= 0.75
%= 100
Least = 0.0071, 0.54, 0.75=greatest
So the answer is 0.0071, 0.54, 0.75
-7 4/5 + blank = -9
what is the blank
Answers
Answer:
-1 1/5
Step-by-step explanation:
-9+7 4/5
f(x) = -4x2 + 10
Find f(-2)
Answers
Answer:
f(-2) = -6
Step-by-step explanation:
In the expression, to get f(-2);
we simply substitute the value of x with -2
We have this as;
f(-2) = -4(-2)^2 + 10
f(-2) = -4(4) + 10
f(-2) = -16 + 10
f(-2) = -6