Which value of b will cause the quadratic equation x2 + bx + 5 = 0 to have two real number solutions? –5 –3 3 4

Answers

Answer 1

Answer:

-5

Step-by-step explanation:

For a quadratic equation to have two real number solutions, the discriminant must be positive. The discriminant of a quadratic equation is:

[tex]b^2-4ac[/tex]

This means that b^2 must be larger than 4ac. Since in this case 4ac is 4(1)(5)=20, b must be -5 out of the answer choices given. Hope this helps!

Answer 2

Answer:

A. -5

Step-by-step explanation:


Related Questions

I’m also stuck on this .

Answers

Answer:

It's given that AB = AC and BN = NC. Also, AN = NA because of the reflexive property. So the answer to the blank is congruent. (This is because of the SSS principle.)

Answer:

bardikikinouko is the answer

Step-by-step explanation:

Answer the questions for 9 points and brainliest
What is the median of the data

Answers

Answer:

40

Step-by-step explanation:

The median is the line in the middle of the box

40 is  the median

We have enough material to build a fence around a station
that has a perimeter of 180 feet. The width of the rectangular
space must be 30 feet. What must the length be?
1: Drag the correct number of strips to build the model.
P
1
-
-
-
-
1
W

Answers

Answer:

[tex]60ft[/tex]

Step-by-step explanation:

Use the formula for the perimeter of a rectangle.

[tex]P=2l+2w[/tex]

[tex]180=2l+2(30)[/tex]

[tex]180=2l+60[/tex]

[tex]180-60=2l[/tex]

[tex]120=2l[/tex]

[tex]\frac{2l}{2}=\frac{120}{2}[/tex]

[tex]l=60[/tex]

PLZ I need help, it's URGENT!

I don't know if my answers for problems 1-3 are correct, can someone help me please. Thx

Answers

#2 is correct 10x+35

x-y+z for x= 18,y=6,z=1

Answers

Answer:

We have been given the equation: x+y+z. Now these are variables. Thus, we have to fill in the values given: where x = 18, y = 6 and z = 1. Let's fill these values in.

x+y+z

= 18+6+1

= 18+(7)

= 25

Hope it Helps. Good luck on your assignment! (brainliest if possible)

Answer:

[tex] = 25[/tex]

Step-by-step explanation:

[tex]x + y + z[/tex]

Given that,

[tex]x = 18 \\ y = 6 \\ z = 1[/tex]

Let's solve

[tex]x + y + z \\ 18 + 6 + 1 \\ 24 + 1 \\ = 25[/tex]

hope this helps

brainliest appreciated

good luck! have a nice day!

Not sure how to do these problems.

Answers

Answer:

5) 64

6) 39

Step-by-step explanation:

30 POINTS!!!!Twice the sum of a number and eleven is more than negative two. Boundary point:



Answers

Answer:

2(x + 11) > -2

_________________________________________________________

I feel like we are missing information here, can you comment it down below.

Answer

13

Step-by-step explanation:

Write the equation of the line parallel to y = (3/5)x -9 and goes through the point
(-3, 8).
y + 3 = (-3/5)(x +5)

y + 8 = (5/3)(x - 3)

y - 3 = (3/5)(X + 8)

y - 8 = (3/5)(x + 3)

Answers

Answer:

y - 8 = (3/5)(x + 3)

Step-by-step explanation:

Find the volume. SHOW WORK

Answers

Answer:

827.39

Step-by-step explanation:

Volume = L X W X H

So 6.2 X 8.5 X 15.7

6.2 X 8.5 = 52.7

52.7 X 15.7 = 827.39

So the volume is 827.39

Answer:

413.695


Explanation:


V = 0.5 X b X a X h

how to solve x - 7 = -13

Answers

Answer:

x = -6

Step-by-step explanation:

to solve this you can just add 7 to both sides of the equation.

x -+7 = -13

  +7      +7

x = -6

this works because since it puts the x by itself, the other side of the equation is then equal to x and typically in equations with variables you solve for the variables.

hope it helps!

URGENTTT!!!!! Which of the following graphed relations does not represent a function?

Answers

Answer:

D

Step-by-step explanation:

last one.

if a vertical line cuts the curve at more than one points ,then it is not a function.

Answer:

I agree that it is D

Step-by-step explanation:


What is one possible set of dimensions of a cone that has the same volume as the cylinder? Explain
your reasoning​

Answers

Answer:

Cone that has 3 times the height, but the same base

Step-by-step explanation:

The formula for cone's volume is 1/3bh while cylinder is just bh

Andrew is working on his homework. One of the questions ask What is the next number is the pattern? 1,1,2,3,5,8.....? What kind of reasoning should Andrew use to find the answer?

A. Law of detachment
B. Syllogism
C. Inductive reasoning
D. Seductive reasoning

Please help me with this

Answers

Answer:

inductive reasoning

Step-by-step explanation:

Answer:

Inductive Reasoning

Step-by-step explanation:

Collecting lots of data to make a conjecture suggests one kind of reasoning.

WILL GIVE BRAINLIEST AND 30 POINTS! Simplify −3 +i over 7 + i . First, multiply both the numerator and denominator by A. -3 + i B. -3 -i C. 7 + i D. 7-1 Hint: C is incorrect.

Answers

You have (-3 +i)/(7 + i) so you need to remove the i from the numerator, so you have to multiply by 7-i and you get

(-22 + 4i)/50 which can be simplified to

(-11 + 2i)/25

Answer:

Step-by-step explanation:

What you are trying to do in this question is get rid of the i in the denominator. To do that you must multiply top and bottom by the conjugate of 7 + i

The conjugate is 7 - i

D if correct if you just made a typo. Otherwise there is no answer.

( - 3 + i ) * (7 - i)

=============

(7 + i ) ( 7 - i)

( - 3 + i ) * (7 - i)

=============

49 - i^2

( - 3 + i ) * (7 - i)

=============

49 + 1

( - 3 + i ) * (7 - i)

=============

50

I'll let you work out the numerator. If you get (-2 + i)/5 you are correct.

I have no idea what im doing, can someone please help me? ASAP!!!! Use the pythagorean theorem to find the missing slide.

Answers

Answer:

1. b=√56

Step-by-step explanation:

1. Pythagorean therom states a²+b²=c² and in number 1 we are given the c or the hypotenuse so plugging in the values we know 13²+b²=15²

which equals 169+b²=225 subtract 169 from both sides and we get b²=56

square root both sides and we get b=√56

What is 12.5÷2.4 and what are the steps

Answers

Answer:

5.2083bar

Step-by-step explanation:

Answer:

5.208333333

Step-by-step explanation:

divied 12.5 by 2.4

951/3 i dot know because it is to hard

Answers

Answer:

317

Step-by-step explanation:

951/ 3 is 317

for this problem you can use a calculator, or long division.

find the slope of the line that passses thruogh 6,10 and 4,5

Answers

Answer:

2.5

Step-by-step explanation:

In the pic below

the median and mean
PLZ HELP

Answers

Step-by-step explanation:

Data Set A: 14, 21, 24, 28, 28, 35

Data Set B: 18, 19, 21, 25, 29,32

Median:

Data Set A = 26

24 + 28 = 52

52/2 = 26

Data Set B = 23

21 + 25 = 46

46/2 = 23

Mean:

Data Set A = 25

14 + 21 + 24 + 28 + 28 + 35 = 150

150/6 = 25

Data Set B = 24

18 + 19 + 21 + 25 + 29 + 32 = 144

144/6 = 24

if you're good at parabolas please help meeeee

Find the equation of the following parabola

Answers

Answer:

Step-by-step explanation:

it  is symmetric about y-axis and its axis is x=0

and vertex is (0,2)

so parabola is y=a(x-0)²+2

(2,4) lies on it.

4=a(2)²+2

4a=2

a=1/2

so y=1/2 x²+2

Hellllp someone please

Answers

Answer:

296

Explanation:

To solve this problem, subtract 128 from 424.

424 - 128

296

Therefore, Jacobs total score is 296 after he loses 128 points from 424 points.

Answer: 296 points

Step-by-step explanation:

424 - 128 = 296

Directions - Find the degree of the monomial.
-4xyz~3
Degree =

Answers

Answer:

5

Step-by-step explanation:

To find the degree of a monomial, add the values of all the exponents together. In this example, x and y both have an exponent of 1. the exponents of x + y + z is 1 + 1 + 3. The degree is 5. Hope this helps!

Find the medium of the following set of data. Round to the nearest 10th if necessary 26.1,8.4,11.4,44.1,32.3,46.41,18.5,20,9.3,19.6

Answers

Answer:

19.8

Step-by-step explanation:

You have to first put the numbers into ascending order:

8.4, 9.3, 11.4, 18.5, 19.6, 20, 26.1, 32.3, 44.1, 46.41.

Because there is an even amount of numbers, you end up with 19.6 and 20.

The in between of 19.6 and 20 is 19.8.

(You can work this out by adding the two numbers together and then dividing by two if you have to.)

Need by like 10 minutes

Answers

Answer:

The final answer is [tex]n > -1[/tex], which would be the first choice.

Step-by-step explanation:

-Solve the inequality:

[tex]-6n + 5 < 11[/tex]

-Subtract both sides by [tex]5[/tex]:

[tex]-6n + 5 - 5 < 11 - 5[/tex]

[tex]-6n < 6[/tex]

-When you are dividing by a negative number, which is [tex]-6[/tex], the inequality sign would change:

[tex]\frac{-6n}{-6} < \frac{6}{-6}[/tex]

[tex]n > -1[/tex]

So, the final answer would be [tex]n > -1[/tex].

Find x in the following right triangle.

Answers

Answer: 15

Step-by-step explanation: I used the pythagorean theorem. X is a, 8 is b, and 17 is c. The squares of a and b added together are c. So I got 15.

Answer:

x=15

Step-by-step explanation:

First, you are going to find a Pythagorean Triple. As you can see from the picture you have provided, 17 ft is the longest side. So, I squared 17 and got 289. I did this because I am using the Pythagorean Theorem (a^2+b^2=c^2). Then, I squared 8 and got 64. Then, still following the Pythagorean Theorem, I subtracted 64 from 289. I got 225. Then, I found the square root of 225. I got 15. So, x=15.

A city has 4 new houses for every 9 old houses. If there are 28 new houses in the city, how many old houses are there?
A. 61
B. 63
C. 67
D. 65

Answers

The answer is B because 4 X 7 is 28 so 9 times 7 is 63

Is there an easy way to solve (5x - 8y +7z) + (6y - 4x - 3z)???

I'll mark you as brainliest if you help me

Translation to French/Francais
Existe-t-il un moyen facile de résoudre (5x - 8y + 7z) + (6y - 4x - 3z) ???

Je te marquerai comme le plus intelligent si tu m'aides

Translation to Russian
Есть ли простой способ решить (5x - 8y + 7z) + (6y - 4x - 3z) ???

Я отмечу тебя как самого умного, если ты поможешь мне
Translation to Tamil
(5x - 8y + 7z) + (6y - 4x - 3z) தீர்க்க எளிதான வழி இருக்கிறதா ???

நீங்கள் எனக்கு உதவி செய்தால் நான் உங்களை மூளையாகக் குறிப்பேன்

Answers

______________________________

Hey!!

Solution,

(5x-8y+7z)+(6y-4x-3z)

= 5x-8y+7z+6y-4x-3z

= 5x-4x-8y+6y+7z-3z

= x-2y+4z

Hope it helps..

Good luck on your assignment

_____________________________

Consider the following linear system.

Answers

Answer:

k= 10

Step-by-step explanation:

2x - 5y = 15

ky = 20 +4x

Solve the first equation for  y

-5y = -2x +15

Multiply by -2

10y = 4x - 30

If k = 10 then the slopes are the same, but the y intercepts are different.

The lines are parallel.  They will never intersect, and they have no solution

Answer:

D

Step-by-step explanation:

- 5y = - 2x +15

10y = 4x - 30

if k = 10, then the y intercepts are different, and the lines--being parallel--don't ever meet, so k = 10 would result in 0 solutions.

Hope this helps!


Which shows the pre-image of quadrilateral W'X'Y'Z' before the figure was rotated according to the rule (x,y) → (-x, -y)?
у
6
5
Z
Y'
4
3
X
2
1
х
1. 2. 3. 4. 5. 6
6.-5.4-3-2-11
-2
5
LE
Ty​

Answers

Answer:

W(-2, -3), X(-6, -3) , Y(-6, -4) and Z(-3, -5)

Step-by-step explanation:

In the figure attached, the quadrilateral W'X'Y'Z'  is shown. Its coordinates are W'(2, 3), X'(6, 3), Y'(6, 4) and Z'(3, 5). Transforming these points according to the rule (x,y) → (-x, -y) we can get the pre-image, quadrilateral WXYZ, as follows:

W'(2, 3) -> W(-2, -3)

X'(6, 3) -> X(-6, -3)

Y'(6, 4) -> Y(-6, -4)

Z'(3, 5) -> Z(-3, -5)

Answer:

the answer is A

Step-by-step explanation:

Mark me brainliest

Please answer the question stated below

Answers

Answer:

2968

Step-by-step explanation:

First make 112% into a decimal, now its 1.12, add all the scooters' sales from all years and multiply by 1.12 then add that number to the total sales of the scooters

Answer:

725 + 579 + 696 = 2000 (What a coincidence)

112% = 112 / 100 = 1.12

Multiply the increase

2000 x 1.12 = 2240

2240 is the amount of scooters sold.

Step-by-step explanation:

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