Find all real numbers z for which the equation (z-5)x^2-zx+5=0 only has one real solution. If you find more than one, then list the values separated by commas.

Answers

Answer 1

Step-by-step explanation:

For the quadratic equation to have 1 repeated real solution, the discriminant b² - 4ac must be zero.

=> (-z)² - 4(z - 5)(5) = 0

=> z² - 20(z - 5) = 0

=> z² - 20z + 100 = 0

=> (z - 10)² = 0

Therefore z = 10.


Related Questions

PIZZZ HURRY IM IN A RUSH .-.!!!Two sets are shown in the Venn diagram. Set N represents the natural numbers, and Set W represents the whole
numbers. in which set does the values -45 belong?

Answers

Answer:

In my opinion this is the whole w

Step-by-step explanation:

2.00llons is
equal to how
many liters

Answers

2 us liquid gallons =
7.571 liters

Explain the best you can because I’m struggling :)

Answers

Step-by-step explanation:

A. 3x+4/2 = 9.5

3x + 4/2 = 9.5........criss cross

3x+4= 9.5×2

3x = 19-4

3x = 15

x=5 ..........divide both sides by 3

B. 7+ 2x/3= 5.......criss cross

7+2x = 5 × 3

7 + 2x = 15

2x = 15-7

2x = 8......divide both sides by 2

x = 4

i need help this is cell division concept map

Answers

the picture won’t load it’s showed a white screen for minutes now

Solve for the length of the hypotenuse

Answers

Answer:

5000

Step-by-step explanation:

In a right triangle ,

[tex] {c}^{2} = {a}^{2} + {b}^{2} [/tex]

[tex] = > c = \sqrt{ {a}^{2} + {b}^{2} } [/tex]

where -

c = hypotenusea & b = the other two sides of the triangle

According to the question , let the hypotenuse of the triangle be 'c' . So ,

[tex]c = \sqrt{ {3000}^{2} + {4000}^{2} } [/tex]

[tex] = > c = \sqrt{9000000 + 16000000} [/tex]

[tex] = > c = \sqrt{25000000} = 5000[/tex]

Hence , c = 5000

Answer:

5000

Step-by-step explanation:

[tex]3000^{2}[/tex] + [tex]4000^{2}[/tex] = 25000000

[tex]\sqrt{25000000}[/tex] = 5000

What is 6.5% of 150 dollars? a tip on percentage of numbers would also be appreciated, thank you :)​

Answers

6.5% of $150 is $9.75

Matthew drives at an average speed of 62 mph for 5 hours
B) how many miles does Matthew drive

Answers

Matthew drives 310 miles

Answer:

310

Step-by-step explanation:

62 multiplied by 5 will get you the answer

What is the function that is represented by the graph shown:

Answers

Answer:

I believe its the second one

I WILL GIVE YOU BRAINLY PLSS


Evaluate m( m + n) – n, use m = 5 and n = -3
A. 7
B. 13
C. 43
D. 37

PLSS SHOW YOUR WORK PLSS

Answers

Answer:

B. 13

Step-by-step explanation:

[tex]m(m + n) - n[/tex]

[tex]m = 5 \\ n = - 3[/tex]

Substitute m = 5 and n = - 3 in the expression.

[tex]5(5 + ( - 3)) - ( - 3) \\ 5(5 - 3) + 3 \\ 5(2) + 3 \\ 10 + 3 \\ 13[/tex]

Remind that negative multiply negative must equal positive.

The answer is 13 ! :) 5(5+(-3))-(3-)= X
Distribute 5
25+(-15)-(-3)
The minus (-3) turns into a positive so you get +3 and you add it all together and get 13 :)

anyone know this, its rlly hard​

Answers

Answer:

......................................................................................................

Step-by-step explanation:

please help me on this!

Answers

Answer:

9*572=5148

Step-by-step explanation:

The Invisible Hand promotes
A. marketplace inflation
B. marketplace competition
C. marketplace monopolies
D. marketplace shortages​

Answers

The answer to this is D

Hurry!! pls answer!! Rewrite this exponential equation as a logarithmic equation.
4e1
=
16

Answers

It should be log_e(4)=x
Hello friend I am sending this answer

Patty is baking for the holidays. 3/5of her treats are cookies and 1/6of her treats are cupcakes. The rest are brownies. What fraction of her treats are brownies?

Answers

So the answer would be 7/30 because 3/5 + 1/6 = 23/30 and you add 7 to that and get 30 well that’s what I believe hope this helped

Martin has 13 liters of soda.
Each glass can hold of a liter
of soda. How many glasses can
Martin completely fill with soda?

Answers

the answer is 13 glasses

Answer:

13

Step-by-step explanation: If each glass can hold 1 liter than 13 glasses can hold 13 liters.

The equation ey = 2x is equivalent to .

Answers

Answer: y=In 2x

Step-by-step explanation:

Answer:

The equation ey = 2x is equivalent to  

✔ y = ln 2x

.

Step-by-step explanation:

You roll a dice twice.
Find the probability of getting 3 in first throw and 5 in second throw.

Answers

Answer:

1/6

Step-by-step explanation:

there are 6 faces on a dice so there's a 1 in 6 chance that you would roll a 3 on your second go there is still only a 1 out of 6 chance of getting a 5 because there is still 6 numbers you could roll on.

hope this helped

(2y^3-5y^2-4)-(4y^3+11y^2-3y+5)

Answers

-2y^3-16y^2+3y-9 is the answer

Find the measure of angle A

Answers

Answer:

it is 60 of right angle

Step-by-step explanation:

there

4x+5+13x+90=180
17x+95=180
17x=85
x=5

Three pounds of bananas cost $7How much does 1 pound of bananas cost?

Answers

Answer:

Step-by-step explanation:

3 pounds:7 dollars

1 pound: 2.33 dollars

divide 3 by 3 to find 1. divide 7 by 3.

7/3=2.333 each pound of bananas will cost $2.33

Ramona has a bag that contains candies of the same size and shape. There are 5 green candies, 4 orange candies and 3 yellow candies. She draws a candy at random, replaces it, and then draws a second candy. What is the probability that both candies will be orange?

Answers

Answer:

the answer is 1/3

Step-by-step explanation:

Hey, I don't want to bother anyone but could someone help me fill in the angle of x?

Answers

Answer:

x = 90°

Step-by-step explanation:

diagonal line = 180 = x + 90

180 - 90 = x

90 = x

therefore, x = 90°

Factor this polynomial.
-3x^2-16x- 5

Answers

Answer:

B. [tex]-(3x+1) (x+5)[/tex]

Step-by-step explanation

factored the equation to solve. Hope this helps!

Helppppp meeeee pleaseee

Answers

Letter “ E ” and letter “ F ” are the answers
Well, the answer to this question is B and F.
Also, I just want to say happy new year to you and have a fantastic rest of your day!
Also, can you please mark my answer as the brainliest answer?
Thank you!

8-2x=-3+1 solve the question

Answers

8+2= 2x
10=2x
X=10/2
X=5

ill give you brainliest if you answer fast and correctly

Answers

Answer:

the answer is 64.29% or just 64

the fraction form is 2/3

Step-by-step explanation:

Answer:

2/3 (Two-Thirds)

The percentage is also 66.6666667%, if they are asking for that.

Step-by-step explanation:

First, you add up all the numbers and get 84.

Then, you add up Friday and Saturday, to get 56.

You now have 56/84.

Simplify and get 2/3.

You are LOVED <3

Can someone help me ?!

Answers

Answer:

y<-2x-3

Step-by-step explanation:

Your first step is to find the equation of the line. You can see that the y-intercept is -3, therefore your b is -3. So now your formula looks like this:

y=mx-3

To find m, you substitute in an x value and its corresponding y value. When you do this you will get -2.

Now it looks like this:

y=-2x-3.

Now that you have the equation of the line, you can look at the inequality. Since the line is dotted, that means it is not included in the inequality. That mean it cannot contain an equal to. So the only options we have are < and >. Since the shaded area is to the left, which is the negative side, we can conclude that y<-2x-3 is the correct equation.

HOPE THAT THIS IS HELPFUL!

order the following from least to greatest 12. 55% 0.67 1.24 100%​

Answers

Answer:

0.67, 1.24, 12, 55, 100

Step-by-step explanation:

4(2a + 2) = 8(2 - 3a) whats A? please help me!!!!

Answers

Answer:

a = [tex]\frac{3}{8}[/tex]

Step-by-step explanation:

4(2a + 2) = 8(2 - 3a)

Distribute.

8a + 4 = 16 - 24a

Add 24a to each side.

32a + 4 = 16

Subtract 4 from each side.

32a = 12

Divide 32 from each side.

a = [tex]\frac{3}{8}[/tex]

Mrs.Walker would like to give each of her 32 students no less than three stickers. How many stickers must she have

Answers

Answer:

Mrs. Walker will need at least 96 stickers in order to give each of her students at least 3 stickers each.

Step-by-step explanation:

32*3=96.

96 is the minimum

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