Mathematics High School

Solve by completing the square. x^2-10x-5=28

Answers

Answer 1

Answer:

Hey THERE

x=5+√58 or x=5−√58 is the answer

Step-by-step explanation:

x2−10x−5=28

Answer 2

Answer: look at the picture

Step-by-step explanation: hope this help :)

Solve By Completing The Square. X^2-10x-5=28

Related Questions

can anyone help with this?

Answers

The answer is B. because 0.09 would the youngest, 30% transfers to 0.3 which would be the second youngest, 1.98 would be the third youngest, and the square root of 9 is 3, which would be the oldest.

The boiling point of water is 212 degrees. To make a cup of tea, water is boiled, poured into a mug with tea leaves, and set to steep for 4 minutes. In that time, the temperature of the tea reduces to 115 degrees when it is in a room that is 68 degrees. Write an equation for the cooling curve of the tea in this particular room. Round parameters to the nearest 6th decimal place.​

Answers

Answer:ugh is there an picture maybe i can understand it better?

Step-by-step explanation:

the perimeter of a square is 7.2 meters how long is each side ?

Answers

Answer:

1.8 meters

Step-by-step explanation:

7.2÷4= 1.8

Answer:

1.8 m

Step-by-step explanation:

let side be 'a'.

perimiter of a square = 4(a)

7.2 = 4(a)

7.2/4 = a

therefore, a = 1.8 m.

Three times the sum of a number and nine is 12. Find the number.

Answers

Answer:

7

Step-by-step explanation:

3x+9=12

3x=21

x=7

Answer:

[tex] - 5[/tex]

Step-by-step explanation:

[tex]3(x + 9) = 12[/tex]

Factor as the product of two binomials.
x^2 – 100

Answers

Answer:

(x+10)(x-10)

Step-by-step explanation:

PLZ HELP ME WITH THIS QUESTION!

Answers

Answer:

15

Step-by-step explanation:

Answer:

the answer is 15

Step-by-step explanation:

Help and please make sure the answer is right? :)

Answers

Answer:

8

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

hello again lol

these are alternate interior angles so they are equal

5x + 5 = 45

5x = 40

x = 8

hi!!! what’s the area and formula for this problem??

Answers

Answer:

134.28 m²

Step-by-step explanation:

I suppose this is an isosceles triangle

tan 75° = 2 + √3 = 3.73 = h / 6      (h: height and 6 = 12/2, 1/2 of base)

h = 6 x 3.73 = 22.38

Area = (12 x 22.38) / 2 = 134.28

WILL MARK YOU BRAINLIEST

Answers

Answer:

because WXYZ is a rhombus

=> WX // YZ

=> ZWX + WZY = 180⁰

=> WZY = 180⁰ - ZWX = 180⁰ - 77⁰ = 103⁰

Prove De Morgan's law by showing that each side is a subset of the other side by considering x ∈ A⎯⎯⎯ A ¯ ∩ B⎯⎯⎯ B ¯ .

Answers

Solution :

We have to prove that [tex]$\overline{A \cup B} = \overline{A} \cap \overline{B}$[/tex]   (De-Morgan's law)

Let  [tex]$x \in \bar{A} \cap \bar{B}, $[/tex] then [tex]$x \in \bar{A}$[/tex] and [tex]$x \in \bar{B} $[/tex]

and so [tex]$x \notin \bar{A}$[/tex] and [tex]$x \notin \bar{B} $[/tex].

Thus, [tex]$x \notin A \cup B$[/tex] and so [tex]$x \in \overline{A \cup B}$[/tex]

Hence, [tex]$\bar{A} \cap \bar{B} \subset \overline{A \cup B}$[/tex]   .........(1)

Now we will show that [tex]$\overline{A \cup B} \subset \overline{A} \cap \overline{B}$[/tex]

Let [tex]$x \in \overline{A \cup B}$[/tex] ⇒ [tex]$x \notin A \cup B$[/tex]

Thus x is present neither in the set A nor in the set B, so by definition of the union of the sets, by definition of the complement.

[tex]$x \in \overline{A}$[/tex] and  [tex]$x \in \overline{B}$[/tex]

Therefore, [tex]$x \in \overline{A} \cap \overline{B}$[/tex] and we have [tex]$\overline{A \cup B} \subset \overline{A} \cap \overline{B}$[/tex]  .............(2)

From (1) and (2),

[tex]$\overline{A \cup B} = \overline{A} \cap \overline{B}$[/tex]

Hence proved.

Please help me on this!!!! ​

Answers

Answer:

670

Step-by-step explanation:

umm i used a calculator

please help again :,)) is it one solution, all solutions, or one
please show your work.

Answers

Answer:

Infinite many solutions

Step-by-step explanation:

If you graph it there is only 1 line

The price of a watch was increased by 20% to £198
What was the price before the increase?

Answers

20/100*198 it is simple
198/1.2=165
Hope it helps

Rhonda purchased a pair of shoes for $36
She had to pay 6% extra in sales tax How
much extra did Rhondo have to pay?

Answers

$36x0.06=$2.16 Rhonda payed a total of $38.16

Someone plz help me

Answers

Answer:

its the second option thats the answer

A coin is flipped 10 times and lands on heads 8 times. The theoretical probability that the next coin flip will be heads is 50%.


True or False

Answers

True

Even though it landed on heads 8/10 times, ther's still a 50% chance that it will land on tails. It doesn't change the percentage of it landing on either side. So in that case, it is true.

Hope this helps!

The statement, A coin is flipped 10 times and lands on heads 8 times. The theoretical probability that the next coin flip will be heads is 50% is True.

What is probability?

The probability of an occurrence is a figure that represents how likely it is that the event will take place. In terms of percentage notation, it is expressed as a number between 0 and 1, or between 0% and 100%.

here, we have,

we know that,

The higher the likelihood, the more likely it is that the event will take place. A definite occurrence has a chance of 1 while an impossible event has a probability of 0.

we have,

When a coin is flipped the probability of getting a heads and a tail is 50%.

Hence, without the consideration of the flips and the result the theoretical probability that the next coin flip will be heads is 50%.

The statement, A coin is flipped 10 times and lands on heads 8 times. The theoretical probability that the next coin flip will be heads is 50% is True.

Learn more about probability here:

brainly.com/question/30034780

#SPJ2

Write a formulation for the 9th term of the sequence below 5, 15, 45, 135

Answers

Answer:

a ^5 = 405

I dont really know the answer

A9=(5)(3^9-1)

Answer: 32,805

I need help Please!!!!​

Answers

i think it’s 48 inches

Answer:

48 inches

Step-by-step explanation:

[8/3](18) =48

please help asap!!!!!!!!!!!!

Answers

7853.98mm

Step-by-step explanation:

Circumference is pi times diameter so the diameter is 100 millimeters

Diameter is 2 times the radius so the radius is 50 millimeters

Area is pi times the radius squared so the area is about 7853.98 millimeters squared

Answer:

A = 795.77

Step-by-step explanation:

Using the formulas

A=πr2

C=2πr

Solving forA

A=C2

4π=1002

4·π≈795.77472

Amy has 4 pounds of ground pork to make meatballs. She uses 5/8 pound per meatball to make 6 meatballs. How many 1/8 ​-pound meatballs can amy make with the remaining ​?

Answers

6 meatballs * (⅝ pound)/meatball = 3.75 pounds
3.75 pounds was used. 0.25 remains.

0.25 pound * (1 meatball)/(⅛ pound) = 2 meatballs

PLEASE HELP ME
Find the total surface area of the figure shown.

Answers

Answer:

I think it's C but I might be

Step-by-step explanation:

Is the triangle a right triangle?use the Pythagorean theorem and its converse to explain why or why not.

Answers

Answer:

i believe it is f

Step-by-step explanation:

For a theater play, the school sold 120 blue tickets for students and 80 red tickets for adults. What percent of the tickets were sold to students?

Answers

Answer:

Step-by-step explanation:

120+80=200 the total number of tickets

120(student tickets) ÷ 200 (total tickets)= .6 =60%

Answer:

bin

Step-by-step explanation:

bghgghhshshsbabbsnajswjjegvrjrjrhrbrhrriritt

I need this done! Decent amount of points! And chance of Boeing marked brainleist! O:

Answers

Answer:63

Step-by-step explanation:

I know this its 63

Answer:

Step-by-step explanation:

a)   21 divided by 3 = 7

       answer = 7

b)21+21=42

      answer = 2

c) 7+6 = 13

   answer = 7

d) I don't know or it could be -8-8= -16   (I am not sure)

e) 3 x 30= 90

  answer= 90

f)-7-6 = -13

answer= -13

I need help. I have no idea how to do this!

Answers

Answer:

A ≈ 5.1 units²

Step-by-step explanation:

The area (A) of the triangle is calculated as

A = [tex]\frac{1}{2}[/tex] × 2 sides × sin (angle between them ) , then

A = 0.5 × 7 × 3 × sin29° ≈ 5.1 units²

URGENT PLEASE HELP
6
Solve for b.
b = ✓ [?]
IN
E
b
Enter the number that
goes beneath the
radical symbol.

Answers

Answer:

6.32

Step-by-step explanation:

6^2 - 2^2

✓40

=6.32455532

2d.p = 6.32

If using the method of completing the square to solve the quadratic equation
22 + 15x – 11 = 0, which number would have to be added to "complete the
square"?

Answers

Answer:

Step-by-step explanation:

Let's solve your equation step-by-step.

22+15x−11=0

Step 1: Simplify both sides of the equation.

22+15x−11=0

22+15x+−11=0

(15x)+(22+−11)=0(Combine Like Terms)

15x+11=0

15x+11=0

Step 2: Subtract 11 from both sides.

15x+11−11=0−11

15x=−11

Step 3: Divide both sides by 15.

15x

15

=

−11

15

x=

−11

15

Answer:

x=

−11

15

if I had 10 cookies and promised my friend to give them 2 how many cookies will i have

Answers

Answer:

8 cookies

Step-by-step explanation:

edit one:the answer was 10 cookies, so please go give the person who said 10 cookies first some thanks/brainliest.

edit two:https://brainly.com/app/profile/31525083 is the user who got it first. Check comment if you are gonna say they didn't.

Answer:

8 cookies

Step-by-step explanation:

Well, we can use simple subtraction to answer this problem. You have 10 cookies, and you give away 2, you need to subtract 10 cookies by 2:

10 - 2 = 8

Therefore, you will have 8 cookies left.

Hope this helps :)


Given that R = 6x + 3y
Find y when x = 2 and R = 14
Give your answer as a fraction in its simplest form.​

Answers

Answer:

y = 2/3

Step-by-step explanation:

14 = 6(2) + 3y

14 = 12 + 3y

2 = 3y

y = 2/3

using the parent function f(x) = 2^x, write the new function, g(x), that transforms f(x) by shifting 6 units up

Answers

Answer:

g(x) = 2^x + 6

Step-by-step explanation:

Parent function:

f(x) = 2^x

Translation 6 units up:

g(x) = f(x) + 6

or

g(x) = 2^x + 6
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