Solve by using the quadratic form
5r^2-8r+20=0

Answers

Answer 1

Answer:

Step-by-step explanation:

Solve By Using The Quadratic Form5r^2-8r+20=0

Related Questions

If you good with 7th grade math pls help

Answers

289 196 248 379 319 276 198 349

(in order) 196, 198, 248, 276, 289, 319, 349, 379  there are eight numbers.

--------------------------------------------------------------------------------------

196, 198, 248, 276

since the median is between 198 and 248, we must add both numbers together and divide them by two:

(198 + 248) ÷ 2

= 446/2

= 223 (first quartile)

--------------------------------------------------------------------------------------

289, 319, 349, 379

since the median is between 319 and 349, we must add both numbers together and divide them by two:

(319 + 349) ÷ 2

= 668/2

= 334 (third quartile)

--------------------------------------------------------------------------------------

Interquartile range:

IQR: 334 - 223 = 111

I double-checked my answers btw

4 and b = 5.
Evaluate the given expression when a
2a + 6b
HELP

Answers

The answer is 40
2a=2x5 and 6b=6x5
(2x5)+(6x5)
2x5=10
6x5=30
10+30=40

what is 10 divided by ten plss help am in 2nd grade!!!!!

Answers

Answer:

It will equal one:)))))))))

the answer is 1, 10/10=1

What are the solutions of 12 - x² = 0


Answers

Answer:

2sqrt(3),-2sqrt(3)

Step-by-step explanation:

12-x^2=0

-x^2=-12

x^2=12

x=-sqrt(12),sqrt(12)

x=2sqrt(3),-2sqrt(3)

Find the Volume if the height is 10 cm and radius 3
cm? hurry I’ll give 10 points!

Answers

Answer:

60cm

Step-by-step explanation:

radius of 3 ×2=6

6 is your diamiter

6×10=60your answer

Find the area of half of the circle (radius = 6)

Answers

Answer:

56.52 cm²

Step-by-step explanation:

solve for the value of p​

Answers

Answer:

43°

Step-by-step explanation:

p + 7° + 3p+ 1° = 180° ( Being linear pair)

4p + 8° = 180°

4p = 180° - 8 °

4p = 172°

p = 172° / 4

p = 43°

Hope it will help :)❤

I can't solve this problem

Answers

Answer:

13.9 mm

Step-by-step explanation:

To find the diagonal of the box, x, apply the following formula, d = √(l² + w² + h²)

Where,

d = x

l = 12 mm

w = 5 mm

h = 5 mm

Plug in the values

x = √(12² + 5² + 5²)

x = √194

x = 13.9 mm (nearest tenth)

Given tan0 = 7/24 use the Pythagorean theorem to find the value of sin 0

Answers

Answer:

Step-by-step explanation:

Don't use 0 (or any other number) to replace θ. Use a letter variable such as x.

tan(x) = 7/24

sin(x)/cos(x) = 7/24

sin(x) = 7/√(7²+24²) = 7/√625 = 7/25

A circle has a radius of 5 units. What is the diameter of the circle?

Answers

Answer:

10

Step-by-step explanation:

5x5=10

Answer:

10 units

Step-by-step explanation:

5*2=10

Here are the names of 12 orchestra conductors and their performance times in minutes for Beethoven’s Ninth Symphony: Bernstein 71.03 Furtw€angler 74.38 Leinsdorf 65.78 Ormandy 64.72 Solti 74.70 Szell 66.22 Bohm 72.68 Karajan 66.90 Masur 69.45 Rattle 69.93 Steinberg 68.62 Tennstedt 68.40 a. Check to see that normality is a reasonable assumption for the performance time distribution. b. Compute a 95% CI for the population standard deviation, and interpret the interval. c. Supposedly, classical music is 100% determined by the composer’s notation, including all timings. Based on your results, is this true or false?

Answers

Answer:

You sure this under math catagory?

Step-by-step explanation:

Pleaseeeeeeeeee helppppp me no links

Answers

Answer:

Base:12

Volume:76.8

Step-by-step explanation:

The base is 3*8/2

which is 12

and the volume is base * height so

12*6.4

=76.8

Hope this helps :) Giving me brainiest would help a lot :))

Find the amplitude of the solution
y=-4sin1/3x

Answers

Answer:

c. 4

Step-by-step explanation:

The amplitude of a graph is basically the distance from the top of the wavelength to the bottom of the wave length. When dealing with the equation itself the amplitude is represented by the initial number being multiplied to the sin cos or tan. Since the amplitude is just the distance and direction does not matter, this value is always positive. Therefore, in this scenario, the amplitude would be 4.

The drawing shows a concrete walkway around a pool. What is the total area of the concrete?

A) 165 ft2

B) 150 ft2

C) 50 ft2

D) 65 ft2

Answers

Answer & Step-by-step explanation:

The drawing shows a concrete walkway around the pool, Area of concrete is calculated as: 25 x 13 = 325; 20x 8 = 160; 325 ft^2-160 ft^2=165 ft^2.

I think the answer is A: 165 ft2

Charlotte walks home from school every day at a rate of
4 miles per hour. It takes her 30-minutes to reach
home. Her brother, Noah, runs home from the same
school every day at a rate of 6 miles per hour. How
many fewer minutes does it take Noah than Charlotte
to reach home from school each day? Be sure to
SHOW your WORK!

Answers

Answer:

Noah takes 20 minutes to get to his house, that is, 10 minutes less than Charlotte.

Step-by-step explanation:

Since Charlotte walks home from school every day at a rate of 4 miles per hour and it takes her 30-minutes to reach home, while her brother, Noah, runs home from the same school every day at a rate of 6 miles per hour, to determine how many fewer minutes does it take Noah than Charlotte to reach home from school each day the following calculation must be performed:

Charlotte:

4 mph = 4/60 = 0.0666 miles per minute

0.0666 x 30 = 2 miles

So the distance from the school to her house is 2 miles

Noah:

6/60 = 0.1 mile per minute

2 / 0.1 = 20

Thus, Noah takes 20 minutes to get to his house, that is, 10 minutes less than Charlotte.

(бх -Зу = 6
(2x-y=-5

Answers

Answer:

6-

Step-by-step explanation:

Your answer should be written in paragraph/essay format.

Any sources used should be cited at the bottom of your paper.

All answers should show you have learned something from Unit 9.  Material from other units will not be graded for this assignment.

If you are stuck, you can think about the following topics: textile mills, interchangeable parts, the Lowell System, unions, labor reform, steamboats, railroads, coal, the telegraph, and/or new inventions.

What are the solutions of the quadratic equation (x + 3)2 = 49? A. O x = 2 and x = - 10 B.O.x = 4 and x = -10 C.O x=-2 and x = -16 D.O x = 40 and x = -58​

Answers

Answer:

B. x = 4 and x = -10

Step-by-step explanation:

First, expand the equation

(x + 3)² = 49

(x + 3)(x + 3) = 49

x² + 6x + 9 = 49

Subtract 49 from both sides

x² + 6x -40 = 0

Factor

(x + 10)(x - 4) = 0

Solve

x + 10 = 0

x = -10

x - 4 = 0

x = 4

So, the correct answer is B. x = 4 and x = -10

25% of Mr. Foster's class chose an amber background for their school picture. If 6 students chose an amber background, how many students are in Mr. Foster's class?

Answers

Answer:

24 students

Step-by-step explanation:

25% of a hundred is one-fourth and because there are six students in a fourth of the whole we are multiplying four and six. 6x 4 is 24.

The percentage is calculated by dividing the required value by the total

value and multiplying by 100.

Required percentage value = a

total value = b

Percentage = a/b x 100

25% = 6 students

100% = 24 students

The total number of students in Mr. Foster's class is 24.

What is a percentage?

The percentage is calculated by dividing the required value by the total

value and multiplying by 100.

Required percentage value = a

total value = b

Percentage = a/b x 100

Example:

50% = 50/100 = 1/2

25% = 25/100 = 1/4

20% = 20/100 = 1/5

10% = 10/100 = 1/10

We have,

Number of students who chose an amber background = 6

25% of Mr. Foster's class chose an amber background for their school picture.

This means,

25% = 6

The total number of students = 100%

Now,

25% = 6 students

Multiply 4 on both sides.

4 x 25% = 4 x 6 students

100% = 24 students

Thus,

The total number of students in Mr. Foster's class is 24.

Learn more about percentages here:

https://brainly.com/question/11403063

#SPJ2

Find the slope of the line from the table below

Answers

Answer:

m = -10

Step-by-step explanation:

m = y2 - y1 / x2 - x1

m = 60-50 / -2 - -1

m = 10/ -1

m = -10

Answer:

-10

Step-by-step explanation:

We can use two points from the table to find our slope.

Remember, the slope formula is [tex]\frac{y2-y1}{x2-x1}[/tex]. We can use the points (-1,50) and (-2,60). Let's substitute the values into the formula.

[tex]\frac{60-50}{-2-(-1)}[/tex]. This gets us to [tex]\frac{10}{-1}[/tex], so our slope is -10.

Hope this helps!

A group of friends were working on a student film that had a budget of $1000. They used $370 of their budget on costumes. What percentage of their total budget did they spend on costumes?

Answers

Answer:

37%

Step-by-step explanation:

take aways the zero from 370 and one zero from 1000 then you get 37%

Which equations represents y as a linear function of x ?

A
y=x3

B
y=9x

C
y=x2

D
x=5

Answers

B because the answer has to be in y=f(x) format
i believe the answer would be B

Use a calculator to solve the equation.


−9.5x + 0.81 = −2.99

The solution is x =

Answers

Answer:

x = 0.4

Step-by-step explanation:

Answer:

x=0.4

Step-by-step explanation:

Given function:

-9.5x+0.81=-2.99find x

Combine first value by 0.81:

-9.5+0.81=-2.99-19x/2+0.81=-2.99

Subtract 0.81 both from sides:

-19x/2+0.81-0.81=-2.99-0.81

Simplifly -19x/2:

-19x/2=-3.8

Multiply all terms by similar term:

2·19x/2=2·3.8

Divide both terms by -7.6:

-19x/-19-7.6/19=0.4

Therefore, x=0.4.

State the hypothesis and the conclusion in each conditional statement.

26. If you are a basketball player, then you are at least 5’9” tall.

27. If three points lie on a line, then they are collinear.

28. If you are 13 years old, then you are a teenager.

29. 9x=36 implies x=4.

30. A =+~ B only if mA =+~mB ( I can’t type it so please look at the picture instead )

You don’t have to do all this if you don’t want to, you can help me by doing at least one.
Thank youuuuuu :) <3

Answers

All of the hypothesis things are the if statements and the rest of the phrase is the conclusion EXAMPLE: if the points lie on a line- hypothesis; then they are collinear- conclusion. Hope this helps a little bit (:

34. 6a + 11 if a = 8
59

Answers

Answer:

6a+11= 59

Step-by-step explanation:

8x6= 48

48+11= 59

Answer:

Evaluate for a = 859

( 6 ) ( 859 ) + 11

( 6 ) ( 859 ) + 11

= 5165

Hope it helps

Please mark me as the brainliest

Thank you

what is the value of X???

Answers

Answer:

x=5

Step-by-step explanation:

The angles of a trangle have to add up to 180 degrees. With that information, we can create an equation:

27+98+(10x+5)=180

125+10x+5=180

130+10x=180

-130         -130

______________

10x=50

/10   /10

x=5

Please please help me it really late we’re I am so and I Need to bring my grade up please

Answers

Answer

here :)

Step-by-step explanation:

for 1) the answers are...

x       y

-6     -10

3      -1

-7     -11

0       -4  

-3     -7

for number 2 the answers are...

x    y

6   -2

1    -7

-8  -16

-7  -15

2   -6

for number 5 the answers are...

x    y

1    -6

2    -5

-6   -13

6    -1

-9   -16

for number 6 the answers are...

x   y

8   64

7   56

6   48

9   72

-8   -64

for number 9 the answers are...

x   y

2   -3

-9  -14

8   3

-5  -10

9    4

for number 10 the answers are...

x   y

5   -15

-9   27

7    -21

0    0

-3   9

What can be said about 10 and -10?

Answers

Answer:

They are complete opposites

Step-by-step explanation:

Answer:

they are opposites

Step-by-step explanation:

Solve the inequality 7 ≥ b + -2

A. B ≤ 9
B. B ≤ 5
C. B ≥ 9
D. B ≥ 5

Answers

The answer is A, or 9

Answer:

Step-by-step explanation:

. [tex]7 \geq b + (-2) \\7+2 \geq b\\\\9 \geq b\\\\b\leq 9[/tex]

choice a

isolate b ( leave b by itself)

to do that, add 2 to the 7.

Quick please! I need it

Answers

The area of a triangle is 1/2bh, which means The second choice is correct :)

Hope this helps!!

Answer: A = 1/2 b x h

Step-by-step explanation:

helpppppp?!?!??!?!?!,!,!?!

Answers

Answer:

ok so I couldn't find what the answer was and there didn't seem to be a virus. Soooo I dunno what that link is. The account that posted it was a bot if you click on the profile it says it deactivated.

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