Mathematics College

Solve the quadratic equation 2x^2 + 6 = 8x by graphing.
A)

x = –3, x = 1

B)

x = –3, x = –1

C)

x = –1, x = 3

D)

x = 1, x = 3

Answers

Answer 1

Answer:

D is the right ans after solving eqn we get two value of x and they are 1 and 3

Solve The Quadratic Equation 2x^2 + 6 = 8x By Graphing.A) X = 3, X = 1B) X = 3, X = 1C) X = 1, X = 3D)

Related Questions

What is the greatest common factor of 20 and 10?

Answers

Answer:

Step-by-step explanation:

The factors common to 20 and 10 are 1, 5 and 10. The largest of these is 10. That's the GCF of 20 and 10.

10 is the gcf for 20 and 10

Find the hypotenuse of right angle triangle whose sides are 6.03 units and 7.96 units also find
the relative error?

Answers

Answer:

9.99 units

Step-by-step explanation:

since hyp=√b^2+h^2

=6.03^2+7.96^2

36.3609+63.3616

√99.7225

9.9861

i.e 9.99

The hypotenuse is is 9.98 units

What is Pythagoras theorem?

The square of the length of the hypotenuse of a right triangle equals the sum of the squares of the lengths of the other two sides.

Given:

Sides are 6.03 units and 7.96 units

Using Pythagoras theorem,

H²=P²+B²

H²= 7.96²+6.03²

= 63.3616+36.3609

= 99.7225

H=9.98 units.

Hence, the hypotenuse is 9.98 units.

Learn more about Pythagoras theorem here:

https://brainly.com/question/343682

#SPJ2

he graph of the function f(x) = –(x + 3)(x – 1) is shown below. On a coordinate plane, a parabola opens down. It goes through (negative 3, 0), has a vertex at (negative 1, 4), and goes through (1, 0). What is true about the domain and range of the function? The domain is all real numbers less than or equal to 4, and the range is all real numbers such that –3 ≤ x ≤ 1. The domain is all real numbers such that –3 ≤ x ≤ 1, and the range is all real numbers less than or equal to 4. The domain is all real numbers, and the range is all real numbers less than or equal to 4. The domain is all real numbers less than or equal to 4, and the range is all real numbers.+

Answers

What is true about the domain and range of the function is; The domain is all real numbers, and the range is all real numbers less than or equal to 4.

How to find the domain of a graph function?

Let us first find the roots of the function f(x):

0 = (x - 3)(x + 1)

(x - 3) = 0

x = 3

and (x + 1) = 0

x = -1

Therefore, the roots of the function are x = 3 and x = -1.

Now, the vertex is between the roots (x = 1) and has a negative value of y (y = -4), therefore, we can say that the concavity of the parabola is upwards.

This means that the graph is decreasing until it reaches the vertex, then the graph is increasing.

Therefore, we can conclude that the graph is positive and decreasing for all real values of x where x < -1.

Read more about domain of graph function at; https://brainly.com/question/15227113

#SPJ1

Answer:

The domain is all real numbers, and the range is all real numbers less than or equal to 4.

Step-by-step explanation:

A winery has a vat with two pipes leading to it. The inlet pipe can fill the vat in 3 hours, while the outlet pipe can empty it in 10 hours. How long will it take to fill the vat if both pipes are left open?

Answers

The time it will take to fill the vat if both pipes are left open is = 4.3 hours

Calculation of time taken to fill vat

The number of pipes a vat has = 2

The time it takes the inlet pipe to fill the vat = 3hrs

The time it takes the outlet pipe to empty the vat= 10hrs

Therefore, the time it will take to fill the vat if both pipes are left open is;

1/t = 1/3-1/10

1/t = 7/30

Make t the subject of formula,

t = 30/7

t= 4.3 hours

Learn more about hours here:

https://brainly.com/question/291457

#SPJ1

PLEASE HELP ASAP!!!

Answers

Answer:

11- B

moving left 90 degrees from a

because clockwise is the right direction in a circle and counterclockwise is the left direction in a circle

12- C

moving 180 degrees left from a

13- B

moving 270 degrees right from a

14- d

moving 270 degrees left from a

hope this helps! message me if you have any further questions :)

In which function is x = 2 mapped to 32?

Answers

Answer:

[tex]f(x) = {x}^{5} [/tex]

Step-by-step explanation:

[tex]f(2) = {2}^{5} [/tex]

[tex]f(2) = 32[/tex]

Here is the graph:

What does the expression n + 3 represent?

Answers

(N+3) represents the measure of an exterior angle of a regular octadecagon. octadecagon=18

Answer:

Step-by-step explanation:

BASICALLY ANYTHING WITH 3

Markup is 25% of sale price of 86.67
what is the cost

Answers

Answer:

$ 69 . 34

Step-by-step explanation:

(1 +.25) x = 86.67

86.67 / 1.25 = x = 69.34

Minh is packing books into

boxes. The mass of one of the boxes is 20 kilograms. If the box

holds 10 books that each have the same mass, what is the mass of

each book in grams?

Answers

The mass of each book in grams if each box weighs 20 kilograms is 2000 grams

Mass of each box = 20 kilogramsTotal books in the box = 10 books

Converting kilograms to grams

1 kilograms = 1000 grams

20 kilograms = 20,000 grams

Mass of each book in grams = 20,000 grams / 10

= 2000 grams

Learn more about kilograms to grams:

https://brainly.com/question/9301317

#SPJ1

Jessica works at a restaurant. She earns $5 an hour and received $100 in tips on Saturday night. If she earned $140 total, how many hours did she work?

Answers

$140 total - $100 tips = $40

$40 / $5 per hour = 8 hours

She worked 8 hours

The answer to your question is 8 hours :))

2. √2x-5-√x+6=0(solving the following radical equations and check for extraneous solutions)

Answers

I assume the equation is

√(2x - 5) - √(x + 6) = 0

Note the domains for the root expressions:

• √(2x - 5) : 2x - 5 ≥ 0 ⇒ x ≥ 5/2

• √(x + 6) : x + 6 ≥ 0 ⇒ x ≥ -6

So any valid solution we find must be at least 5/2.

Move one term to the other side.

√(2x - 5) = √(x + 6)

Take squares.

(√(2x - 5))² = (√(x + 6))²

2x - 5 = x + 6

Solve for x :

x = 11

A square vegetable garden has side lengths of 8 feet. You plant flowers in the center portion of the garden, a square that has side lengths of 2 feet. You divide the remaining space into 4 equal sections and plant tomatoes, onions, zucchini, and peppers. What is the area of the zucchini section?

Answers

Base on the total area of the square garden and the number of plants planted on it, the area of the zucchini section is 15 feet²

How to find area of zucchini section?

Side Length of the square garden = 8 feet

Area of the garden = side length ²

= 8 feet × 8 feet

= 64 feet²

Flower portion:

Side Length = 2 feet

Area of flower portion = side length ²

= 2 feet × 2 feet

= 4 feet²

Remaining space = Area of the garden - Area of flower portion

= 64 feet² - 4 feet²

= 60 feet²

Remaining space is divided into 4 equal sections

= 60 feet² / 4

= 15 feet²

Therefore,

Tomatoes section = 15 feet²

Onions section = 15 feet²

Zucchini section = 15 feet²

Pepper section = 15 feet²

Learn more about area of a square:

https://brainly.com/question/24487155

#SPJ1

Math work math rr rrr

Answers

Answer:

The correct answer is infinite. The equation is always true.

There are two drama classesoffered at a middle school. The 8th grade class has 13 fewer students than the 7th grade class. If the total number of students in both classes is 67, how many students are in the 8th grade class?

Answers

Answer:

Class 8 has 27 and class 7 has 40

Step-by-step explanation:

8th (r) class has 13 fewer than 7th (x).
x -13 = r

Total for both classes = 67

r + x - 13 = 67
r + x = 80

80 divided by two = 40 (per class)

40 - 13 = 27

A number is divided in the ratio 3:4. If the first part is 24, find the number.

Answers

Answer:

Step-by-step explanation:

Let the other part be x.

Now,24:x=3:4

3x=96X = 96/3 = 32

Other part = 32

mark me brainlist!

7. A man leaves ⅓of his property to his son, two fifths to his wife and the remainder to his daughter. If the daughter received sh. 24,000, what was the total amount left?

Answers

Answer:

sh 90,000

Step-by-step explanation:

let x be the total amount left , then

x = [tex]\frac{1}{3}[/tex] x + [tex]\frac{2}{5}[/tex] x + 24,000

multiply through by 15 ( the LCM of 3 and 5 ) to clear the fractions

15x = 5x + 6x + 360,000

15x = 11x + 360,000 ( subtract 11x from both sides )

4x = 360,000 ( divide both sides by 4 )

x = 90,000

the total amount left was sh 90,000

Sasha is playing a game where she tosses a coin, then rolls a die. She wins if she gets heads on the coin and a 5 on the die. What is the probability she wins?
A) `1/3`,`P(H and 5) = P(H) - P(5) = 1/2-1/6=3/6-1/6=2/6` or `1/3`. That makes sense since tossing a coin and rolling a die are independent events.
B) `2/3`,`P(H and 5) = P(H) + P(5) = 1/2+1/6=3/6+1/6=4/6` or `2/3`.That makes sense since tossing a coin and rolling a die are independent events.
C) `1/12`. That makes sense since tossing a coin and rolling a die are independent events. `P(H and 5) = P(H) × P(5) = 1/2 × 1/6=1/12`
D) `12/12` or `1`. That makes sense, because she should win every time she plays.

Answers

Answer:

i hope the answer is clear to you

Step-by-step explanation:

i don’t know if I explained well but yeah here are the answers

Hope this helped!

HELP. Question 2(Multiple Choice Worth 4 points)
Solve x³ = 64
27
8
3
O
H
4/3
43

Answers

Answer:

x= 4/3

Step-by-step explanation:

Take cube root

Which ones are variable expenses? (Check all that apply)

1. loans
2. food bill
3. rent
4. electric bill

Answers

Answer:

food bill, electric bill

Step-by-step explanation:

Variable expenses change every money

Loan payments are usually fixed, the same every month

food bill - variable expense since you buy different food each month and they will cost different amounts

rent is a fixed expense

the electric bill is different every month because some months you use more electricity than others

Can someone explain me this please

Consider a space shuttle which has a mass of about 1.0 x 105 kg and circles the Earth at an altitude of about 200.0 km. Calculate the force of gravity that the space shuttle experiences

uhm i don't understand wut to put below the formula please make it clear thank you alot

Answers

Answer:

The force of gravity experienced by the shuttle would be 1.6675×10^N

Suppose that the function f is defined, for all real numbers, as follows.
-x-1 if x #-2
f(x)=
3
if x = -2
Find f(-4), f(-2), and ƒ(0).
S(-4)= 0
X
ƒ(-2) - D
ƒ(o) - D
S
?

Answers

The solutions of the function are:

When f(x) = -4, the solution is -4When f(x) = -2, the solution is -5/2When f(x) = 0, the solution is -1

How to solve for the equation

The equation is given as

[tex]\frac{3}{4} x-1\\\\[/tex]

When x = -4

3/4 * -4 -1

= -12/4 - 1

= -4

When x = -2

3/4*(-4) - 1

= -6/4 - 1/1

Take the lcm

-10/4

= -5/2

When x = 0

3/4(0) - 1

= -1

When f(x) = -4, the solution is -4

When f(x) = -2, the solution is -5/2

When f(x) = 0, the solution is -1

Answers

Answer:

The radius is 4.

Step-by-step explanation:

Concepts:

Diameter is usually defined as a straight line passing through the center of a circle or sphere and meeting the circumference or circle at each end.Radius is usually defined as a straight line extending from the center of a circle or sphere to the circumference of surface. (Half of diameter).

To figure this out:

R = 1/2 d

R = 1/2 8

R = 4

Deion has 62 m of fencing to build a four-sided fence around a rectangular plot of
land. The area of the land is 228 square meters. Solve for the dimensions (length and
width) of the field?

Answers

The dimensions of the the plot of land is a length of 19 meters and width of 12 meters.

What is an equation?

An equation is an expression that shows the relationship between two or more numbers and variables.

Let x represent the length of the field and y represent the width of the field, hence:

Deion has 62 m of fencing:

2(x + y) = 62

x + y = 31

y = 31 - x (1)

The area of the land is 228 square meters. hence:

xy = 228

x(31 - x) = 228

x² - 31x + 228 = 0

x = 12 or x = 19

when x = 12; y = 31 - 12 = 19

when x = 19; y = 31 - 19 = 12

The dimensions of the the plot of land is a length of 19 meters and width of 12 meters.

Find out more on equation at: https://brainly.com/question/2972832

#SPJ1

Which expressions below equal a rational number? Choose all that apply. 4/5 + 3/8; sqrt(100) + sqrt(5); 7sqrt(5) - sqrt(245); (4sqrt(7))(2sqrt(7)); pi * sqrt(36)

Answers

Answer:

Step-by-step explanation:

Rational number

[tex]1) \dfrac{4}{5}+\dfrac{3}{8}\\\\\dfrac{4}{5} \ \text{is a rational number} \ and \ \dfrac{3}{8} \ \text{is a rational number}\\\\\dfrac{4}{5}+\dfrac{3}{8} \ \text{is also a rational number}[/tex]

[tex]b) \sqrt{100}+\sqrt{5} = 10+\sqrt{5}\\\\\sqrt{5} \ \text{is a irrational number}. \\\\ \text{Rational number added to irrational number will result in an irrational number}\\\\10 + \sqrt{5} \ is \ not \ a \ rational \ number.[/tex]

[tex]7\sqrt{5}-\sqrt{245}=7\sqrt{5}-\sqrt{7*7*5}[/tex]

[tex]= 7\sqrt{5}-7\sqrt{5}\\\\=0\\\\\text{\bf $ 7\sqrt{5}-\sqrt{245}$ ia a rational number}[/tex]

[tex](4\sqrt{7})*(2\sqrt{7})=4*2*\sqrt{7*7}\\[/tex]

= 4*2*7

= 56

[tex]4\sqrt{7}*2\sqrt{7} \ \text{\bf is a rational number}[/tex]

An interior angle of a regular polygon has a measure of 108°. What type of polygon is it?

pentagon
hexagon
octagon
nonagon

Answers

Answer:It is a 5 sided polygon known as pentagon.

Step-by-step explanation:

Find the value of x.

Answers

[tex]3(x+4)=90\\x+4=30\\x=26[/tex]

Find the length of the indicated side of the similar figure.

Answers

Answer:

Step-by-step explanation:

in similar figures the side lengths must be proportional:

4/8 = x/10 cross multiply fractions

40 = 8x divide both sides by 8

5 = x

In which scenario can you reverse the dependent and independent variables while keeping the interpretation of the slope meaningful?

A.
As the amount of snowfall increases, the number of shovels sold increases.

B.
As number of hours spent watching TV increases, the amount spent on electricity increases.

C.
As the radius of a circle increases, circumference of the circle increases.

D.
As foot size increases, sock size increases.

Answers

Answer:

C. As the radius of a circle increases, circumference of the circle increases.

Mitosis is a process of cell reproduction in which one cell divides into two identical cells. A bacterium called E. coli often causes serious food poisoning. It can reproduce itself in 15 min.
a) Starting with one bacterium, make a table with time in
1/4-h blocks and the corresponding number of E. coli
bacteria up to 2 h of bacteria growth.
b) About how long will it take before there are 10 000 bacteria?

Answers

Answer:

I'm just a kid

Step-by-step explanation:

plssss give me brainkest

Use the spinner shown to answer the question. Assume that it is equally probable that the pointer will land on any one of the colored regions. If the pointer lands on a borderline, spin again
If the spinner is spun once, find the probability that the pointer lands in a region that is red or blue.
D
The probability that the pointer lands in a region that is red or blue is
(Type an integer or a simplified fraction.)

Answers

The probability that the pointer lands in a region that is red or blue is 1/2

How to determine the probability?

The spinner that completes the question is added as an attachment

From the attached spinner, we have:

Total section = 8Red or blue = 4

The probability is then calcuated as:

P =Red or blue/Total section

This gives

P =4/8

Evaluate

P= 1/2

Hence, the probability that the pointer lands in a region that is red or blue is 1/2

Solve the quadratic equation 2x^2 + 6 = 8x by graphing. A) x = –3, x = 1 B) x = –3, x = –1 C) x = –1, x = 3 D) x = 1, x = 3

Answers

Related Questions

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Answers

Solve the quadratic equation 2x^2 + 6 = 8x by graphing.
A)

x = –3, x = 1

B)

x = –3, x = –1

C)

x = –1, x = 3

D)

x = 1, x = 3