How many solutions does the equation 4x + 2(x - 5) = 3(2x - 4) have?
А.
no solution
B. exactly one solution
C. at least two solutions
D. infinitely many solutions

Answers

Answer 1

Answer:

C

Step-by-step explanation:

remove () and calculate the product

8x*(x-5)=3(2x-4)

distribute 8x through the ()

8x^2-40x=6x-12

move the expression to the left-hand side and change its sign

8x^2-40x-6x+12=0

collect like terms

8x^2-46x+12=0

determine the number of solutions using the discriminant D=b^2-4 a c

D=(-46)^2-4*8*12

simply the expression

D=1732

Since D>0, the quadratic equations has 2 real solutions


Related Questions

please help it’s for an assignment!

Answers

Answer:

the answer would be B: 4x=3y

Step-by-step explanation:

this is perimeter which means that you add the side lengths all together.

5x-3y+x+4y-2x+2y

then you just add the like terms

Answer:

b) 4x + 3y

Step-by-step explanation:

add all equations (perimeter = side + side + side)

P= 5x-3y + x+4y -2x+2y

combine like terms

5x + x - 2x = 4x and -3y + 4y + 2y = 3y

P = 4x + 3y

What is the value of Y?

Answers

I would say y=1.5x +8

When Aaron started, he was on page 8 (Which is the +8 part.) he reads 1.5 pages every minute (Which is the 1.5x part.)

*Hard*
Look at attachment or picture

Answers

Answer:

x = 10.5

Step-by-step explanation:

Work in the screenshots

I used a online calculator

symbolab. com

An isosceles trapezoid has a perimeter of 41 in. Its short base measures 1 inch and its longer base measures 2 inches. the two remaining sodes have the same length what is that length ?

Answers

Answer:

it is 6 inches

Step-by-step explanation:

I need help ASAP!!!!!

Answers

Answer:

y = 50

Step-by-step explanation:

Firstly, let's make an equation. We know that when y is 15, x is 3. Or, in other words, y is 5 times what x is. Therefore we can use the equation, y = 5x.

Now, just plug x into the equation.

y = 5(10)

y = 50

M<1=3x+7, m<5=5x-3. Find the value of each variable.

Answers

Answer: x=5

Step-by-step explanation:

To find the value of x, we set the measures of 1 and 5 equal to each other.

3x+7=5x-3        [subtract both sides by 5x]

-2x+7=-3           [subtract both sides by 7]

-2x=-10             [divide both sides by -2]

x=5

Now, we know that x=5.

Over the next 15 months you have to read at least 75 books. You have to read x books per month. The inequality "75 is greater than or equal to 15x" represents this situation. Solve the inequality to find the number of books you have to read per month.

Answers

Answer:

  you have to read at least 5 books per month (on average)

Step-by-step explanation:

The given inequality is incorrect. "At least 75" means "greater than or equal to 75", so the inequality should be ...

  15x ≥ 75

  x ≥ 5 . . . . . . divide by 15

You have to read at least 5 books per month.

-12x+(-4)=56
-2.1x+(-3.9)=10.8

Answers

Answer:

X=-5

X=-7

Step-by-step explanation:

-12x+(-4)=56

rewrite the equation to -12x-4=56

add 4 to both sides

-12x=60

Divide by -12 on both sides

x=-5

-2.1x+(-3.9)=10.8

-2.1x-3.9=10.8

-2.1x=14.7

divide by -2.1 on both sides

x=-7

find the x- and y- intercepts of the graph of the linear equation

3x + 6y = 12
x Intercept:
y intercept:​

Answers

Soo the x intercept is 4 and y intercept is 2

What is the value of x in the equation? 7x+3=4x-9

Answers

Answer:

X=-4

Step-by-step explanation:

the answer is x = -4

Plzzzz helllpppp if you can

Answers

Answer:

89

Step-by-step explanation:

The sum of the angles in a triangle is always 180 degrees. So if you add 50 and 41 together, you get 91. 190-91= 89 degrees.

if m<1=27 degrees find the m<4

Answers

Answer:

Can you specifiy?

Step-by-step explanation:

Sam is a manager in an office

Answers

Answer:

Sorry but this is not really a question so we can't answer it

Useing order of operations (32/8)+27-11

Answers

Answer:

20

Step-by-step explanation:

Using order of operations, we have to divide 32 by 8 first since its in parentheses, then add and subtract from left to right, so: (32/8)+27-11 = 4 + 27 - 11 = 31 - 11 = 20

See that's 6/23 is not the answer

Answers

Answer:

6/8,

Step-by-step explanation:

Answer:

You tried and that’s what matters, better luck next time. I‘lol ray to help you next time. Good Job

Which set of graphs can be used to find the solution set to 3 log2(x + 4) < 6?

Answers

Answer:

It's graph D

Step-by-step explanation:

Answer:

Graph D

Step-by-step explanation:

E D G E

The rectangles shown above are similar.
What is the measure of x?

A. 44 millimeters

B. 46 millimeters

C. 55 millimeters

D. 66 millimeters

Answers

Answer:

the answer is d 66 millimetres

Step-by-step explanation:

you have you solve it by doing multiplication and divide it by what ever number you have

Rewrite 6x-4y=20 in slope-intercept form.​

Answers

Answer:

[tex]y=\frac{3}{2} x+5[/tex]

Step-by-step explanation:

subtract 6x

-4y = -6x + 20

divide by -4

[tex]y=\frac{3}{2} x+5[/tex]

Answer:

y= 3/2x-5

Step-by-step explanation:

Slope intercept form means to solve for y. So,

6x-4y=20 (Subtract 6x)

-4y=-6x+20 (Divide by -4)

y= 3/2x-5

Hi hope your having a good day please answer this

In a scale model of a ferris wheel, the height is 8 inches. If the actual height of the wheel is 96 feet, what is the scale of the model?

A. 1 in = 12.5 ft

B. 1 in = 12 ft

C. 1 in = 16 ft

D. 1 in = 11 ft

Answers

Answer:

12 simple division

Step-by-step explanation:

Answer: A

Step-by-step explanation:

geometry enginuity two column proof-

my picture file quality sucks but hopefuly someone will know what it is.

help my grade is begging you.

Answers

Answer:

i can help but you need to explain the question

Step-by-step explanation:

Show work please 100 points plus brainliest

Answers

Answer:

You have to replace x with 5

Step-by-step explanation:

-5^4+3(5)^3+11(5)^2+5(5)-9

41 <= answer

Answer:

Replace x with 5

Step-by-step explanation:

-5^4+3(5)^3+11(5)^2+5(5)-9

41 <= answer

HELP ME ASAP
The sum of two right angles always|sometimes|never results in a straight angle. Justify your answer. (WHICH ONE IS IT???)

Answers

Answer:

always

Step-by-step explanation:

a straight line is always 180 degrees, and one right angle is always 90 degrees. if you have two right angles, it always adds up to 180 degrees, which is a straight line. therefore, the answer is always.

How many solutions do the following equations have?
Please show steps

8x + 10 = 8x - 7

Answers

Answer:

No Solutions

Step-by-step explanation:

Step 1:

8x + 10 = 8x - 7      Equation

Step 2:

10 = - 7    Subtract 8x on both sides

Step 3:

10 ≠ - 7    No Solutions

Answer:

No Solutions

Hope This Helps :)

Step-by-step explanation:

it has 8 because it got both numbers of 8

Show work please 100 points plus brainliest

Answers

Answer:

10. :)

Step-by-step explanation:

Count and fill in the missing numbers.
..., 44, 45, 46, 47, 48,

Answers

Answer: 49 50 51 ?

Step-by-step explanation:

Answer:

49

Keep adding 1

Janie is three years younger than her brother chad the sum of their ages is 27 how old is Janie

Answers

Answer:

Janie is 12

Chad is 15

Step-by-step explanation:

27 - 3 = 24

24 : 2 = 12

12 + 3 = 15 (Chad)

27 - 15 = 12 (Janie)

Janie is three years younger than her brother Chad and she is 12 years old

Janie is 3 years younger than her brother Chad.

let

Chad age = x

Janie age = x - 3

The sum of there ages is 27. Therefore,

x + x - 3 = 27

2x - 3 = 27

2x = 30

divide both sides by 2

x = 30 / 2

x = 15

Chad age = 15 years

Janie's age = 15 - 3 = 12 years

learn more about word equation here: https://brainly.com/question/10929404?referrer=searchResults

i don't understand how to solve this 136 - (-128.6) =​

Answers

Answer:

264.6

Step-by-step explanation:

Answer:

264.6

Step-by-step explanation:

ok first of all if you are subtracting a negative the it becomes a positive

136 - (-128.6)

136 + 128.6

this is what goes on in my head you don't have to do it this way but i do

100 + 100 = 200

30 + 20 = 50

6 + 8.6 = 14.6

200 + 50 + 14.6 = 264.6

What is the volume of a pencil box that is 10 cm high, 18 cm wide, and 1.6 cm long?

Answers

Answer:

288

Step-by-step explanation:

L × W × H = V10 × 18 × 1.6 = 288

I hope this helps!

A line through (-2, 1)
With slope = 1/4

Answers

Answer:

y = 1/4x + 1.5

Step-by-step explanation:

To solve a problem like this we can use the formula y - y1 = m(x - x1), in which y1 is the y coordinate, x1 is the x coordinate, and m is the slope.

Equation:

y - 1 = 1/4(x + 2)

y - 1 = 1/4x + 0.5

y = 1/4x + 1.5

Answer:

[tex]y=\frac{1}{4}x+\frac{3}{2}[/tex]

Step-by-step explanation:

A line has the following equation

[tex]y=mx+b\\\\\longrightarrow m=slope\\\\m=\frac{1}{4}\:given\\\\\longrightarrow b= constant\\\\\Rightarrow y=\frac{1}{4}x+b\\\\(-2,1)\rightarrow\:x=-2,\:y=1\\\\(1)=\frac{1}{4}(-2)+b\\\\1=-\frac{1}{2}+b\\\\b=1+\frac{1}{2}\\\\b=\frac{2}{2}+\frac{1}{2}\\\\b=\frac{3}{2}\\\\\Longrightarrow y=\frac{1}{4}x+\frac{3}{2}[/tex]

How do you summer camp there are 50 girls out of 80 campers what is the ratio of written as a fraction in simplest form

Answers

The answer is 50:805:8
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