Mathematics Middle School

Factor the quadratic expression completely: 15x^2 - 4x -4
WHY IS THIS SO HARD !!!!!

Answers

Answer 1

Step-by-step explanation:

We can rewrite as 15x² + 6x - 10x - 4. The first two and last two terms have common factors so this turns into 3x (5x + 2) - 2 (5x + 2). This will then become (5x + 2)(3x - 2).

Answer 2

Answer:

(-2 + -5x)(2 + -3x)

Simplifying

15x2 + -4x + -4

Reorder the terms:

-4 + -4x + 15x2

Factor a trinomial.

(-2 + -5x)(2 + -3x)

Final result:

(-2 + -5x)(2 + -3x)

Can i get Brainlest??? Plzzz :D

Related Questions

Help plzz and dont give me a file to look at and I would like the correct answer

Help plzz and dont give me a file to look at and I would like the correct answer

Answers

Answer:

70+(8x+30)=180

-70              -70

8x+30=110

  -30     -30

8x=80

x=10

Step-by-step explanation:

hope that helped! have a great day or night :)

If the pattern in the table is extended to represent more equivalent ratios for 2:6, which pair of numbers would be in the columns? A multiplication table. In the column labeled 2, the numbers 2, 4, 6, 8, 10, 12, 14, 16, and 18 are highlighted. In the column labeled 6, the numbers 6, 12, 18, 24, 30, 36, 42, 48, and 54 are highlighted. 20 would be in the column for 2, and 60 would be in the column for 6. 20 would be in the column for 6, and 60 would be in the column for 2. 20 would be in the column for 2, and 56 would be in the column for 6. 20 would be in the column for 6, and 56 would be in the column for 2.

Answers

Answer: 65

Step-by-step explanation:

Answer: 20 would be in the column for 2, and 60 would be in the column for 6.

Step-by-step explanation:

-6(-n+4)=18

this is for my friend lol i’m helping him w his assignment

Answers

Answer:

-6(-n+4)=18

6n-24=18

6n-24+24=18+24

6n=42

n=7

Step-by-step explanation:

The length of the base of a parallelogram is 21 inches. The parallelogram has an area of 357 square inches. What is the height of the parallelogram? Enter your answer in the box.

___inches.​

Answers

The height of the parallelogram is 17 inches.

What is Parallelogram?

Parallelogram is a type of polygon with four sides, four angles and four vertices. It is a type of Quadrilateral.

Opposite sides are parallel, and the opposite sides and opposite angles are equal.

Given that,

Length of the base of the parallelogram = 21 inches

Area of the parallelogram = 357 square inches

We have to find the height of it.

Area of a parallelogram = Base length × Height

Let h be the height.

21 × h = 357

h = 357 / 21

h = 17 inches

Hence the height of the parallelogram is 17 inches.

Learn more about Parallelogram here :

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Answer: I know I'm late but the answer is 17, you simply divide 357 and 21 to get 17.

Please help!! I need 1-6 answered!! I'll give brainliest!!

Please help!! I need 1-6 answered!! I'll give brainliest!!

Answers

Step-by-step explanation:

constant = y / X = 11 /2k =2 / - 10 = - 1 / 5box C .... : where y / X = 1 6 ÷ 1/ 4 = 64y / X = 3/7 ÷ 3 =I / 7 So, y= 1/7 Xy/ X= 21 /6 = 7 / 2 so, y = 7 / 2 XBox B

Answer:11/2

-1/5

64

1/7x

7/2x

B

Step-by-step explanation:

19. If m<8=115 degrees, what is m<5?

19. If m&lt;8=115 degrees, what is m&lt;5?

Answers

Answer: The answer is 115<

Step-by-step explanation:

M<8 and m<5 are corresponding angles

115< is the answer!

You go to see family in another city. So far you have gone 120 miles. The total trip is 360 miles. What fraction of the total trip, in lowest terms, has been traveled?




a.12/36
b.2/3
c.3/4
d.1/3





for 20 points please help

Answers

Answer:

d. \(\frac{1}{3}\)

Step-by-step explanation:

\(\frac{120}{360} =\frac{1}{3}\)

x-2y=3, x^2-2y=3, x^2-2xy+4y^2=11, find the value of x^2y-2xy^2

Answers

This is a system of three equations with two unknowns, x and y. To solve it, we can use the method of elimination. First, we can eliminate y by subtracting the first equation from the second equation:

x^2-2y=3 - (x-2y=3) => x^2-x=0

Then we can factor the resulting equation and find the values of x:

x^2-x=0 => x(x-1)=0 => x=0 or x=1

Next, we can substitute these values of x into any of the original equations and find the corresponding values of y. For example, using the first equation:

x-2y=3 => 0-2y=3 => y=-3/2 when x=0 x-2y=3 => 1-2y=3 => y=-1 when x=1

Finally, we can substitute these values of x and y into the expression x2y-2xy2 and evaluate it:

x2y-2xy2 => 02(-3/2)-2(0)(-3/2)2 => 0 when x=0 and y=-3/2 x2y-2xy2 => 12(-1)-2(1)(-1)2 => -3 when x=1 and y=-1

Therefore, the value of x2y-2xy2 can be either 0 or -3 depending on the values of x and y.

Honestly i doent even know

Someone help, please

Drag the tiles to the correct boxes to complete the pairs.
Evaluate each expression and match it to the correct solution.

Someone help, pleaseDrag the tiles to the correct boxes to complete the pairs.Evaluate each expression

Answers

\((\frac{1}{2}\times\frac{2}{7})\div\frac{4}{3}=\frac{3}{28}\)\((\frac{1}{2}\div\frac{2}{7})\times\frac{4}{3}=\frac{7}{3}\)\((\frac{1}{2}\div\frac{2}{7})\div\frac{4}{3}=\frac{21}{16}\)

\((\frac{1}{2}\times\frac{2}{7})\times\frac{4}{3}=\frac{4}{21}\)

3/28

7/3

21/16

4/21

Hope this helps

smb help me
which 3 sides lengths BEST describes the triangle in the diagram

smb help me which 3 sides lengths BEST describes the triangle in the diagram

Answers

Answer:

C: 5cm, 12cm, and 13 cm :)

Step-by-step explanation:

C would be the best answer.

I need help, please quickly

I need help, please quickly

Answers

Answer: The ratio is 18:3

Step-by-step explanation:

Answer:  6 to 1

Step-by-step explanation:

A ratio refers to a fraction. In this case the question asks how many players to coaches there are.

The word "to" means that is where the fraction bar goes.

Players/Coaches

There are 18 players and 3 coaches.

18/3

18 can be divided by 3, 6 times so the fraction can be simplified to

6/1 meaning there are 6 players for every coach.

Can someone help me out? :)

Can someone help me out? :)

Answers

Answer:

x=2

Step-by-step explanation:

9 x 5= 45

55-45=10

10/5=2

x=2

Answer:

X = 8

Step-by-step explanation:

Maria draws △PQR. Then she applies a dilation with scale factor 14 and center of dilation P to the triangle. Next, she translates the image 2 centimeters up and 3 centimeters right. She labels the final image as △XYZ.

Which of the following must be true about △PQR and △XYZ?


△PQR and △XYZ are similar but not congruent.

△PQR and △XYZ are congruent but not similar.

△PQR and △XYZ are neither similar nor congruent.

△PQR and △XYZ are congruent and similar.

Answers

Answer:

△PQR and △XYZ are similar but not congruent.

Step-by-step explanation:

When Maria dilated the triangle the size changed and so they can't be congruent. But it wouldn't have changed it's shape, so it'll be similar.

Answer: △PQR and △XYZ are similar but not congruent.

Step-by-step explanation:

Three years ago, Sherman was twice as old as Clive. If Clive’s present age is c, which expression represents Sherman’s present age in terms of Clive’s age?

Answers

Answer:

the Sherman expression will be 2c

Jason has sport cards in his pocket. He has three football cards, one wrestling card and two baseball cards. If Jason reaches into his pocket and selects one card, what is the probability he will get a baseball card? Show your answer in lowest terms.

Answers

Answer:

In lowest terms, there is a 1/3 probability of Jason pulling out a baseball card.

Step-by-step explanation:

There are a total of 6 cards. 4/6 of them are football and wrestling which results in 2 baseball cards. So the probability is 2/6 but since the question wants it in lowest terms, you would have to simplfy 2/6. Divide the top by 2 and the bottom by 2 which gets you 1/3.

You pick a card at random. 6 7 8 9 What is P(divisor of 70)? Write your answer as a percentage. %

Answers

Answer:

Step-by-step explanation:

6.789x10 3 esta es la solución

Please Help me solve this (Who ever answers correctly will get brainlest)

Please Help me solve this (Who ever answers correctly will get brainlest)

Answers

Answer:

First ones right

Second one wrong

Third one wrong

Fourth one right

Fifth one right

Step-by-step explanation:

I'm pretty sure this is right lol

A solar panel generates of a 3/5 kilowatt of power. A warehouse wants to generate 24 kilowatts of power. Which equation would you use to find out how many solar panels are needed. C will be the variable le used for the amount of solar panels needed

Answers

Answer:

3/5C= 24

C= 40 solar panels

Step-by-step explanation:

If Johnny can paint 1/2 of a wall in 1/4 of
an hour.

a. How many walls can he paint in 1 hour?

b. How long will it take him to paint one
wall?

Answers

Answer:

He can paint 2 walls in an hour and it will take him a 1/2 hour to paint one wall.

Step-by-step explanation:

Trust me I know.

Hi, Solution is in the pic. ❄️

a) 2 walls in an hour.

b) 1/2 of an hour.

If Johnny can paint 1/2 of a wall in 1/4 ofan hour.a. How many walls can he paint in 1 hour?b. How long

Write an equation of the line that passes through each pair of points.
Make sure it’s an equation with y=mx+b
(-8,-3), (-1,-2)
please provide explanations because i’m studying and point grinding WILL BE REPORTED

Answers

Answer:

\(y = \frac{1}{7} x - 1 \frac{6}{7} \)

Step-by-step explanation:

In y= mx +b, m is the slope and b is the y-intercept.

\(\boxed{slope = \frac{y1 - y2}{x1 - x2} }\)

where (x₁, y₁) is the 1st coordinate and (x₂, y₂) is the 2nd coordinate

Slope

\( = \frac{ - 3 - ( - 2)}{ - 8 - ( - 1)} \)

\( = \frac{ - 3 + 2}{ - 8 + 1} \)

\( = \frac{ - 1 }{ - 7} \)

\( = \frac{1}{7} \)

Substitute m= ⅐ into the equation:

y= ⅐x +b

To find the value of b, substitute a pair of coordinates into the equation.

When x= -1, y= -2,

-2= ⅐(-1) +b

-2= -⅐ +b

b= ⅐ -2

\(b = - 1 \frac{6}{7} \)

Thus the equation of the line is \(y = \frac{1}{7} x - 1 \frac{6}{7} \).

Answer:

45

Step-by-step explanation:

The green shape is a dilation of the black shape.

​

​What is the scale factor of the dilation?

​

The green shape is a dilation of the black shape.What is the scale factor of the dilation?

Answers

Answer:

The scale factor of the dilation is 1/2

Step-by-step explanation:

The longest side on the black shape is 20 units long. On the green shape, this same side is now 10 units long

The length has halved (20 ÷ 2 = 10) so the scale factor is 1/2

Hope this helps!

Answer:

0.5

Step-by-step explanation:

all sides of the new, green shape are half as long as the sides of the original black shape.

A cylindrical cake is made in a pan that has a diameter of 10
inches and a height of 2 inches. What is the total surface
area of the icing on the cake?

Answers

141.37 square inches

Answer:

  about 141.4 square inches

Step-by-step explanation:

You want the area of icing on a cake that is 10 inches in diameter and 2 inches high.

Icing

The icing on a cake covers the lateral surface area and the area of the circular top. In terms of diameter, the sum of those areas is ...

  icing area = πdh +(π/4)d² = πd(h +d/4)

  icing area = π(10 in)(2 in + (10 in)/4) = π(10 in)(4.5 in)

  icing area = 45π in² ≈ 141.4 in²

The area of icing on the cake is about 141.4 square inches.

__

Additional comment

If you use 3.14 for π, you get 141.3 square inches.

The attachment shows the "pi button" value. We have rounded to tenths, The full precision result is given so you can round to your checker's requirements.

<95141404393>

A cylindrical cake is made in a pan that has a diameter of 10inches and a height of 2 inches. What is

The design plans for a new concert hall show elevations relative to ground level at 0 feet. The elevation of the balcony floor is 37 feet, and the elevation of the basement floor is –17 feet.

Which TWO statements about the distances of the balcony and basement from ground level are true?
Select TWO that apply.

A
The basement floor is 17 feet above ground level.
B
The balcony floor is 37 feet above ground level.
C
The balcony floor is 37 feet below ground level.
D
The basement floor is 17 feet below ground level.

Answers

Answer: B and D

Step-by-step explanation:

-17 means below, so the basement floor is 17 below ground level, and no symbol means positive, meaning above, so the balcony is 37 feet above ground level.

B,D because negative (-) means below so it means the basement is 17 below and the balcony did 37 feet above

Factor the expression using the GCF.
(Note the answer must be in distributive form/property)
60−36 =

Answers

Answer:

6 (10 - 6)

Step-by-step explanation:

I'd assume their GCF is 6, therefore:

6 (10 - 6)

I’m not 100% sure what your asking but 60-36=24

Ava is buying 30 baseball caps and pays a total of $240. Each cap costs the same amount. Determine whether the situation below represents a direct proportion, and justify your reasoning. If so, find the constant of proportionality.

Pls find the answer winter break is almost ending

Answers

90% of people marry there 7th grade love. since u have read this, u will be told good news 2night. if u don't pass this on nine comments ur worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of ur life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love you...

The answer is 8 so its a direct proportion

I think...

The constant of Proportionality is 8.

What is constant of Proportionality?

If the ratio of one variable to the other is constant, then there is a proportional relationship between the two variables. If x and y are in a proportional relationship, then the ratio of y to x is the constant of proportionality. We can also express it as x is to y at times.

Given:

Total Baseball Caps= 30

Total amount of Cap= $240

let the number of caps sold be c.

Then, the equation is

30 c= 240

and, c= 240/30

c= 8

Hence, the constant of Proportionality is 8.

Learn more about constant of Proportionality here:

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explain why 6^3x7^3=42^3 is correct.

Answers

Answer:

\( {6}^{3} \times {7}^{3} = {(6 \times 7)}^{3} = {42}^{3} \)

Step-by-step explanation:

When two or more quantities have the same exponents, their bases can be multiplied together.

Because 6 x 6 x 6 is 216 and 7 x 7 x 7 is 343 if you multiply those two umbers together you will get the same answer as 42 x 42 x 42 which is 74,088

What is the angle made by the hour hand and the minute of the clock at 8:57

Answers

Answer:

85 degrees

Step-by-step explanation:

The answer to that is 87,5 degrees

LAST QUESTION FOR THE DAY!! IF YOU COULD HELP THAT WOULD BE AMAZING

It takes 154 cubes with side lengths of 1/2 inch to fill a rectangular prism. What is the volume of the rectangular prism? (Show you work or justify your solution.)

What is the width? (Show you work or justify your solution.)

Answers

Answer:

177 in wide

Step-by-step explanation:

154 divided by 1/2 =177

I think it’s 177 wide!

please solve this correctly in simple words

please solve this correctly in simple words

Answers

Answer: The answer is -2/6 :)

Step-by-step explanation:

Answer: -5/24

Step-by-step explanation:

-7/12+3/8 can also be written as

3/8-7/12

The answer will be -5/24

I hope it is right

HELPPPPPPPPPPPPPPPPPPPPPPPPPEPPPPPPPPPPPPPPPPPPPPPPP

HELPPPPPPPPPPPPPPPPPPPPPPPPPEPPPPPPPPPPPPPPPPPPPPPPP
HELPPPPPPPPPPPPPPPPPPPPPPPPPEPPPPPPPPPPPPPPPPPPPPPPP

Answers

Answer:

1st Question:

(2,-3)

(3,-1)

(3,1)

(4,1)

(5,3)

2nd Question

y=-2+10x (graph in desmos to be sure)

Step-by-step explanation:

1st Question: just write the x and the y that the x is pointing to

2nd Question: type the points on a table in desmos and find a equation that goes through the same line

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