MATHEMATICS HIGH SCHOOL

A student factors 15c^2 + c – 28 to the following.(c + 2)(15c – 14)

Which of the following statement about (c + 2)(15c – 14) is true?
A. The expression is equivalent, and it is completely factored.
B. The expression is equivalent, but it is not completely factored.
C. The expression is not equivalent, but it is completely factored.
D.The expression is not equivalent, and it is not completely factored.

Answers

Answer 1

Answer: The expression is not equivalent, but it is completely factored.

Answer 2

Answer:

Answer : C. The expression is not equivalent, but it is completely factored.

$15c^2 + c - 28$ can be factored

15 * -28 = -420

21 and -20 are the factors whose sum is +1 and product is -420

$15c^2 -20c + 21c - 28$

$(15c^2 -20c) +(21c - 28)$

$5c(3c -4) + 7(3c - 4)$

$(5c+7)(3c -4)$

This is not equivalent to (c + 2)(15c - 14)

But (c + 2)(15c – 14) is completely factored

So , The expression is not equivalent, but it is completely factored.

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Please help me Solve: 2x-3=6

Answers

OK. Here we go:

Step #1: Write the equation on your paper.

Step #2: Add 3 to each side of the equation.

Step #3: With the result of step-#2, divide each side of the equation by 2.

If your result of step-#3 is not 4.5, then go back to step-#1, and go through
all 3 steps again, trying to be more careful and focused.

2x-3=6
2x=9
x=9/2=4.5
.............................

(Quick please ) !!!!!!!!!!!!!!!! Help me!!!!! find the surface area of the rectangular prism!!!!!! thank you

Answers

You can do this !

The rectangular prism has

   -- length = 10 cm
   -- width = 7 cm
   -- height = 3 cm.

-- The area of the top and bottom is (length x width) each.

-- The area of the left and right sides is (length x height) each.

-- The area of the front and back is (width x height) each.

There. I just laid out all the schmartz you need to answer this question.
The rest is all simple arithmetic, and you're perfectly capable of turning
the crank and getting the answer. You don't need anybody else to do
that part for you.

Don't forget your units. The area of each flat face is (cm) times (cm),
and that product will be some cm² , for area.

If ON=5X-7,LM=4X+4NM=X-7 and OL=3Y-4 find the values of x and y for which LMNO must be a parallelogram. The diagram is not to scale. a. x = 11,y = 8/3
b. x = 4,y = 3/8
c. x = 11,y = 3/8
d. x = 4,y = 8/3

Answers

To find the value of x and y we should know the properties of the Parallelogram.

Parallelogram

A parallelogram is a quadrilateral, whose opposite sides are always parallel and equal to each other.

Given to us

ON=5X-7,
LM=4X+4,
NM=X-7,
OL=3Y-4

Solution

For the quadrilateral LMNO to be a parallelogram the opposite sides of the parallelogram must be equal to each other. Therefore,

LM = ON, and
OL = NM.

Equation 1

Substituting the value in equation 1,

$LM = ON\n4x+4 =5x-7\n4x-5x =-7-4\n-x =-11\n x = 11$

Equation 2

Substituting the value in equation 2,

OL = NM

$3y-4=x-7$

Substituting the value of x

$3y-4=(11)-7\n3y-4=11-7\n3y = 11-7+4\n3y = 8\ny=(8)/(3)$

Hence, the value of x and y should be 11 and $(8)/(3)$ for LMNO to be a parallelogram.

Learn more about Parallelogram:

brainly.com/question/1563728

The answer is a.

5x-7 = 4x+4 solve for x

substitute x in (x-7) to get 11-7

3y-4 = 11-7 solve for y

Maggie has 7 tiles with pictures of plants and 2 tiles with pictures of animals. Maggie keeps all the tiles on a mat with the pictures hidden and mixes them up. She then turns one tile face up and finds the picture of a plant on it. She removes this tile from the mat and turns over another tile without looking. What is the probability that the second tile that Maggie turns over has a plant on it? 22.2%
28.6%
65.0%
75.0%

Answers

Answer: The probability that the second tile that Maggie turns over has a plant on it, is 75.0 %.

Step-by-step explanation:

We have,

Number of tiles with pictures of plants = 7

And, number of tiles with pictures of animals = 2,

⇒ Total numbers of tiles = 7 + 2 = 9,

After removing one picture of plant tile,

The remaining number of plant tiles = 7 - 1 = 6,

And, total numbers of remaining tiles = 9 - 1 = 8.

Since,

$\text{ The probability of plant tile in second trial}=\frac{\text{Remaining plant tiles}}{\text{Total remaining tiles}}$

$=(6)/(8)$

$=0.75 = 75\%$ (Because, 0.01 = 1% ⇒ 0.75 = 75% )

Thus, the probability that the second tile that Maggie turns over has a plant on it, is 75.0 %.

7 tiles with plants and 2 tiles with animals...total of 9 tiles

she flips a plant tile, and does not replace it.

probability that 2nd tile is a plant = 6/8 = 0.75 = 75%

Greatest common factor of 126

Answers

Answer:

Step-by-step explanation:

Please help asap! file attached below!

Answers

I got B but you may want to check with some other people's answer choices before you put in my answer hope this helps in the meantime though I'm pretty confident in my answer

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