MATHEMATICS MIDDLE SCHOOL

Simplify the expression: (x + 3)(2x - 1)A) 7x2 - 3
B) 2x2 - 7x - 3
C) 2x2 - 5x - 3
D) 2x2 + 5x - 3
first person to answer is the brainiest

Answers

Answer 1

Answer:

Answer:

The correct option is option D) 2x² + 5x - 3

Step-by-step explanation:

Simplify the expression: (x + 3)(2x - 1)

A) 7x2 - 3

B) 2x2 - 7x - 3

C) 2x2 - 5x - 3

D) 2x2 + 5x - 3

To solve the problem given, we will follow the steps below;

(x + 3)(2x-1)

We will start by opening the parenthesis

x(2x -1) +3(2x-1)

2x² - x + 6x -3

Then we can now add the values with the same coefficient

2x² + 5x -3

Therefore, the correct option is option D) 2x² + 5x - 3

Answer 2

Answer: the answer for this problem is d

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Find three solutions for y=-2x-1

Answers

Answer:

(1, -3)

(2, -5)

(3, -7)

Step-by-step explanation:

Randomly choose three values for "x". Substitute each of them separately into the formula to find the "y". Then write the solution as an ordered pair (x, y).

I will choose x=1, x=2 and x=3.

When x=1:

y = -2x - 1

y = -2(1) - 1

y = -2 - 1

y = -3

(1, -3)

When x=2:

y = -2x - 1

y = -2(2) - 1

y = -4 - 1

y = -5

(2 , -5)

When x=3:

y = -2x - 1

y = -2(3) - 1

y = -6 - 1

y = -7

(3, -7)

Three solutions for y = -2x - 1 are (0, -1), (2, -5), and (-3, 5), where x and y are related by this linear equation.

The equation y = -2x - 1 represents a linear relationship between x and y. To find three solutions for this equation, you can choose different values for x and calculate the corresponding values of y. Here are three solutions:

Solution 1:

Let x = 0:

y = -2(0) - 1

y = 0 - 1

y = -1

So, one solution is (0, -1).

Solution 2:

Let x = 2:

y = -2(2) - 1

y = -4 - 1

y = -5

So, another solution is (2, -5).

Solution 3:

Let x = -3:

y = -2(-3) - 1

y = 6 - 1

y = 5

So, a third solution is (-3, 5).

You can choose any values for x and calculate the corresponding y-values to find more solutions to this linear equation.

To learn more about linear equation here

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How much larger is 400 than 40?

Answers

360

400 - 40 = 360

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$(400)/(40) = (40)/(4) \n 10 \ times \ larger$

If you mean how much larger, literally, 400-40=360

Teresa and Elaine want to know who reads more pages per hour. Teresa keeps track of the number of pages she reads in a graph, and Elaine keeps track of how many pages she reads in a table. How many pages per hour does each girl read, and who reads at a faster rate? Teresa:_____ pages per hour

Elaine:_____ pages per hour

This person who reads faster is:__________(Type T for Teresa or E for Elaine)

Elaine’s Reading Log
Time (h) 2.5 3 5 8
Pages read 70 84 140 224

Answers

Teresa --12÷0.5=24 -- 24 pages per hour
Elaine -- 70÷2.5=28 -- 28 pages per hour
E--Elanie reads the fastest

Solve for x: round to nearest tenth

Answers

100 is the answer for x

****BRAINLIEST The graph shows the solution for which inequalities?y ≥ x + 2 and y ≤ 2x + 3
y ≥ x - 2 and y ≤ 2x - 3
y ≥ 3x - 2 and y ≤ x + 3
y ≤ 3x - 2 and y ≥ x + 3

Answers

The graph shows the solution for the inequalities y ≥ 3x - 2 and y ≤ x + 3.

How can find the inequalities?

The inequalities can be found by substituting the coordinates of a point within the shaded area in both inequalities and seeing if they are satisfied.

We can find the inequalioties as follows:

The options are given.

Let us take the options one by one:

Option A: y ≥ x + 2 and y ≤ 2x + 3

Now, substitute (0,0) in the inequalities:

0 ≥ 2 and 0 ≤ 3

This is not true.

Option B: y ≥ x - 2 and y ≤ 2x - 3

Now, substitute (0,0) in the inequalities:

0 ≥ - 2 and 0 ≤ - 3

This is not true.

Option C: y ≥ 3x - 2 and y ≤ x + 3

Now, substitute (0,0) in the inequalities:

0 ≥ - 2 and 0 ≤ 3

This is true.

Option D: 0 ≤ - 2 and 0 ≥ 3

Now, substitute (0,0) in the inequalities:

0 ≥ - 2 and 0 ≤ - 3

This is not true.

Therefore, we have found that the inequalities are y ≥ 3x - 2 and y ≤ x + 3. The correct answer is option C.

Learn more about inequalities here: brainly.com/question/24372553

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Answer:

$y\geq 3x-2$ and $y\leq (1)/(2) x+3$

Step-by-step explanation:

Blue:

The inequality for the blue line is

$y\geq 3x-2$

Yellow

The inequality for the yellow line is

$y\leq (1)/(2) x+3$

This means that the correct answer is the third option,

$y\geq 3x-2$ and $y\leq (1)/(2) x+3$

Consider the polynomial p(x)=8x3+12x2+2x+3.Part A: What is the correct factorization of p(x)=8x3+12x2+2x+3 over the integers?

Part B: What method is used to factor p(x)=8x3+12x2+2x+3?

Select one answer for Part A and select one answer for Part B.

B: perfect-square trinomial
B: grouping
A: (2x+3)(4x+1)
B: sum of cubes
A: (4x2+1)(2x+3)
A: (2x+3)(4x2+6x+1)