find the sum. 12x2 + 9x2=

Answers

Answer 1

To calculate the sum of 12x² + 9x², add the coefficients (12 and 9) to get 21 and then multiply by x², resulting in a sum of 21x².

To find the sum of the expression 12x² + 9x², you simply add the like terms. Both terms have an x² component, so they can be combined.

Here's how you do it:

First, identify the coefficients of the x² terms, which are 12 and 9.

Next, add these two coefficients together: 12 + 9 = 21.

Finally, multiply the sum of the coefficients by x2 to get the final answer: 21x².

Therefore, the sum of 12x² + 9x² is 21x².

Related Questions

Simplify.

(-5.12) - (-4.7) + (7.021)

6.79
6.601
-2.799

Answers

The answer is 6.601, and therefore, the second option.

The answer is 6.601

(-5.12)-(-4.7)+(7.021)

= -0.42+7.021
= 6.601

A street that is 270m long is covered in snow. city workers are using a snowplow to clear the street. a tire on the snowplow has to turn 45 times in traveling the length of the street. what is the diameter of the tire?

Answers

1.9 meters is the diameter of the tire

What is 55 x 10 to the power of 4 in scientific notation

Answers

55*10 power of 4

5.500

Solve an equation to answer the question

Jose bought 2 movie tickets and a box of popcorn. The popcorn cost $6, and he spent a total of $24. How much did each ticket cost? Use m to represent the cost of each movie ticket.

A. 6m+2=24 m=3 ; each ticket cost $3.

B. 2m+6=24 m=9 ; each ticket cost $9.

C. 2m+6=24 m=15 ; each ticket cost $15.

D. 6m+2=24 m=4 ; each ticket cost $4.

Answers

2m + 6 = 24

Subtract 6 from both sides.

2m = 18

Divide both sides by 2.

m = 9

Hope this helps!

Answer:

B) 2m+6=24 m=9 ; each ticket cost $9.

Step-by-step explanation:

Given: Jose bought 2 movie tickets and a box of popcorn. The popcorn cost $6, and he spent a total of $24.

Here "m" represents the cost of each movie ticket.

Now let's form an equation.

2m + box of popcorn = $24

Box of popcorn cost $6

So,

2m + 6 = 24

Now, we have to solve for m.

Subtract 6 from both sides, we get

2m + 6 - 6 = 24 - 6

2m = 18

Dividing both sides by 2, we get

2m/2 = 18/2

m = 9

So, the cost of movie ticket is $9 each.

Therefore, the answer is B) 2m+6=24 m=9 ; each ticket cost $9.

Which of the following statements is true?

All trapezoids are parallelograms.
All parallelograms are trapezoids.
All rectangles are squares.
All rhombuses are rectangles.

Answers

Answer:

The answer is B. All parallelograms are trapezoids.

Step-by-step explanation:

The opposite or facing sides of a parallelogram are of equal length and the opposite angles of a parallelogram are of equal measure. That makes the opposite of facing sides are parallel to each other. The the definition of trapezoid is a convex quadrilateral with at least one pair of parallel sides. Therefore, all parallelograms are trapezoids.

The true statement among the given options is, B. All parallelograms are trapezoids.

A trapezoid is a quadrilateral with at least one pair of parallel sides, but it doesn't require all sides to be parallel. Therefore, not all trapezoids are parallelograms. (Statement A is false)

A parallelogram is a quadrilateral with both pairs of opposite sides parallel. Every trapezoid has at least one pair of parallel sides, so it can be considered a special case of a parallelogram. Therefore, all trapezoids are parallelograms. (Statement B is true)

A rectangle is a quadrilateral with all four angles equal to 90 degrees. It has opposite sides that are parallel and equal in length. A square is a special type of rectangle with all sides of equal length. However, not all rectangles have all sides of equal length, so statement C is false.

A rhombus is a quadrilateral with all four sides of equal length. It has opposite sides that are parallel, making it a parallelogram. Since a rectangle is a parallelogram with right angles, and a rhombus is a parallelogram with equal sides. Therefore, statement D is also false.

Learn more about quadrilaterals here:

https://brainly.com/question/3113772

#SPj6

What are the steps for using a compass and straightedge to construct a square? Drag and drop the steps in order from start to finish.

Use the straightedge to draw FD ¯ ¯ ¯ ¯ ¯ and FE ¯ ¯ ¯ ¯ ¯ .

Keeping the same compass width, place the compass on point E and draw an arc in the interior of ∠DBE to intersect the previously drawn arc. Label the point of intersection as point F.

Use a straightedge to draw line t and label a point on the line as point B.

Without changing the compass width, place the compass point on point D and draw an arc in the interior of ∠DBE .

With the compass open to the desired side length of the square, place the compass point on point B and draw an arc on line t and an arc on BC ← → . Label the points of intersection as points D and E.

Construct a line perpendicular to line t through point B. Label a point on this line as point C.

Answers

Is this from Flvs? if so i can help you

Answer:

See explanation below.

Step-by-step explanation:

To construct a square using only a compass and a straightedge first we need to:

Use a straightedge to draw a line (we will name the line t) and label a point on the line as point B.Then, you will draw a perpendicular line to the segment that passes through point B ( To remember how to draw a perpendicular line through a segment see the note at the end of the explanation), label a point on this line as point C.With the compass open to the desired side length of the square (meaning the measure of the side of the square you need), place the compass point on point B and draw an arc on line t and an arc on BC. Label the points of intersection as points D and E.Without changing the compass width, place the compass point on point D and draw an arc in the interior of ∠DBE .Keeping the same compass width, place the compass on point E and draw an arc in the interior of ∠DBE to intersect the previously drawn arc. Label the point of intersection as point F.Finally, use the straightedge to draw FD and FE (the other two sides of the square are DB and DE)

*Note: To draw a perpendicular line through a segment follow the next steps:

Place the compass point at point B Draw an arc of ANY size that crosses line t twice (one to the left of point B and one to the right)Stretch the compass larger than you first did and place the point at one of the points where the previous arc crossed the line. Draw an arc above the line.Using the same width you used on step 3, place the compass point at the other point in the line.From there draw an arc above the line that crosses the other arc from step 4.Using your straightedge draw a line from the intersection of both arcs and point B and this line will be perpendicular to the line and it will pass through point B.

There is an average of 3.5×10−2 kilograms of dissolved salt in each liter of seawater. The Pacific Ocean contains approximately 6.6×1020 liters of seawater. About how many kilograms of dissolved salt are in the Pacific Ocean? Enter your answer, in scientific notation, in the boxes. ×× 10 kg

Answers

2.3 * 10^(19)

3.5 * 10⁻² * 6.6 * 10⁽²⁰⁾

3.5 * 10⁻² * 6.6 * 10⁽²⁰⁾ = 3.5 * 6.6 * 10⁻² * 10²⁰⁾

xᵃ * xᵇ = x⁽ᵃ⁺ᵇ⁾ - 10⁻² * 10²⁰ = 10⁽⁻² ⁺ ²⁰⁾ = 10⁽ ¹⁸ ⁾
3.5 * 6.6 * 10⁽ ¹⁸ ⁾

3.5 * 6.6 = 23.1

Quick Answer:

2.31 x 10^19 kg

Change each fraction to a decimal. If the division doesn’t end, round your answer to the nearest hundredth. a. 3⁄4 b. 7⁄16 d. 3⁄5 e. 7⁄40 f. 51⁄20

Answers

a. 0.75
b. 0.44
d. 0.6
e. 0.18
f. 2.55

Answer:

the other person forgot to answer c

Step-by-step explanation:

a 0.75

b 0.44

c 0.6

d 0.6

e 0.18

Which of the following is an example of gameplay in a video game
A: the art of a game

B: the player interacting with the game world and game mechanics

C: the personalities of all the characters

D:all of the above

Answers

i would think B, since that describes playing a game.

Answer:

B: the player interacting with the game world and game mechanics

Step-by-step explanation:

explain quantum physics and math

Answers

2+2 is 4 minus 1 thats 3 quick maths

Final answer:

Quantum physics is the branch of physics that deals with small objects and the quantization of various entities, including energy and angular momentum. Mathematics plays a crucial role in explaining quantum physics. It has various applications and impacts our understanding of the universe and technology.

Explanation:

Quantum physics is the branch of physics that deals with small objects and the quantization of various entities, including energy and angular momentum. It focuses on understanding the behavior of subatomic particles and the strange submicroscopic world they inhabit. Quantum mechanics, a part of quantum physics, describes the motion of objects that are atomic or subatomic in size and demonstrates wave-particle duality.

Mathematics plays a crucial role in explaining quantum physics. The mathematics of probability is used to describe the behavior of complex quantum systems. Additionally, equations and mathematical models are used to calculate and predict the behavior of subatomic particles.

Quantum physics has many applications and impacts our understanding of the universe and technology. It helps explain phenomena such as why some materials conduct electricity while others do not. It is also vital in areas such as atomic and nuclear physics, where it is used to study and manipulate the behavior of particles and systems at the quantum level.

According to the Fundamental Theorem of Algebra, how many roots exist for the polynomial function? f(x) = 4x5 – 3x

Answers

It really is five roots in e2020

Solve for x.

89(54x−36)+2=−34(−40+16x)+90x

Answers

c:
..................

Ariel was told the x intercept and the y intercept of a line with a positive slope. Yet, it was impossible for Ariel to find the slope of the line. What can you conclude about this line?

Answers

A line has the following standard equation form:

y = m x + b

where m is the slope and b is the y intercept

So if Ariel cannot find the slope, then this would only mean that m = 0, there is no slope. And hence the line is either a straight vertical line or straight horizontal line.

Answer:

There is no slope

Final answer:

Given only the information that a line has x and y intercepts and a positive slope, Ariel cannot directly calculate the slope without knowing the exact values of the intercepts. Knowledge of two distinct points on the line is necessary for calculating the slope.

Explanation:

Ariel was told the x intercept and the y intercept of a line with a positive slope. Yet, it was impossible for Ariel to find the slope of the line. What can you conclude about this line? If given only the x and y intercepts without the exact numeric values or additional points, determining the slope directly is challenging because the slope formula, Δy/Δx (change in y over change in x), requires knowledge of at least two distinct points on the line (other than the intercepts without their exact values). However, knowing that a line has both an x and a y-intercept implicitly indicates it is neither vertical nor horizontal, and stating it has a positive slope provides a general direction of the line's angle relative to the axes.

To find the slope, you generally need the coordinates of two distinct points on the line. For instance, if the y-intercept is given as (0, b) and the x-intercept as (a, 0), the slope m can be found by the difference in y values divided by the difference in x values, or (0 - b) / (a - 0) = -b/a. But without knowing a and b's exact values, Ariel cannot calculate the numeric value of the slope. This indicates a limitation in calculating slope with incomplete information about the intercepts' exact numerical values but not an inherent impossibility of the line to have a determinable slope if such values were known.

Which ordered pairs are solutions to the inequality 2y−x≤−6 ?

Select each correct answer.

(0, −3)

(2, −2)

(1, −4)

(6, 1)

(−3, 0)

Answers

try plugging them in, might seem tedious, but it's the best way to practice. if you plug in a pair and the left side of the equation is less than or equal to 6, it's the right answer.

we have

[tex]2y-x\leq -6[/tex]

we know that

if a ordered pair is a solution of the inequality

then

the ordered pair must satisfy the inequality

we will proceed to verify each case to determine the solution of the problem

case A) [tex](0,-3)[/tex]