Which expression is the factorization of x2 + 10x + 21?

A) (x + 3)(x + 7)
B) x + 4)(x + 6)
C) (x + 6)(x + 15)
D) (x + 7)(x + 14)

Answers

Answer 1
the answer is              A
hoped this helped!
Answer 2
its choice A because when you distribute or foil you will get x2 + 10x + 21

Related Questions

Alisa’s hair is longer than 6.2 inches. Write the shortest length that alisias hair could be using 2 decimal places

Answers

Hello There!

It would be 6.21 inches.

Hope This Helps You!
Good Luck :)

ms.nenadal write 2×7=7×2 on the board. do you agree or disagree? draw arrays to help explain your thinking

Answers

It's accurate to say that 2×7 is not equal to 7×2, and the arrays provide a clear visual explanation of this mathematical concept.

Ms. Nenadal wrote 2×7 on the board, which is not equivalent to 7×2. The order of multiplication, as represented by the commutative property, states that changing the order of the factors does not change the product. In this case, 2×7 means adding 2 seven times, while7×2 means adding 7 two times.

Let's draw arrays to illustrate the difference:

For 2×7:

If we represent this as an array, it would have 2 rows and 7 columns, indicating 2 groups of 7.

Array for 2 × 7:

| * * * * * * * |

| * * * * * * * |

For 7×2:

On the other hand, 7×2 would be represented by an array with 7 rows and 2 columns, indicating 7 groups of 2.

Array for 7 × 2:

| * * |

| * * |

| * * |

| * * |

| * * |

| * * |

| * * |

While the product is the same (14) for both, the grouping and arrangement differ. Therefore, it's accurate to say that 2×7 is not equal to 7×2, and the arrays provide a clear visual explanation of this mathematical concept.

what is the complement to a 32 angle

Answers

Complement of angle 32 degree is the angle which when added with 32 will yield 90 degree. Similarly the complement of angle 58 degree is 32 degree. In a right angled triangle, the two angles other than 90 degree are complement to each other.
2 angles are comlementary if they add to 90
so if x and y are complentary then x+y=90


the complemnt to a 32 degree angle is
32+x=90
minus 32 both sides
x=58 degres

the complement is 58 degrees

which of these is a geometric sequence?

Answers

a geometric sequence deals with multiplying...u have to multiply by a common number to get the next number

1/4 * 2 = 1/2
1/2 * 2 = 1
1 * 2 = 2
2 * 2 = 4

so ur geometric sequence is : 1/4, 1/2, 1, 2, 4...with a common ratio of 2

A bird of species A, when diving, can travel 6 times as fast as bird of species B top speed. if the total speeds for these to birds 231 miles per hour, find the fastest speed of the birds of species A and the fastest speed of the bird of species B

Answers

x=266/7
x=38mph b
6x=228mph a

Prime factorization practice all factors 1.- 25 2.- 49 3.- 7 4.- 13 5.- 24 6.- 48 7.- 168

Answers

I'll do the first 2 and 6, and I challenge you to do the other three on your own!

For 1, from some guess and check we can figure out that 5*5=25. Since 5 is a prime number, that's it!

For 2, we can figure out that 7*7=49 and 7 is a prime number, so we're good there.

From 6, we can do some guess and check to figure out that 2*24=48, 2*12=24, 2*6=12, and 2*3=6, resulting in 2*2*2*2*3=48 since 2 and 3 are prime numbers. We found out, for example, to find 2*12 due to that if 2*24=48, 2*24 is our current factorization. By finding 2*12=24, we can switch it to 2*2*12

Marty has 2 4/5 quarts of juice. He pours the same amount of juice into 2 bottles how much does he pour into each bottle ?

Answers

answer:
1.4 quarts
work:
This is quite simple, actually!

2.45 / 2 = 1.4.

since there are two bottles, divide by 2!

hope this helps! :D
Final answer:

To know how much Marty pours into each bottle, divide the total juice amount by the number of bottles. His total of 2 4/5 quarts became 14/5 when turned into fifths for easier calculation. Dividing 14/5 by 2, we find that Marty pours 1 2/5 quarts into each bottle.

Explanation:

Marty has 2 4/5 quarts of juice. He is trying to equally distribute this juice into 2 bottles. To find out how much juice each bottle will contain, we divide the total amount of juice by the number of bottles.

Given that 1 full quart is made up of 5 fifths, 2 quarts are equivalent to 2x5=10 fifths. Marty has 2 full quarts and 4/5 of a quart, which amounts to 10+4=14 fifths of a quart. So, Marty has 14/5 quarts of juice in total.

If he pours the same amount into 2 bottles, then each bottle will contain half of the total amount. To find this out, we divide the total amount by 2, which gives us 14/5 ÷ 2 = 7/5 quarts. Therefore, Marty pours 7/5 quarts or 1 2/5 quarts of juice into each bottle.

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If you interchange the coordinates of any point in Quadrant 2, in which quadrant would the new point be located?

Answers

It would be in Quad 4

Solve for x. −23(3x−4)+3x=56

Answers

Open bracket
-69x+92+3x=56
Collect like term
-66x=-36
Divide both side by -66
x=6\11

Answer: 6/11

Step-by-step explanation:

Open bracket

-69x+92+3x=56

Collect like term

-66x=-36

Divide both side by -66

x=6\11

What is a positive minus a negative

Answers

when minusing a negative, the two negative/minus signs become a positive, so it would be a positive add another positive, giving a positive number

One third of the candidates for a job were 25 years old or younger. Two sevenths of the candidates were at least 50 years old. If 84 people applied for the job, how many were between 25 and 50?

Answers

1/3 * 84 = 28 were under 25

2/7 * 84 = 24 were at least 50

28 + 24 = 52

84-52 = 32 were between 25 and 50

Answer:

32 candidates are between 25 and 50.

Step-by-step explanation:

84 people applied for the job. [tex]\frac{1}{3}[/tex] of the candidates for a job were 25 years old or younger.

[tex]\frac{1}{3}[/tex] of 84 candidates = [tex]\frac{1}{3}[/tex] × 84 = 28 candidates

[tex]\frac{2}{7}[/tex] of the candidates were at least 50 years old.

[tex]\frac{2}{7}[/tex] of 84 candidates = [tex]\frac{2}{7}[/tex] × 84 = 24 candidates

age 25 and below + age 50 above = 28 + 24 = 52 candidates

Candidates between 25 and 50  =  84 - 52 = 32 candidates

32 candidates are between 25 and 50.

The large rectangle's dimensions are three times the dimensions of the small rectangle. It is #60
A.)
B.)
C.)
D.)
I need help please

Answers

A. Larger rectangle is 3 times bigger in perimeter.
B. Larger rectangle is 9 time bigger in area.
C. The answers are not the same because the scale factor is 3, then the perimeter of large rectangle would have a perimeter 3 times bigger than the small one. Also, the area would be found by taking the scale factor of 3 and squaring it 3^2=9 since it is a square unit.
D. What happens is that now we have a scale factor of 2 so the perimeter would be 2 times bigger for the larger rectangle and the area would be 2^2=4 times bigger than the small one.
Final answer:

The large rectangle's dimensions are 3 times the dimensions of the small rectangle. If the small rectangle's dimensions are W for width and L for length, then the large rectangle's dimensions are 3W and 3L.

Explanation:

The subject of this question is Mathematics, specifically relating to geometry and ratios. You're asked to compare two rectangles: a large one and a small one. The large rectangle's dimensions (both the width and length) are three times the dimensions of the small rectangle. Let's assume the dimensions of the small rectangle are W (width) and L (length). Then, the dimensions of the large rectangle would be 3W and 3L, respectively. This is because the large rectangle is three times the size of the small rectangle in both width and length.

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Can someone help figure out how to solve this equation? Thank you!


There 20 people competing in a contest if first place earns $100, second place earns $50 and third place earns $25, How many ways can the three winners be selected?

Answers

We will use the binomial coefficient formula to work out the answer

The formula is given by:
[tex]^nC_r= \left(\begin{array}{ccc}n\\r\end{array}\right)= \frac{n!}{(n-r)!r!} [/tex]
Where:
'n' is the total population or sample population
'r' is the number of pick

We have:
n = 20
r = 3
Substitute these values into the formula we have
[tex]^{20}C_3= \frac{20!}{(20-3)!3!}=1140 [/tex]

Answer:
There are 1140 different ways of picking three winners out of 20 people

In discus competition an athlete threw the discus 63.37meters 62.95 meters and 63.7meters order the distance from least to greatest

Answers

62.95meters, 63.37meters, 63.7meters.
the answer to this question is 62.95,63.37,63.7



Which equation correctly applies the distributive property?

​ A.70+2.028=(70⋅2)+(70⋅0.02)+(70⋅0.008) ​
​B.−2.5⋅0.6⋅5.8=−2.5⋅5.8⋅0.6​
​C. −1.5⋅(6⋅1.25)=(−1.5⋅6)⋅1.25 ​
​ D.(0.7⋅0.7)+(0.7⋅0.9)+(0.7⋅0.2)=0.7⋅(0.7+0.9+0.2) ​

Answers

the answer is d. 0.7 is in every set of pairs so you would get the same product by multiplying all of them the way d has it.

It's C.!!! hope this helps :D!

Evaluate cosθ if sinθ = [tex]\frac{ \sqrt{5} }{3} [/tex]

Answers

We are told that sin theta = sqrt(5) / 3.  Thus, the opp side of this angle is sqrt(5), and the hypo is 3.  Use the Pythagorean Theorem to find the adj side:

[sqrt(5)]^2 + adj^2 = 3^2, or 5 + adj^2 = 3^2.  Thus, 5 + adj^2 = 9.  Solving for adj, we get adj = plus or minus 2.

The angle theta could be in either QI or QIII, because the sine is positive.  

If the angle theta is in QI, the cosine of theta is -2/3; if in QIII, 2/3.

a grain of sand has a diameter of 0.049 millimeters how do I write that in words

Answers

Fourty nine hundredths

How to write 5x923 in expanded form

Answers

923 x 5 = 4615

4000 + 600 + 10 + 5 is your answer

hope this helps

or if you want the equation

(900 + 20 + 3) x 5

hope this helps
One way to do this would be to calculate 5(900) + 5(20) + 5(3).

4500 + 100 + 15 = 4615.

the absolute value of a number can be positive or negative true or false

Answers

false because absolute value is always going to be positive.

Answer: False

Step-by-step explanation:

it’s just false I need points

what is the slope of the line that passes through each pair of points A(-2, -4), B(2,4)

Answers

the slope is 2 hope this helps

257.673 rounded to the nearest hundreth

Answers

sine the last number (3) is less than 5 it is rounded to 257.67
257.673 rounded to the nearest hundredth is 257.67. 
Hope this helps!

Jason's age is 1 2 of his brother's age. His brother's age can be represented by the expression 12a - 9. Write an expression that can be used to represent the sum of their ages. A) 12a - 5.5 B) 18a - 13.5 C) 18a + 21 Eliminate D) (12a-9) 2

Answers

B. 18a-13.5   The expression 6a-4.5 can represent Jason's age. (Because this is half of the given expression for his brother.) When 6a-4.5 is added to the age of his bother, 12a-9, the result is the function 18a-13.5.

Answer:

[tex]18a - 13.5[/tex]

Step-by-step explanation:

Jason's age is [tex]\frac{1}{2}[/tex] of his brother's age.

Brother age is [tex]12a-9[/tex]

Sum of their ages = Age of Jonson + age of his brother

Jonson's age = half of his brother age

[tex]Jonson's \ age=\frac{12a-9}{2}[/tex]

Sum of their ages =[tex]\frac{12a-9}{2}+12a-9[/tex]  

Take common denominator 2

[tex]\frac{12a-9}{2}+\frac{24a-18}{2}[/tex]  

[tex]\frac{36a-27}{2} [/tex]  

[tex]18a - 13.5[/tex]

The selling price for a classic car is $14000, which is $2500 less than three times its original price. What was the original price of the car?

Answers

Final answer:

The original price of the car was $5,500, which is derived from the mathematical equation based on the given information in the question.

Explanation:

The subject of this question is algebra, a branch of mathematics. The question gives us the selling price of a classic car and tells us that this price is $2500 less than three times its original price. We're asked to find the original price. Let’s denote the original price by x.

According to the problem, 3x (three times the original price) minus $2500 equals the selling price ($14,000). So, if we set this up as an equation, it looks like this: 3x - $2500 = $14,000.

To solve for x (the original price), we first need to add $2500 to both sides of our equation, giving us 3x = $16,500. Then, we divide each side by 3 to solve for x, arriving at x = $16,500 ÷ 3 = $5,500. Therefore, the original price of the car was $5,500.

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The director of admissions of a small college selected 120 students at random from the new freshman class in a study to determine whether a student's grade

Answers

The director of admissions at a small college selected 120 students at random from the new freshman class in a study to determine whether a student‟s grade point average (GPA) at the end of the freshman year can be predicted from their ACT test score.

I am a graph that records each piece of data above a number line

Answers

ufudicucuvufigiviififig

Answer:

Line plot

Step-by-step explanation:

Consider the provided information.

I am a graph that records each piece of data above a number line

Line plot is a graph that uses marks to record each piece of  given data above the number line.

It shows the frequency of data along a number line. Remember it is different from line graph.

The example of line plot is shown in figure below.

Solve the following system of equations.

4x + 5y = -2
4x + 3y = 10

x=?
y=?

Answers

Ok here we go dear ..

There are many ways to solve this math problem in specific but i ll go for the smartest and simplest for you ..

4x + 5y = -2
4x + 3y = 10

4x = -5y -2
4x = -3y +10
-5y -2 = -3y +10
-12 = 2y
-6 = y
4x = -3y +10
4x = -3(-6) +10
4x = 18 + 10 = 28
x = 7
y = -6
Final answer:

The solution to the system of equations 4x + 5y = -2 and 4x + 3y = 10 is x = 7 and y = -6. This is done by using the elimination method.

Explanation:

To solve this system of equations, you can use a method called elimination. The idea is to subtract the second equation from the first to eliminate one of the variables, allowing us to solve for the other.

Subtracting the second equation from the first gives you:

4x + 5y - (4x + 3y) = -2 - 10

This simplifies to: 2y = -12

So, y = -12 / 2 = -6

Then, substitute y = -6 into the first equation:

4x + 5(-6) = -2

This simplifies to 4x - 30 = -2, or 4x = 28

So, x = 28 / 4 = 7

So the solution to the system of equations is x =7, y = -6

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Renee hiked for 3 and 3/ 4 miles. After resting, Renee hiked back along the same route for 2 and 1 /4 miles. How many more miles does Renee need to hike to return to the place where she started? Represent your answer as a simplified mixed number, if necessary.

Answers

5 miles to go back to werw he started

A plane leaves the airport at 2:00 pm and flies south at 160 miles per hour. another plane leaves the same airport at 4:00 pm and flies 11 degrees north of west at 180 miles per hour. at 5:00 pm, what is the distance between the two planes? report your answer with 2 significant figures

Answers

The disistance between 2 planes will be 180cos11 - 160 = 16.69

What is the unit form and standard form for 10 x 6 tens

Answers

10 times 6 tens=600. The standard form would be 600.

The standard will equal 600

The manager of a store that specializes in selling tea decides to experiment with a new blend. She will mix some Earl Grey tea that sells for $ 6  per pound with some Orange Pekoe tea that sells for $ 4 per pound to get 300 pounds of the new blend. The selling price of the new blend is to be $ 4.50 per​ pound, and there is to be no difference in revenue from selling the new blend versus selling the other types. How many pounds of the Earl Grey tea and Orange Pekoe tea are​ required?

Answers

75 lbs of Earl Grey 225 lbs of Orange Pekoe Some definitions. E = number of pounds of Earl Grey (300-E) = number of pounds of Orange Pekoe Expression for selling price of new blend P=300*4.5 "there is to be no difference in revenue from selling the new blend versus selling the other types." so P = 6E + 4(300-E) Set them equal to each other, then solve for E 300*4.5 = 6E + 4(300-E) 1350 = 6E + 1200 - 4E 150 = 6E - 4E 150 = 2E 75 = E So 75 lbs of Earl Grey was used and 300-75 = 225 lbs of Orange Pekoe
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