1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Sindrei [870]
3 years ago
13

Which expression is the factorization of x2 + 10x + 21? (x + 3)(x + 7) (x + 4)(x + 6) (x + 6)(x + 15) (x + 7)(x + 14)

Mathematics
2 answers:
vitfil [10]3 years ago
8 0

Answer:

A: (x + 3)(x + 7)

Step-by-step explanation:

Vadim26 [7]3 years ago
5 0

Answer: First option.

Step-by-step explanation:

You need to remember that to factorize the given expression x^2+10x+21, you need to choose two numbers that when you add them you get "10" and when you multiply them you get "21".

These number are:

7 and 3

Because:

7+3=10\\7*3=21

Therefore, you get that the factorization of the expression x^2+10x+21 is the following:

(x+3)(x+7)

You can observe that this factorization matches with the first option.

You might be interested in
What is the product?<br> (4x)(-3x^8)(-7x^3)
SashulF [63]

Answer:

84x¹²

Step-by-step explanation:

To simplify this expression, we work from left to right:

4x(-3x⁸)(-7x³)

Multiplying the coefficients of the first two, we have 4(-3) = -12.  Using the laws of exponents, multiplying powers with the same base means we add the exponents; this gives us x(x⁸) = x¹⁺⁸ = x⁹.  This gives us

-12x⁹(-7x³)

Multiplying the coefficients, we have -12(-7) = 84.  Using the laws of exponents, for the variable we have x⁹(x³) = x⁹⁺³ = x¹²

This gives us

84x¹²

5 0
3 years ago
A school baseball team earned $3416.90 from selling 5716 tickets to their game. If grandstand tickets sold for 65 cents each and
Nataly [62]
Let g and b represent the numbers of grandstand and bleacher tickets sold.
.. g + b = 5716 . . . . . . . . . total number of tickets sold
.. 65g +40b = 341690 . . value of tickets sold

Using the first equation
.. g = 5716 -b
Sustituting into the second equation
.. 65(5716 -b) +40b = 341690
.. -25b + 371540 = 341690 . . . . . collect terms
.. -25b = -29850 . . . . . . . . . . . . . . subtract 371540
.. b = 1194 . . . . . . . . . . . . . . . . . . . . divide by -25

1194 bleacher tickets were sold.
6 0
4 years ago
If area of a circle is 49/64 pie cm square,then find the circumference of the circle?​
tresset_1 [31]

Answer:

7/4 * pi

Step-by-step explanation:

Area of circle = pi * r^2

Find radius:

pi * 49/64 = pi * r^2

49/64 = r^2

7/8= r

Circumference of circle = 2pi * r

2 * pi * (7/8) = 7/4 * pi

Assuming that the answer is in terms of pi as the question is in terms of pi

8 0
2 years ago
Read 2 more answers
Which of the following is always true about lines of symmetry?
madam [21]
What are the answers being provided ?
4 0
3 years ago
Missing angle - circle theorem / PLEASE HELP
xxMikexx [17]

Answer:

B

Step-by-step explanation:

angles on the circumference of a circle subtended on the same arc are congruent , then

x = 52°

3 0
2 years ago
Read 2 more answers
Other questions:
  • Find the area of a rectangular room(in square feet) <br> that is 15 feet by 120 inches.
    8·1 answer
  • How do I solve 80+(-22 4/15)
    5·1 answer
  • What is the y-intercept of the line described by the equation below? Y=3x - 6
    14·1 answer
  • Instructions:Select the correct answer. What is the slope-intercept form of the equation of a line that passes through (5, -4) a
    11·1 answer
  • Sebastian scored a 94% on a test. Frankie answered 43 questions correctly out of 50 total questions. Who scored higher on the te
    14·2 answers
  • Select the best answer for the question 7/8=?/48
    14·2 answers
  • The distance across the center of a hula-hoop is 2 feet. How much plastic is needed to make the
    11·1 answer
  • Can someone <br> Please <br> Help me
    11·1 answer
  • I need help with #12
    6·1 answer
  • A researcher is working with two variables measured at the interval level. Which statistical tool should the researcher use
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!