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
Alja [10]
2 years ago
13

Need Help

Mathematics
1 answer:
EastWind [94]2 years ago
4 0
1)\ 21x^3-18x^2y+24xy^2=3x(7x^2-6xy+8y^2)\\\\2)\ a^2+7a-18=a^2+9a-2a-18=a(a+9)-2(a+9)\\=(a+9)(a-2)\\\\3)\ b^2+8b+7=b^2+b+7b+7=b(b+1)+7(b+1)\\=(b+1)(b+7)\\\\4)\ 4f^2-64=4(f^2-16)=4(f^2-4^2)=4(f-4)(f+4)\\\\5)\ 9x^2+25-not\ factorable

6)\ 8j^3k-4jk^3-7-not\ factorable\\\\8)\ 2ak-6a+k-3=2a(k-3)+1(k-3)=(k-3)(2a+1)\\\\9)\ y^2+18y+81=y^2+2y\cdot9+9^2=(y+9)^2=(y+9)(y+9)
You might be interested in
Find the circumference of a circle with a diameter of 13 feet
svetoff [14.1K]

Answer:

Step-by-step explanation:

radius=diameter/2

13/2

6.5

circumference of a circle=2πr

=2*3.14*6.5

=40.82 feet

=

5 0
2 years ago
Read 2 more answers
Solve y = x^2 +11 <br> for x.
lisabon 2012 [21]

Answer:

x = ± \sqrt{y-11}

Step-by-step explanation:

Given

y = x² + 11 ( subtract 11 from both sides )

y - 11 = x² ( take the square root of both sides )

± \sqrt{y-11} = \sqrt{x^2}, hence

x = ± \sqrt{y-11}

7 0
3 years ago
Read 2 more answers
Round 3184.5641 to the nearest hundred
Sonja [21]
When you round you have to check the number to the right of the number you are rounding. If the number to the right is 0-4 then you keep the number the same. 5-9 the number you are rounding goes up by one. Now the 4 before the decimal point is in the ones spot. The 5 to the right of the 4 is the tenth spot and the 6 to the right of that is in the hundredth spot. so this is where we need to round. To the right of the 6 is a 4 so the number would stay the same. Now when you round you drop all the numbers after it so the number is 3184.56
6 0
3 years ago
4.02 Congruent Triangles, doess anyone have tips on how to do this? im getting confused with the SSS, SSA , SAS
Bogdan [553]
SSS is side side side so all the sides have to be congruent for the triangles to be congruent.

SSA is side side angle so two sides and an angle needs to be congruent for the triangles to be congruent.

SAS is side angle side so two sides and an included triangle need to be congruent for the triangles to be congruent.

Hope that helps:)
3 0
3 years ago
A principal of $5350 is placed in an account that earns 3.5% interest. If the interest is compounded annually how much money wil
Otrada [13]
What answers are given
3 0
3 years ago
Read 2 more answers
Other questions:
  • Simplify Negative three and one-half minus negative twelve and one-fourth.
    9·2 answers
  • Is 4/6 bigger than 9/12
    6·1 answer
  • Why is a 99 confidence interval wider than a 95 confidence interval?
    9·1 answer
  • Geometry math question
    12·2 answers
  • How many solutions do the following equations have?
    7·1 answer
  • a ladder is placed against a wall the bottom of the ladder is 4 feet away from the wall and the top of the ladder touches the wa
    15·2 answers
  • What is the image of (-5,-6) after a reflection over the line y=−x?
    7·1 answer
  • Identify the type of figure
    9·2 answers
  • Solve 2x - 3 = 1<br> Solve for x
    11·2 answers
  • Ayuda porfa, quien entiende???
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!