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
almond37 [142]
3 years ago
7

Expand and simplify (x + 5)(x + 4)​

Mathematics
2 answers:
Nina [5.8K]3 years ago
7 0

Answer:

(x+5)⋅(x+4)= x2+9x+20

Step-by-step explanation:

(x+5)(x+4)

=x

2

+4x+5x+20=

=x

2

+9x+20

blondinia [14]3 years ago
5 0

Step-by-step explanation:

(x+5)(x+4)

x(x+4)+5(x+4)

x(x+4)+5(x+4)

x2 +4x+5(x+4)

x2+4x+5(x+4)

x2+4x+5x+20

x2+4x+5x+20

x2+9x+20

solution

x2+9x+20

You might be interested in
A garden is in the shape of a rectangle.if the garden has a length of 4 feet and a width of 6 feet, what is the area of the gard
nlexa [21]
Area = length * width
Area = 4ft * 6ft
Area = 24ft^{2}
3 0
3 years ago
How do i graph -7x-2y=-21???
ExtremeBDS [4]

Answer:

-7/2 is the slope. -10.5 is your starting point on the y-axis. You go from -10.5, up 7 and over to the left 2 times because it's negative.

Step-by-step explanation:

-7x-2y=-21

-2y=7x-21

y=-7/2x-21/2

y=-7/2x-10.5

Hope this helps!

7 0
3 years ago
Read 2 more answers
Student loan debt in the United States grows approximately 9.8×10^3 dollars every hour. At this rate, how much debt occurs each
Marat540 [252]
1hr=0.0098 dollars
24hr=?
24 by 0.0098 =0.2352 dollars
:0.2352 by 7 days
=1.6464 dollars
:=1646.4 by 10 raised to the power - 3
3 0
4 years ago
Complete the proofs using the most appropriate method. may require CPCTC.
n200080 [17]

For the first one, you did good. I will just suggest a couple things.

Statement              Reason

JK ≅ LM                   Given

<JKM ≅ < LMK        Given  (You did both of these steps so well done.)

MK ≅ MK              Reflexive Property (Your angle pair is congruent but isn't one of the interior angle of the triangles you are trying to prove.)

ΔJMK ≅ ΔLKM        SAS

Problem 2: (You also have a lot of great stuff here.)

Statement          Reason

DE ║ FG              Given

DE ≅ FG              Given

<DEF≅<FGH       Given

<EDF≅<GFH       Corresponding Angles (You don't need to know that F is the midpoint but you got corresponding angle pair which is correct.)

ΔEDF≅ΔGFH        ASA

<DFE≅<FHG       CPCTC  

3 0
3 years ago
Need answers for 70-75
adoni [48]

Answer:

70. 0

71. -54

72. 12

73. 86

74. 59

Step-by-step explanation:

To evaluate an expression, substitute specific values for the variables and simplify using Order of Operations.

70. c-3d becomes

(1)-3(\frac{1}{3}) = 1-(\frac{3}{3}) = 1-1 = 0

71. x+x^3-4x^4 becomes

2+2^3-4(2)^4 = 2+8-4(16) = 2+8-64=10-64=-54

72. 5a+3a^2 becomes

5(-3)+3(-3)^2 = -15 +3(9) = -15 + 27 = 12

73. F=\frac{9}{5}C+32 becomes

F=\frac{9}{5}(30)+32=\frac{270}{5}+32 = 54+32 = 86

74.  F=\frac{9}{5}C+32 becomes

F=\frac{9}{5}(15)+32=\frac{135}{5}+32 = 27+32 = 59

8 0
3 years ago
Other questions:
  • How many ways can four items be selected from a group of seven items?
    5·1 answer
  • A semi-truck trailer is basically a rectangular prism. A typical height for the inside of these trailers is 108 inches . If the
    14·2 answers
  • Evaluate the expression ( 1 + 2 i ) ( − 2 − 1 i ) and write the result in the form a + b i .
    10·1 answer
  • Is 3•4³ equal to 192?
    10·1 answer
  • What is the area of the figure James drew
    12·1 answer
  • Brock spends 15 minutes walking to
    5·2 answers
  • What is 6 feet + 4 feet measured to the nearest half foot
    14·1 answer
  • Jaden'sretirementpartycosts
    7·2 answers
  • Which negative angle is equivalent to a 65° angle?
    14·2 answers
  • Any math experts please factor this thank you have a blessed day
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!