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
emmasim [6.3K]
3 years ago
7

The length of a rectangle is 3 more than twice the width. The area of the rectangle is 119 square inches. What are the dimension

s of the rectangle?
If x = the width of the rectangle, which of the following equations is used in the process of solving this problem?
Mathematics
1 answer:
Svetradugi [14.3K]3 years ago
5 0
A = L * W........x = W
L = 2x + 3
A = 119

119 = x(2x + 3)
119 = 2x^2 + 3x
2x^2 + 3x - 119 = 0
(2x + 17)(x - 7) = 0

2x + 17 = 0
2x = -17
x = - 17/2 or - 8.5....wont work because it is negative

x - 7 = 0           L = 2x + 3
x = 7                L = 2(7) + 3
                        L = 14 + 3
                        L = 17

so the width (x) = 7 inches and the length (L) = 17 inches...
the equation used was : 119 = x(2x + 3)...or 2x^2 + 3x - 119 = 0...not sure which equation they want...but they are the same


You might be interested in
I need help with 28-30
BaLLatris [955]

Answer:

its a square, so all sides similar

28. SV = RT/2 = 5.7/2 = 2.8

29. RT^2 = RQ^2 + QT^2

--> RT = √ (4^2 + 4^2)

RT = √32 =5.7

30. perimeter of RVS = 2.8 + 2.8 + 4 = 9.7

8 0
3 years ago
Dr. Black is standing 13 feet from the streetlamp. The lamp is making his shadow 9 feet long. He estimates that the angle of ele
Thepotemich [5.8K]

13 + 9 = 22 feet

the angle is 50 degrees

 multiply 22 x tan(50) to find the height of the lamppost

22 x tan(50) = 26.21

 so the lamppost is about 26 feet tall

7 0
3 years ago
Read 2 more answers
15) x +1 +1 +6x &gt; 3(x - 4) - (x - 4)<br>​
victus00 [196]

Answer:

x>-2

Step-by-step explanation:

5 0
4 years ago
9. Which equation is represented by the table?
mixas84 [53]

Answer:

#2.

Step-by-step explanation:

4 0
3 years ago
The hypotenuse of an isosceles right triangle is 16 centimeters. Find the length of the 2 other sides of the triangle to the nea
scZoUnD [109]
Right triangle means we can use a^2+b^2=c^2
isosceles means 2 sides are equal legnths

the hypotenuse is normally the longest side so the equal sides are the other sides so therefore
a=b
therefor
(a^2)+(a^2)=c^2
2(a^2)=16^2
2(a^2)=256
divde both sides by 2
a^2=8
the side legnth of the other 2 sides is the square root of 8 which is aprox 2.8284271247452
but we only want the tenth so we look at the hundreths as well
2.82
round to the nearest tenth
2.8 cm is the answer of the legnths
4 0
3 years ago
Other questions:
  • I ned help whit ligninger
    7·1 answer
  • Adam is saving money to buy a computer. He saves s dollars each week. After 7 weeks, he has $315 saved. a. Write an equation tha
    6·2 answers
  • 10x^3 - 6x^2 + 50x - 30
    6·2 answers
  • Find the area of the polygon
    12·2 answers
  • 9. A fitness club charges a membership fee of $79, in addition to a $59 monthly fee. Determine
    9·2 answers
  • The sum of three consecutive even integers is 36 . find the smallest of them​
    6·1 answer
  • Annie has two boxes of markers. The first box is 7/10 full and the second box is 6/10 full. How many total markers does Annie ha
    5·1 answer
  • Roll a standard number cube. Then pick a marble out of a bag.
    11·1 answer
  • Compare using &lt;,&gt; or =. HELP plsplspls !! :)
    8·2 answers
  • Given the two rectangles below. Find the area of the shaded region.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!