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
SVETLANKA909090 [29]
3 years ago
7

The area of a rectangle is 42 m2, and the length is

Mathematics
1 answer:
MrRissso [65]3 years ago
6 0

Answer:

length = 14 m

width = 7 m

Step-by-step explanation:

l = length

w = width

l = 2w - 8

w(2w - 8) = 42

2w² - 8w - 42 = 0

you can factor out a 2 to work with smaller numbers:

w² - 4w - 21 = 0

(w - 7)(w + 3) = 0

w = 7

'w' cannot equal a negative so we discount it as an answer

find length:

l = 2(7) - 8

l = 14 - 8 or 6m

You might be interested in
Gracie can purchase 5 oranges for $4 but she only wants one what is the cost of one orange
vladimir2022 [97]
The cost of one orange is $1.25
what you do is you divide 5 by 4 so 5 divided by 4= 1.25
hope this helps!
8 0
2 years ago
The combined perimeter of the rectangle and triangle is 63 inches. The model shows the dimensions of the rectangle. What is the
katrin2010 [14]

*See diagram in the attachment

Answer:

27 inches

Step-by-step explanation:

Combined perimeter = perimeter of rectangle + perimeter of triangle = 63 inches

Perimeter of rectangle = 2(L + W)

L = 11 in.

W = 7 in.

Perimeter of rectangle = 2(11 + 7) = 36 in.

Let perimeter of the triangle be represented by x

Therefore:

36 + x = 63

Subtract 36 from each side

x = 63 - 36

x = 27

Perimeter of triangle = 27 inches

7 0
2 years ago
Help me please thanks
Natalka [10]

Answer: All real numbers

Step-by-step explanation: If you plug in any number, it will work. 4(a+3) = 12+4a. a=-3  0=0


6 0
3 years ago
Read 2 more answers
The graph of a polynomial S(x) = (2x - 3)(x – 4)(x+3) has x-intercepts at 3.x values.
dezoksy [38]

Answer:

Step-by-step explanation:

x-intercepts exist where y is equal to 0. Where y is equal to 0 is where the graph goes through the x-axis. Our x-intercepts are (2x-3), (x + 3), and (x-4). Again, since x-intercepts exist where y = 0, then by the Zero Product Property, 2x - 3 = 0, x - 4 = 0, and x + 3 = 0. In the first x-intercept:

2x - 3 = 0 and

2x = 3 so

x = 3/2

In the second:

x - 4 = 0 so

x = 4

In the third:

x + 3 = 0 so

x = -3

So the x-intercepts in the correct order are x = 3/2, 4, -3

6 0
3 years ago
Brainers, please help me out. Thanks
quester [9]

The Pythagorean Theorem is a^2 + b^2 = c^2 where a and b are the sides and c is the hypotenuse.

From the picture you have a = 10 and c = 15.

Now you have:

10^2 + b^2 = 15^2

Simplify:

100 + b^2 = 225

Subtract 100 from both sides:

b^2 = 125

Take the square root of both sides:

b = √125

b = 11.2

6 0
3 years ago
Other questions:
  • 2. The amount of fertilizer in a landscaping company’s warehouse decreases at a rate of 3% per week. The amount of fertilizer in
    14·1 answer
  • Tell whether this sequence is arithmetic. If it is identify the common difference. 19,8,-3,-14
    11·1 answer
  • What would be the answer for number 3?
    14·2 answers
  • Currency on hand =5,000 Mexican pesos currency desired = United States dollars. How many United States dollars based on Wednesda
    10·1 answer
  • What is the surface area of the pyramid?<br><br> 24.9 m2<br> 55.7 m2<br> 75.7 m2<br> 105.4 m2
    6·2 answers
  • I need help the answers that are there are
    6·1 answer
  • Help plz i have barely any time to do this right now and i need answers ​
    7·1 answer
  • The polynomial P(z) = <img src="https://tex.z-dn.net/?f=z%5E%7B3%7D%20%2Bmz%5E%7B2%7D%20%2Bnz%20-%208" id="TexFormula1" title="z
    6·1 answer
  • The library of congress in Washington DC is considered the larger library in the world. They often receive boxes of books to be
    7·1 answer
  • Solve for x using the circle below. Enter the value of x rounded to the nearest wholenumber.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!