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
swat32
3 years ago
6

The width of a rectangle is the length minus 3 units. The area of the rectangle is 10

Mathematics
1 answer:
sergeinik [125]3 years ago
3 0

Answer:

w=2

Step-by-step explanation:

A=length times width (A=lw)

w= l-3

A=10

Substituting in, we get:

10= l(l-3)

Now, solve the equation.

10= l^{2}-3l

l^{2}-3l-10=0

(l+2) (l-5)=0 (factoring the equation)

Therefore, l= -2 or 5

Throw out the negative value because a length of rectangle will never be negative.

Now let's solve for width

Remember w=l-3

therefore

(5)-3=2

so, w=2

(honestly, this is easier to just do in your head. But here is the long form math if you happen to run into more complicated problems.)

You might be interested in
How would you set up question 4?
Pavel [41]

Step-by-step explanation:

please mark me as brainlest

5 0
2 years ago
Read 2 more answers
Lower perfect square root of <br><br>18​
sammy [17]
The lower square root would be 4.2
7 0
3 years ago
Read 2 more answers
Suppose you decide to put $12,500 in an account earning 9% interest compounded quarterly. How much interest would you earn after
Vesnalui [34]

Step-by-step explanation:

you add 9% to a number by multiplying that number by 1.09.

because adding 9% gives us in the end 109% of the original amount.

anyway, the formula for quarterly compounded interest is

Cq = P [ (1+r)^(4*n) – 1 ]

P is the starting principal amount

r is the interest rate per quarter (= interest rate / 4)

n would be the number of years (= 1 in our case).

so, the interest after 1 year is

12500((1 + 0.09/4)⁴ - 1) = 12500(1.0225⁴ - 1) =

= 12500 × 0.093083319 = $1,163.541485 ≈ $1,163.54

8 0
1 year ago
What is the relationship of the line 3x - y = 5 to the line 6x - 2y = -7?
Marta_Voda [28]

Answer:

Parallel

Step-by-step explanation:

in a Standard from equation, Ax+By=C

slope=-A/B

The slope of first line is -3/-1=3

The slope of second line is -6/-2=3

Same slopes but different C values mean they r parallel.

5 0
3 years ago
Complete the table of ordered pairs for the given linear equation
nika2105 [10]

Answer:

First blank= -1

Second blank= 14

Step-by-step explanation:

Plug in x to the equation. 1/7 x (-7)= -7/7=-1

2=1/7(x) to divide fractions you multiply by the reciprocal

2 x 7/1= 1/7× 7/1

14/1=14

4 0
3 years ago
Other questions:
  • A plane traveled 1176 miles to Phoenix and back. The trip there was with the wind. It took 14 hours. The trip back was into the
    8·1 answer
  • Approximately how many times greater is 2.3 than 1.15 ?
    8·1 answer
  • Identify the inverse g(x) of the given relation f(x).
    9·1 answer
  • A skydiver drops her watch as she jumps out of a plane flying at an altitude of 6,400 feet. If the equation for height as a func
    13·1 answer
  • Plz help in ASAP I need it I will give you BRAINLEIST whatevrr it is called
    12·1 answer
  • Solve for x -6x- 3y=-12
    11·1 answer
  • Show work on 8x+3y=-9
    7·1 answer
  • Need help this is a hard concept for me
    15·1 answer
  • Alaina bought a square frame for her desk that has an area of 81 square inches. What is the perimeter of the frame?
    10·1 answer
  • If a= 3 and b= 5, find<br> (a + b)<br> O 8/5<br> 3/8<br> 5/8
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!