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
ycow [4]
3 years ago
13

2. The length of a rectangle is 4 centimeters less than twice its width. The perimeter

Mathematics
2 answers:
jenyasd209 [6]3 years ago
8 0

Answer:

I found:

length = 10cm

width = 7cm

Step-by-step explanation:

Call the length  l , the width  w  and the perimeter  P ; you get:

l  =  2 w  −  4

P  =  2 l  +  2 w

Where  P  =  34 c m

so, substitute the first into the second for  l :

34  =  2 ( 2 w  −  4 )  +  2 w

34  =  4 w  −  8  +  2 w

6 w  =  42

w  =  42 /6  =  7 c m

use this into the first equation:

l  =  2  ⋅  7  −  4  =  14  −  4  =  10 c m

Hope this helps!

Dafna1 [17]3 years ago
3 0

Answer:

D. length = 10 cm; width = 7 cm

100% sure

You might be interested in
If f(p) divided by x-p and x-q have the same remainder
oee [108]
Hello,


x^2-y^2=(x+y)(x-y)
x^3-y^3=(x-y)(x²+xy+y²)

Let's use Horner's division

.........|a^3|a^2.|a^1..........|a^0
.........|1....|5....|6..............|8....
a=p...|......|p....|5p+p^2....|6p+5p^2+p^3
----------------------------------------------------------
.........|1....|5+p|6+5p+p^2|8+6p+5p^2+p^3

The remainder is 8+6p+5p^2+p^3 or 8+6q+5q^2+q^3


Thus:
8+6p+5p^2+p^3 = 8+6q+5q^2+q^3
==>p^3-q^3+5p^2-5q^2+6p-6p=0
==>(p-q)(p²+pq+q²)+5(p-q)(p+q)+6(p-q)=0
==>(p-q)[p²+pq+q²+5p+5q+6]=0 or p≠q
==>p²+pq+q²+5p+5q+6=0

And here, Mehek are there sufficients explanations?
3 0
3 years ago
Solve the equation square root 2x – 7 + x = 5 algebraically, and justify the solution set
yarga [219]

Answer: x=4

Step-by-step explanation:

2x-7+x=5

Group like terms:

\left(2x+x\right)-7=5

Simplify the arithmetic:

3x-7=5

Add 7 to both sides:

3x-7+7=5+7

Simplify the arithmetic:

3x=5+7

Simplify the arithmetic:

3x=12

Divide both sides by 3:

\frac{3x}{3}=\frac{12}{3}

Simplify the fraction:

x=\frac{12}{3}

Find the greatest common factor of the numerator and denominator:

x=\frac{4\cdot 3}{1\cdot 3}

Factor out and cancel the greatest common factor and the answer will be:

x=4

5 0
2 years ago
Please help me with this also if you may, Tell me how you got what you got. Worth a lot of points :)
lesantik [10]

Answer

Step-by-step explanation:

i need the form of opperations what are you doing? standard form algerbraic roots with mixed fractions?

4 0
3 years ago
What do you get when you plug 4 in the following function?​
Leno4ka [110]

Answer:

567

Step-by-step explanation:

It will become:

y = 7(3)^4

y = 7 * 81

y = 576

4 0
3 years ago
Read 2 more answers
Find the equation of the line of best fit in slope intercept form . please help
slavikrds [6]

Answer:

y = (2/5)x + 3

Step-by-step explanation:

Note that the y-intercept is (0, 3) and that the line passes right through the point (5, 5).  First we find the slope of this line:  m = rise/run.

As we move from (0, 3) to (5, 5), we see that x increases by 5 (the run) and y increases by 2 (the rise).  Thus, the slope of this line is m = 2/5.

Now we know that m = 2/5, x = 5, y = 5 and b (the y-intercept) is 3.  Then our equation is y = mx + b, or y = (2/5)x + 3

6 0
3 years ago
Read 2 more answers
Other questions:
  • What is 511,400 in scientific notation
    8·1 answer
  • Find the centroid of the region bounded by y = 3x^2, y = 0, x = 4
    14·1 answer
  • Find the measure of ΔABC. Show your work.
    13·1 answer
  • How do you solve radical 2x plus 5 equals x?
    15·2 answers
  • What is an equivalent expression to 48x - 30?
    7·1 answer
  • What is the prefix of kilometer?
    8·2 answers
  • For an angle Θ with the point (5, -12) on its terminating side, what is the value of cosine
    7·1 answer
  • Choose all answers that are correct. 1.√50=5√2....2.√27=3√3....3. √20=4√5....4. √125=5√5
    12·1 answer
  • Albert O'Malley signs a promissory note for $3,500 for 150 days at 9% exact interest. Find the interest he must pay _____ and th
    6·1 answer
  • Solve for y.<br><br> y = 93 degrees<br> y = 103 degrees<br> y = 23 degrees<br> y = 33 degrees
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!