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yanalaym [24]
2 years ago
7

Braelyn is writing an equation to represent the perimeter of a rectangle with the width equal to half the length. She knows that

the perimeter is equal to 18 units and needs to find the length and width of the rectangle. Which equations represent this relationship? Select the four correct answers.
x + one-half x = 18
2 x + x = 18
2 (x) + 2 (2 x) = 18
x + one-half x + x + one-half x = 18
2 (x + one-half x) = 18
2 x + one-half x = 18
Mathematics
1 answer:
Alja [10]2 years ago
7 0

Answer:it’s the middle 4. First and last choices are wrong

Step-by-step explanation:

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Solve -5 + w/3 = 1<br> 12<br> -12<br> 2<br> -2
Mumz [18]

Answer:

w = 12

Step-by-step explanation:

Step  1  :

           w

Simplify   —

           3

Equation at the end of step  1  :

        w    

 (-5 +  —) -  -1  = 0

        3    

Step  2  :

Rewriting the whole as an Equivalent Fraction :

2.1   Adding a fraction to a whole

Rewrite the whole as a fraction using  3  as the denominator :

          -5     -5 • 3

    -5 =  ——  =  ——————

          1        3  

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole

Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator

Adding fractions that have a common denominator :

2.2       Adding up the two equivalent fractions

Add the two equivalent fractions which now have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

-5 • 3 + w     w - 15

——————————  =  ——————

    3            3  

Equation at the end of step  2  :

 (w - 15)    

 ———————— -  -1  = 0

    3        

Step  3  :

Rewriting the whole as an Equivalent Fraction :

3.1   Subtracting a whole from a fraction

Rewrite the whole as a fraction using  3  as the denominator :

         -1     -1 • 3

   -1 =  ——  =  ——————

         1        3  

Adding fractions that have a common denominator :

3.2       Adding up the two equivalent fractions

(w-15) - (-1 • 3)     w - 12

—————————————————  =  ——————

        3               3  

Equation at the end of step  3  :

 w - 12

 ——————  = 0

   3  

Step  4  :

When a fraction equals zero :

4.1    When a fraction equals zero ...

Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.

Now,to get rid of the denominator, Tiger multiplys both sides of the equation by the denominator.

Here's how:

 w-12

 ———— • 3 = 0 • 3

  3  

Now, on the left hand side, the  3  cancels out the denominator, while, on the right hand side, zero times anything is still zero.

The equation now takes the shape :

  w-12  = 0

Solving a Single Variable Equation :

4.2      Solve  :    w-12 = 0

Add  12  to both sides of the equation :

                     w = 12

One solution was found :

                  w = 12

Processing ends successfully

plz mark me as brainliest :)

3 0
3 years ago
Read 2 more answers
Anyone? please? i need help, i dont understand how to do this
Afina-wow [57]

Answer:

a. A(0) is $2500 and A(10) is $3700.61

b. The beginning value and the value after ten years

c. 17.673 years

d. That after roughly 17 and a half years, his investment will be doubled.

8 0
3 years ago
EXPLAIN ANSWER PLZ!
Dmitriy789 [7]

height,h = 3"

base, b = length, l = 2

area of triangle, t = bxh/2...eqn 1

area of square, s = l^2...eqn 2

area of pyramid, p =4t + s...eqn 3

subst h = 3 and b = 2 in eqn 1

t = 3x2/2 = 3

subst l =2 in eqn 2

s = 2^2 = 4

subst t = 3 & s = 4 in eqn 3

p = 4(3) + 4 = 16sq inch

6 0
3 years ago
You want new picture frames that cost $12 each. Shipping is $8 per order. If
UNO [17]
C 15 x 12 =$180 plus $8 shipping is $188.00
7 0
3 years ago
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Mei is trying to list as many prime numbers as she can for a challenge problem for her math class. She finds
Svet_ta [14]
Hello,

Since the degree of a polynomial is the highest exponent present, the degree of Mei’s polynomial should be 2.
6 0
3 years ago
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