The width of a rectangle is 12ft the perimeter of the rectangle is 42 what is the length of the rectangle

Answers

Answer 1

Answer:

9

Step-by-step explanation:

2w+2L=42

2(12)+2L=42

24+2L=42

-24 on both sides

2L=18

divide by two

L=9


Related Questions

TheValue of a stock begins at $0.05/and increase by 0.01 each month write an equation representing the value of the stock v in any months m

Answers

Because you start with $0.05, you're going to add that to whatever 0.01 is equal to after the amount of months

the equation I got was: v=0.05+(0.01m)

The linear equation can be represented as a straight line on a graph. The equation for the given case is v = 0.05 + 0.01m.

What is a Linear equation?

A linear equation is a equation that has degree as one.

To find the solution of n unknown quantities n number of equations with n number of variables are required.

Given that,

The value of stock at the beginning is $0.05,

And, its rate of increase for each month is 0.01.

Suppose the value of stock be v and the month be m,

Then, the increment in its value for any month m  is $0.01m.

Now, the equation for the value of stock v at any month m can be written by summing its initial value to its increment value obtained for each month as,

v = 0.05 + 0.01m.

Hence, the equation representing the value of the stock v in any months m is given as v = 0.05 + 0.01m.

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An isosceles triangle’s altitude will bisect its base. Which expression could be used to find the area of the isosceles triangle above?

Answers

The expression could be used to find the area of the isosceles triangle above is  [tex]\sqrt{40} \cdot \sqrt{40} /2[/tex]

The length of the base is the distance between the points 4+2i and 10+4i, so

Base= |10+ 4i (4+2i)| = |10+4i-4-2i|= |6 + 2i| = [tex]\sqrt{6^2 +2^2}[/tex] = [tex]\sqrt{36+4}[/tex]= √40

The middle point of the base is placed at point

4+2i+ 10 + 4i/2 =  6i +14/2 = 7+ 3i

The length of the height is the distance between the points 5+9i and 7+3i

Height = 5 +91 (7+3i)| =|5+ 9i −7 - 3i| = |−2+6i| = [tex]\sqrt{(-2)^2 + 6^2} = \sqrt {4+36}[/tex] = √40

So, the area of the triangle is

[tex]A= 1/2 \cdot Base \cdot Height= \sqrt{40} \cdot \sqrt{40} /2[/tex]

Therefore, The expression could be used to find the area of the isosceles triangle above is  [tex]\sqrt{40} \cdot \sqrt{40} /2[/tex]

The probable question may be:

An isosceles triangle’s altitude will bisect its base. Which expression could be used to find the area of the isosceles triangle above?

Points on the graph of the triangle are (5+9i), (10+4i), and  (4+2i).

A. \sqrt{40} \cdot \sqrt{40} /2

B. \sqrt{40} \cdot \sqrt{68} /2

C. \sqrt{232} \cdot \sqrt{288} /2

D.  \sqrt{232} \cdot \sqrt{164} /2

Final answer:

To find the area of an isosceles triangle when given the length of the base and the altitude, you can use the formula A = ½ × base × height. The altitude of an isosceles triangle will bisect its base, so you can divide the base in half to find the length of the base above the altitude.

Explanation:

An isosceles triangle's altitude will bisect its base. To find the area of the isosceles triangle, we can use the formula A = ½ × base × height. Since the altitude bisects the base, we can divide the base in half to find the length of the base above the altitude. Let's say the length of the base is 2x and the length of the altitude is h. So, the expression to find the area of the isosceles triangle is A = ½ × (2x) × h = xh.

a-b+2c=7
b+c=1
a-2b-3c=0

Answers

Equation 1)  a - b + 2c = 7
Equation 2)  b + c = 1
Equation 3)  a - 2b - 3c = 0

Subtract equation 3 from equation 1.

3)  a - 2b - 3c = 0
1)  a - b + 2c = 7

Subtract equations from one another.

-b - 5c = -7 {This will now be called equation 4)  

Then, add equation 4 into equation 2.

4)  -b - 5c = -7
2)  b + c = 1

Add.

-4c = -6

Divide both sides by -4.

c = 3/2

Plug in 3/2 for c in the 2nd equation.

2)  b + c = 1

b + (3/2) = 1

Subtract 3/2 from both sides.

b = 1 - 3/2

Simplify.

b = 1 - 1 1/2

Simplify.

b = -1/2

Plug in -1/2 for b in equation 1 so that we find the value of a.

*Remember : b = -1/2, c = 3/2

1)  a + b + 2c = 7

Plug in -1/2 for b, and plug in 3/2 for c.

a + (-1/2) + 2(3/2) = 7

Simplify.

a - 1/2 + 3 = 7

Simplify.

a - 2 1/2 = 7

Add 2 1/2 to both sides.

a = 7 + 2 1/2

Simplify.

a = 9 1/2

So, a = 9 1/2, b = -1/2, c = 3/2

~Hope I helped!~

-3(y+4)=21
solve for y
show all work please , thank u

Answers

expand the brackets first
-3y-12=21
add 12 
-3y=33
divide by -3
y= -11
Distribute negative 3 to y and 4. After distributing you should have -3y+-12=21. 21 plus 12 equals 33. 33 divides by negative 3 equals negative 11.

What is the solution to 89+k=-42

Answers

subtract 89 from -42. k=-131
89+k=-42

We simplify the equation to the form, which is simple to understand
89+k=-42

We move all terms containing k to the left and all other terms to the right.
+1k=-42-89

We simplify left and right side of the equation.
+1k=-131

We divide both sides of the equation by 1 to get k.
k=-131.

Consider the graph of the linear function h(x) = –x + 5. Which could you change to move the graph down 3 units?

Answers

the +5 because that's the y value on the graph
The +5 is the Y value

If the interior angle of a polygon is 170 how many sides does it have

Answers

if interior angle is 170, subtract 170 from 180 to find exterior angle:

180-170 = 10 = exterior angle

the sum of exterior angles is 360 so divide by exterior angle to find sides:

360 /10 = 36 sides

How do you solve this 2 step equation: 8+b/-4=5

Answers

I'm going to rewrite the equation assuming this is the correct form:
[tex]8 - \frac{b}{4} = 5 \newline -8 + 8 - \frac{b}{4} = 5 - 8 \newline (-4)\cdot -\frac{b}{4} = -3 \cdot (-4) \newline b = -12[/tex]

5x+6y=3x+2 in standard form

Answers


5x + 6y = 3x + 2
5x - 3x + 6y = 2
~~~~~~~~~
2x + 6y = 2

You ride your bicycle at a rate of 10 mi/h. the distance d (in miles) that you ride is given by the function d=10t where t is the time in hours.

Answers

I think it is 1 hour

The function d = 10t signifies that you cover 10 miles of distance per hour.

What is the general equation of a Straight line?

The general equation of a straight line is -

[y] = [m]x + [c]

where -

[m] is slope of line which tells the unit rate of change of [y] with respect to [x].

[c] is the y - intercept i.e. the point where the graph cuts the [y] axis.

The equation of a straight line can be also written as -

Ax + By + C = 0

By = - Ax - C

y = (- A/B)x - (C/A)

We have the following problem -

You ride your bicycle at a rate of 10 mi/h. the distance d (in miles) that you ride is given by the function d=10t.

We have the distance [d] as the function of time as -

d = 10t

The given equation id d = 10t. The slope of the line is 10. This means that you cover 10 miles of distance in 1 hour. The graph representing the function is plotted.

Therefore, the function signifies that you cover 10 miles of distance per hour.

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how do you put 2.303,2.3,2.33 and 2.03 from least to greatest

Answers

you add extra zeroes until all numbers have the same quantity. in this case, 2.303 has three numbers after the decimal, so the other three number need it too. 2.300, 2.330, and 2.030. now that you have all of them looking the same now, you can tell which is least and work from there: 2.030 is the least, then 2.300, 2.303 then 2.330 is the largest.

The number can be arranged from least to greatest as 2.03<2.3<2.303<2.33.

What are decimal Numbers?

A decimal is a number with a whole and a fractional portion. Decimal numbers are between integers and indicate numerical value for a whole plus some fraction of a whole. In fraction form, we may say there is one and one-half pizzas. This is represented in decimal form as 1.5 pizzas.

Let's write the numbers to the third decimal point. Therefore, we can write the numbers as,

2.303 = 2.3032.3 = 2.3002.33 = 2.3302.03 = 2.030

Now, the numbers can be arranged as,

2.030 < 2.300 < 2.303 < 2.330

2.03 < 2.3 < 2.303 < 2.33

Hence, the number can be arranged from least to greatest as 2.03<2.3<2.303<2.33.

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Liam earns $7.50 an hour. His benefits package is equal to 25 percent of his hourly wages. When you include the value of his benefits, how much does Liam earn per hour?

Answers

about 9.37 or 9.38 if you round up
9.37 should be your answer

The graph shows a rectangle that has been rotated. Which statement is FALSE?

Answers

We need the question and the statements in order to know

It’s D cuz after rotation I don’t think it’ll still be in the same position

If the perimeter of the rectangle is 28 cm, find the value(s) for x.

Answers

x will always = 1 no matter what 

460=50+12m what does m stand for?

Answers

50 + 12m = 460
Subtract 50 from both sides
12m = 410
Divide 12 from both sides to isolate m
m = 34 1/6
This equation should of be written as 460=12m+50, not 460=50+12m, but either way, 12 is the amount of something that being multiply by, or the slope, 50 is the y-intercept, and m is the thing that I mentioned earlier.

Solve the quadratic equation by taking square roots. 3x2 − 4 = 28

Answers

The answer to the problem is 26.

Which one of the following is a perfect square A: 100, B:13, C:127, or D:102

Answers

 A: 100 because a perfect square is just a number squared and 10 squared is 100 :)
  Which of the following is a perfect square? 
       A. 100   

Slope is -2 and (5, 3) is on the line. What is the equation in slope intercept form?

Answers

[tex]\bf \begin{array}{lllll} &x_1&y_1\\ % (a,b) &({{ 5}}\quad ,&{{ 3}}) \end{array} \\\\\\ % slope = m slope = {{ m}}= \cfrac{rise}{run} \implies -2 \\\\\\ % point-slope intercept \stackrel{\textit{point-slope form}}{y-{{ y_1}}={{ m}}(x-{{ x_1}})}\implies y-3=-2(x-5) \\\\\\ y-3=-2x+10\implies y=-2x+13[/tex]

Line g bisects line segment BC at Point H. BH = 4x and HC = 24. Find BC.

Answers

Answer: The last choice is correct
The function is a parabola U-shaped up... so it's vertex y-value is the lowest y-value of the function.
The inverse would just be the switching of the domain and range

Answer:

The length of BC is 48 units.

Step-by-step explanation:

Given information: Line g bisects line segment BC at Point H. BH = 4x and HC = 24.

It is given that line g bisects line segment BC at Point H. It means point H divides the line BC in two equal parts BH and HC.

[tex]BH=HC[/tex]

[tex]4x=24[/tex]

Divide both sides by 4.

[tex]x=6[/tex]

The value of x is 6.

[tex]BH=4x=6\times 4=24[/tex]

The length of BC is

[tex]BC=BH+HC[/tex]             (Segment addition property)

[tex]BC=24+24=48[/tex]

Therefore the length of BC is 48 units.

How many words of length over alphabet s contain exactly two distinct letters?

Answers

The english alphabet contains 2121 consonants and 55 vowels. How many strings of 66 lowercase letters of the English alphabet contain

a) exactly 1 vowel
b) exactly 2 vowels
c) at least one vowel
d) at least two vowels

Write an example of a linear equation with one variable and infinitely many solutions.

Answers

Infinitely many solutions means u have coincident lines...the same line

3(x + 5) = 3x + 15...this produces infinitely many solutions because it is the same line.

4x + 3 = 2x + 2x + 3....infinitely many solutions

5x - 1 = 10x - 5x - 1....infinitely many solutions

I gave u a few examples :)

When the smaller of two consecutive integers is added to three three times the​ larger, the result is 23. find the integers?

Answers

consecutive integers are numbers in order, 1,2,3,4,5,6,....
if you make x the smaller number the next number will be (x+1).
x +3(x+1) = 23
x +3x +3 = 23
5x = 23 - 3
5x = 20
x = 20/5
x = 4

the smaller integer is 4 then the next is 5

The value of the integers can be obtained by solving the equation as 5 and 6 respectively.

What is a linear equation?

A linear equation in two variable has the general form as y = ax + by + c, where a, b and c are integers and a, b ≠ 0.

It can be represented as a straight line on a graph.

Suppose the smaller integer be x.

Then, the larger one is x + 1.

As per the question, the following equation can be formed as,

x + 3(x + 1) = 23

⇒ 4x + 3 = 23

⇒ x = 5

Thus, the larger integer is 5 + 1 = 6.

Hence, the integers are obtained as 5 and 6 respectively.

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Solve each proportion. Show your work.

a . 2x/7 = 12/14

b. 3/x-1 = 5/7

Answers

2x / 7 = 12 / 14

Start by cross multiplying

28x = 84

Divide both sides by 28

x = 3

b) 3 / x - 1 = 5 / 7

Start by cross multiplying 

21 = 5x - 5

Flip the equation

5x - 5 = 21
    +5    +5

5x = 26

x = 26/5

are these points correct??

Answers

Yes, I believe the points are indeed correct.
I think R1 (5;-1) S1 (2;-4) T1 (-2;-4) U1 (0;-1)

PLEASE HELP ME!!!!! WORTH 10 POINTS!!!!
Part 1: Use the graph to count the slope of the line that passes through the points (2, 1) and (2, 0).

Part 2: In two or more complete sentences, explain why it is not possible to write the equation of the given line in the traditional version of the point-slope form of a line.

Answers

Part 1: Since the line goes straight up, the slope is undefined.
Not 100% how to do part 2, but here's my answer:
The slope would be 1/0 , and that's not possible cause you can't have 0 in the denominator. That's why it's not possible and the slope is undefined.

Answer:

Notice that the given line is vertical, which means its slope is undetermined.

We can demonstrate that using the slope definition:

[tex]m=\frac{y_{2} -y_{1} }{x_{2}-x_{1} }[/tex]

[tex]m=\frac{1-0}{2-2}=\frac{1}{0}=IND[/tex]

Which is undetermined because null denominators cannot be determined.

Now, the Point-Slope form of a line refers to expressin the equation with one point and its slope. So, if we cannot determine the slope, we cannot determine the point-slope form neither. In other words, we need to have a determined slope to express it in this form.

Which statement best describes why the sale price is a function of the original price

Answers

what ever is the variable between the original sale and the sale price . meaning whats the diffrence how much did the price rise or lower 

The sum of the interior angle measures of a convex polygon is 1440°. how many sides does it have?

Answers

n-2= 1440/180
n-2 = 8
n= 8+2 = 10
n= 10sides

The formula for the area of a triangle is A = bh, where b is the length of the base and h is the height. The equation solved for h is h = .

Find the height of a triangle that has an area of 30 square units and a base measuring 12 units.

3 units
5 units
8 units
9 units

Answers

a=bxh
h=a/b
h=30/12
h=2.5
The correct answer is 5 units 

The sum of two consecutive integers is 59. Write an equation that models this situation and find the values of the two integers.


A) n + 2n = 59; n = 19; 2n = 38

B) n + n + 1 = 59; n = 29; n + 1 = 28

C) n + n + 1 = 59; n = 30; n + 1 = 31

D) n + n + 1 = 59; n = 29; n + 1 = 30


Please explain your answer! : )

Answers

The equation will be:

n + (n + 1) = 59
n + n + 1 = 59

Solving:

2n + 1 = 59
     -1     -1
2n       = 58
n        = 29
n + 1 = 30

Hope this helps!

HELPPPPPPPPPPPPPPPPPPPPP

Answers

The answer is the third option because in order to get x alone you divide by 5 so you divide 2y by 5 also to get 2y/5. Hope this helps!
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