Mathematics College

The length of a rectangle is four times the width. The perimeter of the rectangle is 45 inches. Write a system of
equations that represents this problem. What is the area of the rectangle?

Answers

Answer 1

Answer:

81 square inches.

Step-by-step explanation:

Draw a diagram to represent what you know.

You don't know the values of the lengths so represent them algebraically.

You know the perimeter is 45 inches and that the perimeter is calculated by the sum of all of the sides of a shape.

You can rearrange to find the value of a side you've denoted as some unknown variable.

The area is given by the product of the sides. Express this algebraically and then input the value you found.

The Length Of A Rectangle Is Four Times The Width. The Perimeter Of The Rectangle Is 45 Inches. Write

Related Questions


somebody help with this thanks

Answers

i think the slope is 2

Find the slope of 5y-x=2​

Answers

Answer:

Slope is 1/5

Answer: -1/5

Step-by-step explanation: here!

$3.50 nail polish marked up to $8.75. explain it please like example. ​

Answers

Answer:

the pice goes up 5.25 more  i dont get what is asked btw

Step-by-step explanation:

Answer:

150%

Step-by-step explanation:

Sorry I don't know how to explain this since I just got this from my test.

A student who is trying to write a paper for a course has a choice of two topics, A and B. If topic A is chosen, the student will order two books through interlibrary loan, whereas if topic B is chosen, the student will order four books. The student believes that a good paper necessitates receiving and using at least half the books ordered for either topic chosen. If the probability that a book ordered through interlibrary loan actually arrives in time is .9 and books arrive independently of one another, which topic should the student choose to maximize the probability of writing a good paper? What if the arrival probability is only .5 instead of .9?

Answers

Answer:

[tex]\text{For topic A }:0.99\\\text{For Topic B}: 0.6875[/tex]

Step-by-step explanation:

Topic A: Two books are ordered

Topic B: Four books are ordered

Let X= number of books arrived

The probability that a book actually arrives in time is 0.9

i.e., p=0.9

For Topic A:

[tex]P(X\geq 1)=P(X=1)+P(X=2)\\\Rightarrow P(X\geq 1)= \;^2C_1 (0.9)^1(0.1)^(2-1)+\;^2C_2 (0.9)^2(0.1)^(2-2)\\\Rightarrow P(X\geq 1)=0.18+0.81\\\Rightarrow P(X\geq 1)=0.99[/tex]

For Topic B:

[tex]P(X\geq 2)=P(X=2)+P(X=3)+P(X=4)\\\Rightarrow P(X\geq 2)=1-[P(X=0)+P(X=1)]\\\Rightarrow P(X\geq 2)=1-[\;^4C_0(0.5)^0(0.5)^4 +\;^4C_0(0.5)^1(0.5)^3]\\\Rightarrow P(X\geq 2)=1-[0.0625+0.25]\\\Rightarrow P(X\geq 2)=0.6875[/tex]

the ratio of the number of girls to the number of boys in a school is 9:10. There are 900 boys in the school.
Work out the total number of students in the school

Answers

Answer:

1710 students.

Step-by-step explanation:

=>900/10=90

=>90x9=810 (girls)

=>810+900=1710 students in total

Hope this helps! ;)

What is the seventh multiple of 4 answer for brainiest

Answers

Answer:

4, 8, 12 ,16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60, 64, 68, 72, 76, 80, 84, 88, 92, 96, 100.

Which list orders the numbers from greatest to least

Answers

The third one is in order from greatest to least
Have a good day

PLS HELP!!!! :))) BDHDHSJWJDJD

Answers

Answer:

Your answer is "H"

Step-by-step explanation:

The answer is the answer is H

If y varies directly as x
and x= 4 when y = 14,
find y when x = -10.

Answers

Y=kX
14=k4
14=3.5 x 4
Y=3.5X
Y=3.5 x -10
Y=-35

Find the length of wire required to fence a circular park of diameter 280 m with 3 rounds..​

Answers

I'm guessing 3 rounds means 3 times around?

diameter = 280

circumference = dπ = 280π

280π x 3 = 840π

If you want it rounded it's about 2638.94 :)

f(x)=2x+5 find the interval where the function is increasing

Answers

It is always increasing.

To find increasing and decreasing intervals, we need to find where our first derivative is greater than or less than zero. If our first derivative is positive, our original function is increasing and if g'(x) is negative, g(x) is decreasing.

Jdjdjdjdjjdjdjjsjdjsjsjsk

Answers

Answer:

the 2nd answer

Step-by-step explanation:

i dont know how to explain it but the 2nd onr

calcule el cociente de los siguientes ejercicios
(-8)/(+2)​

Answers

Answer:

-4

Step-by-step explanation:

help plz
can someone simplify 3 to the power of 2 times 3 to the power of 3

Answers

Answer:

(9)(27) also 243

Step-by-step explanation:

So, 3^2=9, and 3^3=27, so (3^2)(3^3) is equal to (9)(27) or 243

I need help ? Answer below

Answers

Answer:

C

Step-by-step explanation:

Just trust me and mark brainliest if this helped ;)

Answer:

B. the bookstore spends more on supplies than advertising.

Step-by-step explanation:

3/12 is spent on supplies and 2/12 is spent on advertising

Select the correct answer
If h is a function and -7 is an element in its domain, then which of the following statements correctly describes the expression (-7)?
The expressiurhit-7). represents the output of h corresponding to the input of -7.
The expression (-7) represents that -7 is the only element in the domain of h.
The expression h(-7) represents the input of h corresponding to the output of -7.
The value of h should be multiplied by -7 to evaluate the expression
Reset
Submit

Answers

Answer:

The Expression h(-7) represents the output of h corresponding to the input of -7

Step-by-step explanation:

Answer:

C. The expression h(-7) represents the output of h corresponding to the input of -7.

Step-by-step explanation:

In a function written in function notation, the term h(x) represents the output value while x represents the input value, and h is the name of the function.

So, the expression h(-7) represents the output of h corresponding to the input of -7.

what is the approximate square root to
[tex] \sqrt{1070} [/tex]
with the solving way
​

Answers

Answer:

32 is the answer

Step-by-step explanation:

1070√ cannot be reduced  

 so the answer of 1070 = √≈32.71085446759225

What is 80% as a fraction in reduced form? StartFraction 1 Over 8 EndFraction StartFraction 4 Over 5 EndFraction StartFraction 8 Over 10 EndFraction StartFraction 40 Over 50 EndFraction

Answers

Answer:

4/5

Step-by-step explanation:

Answer:

its 4 over 5

Step-by-step explanation:

(trust me)

directions: solve each equation below and type your answer in the answer column. Type all answers in decimal form

Answers

Answer:

11. x = 3.5

12. x = 11.75

13. x = 79.6

14. x = 2.2

15. x = 24.80

16. x = 11.75

17. x = 196.5

isnsjsuudd

Name the quadrant in which lies.
tan(theta)<0 , csc(theta)<0
The angle (theta) lies in which​ quadrant?

Answers

Answer:

Quadrant III  (Quadrant Three)

Identify the reason that justifies each statement.

Answers

Answer:

Vertical angles

Step-by-step explanation:

The diagram shows two straight line intersecting to form vertical angles. One of such pair of vertical angles formed is <1 and <2.

Vertical angles are congruent to each other. Therefore, the reason why <1 ≅ <2 is because they are vertical angles or vertical angles pair.

Using the textbook example of 420 California school districts and the regression of testscores on the student-teacher ratio, you find that the standard error on the slope coefficient is 0.51 when using the heteroskedasticity robust formula, while it is 0.48 when employing the homoskedasticity only formula. When calculating the t-statistic, the recommended procedure is to A. use the homoskedasticity only formula because the t-statistic becomes larger B. first test for homoskedasticity of the errors and then make a decision C. use the heteroskedasticity robust formula D. make a decision depending on how much different the estimate of the slope is under the two procedures

Answers

Answer:

The answer is "Option C".

Step-by-step explanation:

Robust standard errors or generic White-Huber mistakes depending on this procedure. This is also recognized as the Variance Sandwich Stimator because of the appearance of the formula. Therefore, which is under homoskedasticity, robust error terms were appropriate, in which the standard deviations of its predictor variables are non-constant and are tracked across different values or linked to pre-time periods of an exponential function.

Which equation represents a line which is perpendicular to the line y= -5/4x - 4?


A. 4y - 5x = -4

B. 4x - 5y = 15

C. 5x + 4y = -8

D. 4x + 5y = 40

Answers

Answer:

b

Step-by-step explanation:

4x-5y=15

-5y=-4x+15

y=4/5x+15

4y - 5x = -4 represents the line which is perpendicular to the line y= -5/4x - 4. Option A is correct.

What are perpendicular lines?

Two lines are perpendicular to each other if the product of their slopes is equal to -1.

Given,

           y= -5/4x - 4

Slope of this line =m1 = -5/4

Let, slope of required line be m2

Then,        (m1)(m2) = -1

                 (-5/4)m2 = -1

                          m2 = 4/5

The required line has slope = 4/5

Hence, 4y - 5x = -4 has slope equal to 4/5.

To learn more about perpendicular lines visit:

https://brainly.com/question/18271653

#SPJ1

                       

Solve the equation. Please make sure you double-check your solution (answer).
15 = z -35

Answers

15+35 is 50
So z is 50

Reflect the trapezoid in the x-axis. Then translate the trapezoid 2 units left and 3 units up. The coordinates of the final image are:

Answers

Answer:

its already over the X axis 0_0

Step-by-step explanation:

I dont think you can flip that

Use continuity to evaluate the limit.
lim 16+radical x/ radical 16+x
1+9
Consider the intervals for which the numerator and the denominator are continuous.
The numerator 16+ radical x is contintuous on the interval
[0,00)
0
The denominator V16 + I is continuous and nonzero on the interval
(16,00)
X
The interval for which the quotient is continuous is the intersection of the above intervals.
16+
Therefore, the quotient
is continuous on the interval
716 +1
[-16,0]
X
Since 2
9 is in the interval (0, 0), then fis continuous at x = 9. Therefore,
19
16 + VE
lim
179 16 +2
f(9)
00
Question Help: Message instructor
Submit Question

Answers

Answer:  

Use continuity to evaluate the limit.

lim 16+radical x/ radical 16+x

1+9

Consider the intervals for which the numerator and the denominator are continuous.

The numerator 16+ radical x is contintuous on the interval

[0,00)

0

The denominator V16 + I is continuous and nonzero on the interval

(16,00)

X

The interval for which the quotient is continuous is the intersection of the above intervals.

16+

Therefore, the quotient

is continuous on the interval

716 +1

[-16,0]

X

Since 2

9 is in the interval (0, 0), then fis continuous at x = 9. Therefore,

19

16 + VE

lim

179 16 +2

f(9)

00

Question Help: Message instructor

Submit Question

Step-by-step explanation:

2x+9y=8 and 2x-9y=8 as an ordered pair

Answers

Answer:

hope it helps thanks I have made it in above

I will mark genius!!! Please help
change the fraction to a decimal and a percent. go three decimal places

Answers

1) 0.967 = 96.667%
2) 0.417 = 41.667%

Please solve, will mark brainliest

Answers

Answer:

6; 3

That is the answer

I need help answering 4 and 5
4. What’s the measure of 5. What’s the measure of

Answers

54 degrees is the answer
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