Mathematics High School

A student wrote and simplified an expression for the perimeter of the rectangle. (Using the picture provided.)

perimeter.

Explain the mistake that was made in the simplified expression. Include the correct simplified expression in your explanation. Be sure to use math vocabulary words.

A Student Wrote And Simplified An Expression For The Perimeter Of The Rectangle. (Using The Picture Provided.)perimeter.Explain

Answers

Answer 1

Answer:

I’m backk

Step-by-step explanation:

Related Questions

PLS HELP WILL GIVE BRANLIEST

Answers

I think it is b but not for sure

A line of the equation has a slope of a/b, where a and b are integers.

What is the slope of the line that is perpendicular to this line?

Answers

Answer:

-b/a

Step-by-step explanation:

The slopes of perpendicular lines are negative reciprocals. That means that their product is -1.

slope of line = a/b

slope of perpendicular = -b/a

Pls help
A.
B.
C.
D.

Answers

Answer:

The answer is A so put it

The answer is A :) hope this helps

If , which equation describes the graphed function? A. y = f(-x) − 3 B. y = -f(x) + 3 C. y = -f(x) – 3 D. y = f(-x) + 3

Answers

Answer:

y=-f(x)-3

Step-by-step explanation:

when f is negative it is reflected over the x-axis and -3 means to translate 3 units down

y = -f(x) – 3 describes the graphed function.

When f is negative it is reflected over the x-axis.

-3 means to translate 3 units down.

How do you identify a function?

By using inspecting the inputs (x-coordinates) and outputs (y-coordinates), you could decide whether or no longer the relation is a function. Keep in mind, that this is a feature each input has only one output.

What are examples of graph functions?

Function Graphs.Linear. Quadratic. Cubic. Square Root. Cube Root. Absolute Value. Reciprocal.

Learn more about graph functions here: https://brainly.com/question/4025726

#SPJ2

The sum of two numbers is 59 and the difference is 21. What are the numbers?
Larger number:
Smaller number: 0
2.

Answers

Answer:   The larger number is 40.

The smaller number is 19

Step-by-step explanation:

x + (x-21) = 59   This is the number and the  number difference add to 59.

x + x = 59 + 21    Add 21 to both sides. Combine like terms.

2x = 80  divide both sides by 2

x= 40 This is the first number.  Subtract 21 to get the second number

40 - 21 = 19

The difference between 40 and 19 is 21.

19 + 40 = 59

______________________

Not sure why this is in the question "Smaller number: 0

2.

Brainliest if correct please help

Answers

Answer:

H

Step-by-step explanation:

Because 20 percent is 24 dollars off and the second option is 30 dollars off and the third is 40 dollars off and 120-40 is 80 dollars so sentence H is correct

Please give me brainiest  

simplify the following expression
(5x + x + 2)​

Answers

Answer:

6x+2

Step-by-step explanation:

6x+2......................

Layla emptied out her change jar to buy a new binder for school. She found 147 coins consisting of dimes and nickels that totaled $11.65. Write a system of equations that could be used to determine how many dimes, d, and how many nickels, n, Layla had in her change jar.

Answers

Answer:

d + n = 147

0.10d + 0.05n = 11.65

d = 86, n = 61

Step-by-step explanation:

Let

Number of dimes = d

Number of nickels = n

Total coins = 147

Total value = $11.65

d + n = 147 (1)

0.10d + 0.05n = 11.65 (2)

From (1)

d = 147 - n

Substitute d = 147 - n into

0.10d + 0.05n = 11.65

0.10(147 - n) + 0.05n = 11.65

14.7 - 0.10n + 0.05n = 11.65

- 0.10n + 0.05n = 11.65 - 14.7

-0.05n = -3.05

n = -3.05 / -0.05

= 61

n = 61

Substitute n = 61 into

d + n = 147

d + 61 = 147

d = 147 - 61

d = 86

Question 4 of 5
Find the length of side a.


A. 9
B. 34 square root
C. 2
D. 3

Answers

The answer is D.3
You would need to set up the pythagorean theorem
a^2+4^2=5^2
next you would have
a^2+16=25
now subtract 16 from both sides and you are left with
a^2=9
now take the square root of both sides
a=3

PLS HELP ME!!!!! IT IS TIMED

Answers

Answer:

C. 13

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

what is -1.5 in a fraction i need some help T^T

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It’s -3/2 as in improper fraction and 1 1/2 as a mixed fraction

Answer:

-3/2

Step-by-step explanation:

hope this helps

The question is in the picture, Adding and subtracting radicals

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Answer: Its B.

Step-by-step explanation:

Just took the test. Also you just take the surface area and divide it by "s".

√30-2√5m is your answer

Answer:

√(180/6)- √(120/6)

√39-2√5m

Solve x^2 - 6x - 72 = 0 using the quadratic formula. Clearly show all appropriate
steps leading to your solutions. Someone pls help me step by steps
X - 6x - 72 = 0

Answers

Answer:

Step-by-step explanation:

if an object has a density of 6.g/mL and you put it into water, will it sink or float?​

Answers

Step-by-step explanation:

If an object has a higher density than the fluid it is in (fluid can mean liquid or gas), it will sink. If it has a lower density, it will float. Density is determined by an object's mass and volume. If two objects take up the same volume, but have one has more mass, then it also has a higher density.

Marla made an error when solving the equation shown. What was her error, and how should she fixt it?​

Answers

Answer:

I need a picture of the problem

Answer:

The answer is: In Step 1, she used the Distributive Property incorrectly. She should have distributed the 3 to the 2. The equation should have been

3x + 6 + 1 = 24.

Step-by-step explanation:


Find the circumference of a circle with a diameter of 20 centimeters. Round your answer to the nearest centimeter.
6 centimeters
126 centimeters
31 centimeters
0 63 centimeters

Answers

Answer:

63 centimeters

Step-by-step explanation:

What we know:

A cricle has a diameter of 20 cm.

To find circumference, use πd or 2πr.

3.14(10 * 2)

3.14(20)

62.8 cm, which rounds to 63 cm.

I don't understand this either what's this

Answers

Answer:

It's called a transversal lol

Step-by-step explanation:

I know that you were thinking that there should be a letter somewhere but you can't figure out the name of a line unless the name is shown lol

Pls mark Brainliest.

need help asap
please

Answers

10a + 2 + 5a - 2 = 180
15a = 180
/15 /15
a = 12


10(12) + 2
120 + 2
122


MAngle XYQ = 122°

You can buy a can of tennis balls for 2$. Each can holds three tennis balls how much will twelve tennis ball cost

Answers

Answer:4

Step-by-step explanation:4x3= 13

Answer:

36$

Step-by-step explanation:

how to solve using Substitution or Elimination?
y=3x-1

y=2x+2

Answers

By elimination:

y = 3x - 1

y = 2x + 2

Subtract the second equation from the first

0 = x - 1

y = 2x + 2

Subtract the first equation from the second

0 = x - 1

y = x + 3

Subtract the first equation from the second again

0 = x - 1

y =      4

Subtract x from both sides of the first equation

- x =  - 1

y =      4

Divide the first equation by (-1)    

x =  1

y =  4

So, the solution is  x = 1  and  y = 4   {or: (1, 4)}

Figure ABCD has vertice A (5,9) B (7,5) C (5,1) D (3,5)
Which names describe ABCD?

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ABCD describes a rhombus.

I need help on this please

Answers

Answer:

25/3

Step-by-step explanation:

Set the equations equal to each other since the lines are parallel.

(x+20)=(4x-5)

-x  +5       -x   +5

25/3 = 3x/3

x = 25/3

Since these equations are consecutive interior angles, they will add up to 180.
The equation will be (x+20)°+(4x-5)°=180.

(x+20)+(4x-5)=180
5x+15=180
5x=165
165/5x
=33°

You can make sure your answer is correct by putting your x back into the equation.
(33+20)+(4•33-5)
53+132-5
53+127
180

the area of a rectangular concrete patio is 70 square meters the perimeter is 34 meters what are the dimensions of the patio

Answers

Answer:

7 and 10

I hope this is correct and helps.

Answer:

7 and 10 because

perimeter you add all sides together like :

7 +7 +10 +10

14+20

34 (which checks out)

and then for area you multiply length and width and 7 x 10= 70 which checks out

Step-by-step explanation:

Someone PLEASE help me!! I don’t get this question.

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the answer is A. x=-2.

megan solved the following exponential equation for x. what did she do wrong​

Answers

Answer:

take a better photo this is blurry

Step-by-step explanation:

Find the distance between points P(8, 2) and Q(3, 8) to the nearest tenth.

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Answer:

7.8

Step-by-step explanation:

merry christmas whats 1 + 1 help me

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2!
Merry Christmas thank you!

Answer:

two

Thanks!!

Step-by-step explanation:

Please help me solve these 3 problems. Solve for x state the properties used and check your answer. I’ll mark as brainliest.
a) 5(x - 2) - 6 = 24
b) 22 = (3x+5) - 18
c) -48 = -4(2x+5)+ 5x - 1

Answers

Answer:

a) 5x=8 use a calculator and use distributive property

b) 22=3x+5 -18

22=3x-13

9=3x

x=3

distributive property

c)-48= -8x-20+5x-1

-48= -3x-21

-27= -3x

x=7

distributive property

Step-by-step explanation:

The local ice cream shop surveyed their costumers to see wich flavor of ice cream is most popular.125 people chose chocolate as their favorite flavor,wich represents 25% of the costumers surveyed.How many total costumers were surveyed?

Answers

Answer: The total costumers were surveyed = 500

Step-by-step explanation:

Let x = total costumers were surveyed.

Given : 125 people chose chocolate as their favorite flavor, which represents 25% of the costumers surveyed.

25% of x = 125

[tex]\Rightarrow\ \dfrac{25}{100}\times x = 125\\\\\Rightarrow\ \dfrac{1}{4}x=125\\\\\Rightarrow\ x=125\times4\\\\\Rightarrow\ x= 500[/tex]

Hence, the total costumers were surveyed = 500

PLEASEE answer correctly !!!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!!!!!

Answers

Answer:

Step-by-step explanation:

4 boys and 5 girls ratio (4:5)

4:5 ratio

hope this helps

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