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.
Answers
Answer:
I’m backk
Step-by-step explanation:
Related Questions
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
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:
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
Someone PLEASE help me!! I don’t get this question.
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Brainliest if correct please help
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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
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)}
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.
Figure ABCD has vertice A (5,9) B (7,5) C (5,1) D (3,5)
Which names describe ABCD?
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merry christmas whats 1 + 1 help me
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Merry Christmas thank you!
Answer:
two
Thanks!!
Step-by-step explanation:
PLS HELP WILL GIVE BRANLIEST
Answers
simplify the following expression
(5x + x + 2)
Answers
Answer:
6x+2
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?
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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
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
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Answer:
Step-by-step explanation:
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:
The sum of two numbers is 59 and the difference is 21. What are the numbers?
Larger number:
Smaller number: 0
2.
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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.
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 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:
need help asap
please
Answers
15a = 180
/15 /15
a = 12
10(12) + 2
120 + 2
122
MAngle XYQ = 122°
Question 4 of 5
Find the length of side a.
A. 9
B. 34 square root
C. 2
D. 3
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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
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
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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:
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:
if an object has a density of 6.g/mL and you put it into water, will it sink or float?
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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?
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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:
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
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
Pls help
A.
B.
C.
D.
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Answer:
The answer is A so put it
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?
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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
I don't understand this either what's this
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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.
PLS HELP ME!!!!! IT IS TIMED
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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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Answer:
-3/2
Step-by-step explanation:
hope this helps
PLEASEE answer correctly !!!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!!!!!
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Answer:
Step-by-step explanation:
4 boys and 5 girls ratio (4:5)
4:5 ratio
hope this helps