Answer:
1) 346 ft.
2)10 ft.
3)60 ft.
Step-by-step explanation:
1) the equation for finding the perimeter of a rectangle is P=2L+2W. so, P=2(120)+2(53). P=240+106. P=346.
2) The equation is P=2L+2W. P=2(3)+2(2). P=6+4. P=10
3) the equation for finding the perimeter of a square is P=4s. So P=4(15) P=60
Hope this helps!
3. Given a system of two equations in two variables, replacing one equation by the sum of that equation and a multiple of the other produces a system with the same solution. Show why this is true by solving the system of equations given. Justify the reason for each step. HINT: Use the addition property of equality and multiplication property of equality in your answers. (8 points: 1 point for each question)
5x + 2y = 7
3x – y = 2
To solve the system using elimination, first multiply the bottom equation by 2. Write the new system of equations. (1 point)
Why is this multiplication allowed? (1 point)
What variable will be eliminated when the equations are combined after
the multiplication? (1 point)
Next, add the equations together. Your answer should be a single equation with one variable. (1 point)
Why can you add the equations? (1 point)
Solve the equation for x. (1 point)
Substitute x back into one of the equations to solve for y. (1 point)
What is the solution to the system of equations? (1 point)
Answer:
Step-by-step explanation:
To solve the system using elimination, first multiply the bottom equation by 2. Write the new system of equations. (1 point)
5x + 2y = 7
6x –2y = 4
Why is this multiplication allowed? (1 point)
Because the entire equation was multiplied by the same number, the equation remains the same.
What variable will be eliminated when the equations are combined after the multiplication? (1 point)
The Y variable
Next, add the equations together. Your answer should be a single equation with one variable. (1 point)
11x = 11
Solve the equation for x. (1 point)
X = 1
What is the solution to the system of equations? (1 point)
X = 1 and Y = 1 so the answer is (1, 1)
(If you solve this again, but eliminate the X variable, you will still receive that answer 1, so Y = 1)
Sorry my first answer was wrong
A circle has a radius of 15 centimeters and an area of 225π cm2. If the radius is multiplied by 3, what is the area of the new circle?
i have alot of work to do so this would make me go faster if u help me with this question In the picture
Please help me with this answer!
Answer:
y=7/4x
Step-by-step explanation:
8 2/9 - 2 2/3
NO LINKS OR ABSURD, OUT OF CONTEXT ANSWERS, THANK YOU.
Answer: 5 5/9
Step-by-step explanation:
try it
Evaluate 6 m plus 1 for m equals negative 2. NO LINKS
Answer:
-11
Step-by-step explanation:
first substitute m for -2. now the equation is 6(-2)+1. next multiply 6 by -2 and you get -12. now add 1 to -12 and you get -11
Sergio claims that StartFraction 20 Over 20 EndFraction = 1 percent. Which statement is true regarding his claim?
Answer: You dont give the statement. But 20/20 is 100% if that helps!
Step-by-step explanation:
Which equation is shown in the graph?
Best answer gets brainliest!
Answer:
C) y=x^2+x-6
Step-by-step explanation:
Looking at the first picture, the equation is way too high, thus A is incorrect
Looking at the second picture, the equation is also too high, thus B is incorrect
Looking at the third picture, the equation is at the graph, thus C is correct
Looking at the fourth picture, the equation is more at the right than at the left thus the equation is incorrect
Hope this helps!
You and your family go out for dinner the bill is $240.00. You have a coupon for 20% off. After the discount, you want to leave a tip of 15%. How much in total , will you leave the waiter?
Answer: 28.8
Step-by-step explanation: first we find out 20 percent of 240=48
240-48=192 after discount
15 percent of 192= 28.8
5(20 + ) = 100 + 95 im tryna watch anime but i gotta do another test
Answer:
100=195
Step-by-step explanation:
Im sorry it sort of makes no sense since because of the +.
Solve for b.
b - 7 = -20
A. b = -27
B. b = -13
C. b = 13
D. b = 27
Answer:
B. b = -13
Step-by-step explanation:
b - 7 = -20
move variables and numbers to different sides of the equal sign by adding 7 to both sides
b - 7 + 7 = -20 + 7
b = -13
Morgan has an 8 1/2 foot board that must be cut into boards that are feet long. How many of the smaller boards can he get from the 8 1/2 foot board?
Which of the following equations could you use to solve the problem?
x * 8 1/2 = 5/6
8 1/2 * x = 5/6
5/6 * 8 1/2 = x
8 1/2 / 5/6 = x
Answer:
8 1/2 / 5/6 = xStep-by-step explanation:
8 1/2 foot board to be cut into 5/6 feet boards.
Number of smaller boards is:
8 1/2 ÷ 5/6 = 17/2 ÷ 5/6 = 17/2 × 6/5 = 51 / 5 = 10 (the whole part)Correct equation is D
Which term best describes the relationship between the two events described below?
When a bowler gets 12 consecutive strikes in a game, he bowls a perfect game.
A. causation
B. The events are not related.
C. correlation
D. implication
Answer:
Correlation
Step-by-step explanation:
I think
The relationship between the two events is one of implication (Option D.), where achieving 12 consecutive strikes implies the occurrence of a perfect game, but it does not necessarily indicate a causal or universally correlated relationship.
The term that best describes the relationship between the two events described is implication.
In this context, the statement implies that when a bowler achieves 12 consecutive strikes in a game, it is an indication or implication that the bowler has bowled a perfect game. This means that if the first event (getting 12 consecutive strikes) occurs, it logically leads or implies the occurrence of the second event (bowling a perfect game). However, it does not necessarily mean that every perfect game is achieved through 12 consecutive strikes, as there can be alternate ways to achieve a perfect game.
Therefore, the relationship between the two events is one of implication, where the occurrence of the first event suggests or implies the occurrence of the second event, but they are not always causally linked or universally correlated.
To know more about events, refer here:
https://brainly.com/question/10999000
#SPJ2
HELPPPPPPP!!!! I NEED ANSWER QUICK!!!!
Answer:
x=8
Step-by-step explanation:
2(2x+7)=46
2x+7=46/2=23
2x=23-7=16
x=16/2=8
Answer:
x = 8.9
2(2x+7)=46
4x+14=46
4x=35
x=8.9
If anyone can figure the answer, please tell me. Anything would be helpful :)
I have to master 20 lessons for khan all 100% and it's very difficult for some of them.
It wasn't all that bad. The snowmobile only needed towing out. From that incident, she owes them $42. How much is her total debt to her parents?
Hi! If you are willing to help just help pls!.
Write T or F (true, false) if the statement is one of those. If it is false correct it, if it is true leave the correction space blank. Thank you!!!
The camp has an elevation of 2700m. It is 1500m east of the origin. What are the camp's x and y coordinates?
Please help!! will give brainliest. Will be helpful
The manager of a local automobile store wants to conduct a customer satisfaction survey. Who should the manager survey to best find out what he wants to know?
Answer:
the customers
Step-by-step explanation:
because they are the main target of this survey
I need this ASAP please!!!
Select the correct answer.
Which equation, when solved,
gives 8 for the value of x?
A 5/2x + 7/2 = 3/4x + 14
B 5/4x -9 = 3/2x -12
C 5/4x -2 = 3/2x -4
D 5/2x - 7 = 3/4x + 14
Answer:
c
Step-by-step explanation:
I would appreciate this a lot if someone could help me with this.
Answer:
Question no. 2 answer is A 100percent confrom
Michael consumes a 16-ounce bag of potato chips and 12-ounce bag of pretzels every day after school. How many more ounces of potato chips than pretzels will Michael have eaten at the end of a 5 day school week?
A.
20 ounces
B.
80 ounces
C.
60 ounces
D.
28 ounces
Every day, Michael consumes 4 more ounces than the pretzels. Multiply 5 by 4 to recieve the answer:
4 x 5 = 20
So the answer is A.
Solve 3(x−13)=y−2 for y. Then tell whether x and y show direct variation. Please help me with this. 60 points!
Answer: if you put 60 points onto the question it divides it by 2 for 2 different question get half of what it is so if you want each person to get 60 you need to add 120 points
Step-by-stepStep-by-step explanation:
Answer:
y=3x+13
Step-by-step explanation:
look at the attachment i have. also its asks for the principle of account A then B and also witch one made more in the first month. please hurry because its due today
Answer:
Account A
Step-by-step explanation:
It's because in 9 months for account a you the simple interest rate you earned is $4.16 but account B took you 33 months just to get $24.20? That would be too long, you would spend way to long working for 33 months just to get 24.20? It would not be worth it. This is why the answer is Account A.
Answer:
Account A is the correct answer;according to my understandings.
Need answer fast, for this st*pid IXL question:( 10 points! Hurry please! I have 10 more questions left to get to 100%!!!!
poor ixl 78+78 i think because it had 78 and she drove 78
Someone help me with this please, I really need help and its due tmrw...PLEASE
Answer:
The number of hours a student should spend on their homework to expect a 94 on the quiz.
Mr. DaCosta and his workers are tiling a bathroom wall using square-inch tiles. The area of the wall is 6,048 square inches. There are 72 rows of tiles.
How many tiles are in each row?
A.
85
B.
84
C.
840
D.
805
Answer: B.84
Step-by-step explanation:
1) Substitute the given information into the equation Area= length * width
2) 6,048 = 72 * x
3) Divide by 72 to find x
6,048/72 = 84
4) The answer is 84 tiles in each row
Does anyone know this cause I'm kinda confused
HELP ASAP PLSPLSPLSPLSPLSPLSPLSPLSPLSPLS
Aeris reads the temperature of a liquid in a lab experiment. The temperature of the liquid is 7.2ºF. After 5 hours, she reads the temperature of the liquid again. The temperature of the liquid is now −1.6°F. Aeris plots the points on a number line to determine the temperature change between these two readings. How much did the temperature decrease? Enter your answer as a decimal in the box.
Answer: 8.8 (-8.8'F)
Step-by-step explanation:
What we know:
Temperature started as 7.2Temperature ended as -1.6We need to find the differenceHow to solve:
By doing simple subtraction, we can solve this.
Process:
Write equation 7.2 - (-1.6) = ?Simplify 7.2 + 1.6 = ?Solve = 8.8Solution: 8.8 (-8.8'F)
*Note: The temperature decreased by 8.8'F, but it increased/changed by -8.8'F. Be careful of wording.
ive found 2 i just need one more but if you can list everything it can be great