Answer:
x = -8/3 and y = -49/3
Step-by-step explanation:
(Step 1) To solve using substitution, you first need to isolate a variable in one of these equations. I chose to isolate "y" in the following equation.
-8x + y = 5 <--- Original equation
y = 5 + 8x <--- Add 8x to both sides
(Step 2) Now, substitute (5 + 8x) for "y" in the second equation.
5x - y = 3 <--- Original equation
5x - (5 + 8x) = 3 <--- Substitute 5 + 8x for "y"
5x - 5 - 8x = 3 <--- Distribute (-) in the parentheses
-3x - 5 = 3 <--- Combine terms with "x"
-3x = 8 <--- Add 5 to both sides
x = -8/3 <--- Divide both sides by -3
(Step 3) Since you know the value of "x", plug it into one of the equations to solve for "y".
y = 5 + 8x <--- Original (rearranged) equation
y = 5 + 8(-8/3) <--- Plug (-8/3) for "x"
y = 5 - 64/3 <--- Multiply
y = 15/3 - 64/3 <--- Convert 5 into a fraction
y = -49/3 <--- Subtract
(Step 3.5) You can check your work by plugging "y" into the other equation to see if the answer for "x" is the same.
5x - y = 3 <--- Original equation
5(-8/3) - y = 3 <--- Plug (-8/3) for "x"
-40/3 - y = 3 <--- Multiply
-40/3 - y = 9/3 <--- Convert 3 into a fraction
-49/3 - y = 0 <--- Subtract both sides by 9/3
-49/3 = y <--- Add both sides by "y"
The value of the system of equations is x = -8/3 and y = -49/3.
A card was selected at random from a standard deck of cards. The suit of the card was recorded, and then the card was put back in the deck. The table shows the results after 40 trials.
What is the relative frequency of selecting a diamond?
23%
25%
30%
42%
Answer:
23%
Step-by-step explanation:
Sarah described the following situation:
When more apples grew in the backyard, the pet cat stayed indoors for a longer time.
Which of the following best describes the situation?
This is an example of correlation because there is an obvious relationship between the two scenarios.
This is an example of causation because apples cause cats to stay indoors.
This is an example of correlation because apples cause cats to stay indoors.
This is an example of causation because cats dislike apples.
Step-by-step explanation:
This is an example of correlation because there is an obvious relationship between the two scenarios.
This is an example of correlation because there is an obvious relationship between the two scenarios. The correct option is A.
What is a correlation?The statement "when more apples grew in the backyard, the pet cat stayed indoors for a longer time" is an excellent example to explain the difference between causation and correlation.
Is the very fact that the apples grew in the backyard what makes the pet cat stay indoors longer?
Sure, you know it isn't. sure there is another cause that influences both the growing of apples and the time the pet cats stay indoors. So, there is no causality relationship.
Given that some fact is influencing both phenomena, you find that they behave in a way that one permits predict the other, which is what correlation indicates, but not that one is the cause of the other.
When you know the cause you might change the final behaviour, but when you know that the variables are correlated you just can use one to predict the other.
Therefore, this is an example of correlation because there is an obvious relationship between the two scenarios. The correct option is A.
To know more about correlation follow
https://brainly.com/question/1800021
#SPJ2
Help please, thank you.
CAN SOMEONE PLSSS HELP I AM GONA FAIL.
Answer:
A is false, the rest are true.
(a) Simplify x² − (x − m)(x + m). (b) Using your answer to (a), write down the value of 1023² - 1022 x 1024 without using a calculator.
Answer:
Step-by-step explanation:
A helicopter takes off from ground level and rises to a cruising elevation. The pilot descends to ground level, picks up a reporter, and transports her to a helipad on top of a building. Which graph shows the height of the helicopter over time? HElp pleasee please correct answer
Answer and step-by-step explanation:
starting at ground level means the helicopter starts at the bottom, works its way up to a cruse, then drops to ground level then goes to the top of a building meaning it would look up-and-down like
this graph should be the one you're looking for
hope this helps:)
Type a digit that makes this statement true.
180,
93 is divisible by 9.
Submit
pls answer I will mark brainliest
Answer: 147 cm²
Step-by-step explanation:
Since it says to use 3 for pi, and the radius is given to us (7 cm), we will plug in and solve for the area.
A = πr²
A = (3)(7)²
A = 147 cm²
Help ASAP its due today!
Answer:
The answer is D) 60
Step-by-step explanation:
The circumference of a circle is 125.6 millimeters. What is the circle's diameter?
Use 3.14 for .
Answer:
C = 2 pi r, so diameter is 40!
Step-by-step explanation
125.6 = 2 pi r
125.6 divided by 2 is 62.8.
Now its, 62.8 = pi times r
62.8/3.14 = 20.
r = 20
but this is the radius so the diameter is 2 times for than the radius. 20 x 2 = 40
Math for the smart people
Brainliest if Correct!! Help QUICK....
Replace x with the x value solve to get the y value.
see attached picture for answers.
In which class was his scores the closest to:
Answer:
Theater
Step-by-step explanation:
MAD stands for Mean Absolute Devastation, which is the average difference between numbers/data.
whats greater brianliest + MAX ponits or 4 x 2160 4 x 2610
It is equal. The same either way. :)
Hey there!
PROBLEM #1. 4 * 2,160
4 * 2,160
= 2,160 * 4
= 2,160 + 2,160 + 2,160 + 2,160
= 4,320 + 4,320
= 8,640
Therefore, the answer should be: 8,640
Problem #2. 4 * 2,610
4 * 2,610
= 2,610 * 4
= 2,610 + 2,610 + 2,610 + 2,610
= 5,220 + 5,220
= 10,440
Therefore, the answer should be:
10,440
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)
One afternoon, Dillon and 3 friends visit the zoo. They split the cost of parking the car evenly. Then each person buys a ticket to enter the zoo. By the end of the afternoon, each person has also purchased 2 bottles of water.
• Let p represent the parking cost.
• Let t represent the ticket cost.
• Let w represent the cost of a bottle of water.
Use the dropdowns to complete the statements.
(A) One way to express the total cost is to find the cost per person for a ticket and water. Then multiply this expression by
Choose...
and add
Choose...
.
(B) The expression for total cost described in part A is
Choose...
+
Choose...
.
(C) Another way to express the total cost is to add the cost of
Choose...
tickets plus the cost of
Choose...
bottles of water plus
Choose...
.
Answer:
A. 3 then add p
B. 3(t+2w) + p
C. 3, 6, p
explanation:
(A) One way to express the total cost is to find the cost per person for a ticket and water. Then multiply this expression by
3
and add
p
(B) The expression for total cost described in part A is
3(t+2w)
+
p
(C) Another way to express the total cost is to add the cost of
3
tickets plus the cost of
6
bottles of water plus
p
Daily Math Question
You can identify sample spaces for compound events using organized lists, tables, and tree diagrams. Which of the three methods do you find easiest to use? Which method is the most helpful? Why?
What is the definition of the Fundamental Counting Principle? What does this principle state? How can the principle be used to help you identify a sample space for a compound event? What are the limitations of using the Fundamental Counting Principle when determining the probability of an outcome? Support your answers with an example.
Answer:
The fundamental counting principle is used to count the total number of possible outcomes that are in a situation.
What does the fundamental counting principle state?
The fundamental counting principle states that if there are n ways of doing something, as well as m ways of doing another thing, then there are n×m ways to perform both of these actions.
The Fundamental Counting Principle helps when determining the sample space of probability as it figures out the total number of ways the combination of events can occur. Therefore, it is used as a guide when determining the sample space of a probability.
Lastly, the limitation is that the Fundamental Counting Principle is that it assumes that each basic event is equally probable, which does not necessarily have to be true.
HELP ME HELP ME PLEASE
Answer:
11126
Step-by-step explanation:
The mean of a set of data is another name for its average. It is the sum of the data, divided by the number of numbers in the sum.
__
If you use a calculator to help you with the computation of the addition or division, you may as well use the calculator's "mean" function to do the job.
The mean of the given 6 values is their sum, divided by 6. The units of the mean are the same as those of the contributors.
(1117 +1409 +675 +536 +1398 +1621)/6 = 6756/6 = 1126 . . . . degrees F
The mean of the data is 1126 °F.
A company printed 10,398 flyers for its sales people. Each sales person received the same
number of flyers. How many sales people could there be?
Select all the possible numbers.
5
3
2
6
Answer:
3,2,6
Step-by-step explanation:
if you divide 10,398 by all numbers 3,2 and 6 have whole numbers:)
Match each set of equations with the move that turned the first equation into the second.
7th grade math hard for me easy for you
Answer:
x=12
Step-by-step explanation:
180-140=40
40+40=80
8x12=96+4=100
11x+2=5x+10+58
show steps
Step-by-step explanation:
=> 11x + 2 = 5x + 10 + 58
=> 11x - 5x = 10 + 58 - 2
=> 6x = 66
=> x = 66/6
=> x = 11
Hope it helps you!!Hi student, let me help you out! :)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
We are asked to solve the equation [tex]\large\pmb{11x+2=5x+10+58}[/tex].
[tex]\triangle~\fbox{\bf{KEY:}}[/tex]
The goal is to get x all by itself.So here's how we solve the equation...
///\\\///\\\///\\\///\\\///\\\///\\\///\\\///\\\///\\\///\\\\///\\\///\\\///\\\///\\\///\\\///\\\///\\\
Notice that we can add 10 and 58 right off the bat:
[tex]\large\pmb{11x+2=5x+68}[/tex]
Now we subtract 2 from both sides of the equal sign:
[tex]\large\pmb{11x=5x+66}[/tex]
Now we subtract 5x from both sides of the equal sign:
[tex]\large\pmb{6x=66}[/tex]
Divide both sides by 6:
[tex]\large\pmb{11}[/tex]
That's the value of x.
Hope it helps you out! :D
Ask in comments if any queries arise.
~Just a smiley person helping fellow students out :)
Whats 2x(4+5x)
If the x was 5.
Answer: 290
Step-by-step explanation:
Plug in the value 5 for x
2(5) (4+5(5))
Then use PEMDAS to solve:
P - parentheses (Multiple then add)
5(5)=25
4+25=29
M - multiple
2(5)=10
10 (29) = 290
Answer:
THE ANSWER IS 58
Step-by-step explanation:
622,620 people voted in the Lancaster City Council election. Each candidate received the
exact same number of votes. How many city council candidates could there have been?
Select all the possible numbers.
3
9
4
10
Jay
Submit
Answer:
All of the above
Step-by-step explanation:
I'm not sure, but if you divide the number of people by each candidate, you'll get a value that the number of candidates will equal the number of people. I repeat I'm not sure of my answer.
help me please and remember SHOW ALL WORK
TYSM!
Graphing Coordinates
I already have the numbers just please put them on the graph that’s all!
I’ve been so stressed this will help so much
NEED HELO FAST!
Which of the following statements is true for 5.78?
A) It's rational because 5.78 = 526/2 33.
B) It's irrational because 5.78 = 5.787878.
C) It's irrational because 5.78= 5.787878.
D) It's rational because 5.78 = 5.787878.
its rational - 5.78 = 5.787878.
D.
explanation:
We have been given a number 5.78. We are asked to choose the correct statement which shows that 5.78 is a rational number.
Upon looking at our given choices, we can see that only option A is the correct choice as it has repeating digits (78) after decimal.
We know that a number with repeating decimals can be written as a fraction, therefore, option D is the correct choice.
Answer:
hello
Step-by-step explanation:
its D
can someone explain how to do this, I don't want the answer?
The table is filled out by following these steps:
Step 1) Pick any number you want for x. Usually small values work such as x = 0, but you can choose anything you want. Be sure it fits within the window of the graph.Step 2) Replace x with that number you picked. If you picked x = 0, then y = (1/3)x becomes y = (1/3)*0 = 0. Meaning x = 0 leads to y = 0. The point (0,0) is on the graph.Step 3) Go back to step 1 and repeat the process with other x values. I recommend picking multiples of 3 so you can avoid fractional values of y.Follow those steps listed above so you can fill out the table. Each row of the table generates a different (x,y) point on the graph. Then draw a line or curve through the points. In this case, it's a straight line.
This straight line has a slope of 1/3 because y = (1/3)x is in slope-intercept form y = mx+b where,
m = 1/3 = slopeb = 0 = y interceptA slope of 1/3 means "go up 1, over to the right 3" when hopping from point to point along the line.
The unit rate and slope are the same thing when it comes to linear equations.
Can someone answer this and give an explanation
Point A is located at (-2, 4). After it is transformed, point A' is located at (2, 4). What could the transformation be?
1. A reflection in the y-axis
2. A translation 4 units to the right
3. A rotation of 90° around the origin
4. A translation 4 units up
please look at answer is attched
Money Tracker (Additional Instructions in Photo)
Take a screenshot of the following photo and !!SHOW ALL WORK!!
Please help, this assignment will boost my grade up to an A+!
(I have a lot more I need help with too! If you can help. It’s all math)
Answer:
You have to add all the money up then subtract it by the following money you earned.
Step-by-step explanation:
45.35+45.25= 90.5
1.39x75=104.25
0.68x8=5.44
68.72x2=137.44
1.85x37=68.45
0.13x900=117
52.85x12=634.2
52.85x2=105.7
19.49x3=58.47
2750-1321.45=1428.55
(the number 1321.45 came from everything added together, which i then subtracted from 2750 to get 1428.55 as your remaining balance.