(Will give 20 points) Find the solution to the system of equations by substitution. -4x + y = -10 and y = x + 2
Include process steps!
The scatter plot below represents the weight of a box of cookies based on the number of cookies in the box. A best-fit line shows the relationship.
Answer:
a. true
b. false
c. false
d. false
e. true
Step-by-step explanation:
a is true because the graph is measuring the weight of the box based on the number of cookies in it, and the box has weight even without cookies in it.
b is false because the slope of the line is 1/2, and each cookie weighs 1/4 oz.
c is false because there is an association between the number of cookies and the weight of the box.
d is false because that is the weight of one cookie, and doesn't take into account the weight of the box by itself.
e is true because the graph shows that at 13 cookies, the box weighs around 3.75 ounces.
To find the volume of a rectangular prism you multiply the 3 dimensions, length x width x height. What combination of numbers will give me a volume of 17?
Answer:
1, 1, 17
Step-by-step explanation:
17 is a prime number. This means the only factors are 1, and 17. This means that since only 17, and 1 multiply to 17, to get a volume of 17 you can only use 1, and 17 (1, 1, and 17)
Need help for all 3 questions
Answer:
1 is c
2 is a
3 is a
Step-by-step explanation:
just solved them
(Will l give 25 points!) Solve the system of linear equations by substitution. -8x + y = 5 and 5x - y = 3
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.
HELPPPP PLSSSSSSSSS HELPPPPPP PLSSSSS.
Answer:
the answer is a, Charles Ives
PLEASE HELP ME WITH THIS T-T
Answer:
-6 < x [tex]\leq[/tex] 6
Step-by-step explanation:
-5 < [tex]\frac{x-4}{2}[/tex] [tex]\leq[/tex] 1
Multiply all the sides by 2
-10 < x-4 [tex]\leq[/tex] 2
Add 4 to all the sides
-6 < x [tex]\leq[/tex] 6
Answer:
-6 < x < 6
Step-by-step explanation:
either way its still higher than -5 and lower than 1
Answer all 4 questions and ill mark brainiest when I can thanks
ASAP I NEED AN ANSWER
Answer:
His brother gets 8 apples
His friends gets 4 apples
He gets 12 apples
Step-by-step explanation:
brother: friend himself::total
2 1 3 2+1+3 = 6
He has a total of 24 apples
24/6 = 4
Multiply each term by 4
brother: friend himself::total
2*4 1*4 3*4 6*4
8 4 12 24
His brother gets 8 apples
His friends gets 4 apples
He gets 12 apples
how many inches is 20 yards?
Answer:
720
Step-by-step explanation:
1 yard = 36 inches
20*36
720
Question
You made a cone-shaped paper funnel to get all of the glitter back in the original container. It has a slant height of 12 inches and a radius of 8 inches. About how many square inches of paper is used to make the cone?
Answer:
The answer is 301 square inches.
Step-by-step explanation:
What is the least common denominator of 2/6 and 7/8
Answer:
Therefore the least common denominator is 24.
Step-by-step explanation:
2/6 = 8/24
7/8 = 21/24
No more explanation.
Answer:
24
Step-by-step explanation:
Both denominators 6 & 8 have a LCM of 24
Therefore the least common denominator is...
How can I solve this?
PLS HELP WILL GIVE BRANLIEST: Draw the image of triangle ABC under a dilation whose center is P and scale factor is 1/3
Answer:
Draw the image of triangle ABC under a dilation whose center is P and scale factor is 1/3
Step-by-step explanation:
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.
I need some help on this, please. I already did the first problem. Here are the directions:
Write and solve a proportion to answer the question.
34 is 75% of what number?
34w= 12/16
w= what?
Can anyone please help me?
Answer:
Write and solve a proportion to answer the question.
34 is 75% of what number?
34w= 12/16
w= what?
Can anyone please
Step-by-step explanation:
Answer:
45.33
Step-by-step explanation:
whats 2 + 2 will give brainliest!
Answer: 4
Step-by-step explanation:
first put 2 fingers up
then with the other hand put 2 more fingers up
then count and you get 4
or you could use a calculator
Can any of you math wiz help me I am having trouble.
Answer:
1 - True
2 - False
3 - False
4 - True
Step-by-step explanation:
N/A
Please help me and please don’t answer if you don’t know pleaseee!!!!
Answer:
c
Step-by-step explanation:
Write 60/100 as a decimal
Answer:
0.6 OR 0.60
Step-by-step explanation
A trick to use is that always put the zero first. For example 50/100 would equal 0.50 because of those 3 digits.
Answer:
0.6
Step-by-step explanation:
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
The table shows the change in temperature each hour for four hours. Find the total change C in temperature.
Change in Temperature
7 A.M. - 8 A.M. −3°F
8 A.M. - 9 A.M. −1°F
9 A.M. - 10 A.M. +2°F
10 A.M. - 11 A.M. +8°F
Answer:
6
Step-by-step explanation:
-3 -1 +2 +8 = -4+10 = 6
help me find the answer and please TO SHOW ALL WORK
tysm!!!
Step-by-step explanation:
Let x, and x+1 be the consecutive numbers.
[tex]x + (x + 1) = 37[/tex]
[tex]2x + 1 = 37[/tex]
[tex]2x = 36[/tex]
[tex]x = 18[/tex]
Plug in 18 for x+1,
[tex]18 + 1 = 19[/tex]
So the numbers is 18,19
Answer:
18 and 19
Step-by-step explanation:
if you have two consecutive numbers, then using algebra, one unknown number is x and the other unknown consecutive number is x + 1
The equation x + x + 1 = 37
To solve this equation subtract 1 from both sides as one does in algebra.
x + x + 1 = 37 → x + x + 1 - 1 = 37 - 1
Now you have the equation x + x = 36
This can rewrite this as 2x = 36 2x means 2 times the value of x
To solve this part of the equation divide both sides by 2
2x / 2 = 36 / 2
x = 18
The next consecutive number x + 1 = 19, (18) + 1 = 19
check this by adding. 18 + 19 = 37.
WHAT IS THE TRUE STATMENTS
Answer:
number 3
Step-by-step explanation:
A teacher would like to estimate the percentage of her students who play chess.
Which method should the teacher use to select the sample?
A. select all students who are currently in the chess club
B. use a computer to randomly select 30 student IDs from all her students
C. use a computer to randomly select 30 student IDs from all students
D. select every other student in her classes until she has selected a total of 30 students
Answer:
D
Step-by-step explanation:
because it's normal reasonal if it is wrong i will look for a better answer
Answer:
A. select all students who are currently in the chess club
Step-by-step explanation:
If the teacher randomly selects students, there is a greater chance that many don't play chess. But, if the teacher selects all the students who are currently in the chess club, most likely all of them play chess because they are in the chess club.
The diagram below shows a solid consisting
of a cone and a cylinder with a common
base. Find the
(a) volume of the solid,
(b) total surface area of the solid.
(Leave your answer in terms of TT
Answer:
A.) 15984.42cm^2/5088πcm^3
B.) 3466.56cm^2/1104πcm^2
Step-by-step explanation:
A.) fine the V of the cone and then cylinder then add them.
B.) The cone you have to find the LA (lateral area) to do that you would do is find S (slant) so you would do 12^2+16^2 which is 400 then u have to find the square root of it which is 20 which is that slant of the cone. After that you would do 12x20 which gives 240 that would be the LA of the cone.
Then you would find the LA of the cylinder which you have to do is 30x12 which is 360 then multiply it by 2 which gives 720.
Lastly you find the area of the base which in this case is a circle and that would be 144 add all of them then get the SA
Which is the answer A- D ?
Answer:
B.Step-by-step explanation:
Inequality:
-3b - 15 > -24The dot must start at -3 (-3b).
Which would be B.
Then, we solve this inequality:
-3b - 15.Solve:
-3b - 15= 18b18b > -24.Hence, the answer is B.Six less than two times a number is no more than 17.
This is for math I failed a math unit test it was 100 points I’m not the best at every subject even though I get A’s normally from my own work. But I really need help with this I have this question I need to do so I can try to get my grade up just a little bit before tomorrow because they take my device away at school and I don’t have time to do it later.
Thank you!
Also I need the
Write an inequality for each phrase.
a rectangular prisim measures 6m long and 3m wide. if the volume of the prisim is 162 m3 what is the hight of the prisim in meters? show your work
Answer:
the hieght is 9
Step-by-step explanation:
divide 162 by 6 and you should get 27 then divide 27 by 3
to check your answer multiply 9x6x3 and you are done!!!
Match each set of equations with the move that turned the first equation into the second.