Answer:
Remarks:The method used in solving the example above is called the elimination method, because we eliminate one variable first, to get a linear equation in one variable. In the example above, we eliminated y. We could also have eliminated x. Try doing it that way. 2. You could also have used the substitution, or graphical method, to solve this problem. Try doing so, and see which method is more convenient.
steps of elimination method: Step 1:First multiply both the equations by some suitable non-zero constants to make the coefficients of one variable (either x or y) numerically equal. Step 2: Then add or subtract one equation from the other so that one variable gets eliminated. If you get an equation in one variable, go to Step 3. If in
Step 2:we obtain a true statement involving no variable, then the original equations has infinitely many solutions. If in Step 2, we obtain a false statement involving no variable, then the original pair of equations has no solution, i.e., it is inconsistent.
Step 3:Solve the equation in one variable (x or y) so obtained to get its value.
Step 4:Substitute this value of x (or y) either of the original equations to get the value of the other variable.
Step-by-step explanation:
hope it helps you<3Look at the diagram showing intersecting lines below.
Write the measures of the three missing angle measures. You do not need to type the degrees sign in your answer.
Answer:
b is -50 I think that's it
PLEASE HELP!
how is -3x > 15 different than 3x > -15 ?
Answer: Wellll
Step-by-step explanation:
Here, the number that is the x variable is negative. On the other problem, it is not. This is because a negative times a negative = a positive! Good luck!
X + 6x + 8 = 0 b. x2 - 6x + 9 = 0 Points for writing the equations in perfect square form. Points for explaining the solutions.
Need help ASAP! Please
Answer:
112
Step-by-step explanation:
20 x 20 is 40
6 x 9 is 54
6 x 3 is 18
54 + 18 is 72
72 + 40 is 112
Answer:
472
Step-by-step explanation:
Use the order of operations PEMDAS
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction
9 + 3 = 12
20^2 = 400
6 * 12 = 72
400 + 72 = 472
hope this helped! :)
What’s these answers please
can anyone solve this?
Answer:
6 cm
Step-by-step explanation:
This is because the full length of the opposite side is 10 and another side shows 4, 10 - 4 = 6.
please help!!! geometry help needed! the other answer choices are 2x+2y = 166 and 2x + y = 173
Answer:
2x + y = 173
Step-by-step explanation:
sorry I'm asking so many thing but I also need help with this
√145 cm
Step-by-step explanation:
By Pythagoras property
Hypotenuse² = base²+perpendicular ²
(AC)² +(BC)² =(AB)²
9² + 8² = (AB)²
81+64 = (AB)²
145 =(AB)²
AB =√145
Please mark my answer the brainliestWhich of the following can be used to prove that
The perimeter of a square is 92cm. State the length of one of its sides.
Step-by-step explanation:
the length will be 92=4a
92 divided by 4 that is 23
so, the lengths of the four walls of a square or is the length is 23cm
A grocery store received two shipments of watermelon. Each
watermelon in a shipment was weighed, then a line plot was
made of all of the weights in a shipment
Shipment 1
х
x x x
What statement about the two plots' distributions is true?
Choose each correct statement.
15
20
25
Weight (lb)
Shipment 2
The range of weight in shipment 1 is greater than the
range of weight in shipment 2
х
х
15
20
The lightest watermelon in shipment 1 weighs the
same amount as the lightest watermelon in shipment
2.
Weight (lb)
The range of weight in shipment 2 is greater than the
range of weight in shipment 1
The distribution of the data is approximately
symmetrical in both sets of data
Answer:
The degree of overlap between the two distributions is moderate.
Step-by-step explanation:
I got this answer on the test. It is right I promise!
Answer:
The degree of overlap between the two distributions is moderate.
Step-by-step explanation:
i took the test. Also, have a Hamburger while your at it.
PLEASE HELP ME AND I WILL GIVE A BRAINLY I need to find the volume of the cube in the picture
what sum is most likely to occur when the two spins are added together
Answer:
say a song is number 20 on the top of 40 chart right by spins but it's numbered 40 and audience reached Tom continues you probably see
The sum of three consecutive odd numbers is 99. What are those three numbers. Write an equation and show your work
Answer:
31,33,35
Step-by-step explanation:
Let us call our odd integers:
2
n
+
1
2
n
+
3
2
n
+
5
and write our condition as:
(
2
n
+
1
)
+
(
2
n
+
3
)
+
(
2
n
+
5
)
=
99
and solve it for
n
:
6
n
+
9
=
99
6
n
=
90
n
=
90
6
=
15
so our numbers will be:
2
n
+
1
=
31
2
n
+
3
=
33
2
n
+
5
=
35
solve for x: 5x – 2x = 21 simplify your answer as much as possible.
Answer:
x=7
Step-by-step explanation:
5-2 is 3
21 divided by 3 is 7
therefore 7 is x
Answer: 5x = 5 times 5. 2x = 2 times 2
AKA 25-4=21
A researcher performs a study in which he gives testosterone to 100 randomly chosen men and observes that 50% of them report feeling more motivated and invigorated one week later. Can this researcher conclude based on these findings that testosterone increases feelings of motivation and vigor
This researcher cannot conclude based on these findings that testosterone increases feelings of motivation and vigor.
What is Research?Research can be defined as the process of investigating or making findings so as to reach or draw a conclusion based on the findings.
Research can also be defined as the process of collecting data, analyzing and interpreting the data collected in order to reach a conclusion.
Based on the given scenario the researcher cannot conclude that testosterone increases feelings of motivation and vigor based on his finding as their no enough data and evidence to support is findings.
Inconclusion this researcher cannot conclude based on these findings that testosterone increases feelings of motivation and vigor.
Learn more about research here:https://brainly.com/question/968894
Solve the Indices finding the value of x and y 7^2y×3^x=63.
Answer:
y = 1/2
x = 2
Step-by-step explanation:
7^2y × 3^x = 7 × 9
7^2y × 3^x = 7^1 × 3²
7^2y = 7^1 so y = 1/2
3^x = 3² so x = 2
How does temperature affect the amount of water observed on the outside of the glass?
Question
Find the perimeter and the area of the polygon with the given vertices.
N (0,2), P (5,2), Q (5,5), R (0,5)
Answer:
16=perimeter, 15=area
Step-by-step explanation:
First we have to plot the diagram.
The distance of squares away of N to P is 5.
The distance of square away of R to N is 3.
5*2+3*2=10+6=16
16 is the perimeter.
3*5=15
15 is the area
The following dot plots show the high temperatures, in degrees
Fahrenheit, of two cities during the previous 10 days.
Kingman
Barstow
70 71 72 73 74 75 76 77 78 79 80
Temperature (°F)
60 62 64 66 68 70 72 74 76 78 80
Temperature (°F)
a.
Compare the IQR of the two cities.
b.
What might you conclude about the
weather in these cities based on
the IQR?
A. The high temperature in
Barstow is more consistent
than the high temperature in
Kingman
B. The high temperature in
Kingman more consistent
than the high temperature in
Barstow,
C. The high temperatures in
Kingman and Barstow show
similar variability.
D. The cities of Kingman and
Barstow are likely in different
states
Answer:
The answer is A!
Step-by-step explanation:
Just by looking at the data, you can see the higher temps in Barstow are more consistent than that of those in Kingman.
Help please fast I will give brainliest and points
If the equal is 55x + 35y = 200
x: time driven at 55 miles/houry: time driven at 35 miles/hourIf the car spends 3 hours at 55 miles per hour, then it drove:
55(3) + 35y = 200
35y =35
y = 1.
There the drive spent 1-hour driving at 35 mph.
Hope it helps!
What is the surface area of this rectangular prism?
Answer:
2,700
Step-by-step explanation:
A=2(wl+hl+hw)=2·(20·30+15·30+15·20)=2700
A recipe requires
cup of milk for each à cup of water. How many cups of water are
needed for each cup of milk?
Step-by-step explanation:
Let's set up an algebraic equation to reflect the ratio of milk to water. We know that for every 1/3 cup of milk, we have 1/4 cup of water, so we can take:
1/3*m=1/4*w
How might we make that 1/3 cup into 1 cup of milk? We multiply by 3! What we do to one side we have to do to the other otherwise we change the equation (and break math), so we will multiply both sides by 3.
(1*3)/3*m=(1*3)/4*w
3/3*m=3/4*w
m=3/4w
A teacher purchases award prizes for the
24
students in a class. Each student receives one prize. The teacher buys spinners that cost
$
1.25
each and cubes that cost
$
0.75
each for a total of
$
25
. The system of equations represents the situation, where
x
represents the number of spinners and
y
represents the number of cubes.
The system of equations represents the situation is x + y = 24 and 1.25x + 0.75y = 25
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
Let x represents the number of spinners and y represents the number of cubes.
There are 24 students in the class and the teacher spent a total of $25, hence:
x + y = 24 (1)
and;
1.25x + 0.75y = 25 (2)
The system of equations represents the situation is x + y = 24 and 1.25x + 0.75y = 25
Find out more on equation at: https://brainly.com/question/2972832
Find the equation of a line that passes through the point (3,4) and has a gradient of 13. Leave your answer in the form y=mx+c
Answer:
[tex]y=13x-35[/tex]
Step-by-step explanation:
Use the point-gradient form of a linear equation: [tex]y-y_1=m(x-x_1)[/tex]
(where [tex]m[/tex] is the gradient and [tex](x_1,y_1)[/tex] is a point on the line)
Given:
[tex]m = 13[/tex][tex](x_1,y_1)=(3,4)[/tex][tex]\implies y-y_1=m(x-x_1)[/tex]
[tex]\implies y-4=13(x-3)[/tex]
[tex]\implies y-4=13x-39[/tex]
[tex]\implies y=13x-35[/tex]
Answer:
[tex]y=13x-35[/tex]
Step-by-step explanation:
[tex]m=13[/tex]
[tex](x_{1},y_{1})=(3,4)[/tex]
[tex]y-y1=m(x-x1)[/tex]
[tex]y-4=13(x-3)[/tex]
[tex]y-4=13x-39[/tex]
[tex]y=13x-35[/tex]
Matthew had to make a bridge for his math class. It had to be at least 1 1/2 feet long. Harold made a bridge that was 2 1/3 times as long as Matthew’s. What equation would you use to find out how long Harold’s bridge is?
Help or sad :(
-Hii!-
See below :)
Known:
2 and 1/3 has longneeds to be 1 2/2Lets re-read the text. We need to find key words to see what we need to solve.. Words such has "It had to be at least 1 1/2 feet long. Harold made a bridge that was 2 1/3 times as long as Matthew’s. " Tells us its a subtraction problem.
Lets do the math :)↓↓↓
[tex]\\ \\ \\ \\[/tex]1 and 1/3 minus 2 and 1/3 is 5/6Hope this helps :D
Give brainliest
-∞Natalia∞-
Answer: 1 1/2 x 2 1/32
Step-by-step explanation: The word Times tells us that it is multiplication
PLEASE ANSWER QUICKLY! WILL GIVE BRAINIEST! ONE QUESTION! ANSWER CORRECTLY TYSM! <333
Answer:
B
Step-by-step explanation:
All real numbers
Let me know if this helped <3
HELP!!!! HELP!!! HELP!!!
Simple Intrest...!
Answer:
67796.61
Step-by-step explanation:
Answer the following questions
Answer:
14
56
52
hope this helps :)
4. Let g be the function that satisfies g(0)=0 and whose derivative satisfies g′(x)=2|x|
The solution to the differential equation is:
[tex]g(x) = x^2*sgn(x)[/tex]
How to solve the differential equation?
We want to solve:
g'(x) = 2*|x|
If we integrate g(x), we will get:
[tex]\int\limits {2*|x|} \, dx[/tex]
Remember that:
|x| = x if x > 0|x| = -x if x < 0.Then:
[tex]g(x) = \int\limits {2*|x|} \, dx = 2*(\frac{x^2}{2}*sgn(x)) + C[/tex]
Where sgn(x) is the sign of the value x, and C is a constant of integration.
We also know that g(0) = 0, then:
[tex]g(0) = 2*(\frac{0^2}{2}*sgn(0)) + C = C = 0[/tex]
So we conclude that C = 0.
Then the function is:
[tex]g(x) = x^2*sgn(x)[/tex]
If you want to learn more about differential equations, you can read:
https://brainly.com/question/18760518