Answer:
Answer: These techniques for elimination are preferred for 3rd order systems and higher. They use "Row-Reduction" techniques/pivoting and many subtle math tricks to reduce a matrix to either a solvable form or perhaps provide an inverse of a matrix (A-1)of linear equation AX=b. Solving systems of linear equations (n>2) by elimination is a topic unto itself and is the preferred method. As the system of equations increases, the "condition" of a matrix becomes extremely important. Some of this may sound completely alien to you. Don't worry about these topics until Linear Algebra when systems of linear equations (Rank 'n') become larger than 2.
Step-by-step explanation:
Example:
4X + 5Y = 9
5X - 4Y = 1
Write an inequality for the expression fourteen more than a number is at least 9.
Answer:
14+x[tex]\geq[/tex]9
Step-by-step explanation:
please help I have to turn this in by the end of the night
Answer:
3 subtracted from the product of 7 and a number b
3 subtracted= -3
product of 7 and a number b= 7b
put those together:
7b-3
hope this helps, also what grade is this
Althea has 100 trading cards and Marlon has 20. Every day Althea gives Marlon one card. Use the equations "c=100-d" and "c=20+d" to model this situation. Solve the system by substitution. Explain what the solution means in this situation.
Answer: 5
Step-by-step explanation: 100/20=5
Estimate the difference. 9 1/2 - 1 6/7
8 1/2
8
7
7 1/2
Help me in confused and this thing has 40 QUESTIONS >:( WHYYYYYYYYYYYYYYYYYYYY
Answer:
15
Step-by-step explanation:
Base=bottom
height=vertical
Identify which equations have one solution, infinitely many solutions, or no solution.
Answer:
I think it is
A:One solution
B:Infinitely many solutions
C:One solution
D:Infinitely many solutions
E:One solution
F:One solution
Step-by-step explanation:
I did most of my calculations are on paper
Andrew plays on a basketball team. In two games he scored 2/5 of the total number of points his team scored. His team scored 55 points in the first game and 35 points in the second game. What was the number of points Andrew scored in these two games?
18
20
36
90
Answer:
36
Step-by-step explanation:
First we need the total number of points scored.
55+35= 90
Then we need to figure out how many points Andrew had.
2/5 of 90 points.
2/5 is .4 or 40%
So we multiply
90(.4) = 36
I need help :) please and thank u if u get it right i will give u brainlist
Answer:
4 14/25
Step-by-step explanation:
4.56 = 4 56/100 = 4 14/25
[tex]4 \frac{56}{100} [/tex]
[tex]4 \frac{14}{25} [/tex]
EXPERT HELP I'LL GIVE BRAINLIEST:
Answer:
846 just follow the net. You had the right answer.
Step-by-step explanation:
Twenty-four divided by the difference between 1 1/4 and 3/4
Answer:
48
Step-by-step explanation:
1 1/4-3/4= 1/2
24/1/2
= 48
Follow directions please. Do your best. You don't need to explain. I am not doing BRAINLIEST anymore. It causes too many problems. I don't like arguing so that is why. If you have any questions or just want to talk and be friends type in my question box please.
Answer: 760267200
Step-by-step explanation:
PLZZ HELP ANSWER THIS
WHAT IS 2+2+4+5+932
Answer:
945
Step-by-step explanation:
Answer:
945
Step-by-step explanation:
suppose that rectangle ABCD is dilated to A'B'C'D' by a scale factor of 1/3 with a center dilation at the origin. what is the distance from the center of dilation to the midpoint of A'B'?
A) 1 unit
B) 2 units
C) 3 units
D) 5 units
Answer:
3.
Step-by-step explanation:
3 units
What does theme add to a story? *
( A) A sense of location.
(B ) Motivation for the characters.
(C) Dialogue for the characters.
(D )An important message.
Hey guys can ya help me with this one?
Answer:
Step-by-step explanation:
35
Solve for Variable: 3x + 7 < 16
A. x > 3
B. x < 5
C. x > 6
D. x < 3
Answer:
D. x < 3
Step-by-step explanation:
3x + 7 < 16
To solve, we have to isolate x.
3x + 7 < 16
Subtract 7 from both sides :
3x < 9
Divide 3 from both sides :
x < 3
Now in some cases, you could say that the inequality sign would switch, but this is only when you divide by a negative sign, so keep that in mind.
My rule is: take a number, add 15, and then subtract 9. Write down the rule.
Enrique predicted his car payment to be $200 each month. His actual car payment is $225 each month. What is Enrique's percent error
PLEASE SHOW WORK
Answer:
12.5%
Step-by-step explanation:
SMART PPL PLEASE HELP!!!
Answer:
(n+m)6
6(m+n
Step-by-step explanation:
Parentheses you start with. Then multiply by 6. When there is nothing in between them, that means multiply. And this goes with the communitive property so either way its put or reversed it still equal the same thing.
Have a great day!
Answer:
I believe it's the 4th one
Step-by-step explanation:
Area is multiplying
HELP ASAP!! (Zoomed in version of section 5,6,7)
On a standard coordinate
plane, a point is located
to the left of the
origin on the x-axis.
Select ALL coordinates
that could be the
coordinates of the point.
a
(0, -5)
b
(6, 0)
c
(-9, 0)
d
(-1, -1)
e
(-2, 0)
f
(1, 0)
Examine the linear graph. Determine the y-intercept and write the y-intercept in coordinate form. Then write the equation of the line in slope-intercept form.
Answer:
y-intercept: 100 (0, 100)
[tex]y=\frac{8}{7}x+100[/tex]
Step-by-step explanation:
The y-intercept is the point on a graph that crosses the y-axis, this line crosses the y-axis at 100.
slope-intercept form is: [tex]y=mx+b[/tex]
[tex]m=slope[/tex]
[tex]b=y-intercept[/tex]
This line has a slope of 8/7 and the y-intercept is 100 so the equation would be: [tex]y=\frac{8}{7}x+100[/tex]
y=8/3x+100 is the equation of the line in slope-intercept form.
What is Slope of Line?The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.
The slope intercept form of a line is y=mx+b, where m is slope and b is the y intercept.
The slope of line passing through two points (x₁, y₁) and (x₂, y₂) is
m=y₂-y₁/x₂-x₁
From the given graph let us consider two points through which the line is passing.
(0, 100) and (42, 148)
Slope=148-100/42
=48/42=8/3
Now let us find the y intercept
100=8/3(0)+b
b=100
So slope intercept form is y=8/3x+100
Hence, y=8/3x+100 is the equation of the line in slope-intercept form.
To learn more on slope intercept form click:
https://brainly.com/question/9682526
#SPJ2
Jenny has some tiles in a bag. The tiles are of three different colors: purple, pink, and orange. Jenny randomly pulls a tile out of the bag, records the color, and replaces the tile in the bag. She does this 50 times. The results are recorded in the given table.
Color of Tile Purple Pink Orange
Number of times the tile is drawn 4 24 22
What is the experimental probability that Jenny will pull out a purple tile? (1 point)
Group of answer choices
4 over 50
4 over 46
24 over 50
24 over 46
Answer:
4 over 50
Step-by-step explanation:
4+24+20=50
and= 4/50
Please can you give me the answer to these questions! I need this by today!
Answer:
a) 7
b) 6
c) 5.2
d) 7
Step-by-step explanation:
How to find mode:
To find mode what you do is find the number that is the most common in the number group. In this case, there was one 3, three 7's, one 2, one 4, one 5, one 1, and two 8's. And since there was the highest amount of 7's, 7 was the mode.
How to find median:
To find the median, you line the numbers up from smallest to greatest and find the middle number, since this was a even number, there were two center numbers which were 5 and 7, after finding those, you add 5 and 7 together and divide that by two. So the equation would be (5+7)÷2=6
How to find mean:
To find the mean, you add all of the numbers together then divide it by the amount of numbers there are. The equation would be: (3+7+2+4+7+5+7+1+8+8)÷10=5.2
How to find range:
To find the range you do the largest number minus the smallest number. In this case it would be 8-1=7.
At each scooter's top speed, Brand A scooter goes 2 miles per hour faster than Brand B. If after traveling at its top speed for 3 hours, Brand A scooter traveled 40.2 miles, at what rate did Brand B scooter travel if it traveled the same distance as Brand A? Write an equation to determine the solution and then write an equivalent equation using only integers.
Write an equation to determine the solution.
Answer:
Step-by-step explanation:
40.2=3(x+2)
134=10x+20
134-20=10x+20-20
114=10x
11.4=x
A long-distance telephone company charges $4.95 per month and $0.07 per minute for phone calls.
What is the independent variable quantity in this situation?
Y = $0.07x+$4.95
Also, is that an umbrella academy pfp?
Mitchell cycled a total of 4 kilometers by making 2 trips to work. After 4 trips to work, how many kilometers will Mitchell have cycled in total? Assume the relationship is directly proportional.
Answer:
8 kilometers.
Each trip he bikes 2 kilometers, if he makes 4 trips that's 4 x 2 which is 8
PLS HELPPPP The question is down below.
Answer:
I think it's C
Step-by-step explanation:
Answer: c. The price of 6 tickets is 30$, which is $5.00 per ticket
Fill in the blank
A(n) ________ can be either addition, subtraction, division, or multiplication.
Answer:
Operation is your answer hope this helps
Step-by-step explanation:
Answer:
An operation can be addition, subtraction, division, and/or multiplication
Step-by-step explanation:
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Answer:
But Why
Step-by-step explanation: