Answers
Answer:
A
Step-by-step explanation:
This explanation mostly depends on what you're learning right now. The first way would be to convert this matrix to a system of equations like this.
g + t + k = 90
g + 2t - k = 55
-g - t + 3k = 30
Then you solve using normal methods of substitution or elimination. It seems to me that elimination is the quickest method.
g + t + k = 90
-g - t + 3k = 30
____________
0 + 0 + 4k = 120
4k = 120
k = 30
No you can plug this into the first two equations
g + t + (30) = 90
g + t = 60
and
g + 2t - (30) = 55
g + 2t = 85
now use elimination again by multiplying the first equation by -1
g + 2t = 85
-g - t = -60
_________
0 + t = 25
t = 25
Now plug those both back into one of the equations. I'll just do the first one.
g + (25) + (30) = 90
g = 35
Therefore, we know that Ted spent the least amount of time on the computer.
The second method is using matrix reduction and getting the matrix in the row echelon form, therefore solving using the gauss jordan method. If you would like me to go through this instead, please leave a comment.
Related Questions
What is 1/6 divided by 1/3 in simplest form
Answers
Answer:
1/2 or 0.5
Step-by-step explanation:
Answer:
1/18
Step-by-step explanation:
1/6÷1/3
1/3×1/6
1/3×6
1/18
40 POINTS !! 40 POINTS !!
PLEASE HELP , DONT SKIP !
NO LINKS OR FILES.
Answers
I believe it's 4 as 32 fluid ounces is 1 quart
Answer:
ok so you said 40 points but theres only 5 points....xD anyways,
we know that 4 would be as 32 fluid ounces.
that would equal 1 quart.
hope this helps! best of luck!!!!
Someone please helppppp
Answers
Answer:
the correct answer is b) 4
What is the inverse of y=2x^2-8
Answers
Answer:
f − 1 ( x ) = √ 2 ( x + 8 ) /2 , − √ 2 ( x + 8 ) /2
keep it under whole root
Step-by-step explanation:
The list below shows the different choices of pizza at the local pizza shop: Pepperoni: 11 Supreme: 7 Cheese: 6 Hawaiian: 3 Based on these results, what is the theoretical probability of choosing a Hawaiian Pizza?
Answers
Step-by-step explanation:
11 + 7 + 6 + 3 = 27
total amount of pizza = 27
Hawaiian pizza = 3
3/27 = 1/9
fill in the blanks
[tex] {(x + 3)}^{2} - x - 3 = (x + 3) \times ............[/tex]
please answer my question I will mark you as brainliest and I will follow you
Answers
Answer:
Step-by-step explanation:
(x + 3)² - x - 3 = (x +3 )² - (x + 3)
= (x +3)(x + 3) - (x + 3)*1
= (x + 3) [ x + 3 - 1]
= (x + 3 (x + 2)
What is 1/6 as a percent.
Answers
Answer:
16.66 %
Step-by-step explanation:
1 / 6 as a percent
= ( 1 / 6 ) x 100
= 100 / 6
= 16.66 %
Kei buys a table and 12 chairs. Each chair cost the same price. The table cost $165. The total cost for the table and 12 chairs is $ 465. What is the cost of one chair?
Answers
Answer:
[tex]165 + 12c = 465[/tex]
Is the right answer
Answer:$25 per chair
Step-by-step explanation:
It’s $165 for only the table. Minus that from the $465 and you get $300. Do $300 divided by 12(amount of chairs) And you get $25. It’s $25 per 1 chair.
Determine whether each equation is true or false.
Answers
Answer:
1. False
2. True
3. False
Each month, 8 magazines arrive at Sydney's home. Write an equation that would show the number of motnths (n) it took for Sydney to receive 56 magazines.
btw this is multiple choice so this is the choices
A. 56n=8
B.n+8=56
C.8n=56
D.56-n=8
help me asap
Answers
Since 8 magazines are areiving each month (n) and the total is 56, all you have to do is multiply 8 by n and you get 56, the actual answer would be 7 though.
Answer:
C.8n=56
Step-by-step explanation:
x^2 =1 how many solutions are there
Answers
Answer:
Answer:
x=1 or x=−1
Step-by-step explanation:
I think just 2
Answer:
x=1, x=-1
Step-by-step explanation:
x^2=1
x=sqrt(1)=+-1
Thus, there are 2 solutions: 1 and -1
and Mandy takes 3.9 percent of jimmy chocolate jimmy has 5000 pieces of chocolate chocolate how much does jimmy have left
Answers
Answer:
Jimmy has 4805 left
Step-by-step explanation:
3.9% = 0.039
5000(0.039) = 195
Mandy took 195 pieces
5000 - 195 = 4805
Jimmy has 4805 left
SUPER EASY QUESTION WILL GIVE BRAINLEST!!!!!!!!!!!!!!!!!!!!!
what is 11683.94 rounded to the nearest tenth.
Answers
Answer: It's 11683.9
Step-by-step explanation:
1) Which number line below
shows x 4?
a)
1 2 3 4 5 6
b)
0 1 2 3 4 5 6
C)26
O i 2 3 4
D)5
0 1 2
3 4 5
6
A
B
оооо
С
D
Answers
Help ASAP please!!!!!!!!!!!
Answers
Answer:
im not sure but i think it is A...
A triangular prism with dimensions is shown below.
5 ft
3 ft
8 ft
What is the volume of the triangular prism in cubic feet?
O A. 120 ft
O B. 20 ft
O C. 40 ft?
O D. 60 ft
Answers
The diagonals of rhombus MATH intersect at P(4,-5). If the equation of the line that
contains diagonal MT is y = -2x + 3, what is the equation of a line that contains
diagonal AH?
y = 1/2x +5
y = -1/2x-7
y = -2x + 5
y= 1/2x - 7
Answers
Answer:
D. y = 1/2x - 7Step-by-step explanation:
The diagonals of a rhombus are perpendicular:
MT ⊥ AHWe have the equation for MT:
y = -2x + 3Perpendicular lines have negative-reciprocal diagonals, therefore AH has slope of 1/2.
Since AH passes through point (4, -5), the equation of the line is:
y - (-5) = 1/2(x - 4)y = 1/2x - 2 - 5y = 1/2x - 7Correct choice is D
Find the equivalent equation
1. 4+ 4w
2 18w+9
3. 18+6x
4. 21x+42
5. 25x+45
Answers
Answer:
see below
Step-by-step explanation:
1. 4 + 4w
Take out a 4 from each term.4(1 + w)2. 18w + 9
Take out a 9 from each term.9(2w + 1)3. 18 + 6x
Take out a 6 from each term.6(3 + x)4. 21x + 42
Take out a 21 from each term.21(x + 2)5. 25x + 45
Take out a 5 from each term.5(5x + 9)Hope this helps!
I need help with these questions ?
Answers
6. Neither likely or unlikely since it is close to 50%
Answer:
5. Every 25th student who enters the school than morning
6. It is neither likely or unlikely that it will rain tomorrow
Step-by-step explanation:
5. A random systematic sample of every 25th student will present the least bias
6. 0.48 is close to 0.5, which means there is almost an even chance that it will or will not rain
i'll give brainliest
reflect (-4,4) in the x-axis
Answers
Answer:
(-4,-4)
Step-by-step explanation:
Anytime you reflect a coordinate point across the x-axis, the y-coordinate becomes its opposite and the x-coordinate stays the same.
In this coordinate: (-4,4)
Reflecting (-4,4) across the x-axis means the x-coordinate (-4) would stay the same and the y-coordinate (4) would become its opposite (-4).
The new coordinates after being reflected across the x-axis are (-4,-4).
Find the distance between the points ( – 4,10) and (8,10).
Answers
Answer:
12 units
Step-by-step explanation:
(-4 , 10) ; [tex]x_{1} = -4[/tex] and [tex]y_{1} = 10[/tex]
(8 ,10) ; [tex]x_{2} = 8[/tex] and [tex]y_{2}= 10[/tex]
Distance = [tex]\sqrt{(x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2}}[/tex]
[tex]= \sqrt{(8-[-4])^{2}+(10-10)^{2}}\\\\=\sqrt{(8+4)^{2}+0}\\\\= \sqrt{12^{2}}\\\\= 12 units[/tex]
Please help this is geometry :)
Answers
Salaries for teachers in a particular elementary school district are normally distributed with a mean of $49,000 and a standard deviation of $4,500. We randomly survey ten teachers from that district. (Round your answers to the nearest dollar.)
(a) Find the 90th percentile for an individual teacher's salary.
$
(b) Find the 90th percentile for the average teacher's salary.
Answers
Answer:
they get a lot of moohlah
Step-by-step explanation:
PLEASE HELP ME MARKING PEOPLE AS BRAINLIST
Answers
Answer:
A
Step-by-step explanation:
what is the value when x = 2?
i need this asap!
Answers
Answer:
y=6!
Step-by-step explanation:
you can easily see it on the graph. on the x axis, 2 is equivalent to 6
Answer:
When x is 2 y equals 6.
Step-by-step explanation:
You go right on the graph two units then go up the y axis till the line intersects the lines. In this case the graphed point is (2,6)
2(x+1)=3x+5. solve for x
Answers
Answer:
x = -3
Step-by-step explanation:
I would appreciate if someone could help me with this problem and answer it I will give you a brainlist :)
Answers
What is the domain of the function
Answers
Answer:
Domain- (-∞,∞), {x/x ∈ R}
Step-by-step explanation:
What is the unit multipliers for seconds and minutes
Answers
Answer:
60 seconds? 1 minute?
Step-by-step explanation:
Answer:
steps below
Step-by-step explanation:
second to minute: 1 min / 60 sec
example: 3600 sec = (3600 sec / 1) * (1 min / 60 sec)
= (3600 * 1 min) / (1 * 60)
= 60 min
minute to sec: 60 sec / 1 min
example: 5 min = (5 min / 1) * (60 sec / 1 min)
= (5 * 60 sec) / (1 * 1)
= 300 sec
VERY EASY, WILL GIVE 50 POINTS FOR CORRECT ANSWER ASAP AND WILL GIVE BRAINLIEST.
Answers
Answer:
B: 2,5
Step-by-step explanation:
Step One: We must assume this is rotating in a clockwise rotation since it is not -90 and there is no mention of it otherwise.
Step Two: To do this problem, you need to know the 90-degree rotation formula: (b, -a). This means that we make the x-coordinate negative and then switch spots with the x and y coordinates.
Step Three: By following this formula, we would make -2 negative, which makes it positive. Currently, the equation is (5, 2). Now, we need to finish the formula by swapping places: (2,5). That is the answer.