Answers
Answer:
7x - 8y = -23
Slope = 1.750/2.000 = 0.875
x - intercept = -23/7 = 3.28571
y - intercept = 23/8 = 2.87500
7x - 7y = -14
Slope = 1
x - intercept = -2/1 = -2.00000
y - intercept = 2/1 = 2.00000
Related Questions
A denotes an mn matrix. Determine whether the statement is true or false. Justify your answer. The row space of AT is the same as the column space of A.
Answers
Answer: true
Step-by-step explanation:
For an m*n matrix, the column space of A will be a space formed by the lineal combination of all the columns of A.
column space = a1*c1 + a2*c2 + ...
where a1, a2, ... are scalars, and c1 is the vector of column 1.
Then we should write:
Column space = a1*(A₁₁, A₂₁, A₃₁, ...) + a2*(A₁₂, A₂₂, A₃₂, ...) + ...
Now, the transpose is defined as:
[At]₁₃ = A₃₁
Here i used the element with subindex 3 and 1, but is the same for every subindex.
Notice that if A is m*n, then [At] is n*m
Now, the row space of [At] will be, same as before.
Row space = b1*r1 + b2*r2 + ...
Where b1, b2, ... are scalars and the r's are the vector of each row.
= b1*( [At]₁₁ , [At]₁₂, [At]₁₃, ...) + b2*([At]₂₁, [At]₂₂, [At]₂₃, ...) + ...
Now we replace each term of the transpose by the associated element in the original matrix.
= b1*( A₁₁, A₂₁, A₃₁, ...) + b2*(A₂₁, A₂₂, ...) + ....
If we take:
b1 = a1, b2 = a2, b3 = a3, ...
We will have that the row space of [At] is the same as the column space of A.
a family rents a cottage for $79.95 a day for 7 days. about how much does the family pay for the cottage?
Answers
Hope this helped <3
Answer:
$560
Step-by-step explanation:
Since the family rents a cottage for 7 days, 79.95 dollars each day, we multiply 79.95 by 7 and get 559.65. Since the question asks about how much does the family pay, we round 559.65 to get $560.
A rectangular yard has a width that is 10 feet longer than the width . If the the area of the yard is 600 squared feet , find the dimension of the yard
Answers
Answer:
length = 30 feet and width = 20 feet
Step-by-step explanation:
Let l is length and b is width of a rectangular yard. The area of a rectangle is given by :
A = lb ..(1)
A rectangular yard has a length that is 10 feet longer than the width.
length, l = 10+b ...(2)
ATQ,
Put the value of l in equation (1),
[tex](10+b)b=600\\\\10b+b^2=600\\\\b^2+10b-600=0\\\\b^2+30b-20b-600=0\\\\b(b+30)-20(b+30)=0\\\\(b+30)(b-20)=0\\\\b=-30\ \text{feet}\ \text{and}\ b=20\ \text{feet}[/tex]
Width can't be negative. The width is 20 feet.
Put the value of b is equation (2),
l = 10+20
l = 30 feet
Hence, the length and width are 30 feet and 20 feet.
What is the best estimate of 157 divided by 2=
What is the best estimate of 108 divided by 5=
Answers
Answer:
157 divided by 2 is 78.5 round that to get 70
108 divided by 5 is 21.6 round that to get 22
GIVING BRAINLIEST IF CORRECT PLEASE HELP ASA[P
Answers
Answer:
Step-by-step explanation:
1: Green because it has more sections than the other colors
2: 4/8
Hope this helps!
Answer:
A) green
B) 4/8
brainliest please
The function y=15x + 100 models the freight shipping charge of x pounds of cargo. What best describes the constant term of the function
Answers
Answer:
the constant is 15
Step-by-step explanation:
because it is constantly going up. the slope (15x) is what changes.
a ____ is the total number of possible equal parts in a fraction
1. numerator
2. inverse operations
3. reciprocal
4. fraction
5. denominator
6. mixed number
Answers
Answer: The answer is 5. The denominator.
Step-by-step explanation:
How do break down what is the percentage of change in cost of the pizza
Answers
p – 22 < 40 . could you give me the answer and the steps thank you!
Answers
Answer:
the answer is 62
Step-by-step explanation:
ok so all you do is add 22 instead of subtracting 22
Select each situation that can represent a proportional relationship
The price of buying x gallons of gas at $3 a gallon.
The total amount of weight a kitten gains in w weeks when it gains 4 ounces per week and started at a weight of 6 ounces.
The price of renting a scooter for m miles when it costs $0.75 per mile plus a base fee of $2.50.
The total amount of money a child earns from doing chores when she earns $10 a week for w weeks.
Plz help!
Answers
Answer:
The 1st one and the last one
Step-by-step explanation:
1) The membership fee of Math Club is P25. What is the total amount
paid by 1,252 members?
A. P 31,250
B. P 31,252
C. P 31,230
Answers
Answer:
it's actually none of those the answer I have is p 31,300
whatis the reciprocal of the number. 7/8
Answers
Answer:
8/7
Step-by-step explanation:
reciprocal is just the same number flipped
Answer:
8/7
Step-by-step explanation:
The reciprocal of a fraction is what you multiply with that fraction to get 1. Essentially, you flip the original fraction. The reciprocal of 7/8 is just flipping that to get 8/7. To check, 7/8 * 8/7 = 56/56 = 1
It’s it A B C D please answer
Answers
Answer:
It is B. I hope this helps.
Step-by-step explanation:
Please help me fast!!!!!
Answers
Answer:
75
Step-by-step explanation:
If both factors are negative then the product is positive.
Answer: -75
Step-by-step explanation: 15 times 5 equals 75
The expression factors as: (n4 + 3)(n4 + 3)
(n4 - 3)(n4 + 3)
(n4 – 3)(n4 – 3)
Answers
Answer:
(n 4)
Step-by-step explanation:
Answer:
B - the second one (on EDGE)
Step-by-step :
1) Is the solution to -2.7 + x= -3.5 positive or
negative.
Answers
Answer:
positive because two negatives make a positive and the answer is not positive.
The solution of the expression -2.7 + x =-3.5 is -0.8 and is negative.
What is an expression?The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given expression is -2.7 + x= -3.5. The value of x will be calculated as,
-2.7 + x =-3.5
x = -3.5 + 2.7
x = -0.8
Therefore, the solution of the expression -2.7 + x =-3.5 is -0.8 and is negative.
To know more about an expression follow
https://brainly.com/question/25968875
#SPJ2
If the simple interest on $3000 for 3 years is $720 , then what is the interest rate?
Answers
Answer:
8%
Step-by-step explanation:
Starting Principal: $
3,000.00
Years:
3
Annual Interest Rate:
8
%
Results
Future Value, using...
Simple Interest: $
3,720.00
Annually Compounded Interest: $
3,779.14
Two forces are acting on an object, one at 58 Newton's and the other at 83 Newton's.
The resulting force is 105 Newton's. What is the angle between the resulting force and
the larger of the two original forces?
Answers
Can someone help me plz
Answers
Answer:
blahhfhdhdhhshshhdhdhdhdhdhshhshhshshdh
What is the solution to this equation?
3x-9 = 12
O A. x = 1
B. x = 7
O c. x = 9
O D. x = 63
Answers
point A is located in which quadrant 1 2 3 or 4
Answers
Answer:
I THINK 2
Step-by-step explanation:
Answer: (-3, 5) : Quadrant 2
The chart below contains the results of a survey in which students were asked about their cell phone plan.
Cell Phones Plans
Plan
Students
No cell phone
20
Voice only
14
Voice and texting
12
Voice, texting, and data
4
What percent of the students surveyed have a phone plan with texting?
16%
24%
32%
68%
If you get it right you get the crown brain thing
Answers
Answer:
It is option C.
Step-by-step explanation:
I did the test.
Answer:
it c
Step-by-step explanation:
i did the unit test hope this helps :)
A 6-kilogram bag of cat food costs $21.54. What is the unit price?
Answers
Answer:0.27855153
A
−
0.04642525
kilograms per dollar
Step-by-step explanation:
Find the solutions to the equation below.
Check all that apply.
6x2 + 7x -5 = 0
A. x = 1/3
B. x = 5
c. x = -5/3
D. x = -1/3
E. x = 1/2
F. x = -2
Answers
Answer:
A and C
Step-by-step explanation:
Move all terms to the left side and set equal to zero. Then set each factor equal to zero
8.
Andrew has $76.50. Elijah has $94.30. How much more money does Elijah have than
Andrew
Answers
Answer:
$17.80Step-by-step explanation:
This is a fairly simple question. All we need to do is find the difference between the two amounts.
$94.30 - $76.50 = $17.80
I WILL MARK BRAINLIST
Question 9
Answers
Answer:
True
Step-by-step explanation:
Does anyone understand this?
Answers
Answer:
no looks confusing
Step-by-step explanation:
Help
Brainliest in reward
Please name both angles
Answers
There are 3,785 milliliters in 1 gallon, and there are 4 quarts in 1 gallon.
How many milliliters are in 3 gallons?
Answers
Answer:11,356
Step-by-step explanation: that is the answer! I’m sure
Answer:11.355
Step-by-step explanation:
2. Determine the scale factor of a drawing if the scale is 1 inch = 4 feet.
Answers
Answer: Therefore the scale factor is 48 times.
Step-by-step explanation: Since the drawing is in inches, the scale will be 1/4
the scale is 1 inch to 4 FEET.
Convert feet to inches
1 inch to 48 inches
So the ratio is 1:48
