Tony started a blanket business. He purchased a sewing machine and some fabric to get started, and then sold each blanket for the same price. The expression −450+12x represents the profit that Tony has earned based on the number of blankets sold.
Which expression represents the total amount Tony earns from selling blankets?
12x
12
−450+12x
x
Solve the following system of linear equation using any algebraic method. If possible, check your solution.
2x-5y=3
X-2y=7
please help!!!! asap
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Anna is 4ft 9in tall. Express Anna's height infeet only by using a mixed number. If necessary, simplify the fravtion part of the mixed number.
12 inches in a foot so 9 inches = 9/12 of a foot
9/12 reduces to 3/4
so 4 ft 9 inches = 4 3/4 feet
Our teacher had1/2 of an eraser left.she gave that to her 2 students equally.how much of the eraser did every student take home
Elizabeth received her last check for the summer job on the 12th and withdrew her car down payment after making another deposit. What is her balance C?
A. $273.50
B. $396.50 (My answer)
C. $285.50
D. $385.50
I added the deposits and then subtracted the withdrawal, is that right?
Answer: Yes, Her balance C=$396.5.
Step-by-step explanation:
From the given table, the balance amount on 2nd September = $920
On 5th September (9/5/06), Elizabeth deposit amount = $65.00
On 12th September (9/12/06), Elizabeth deposit amount = $61.50
Deposit amount till 12th September=[tex]\$65+\$61.5=\$126.50[/tex]
Therefore, the balance amount on 12th September = [tex]\$920+\$126.20=\$1046.20[/tex]
On 12th September , Elizabeth withdrawal amount = $650.00
Therefore, the balance amount = [tex]C=\$1046.20-\$650.0=\$396.5[/tex]
Hence, B is the right answer.
Her balance C=$396.5.
3x+5y=4, 2x-y=-7 solve using substitution
50 students in 4 buses how many in each bus
Wes used 49 quarts of oil when he changed the oil in 7 cars. Complete and solve the proportion to find how many quarts of oin he would use to change the oil in 20 cars, assuming that all cars need to the same quanity of oil.
Write a true conditional statement about yourself. Then write the converse of your statement in if-then form. Is the converse true?
Evaluate u + xy, for u = 18, x = 10 and y = 8
U+xy
Where u=18,x=10,y=8
Sub in all these values
18+10(8)
18+80
98
Hope this helps!
Holly wants to save money for an emergency. Holly invests 1,500 in an account that pays an interest rate of 6.75%. How many years will it take for the account to reach 7300? Round your answer to the nearest hundredth.
Which mathematical term cannot be defined for all cases in a system of geometry?
Answer:
The answers are :
1. parallel lines
2. midpoint of a line segment
Step-by-step explanation:
The mathematical terms that cannot be defined for all cases in a system of geometry are:
1. parallel lines and
2. midpoint of a line segment.
A parallel line cannot be defined as lines do not occupy any space. It is a straight one dimensional figure with no thickness and it extends infinitely in both directions.
The points also do not have any dimension like length, area, volume etc.
The angle between the minute hand and the hour hand of a clock is 90 degrees. What time is it? Justify your answer.
25. Find the measure of an angle that is 10 more than three times its complement. Show all work in order to receive credit.
Fifteen marbles are in a row . 20% are blue.one third are green. Yellow marbles account for 0.2 of the row . The remaining marbles are red. Explain how to find out how many of each color of marbles are in the row
Please,please,please someone answer this!! It's for a math performance task and It's overdue by a couple days so I need to finish it soon!! Please,please,please someone help me!! Worth 50 points PLUS I'll give the person who answers FIRST and BEST the brainlest answer.
Using complete sentences, create your own scenario involving the United States' national debt with any two decades listed in the table. The scenario should include multiplication or division between the numbers in scientific notation. YearUS Nation Debt (in US dollars) 1960 $286,330,760,848.37 1970 $370,918,706,949.93 1980 $907,701,000,000.00 1990 $3,233,313,451,777.25 2000 $5,674,178,209,886.86 2010 $13,561,623,030,891.79
The scenario describes calculating the multiple of growth in the US national debt from 1970 to 1990 using scientific notation, showing that the debt was nearly 9 times larger in 1990 than in 1970
Let's create a scenario involving the United States' national debt from two different decades using multiplication in scientific notation. Imagine the government wanted to compare the debt from 1970 to that of 1990 to analyze the growth. The debt in 1970 was approximately $370.9 billion, and in 1990, about $3,233.3 billion. To find out how many times larger the debt was in 1990 compared to 1970, we'd convert these numbers into scientific notation and divide the 1990 figure by the 1970 figure.
In scientific notation, the 1970 debt is 3.709 x 1011 dollars, and the 1990 debt is 3.2333 x 1012 dollars. To perform the division, we have (3.2333 x 1012) / (3.709 x 1011) which gives us approximately 8.71. This means the national debt in 1990 was nearly 9 times larger than it was in 1970
The force of gravity is less on Mars than it is on Earth. As a result, the weight of an object on Mars m is 40% of its weight on Earth w. Determine which function you would use to find the weight on Mars of a space probe that weighs 15 lb on Earth. Then find the objects weight on Mars.
What is the rate at which work is done on the refrigerator? carnot?
The rate at which work is done on the refrigerator and Carnot refrigerator depends on the cooling effect desired and the efficiency of the refrigerator.
For a refrigerator,
The coefficient of performance is Qc / W
For a Carnot refrigerator,
The coefficient of performance is Tc / (Th - Tc).
We have,
The rate at which work is done on the refrigerator depends on the specific context or situation.
In general terms,
Work is done on a refrigerator when an external force or energy is applied to the refrigerator to compress the refrigerant and drive the cooling cycle.
This work is usually done by a compressor, which requires energy input to operate.
The efficiency of a refrigerator, including Carnot refrigerators, is given by the coefficient of performance (COP).
The COP is defined as the ratio of the cooling effect (Qc) to the work input (W):
COP = Qc / W
For a Carnot refrigerator, which is an idealized and reversible refrigerator operating between two temperature reservoirs, the COP is given by:
COP = Tc / (Th - Tc)
Where:
Tc = Temperature of the cold reservoir (inside the refrigerator)
Th = Temperature of the hot reservoir (outside the refrigerator)
Generally, higher-efficiency refrigerators require less work input to achieve a given cooling effect.
However, the actual rate of work done on a specific refrigerator depends on its design, efficiency, and the cooling requirements of the system.
Thus,
The rate at which work is done on the refrigerator and Carnot depends on the cooling effect desired and the efficiency of the refrigerator.
Learn mroe about refrigerators and Carnot refrigerators here:
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Which ratios forms a proportion with 25/35?
A.3/5
B.15/21
C.24/34
D.5/10
Answer: its b
Step-by-step explanation:
0.45 divided by 150
Help me please 20 points for being a helping hand
Answer: 0.003
Explanation:
Susan will rotate triangle ABC 180°about one of the labeled points. Susan says, "The image will not touch the pre-image at all."
Which points could be her center of rotation?
Select each correct answer.
point C
point D
point E
point F
Answer:
point E and F
Step-by-step explanation:
the only ones that make sense
A problem states: "There are 5 more girls than boys at the party. There are 27 children at the party in all. How many boys are there at the party?"
Let b represent the number of boys.
Which expression represents the number of girls?
A .b+5 B. b*5 C. b-5 D. 5-b
27-5 = 22
22/11 = 11
there are 11 boys at the party
expression = b+5
Calculate the perimeter of an equilateral triangle which has sides of 14cm
How do you solve R= us for u
Sarah has 12 shirts and 3 pairs of pants. How many combinations of outfits can she make
The sum of three consecutive integers is 72. What are the integers?
How to find the opposite and the reciprocal of the number 500
y-7/2=1/2 (x-4) is written in point-slope form. What is the y-intercept of the equation?