Human hair: 8.0 x 10-4 = 0.00080
Cat hair: 4.0 x 10-1 = 0.40
Subtracting: 0.40 - 0.00080 = 0.3992
Using rules of precision, the answer becomes 0.40
Answer:
time 4learning answer is 500
Step-by-step explanation:
Mark’s father drove the family car 32,143 miles last year. He drove the car 29,675 miles this year.
How many fewer miles did Mark’s father drive the car this year?
A. 2,468 mi
B. 2,578 mi
C. 3,468 mi
D. 3,478 mi
A new sidewalk will be 4 ft wide, 280 ft long, and filled to a depth of 9 inches (0.75 ft) with concrete. How many cubic yards of concrete are needed?
Answer:
Volume of the pit is [tex]31.11[/tex] cubic yards.
Step-by-step explanation:
First lets change all the values to yards.
1 yard = 3 foot
Width in yards = [tex]\frac{4}{3}[/tex] yards
Length in yards = [tex]\frac{280}{3}[/tex] yards
Depth in yards = [tex]\frac{0.75}{3}[/tex] yards
Volume of the pit = Length * Width * Depth
=[tex]\frac{4}{3} *\frac{280}{3} *\frac{0.75}{3}[/tex]
=[tex]\frac{4*280*0.75}{3*3*3}[/tex]
=[tex]\frac{840}{27}[/tex]
=[tex]31.11[/tex] cubic yards.
Volume of the pit is [tex]31.11[/tex] cubic yards.
Karla is mowing her lawn. She knows 2/5 of the lawn before stopping for a snack. She resumes mowing after her snack and mows another 1/3 of her lawn before stopping. What total fraction of the lawn does Karla mow before lunch?
Karla mows a total of 11/15 of her lawn before lunch after adding the fractions 2/5 and 1/3 with a common denominator of 15.
The student's question has two parts where Karla mows her lawn in fractions, first 2/5 and then another 1/3. To find the total fraction of the lawn that she mows before lunch, these two fractions need to be added. However, since they do not have the same denominator, we first need to find a common denominator to combine these fractions properly.
The least common denominator (LCD) for 5 and 3 is 15. We convert the fractions to have this common denominator:
(2/5) becomes (6/15) after multiplying both the numerator and denominator by 3.(1/3) becomes (5/15) after multiplying both the numerator and denominator by 5.Now we add the fractions:
(6/15) + (5/15) = (11/15)
Thus, Karla mows a total of 11/15 of her lawn before lunch.
Write a mixed number for p so that 3 1/4 x p is more than 3 1/4
An apple juice producer buys all his apples from a conglomerate of apple growers in one northwest state. the amount of juice squeezed from each of these apples is approximately normally distributed with a mean of 2.25 ounces and a standard deviation of 0.15 ounce.what is the probability that a randomly selected apple will contain between 2.00 and 2.15 ounces?
uka and Anja each measured the height of their friend three times. Their friend is 59 inches tall. They recorded their measurements as shown. Luka: 59 in., 58, in., 58 in. Anja: 59.3 in., 59.6 in., 58.2 in. Which statement is true? Luka’s measurements are more precise and more accurate. Anja’s measurements are more precise and more accurate. Luka’s measurements are more precise, but Anja’s measurements are more accurate. Luka’s measurements are more accurate, but Anja’s measurements are more precise.
Luka’s measurements are more precise, but Anja’s measurements are more accurate.
What is measurement?In the study of science and mathematics, measurement is a fundamental concept. The characteristics of an object or event that we can compare to other things or events are quantified by measurement. When discussing the division of a quantity, the term "measurement" is the one that is used the most frequently. Also, when it takes a certain number of things to complete a certain task. We frequently encounter various length, weight, and time measurement types in our daily lives.
Given actual height of their friend is 59 inches
Luka recording 59 in, 58 in, 58in
Anja recording 59.3 in, 59.6 in, 58.2 in,
Accuracy is how close a measured value is to the actual value.
Precision is how close the measured values are to each other.
Accuracy:
Luka: ( 59 + 58 + 58 ) / 3 = 58.33
Anja: ( 59.3 + 59.6 + 58.2 ) / 3 = 59.03 ( closer to 59 )
Precision:
Luka : 59 - 58 = 1 ( subtract the lowest from the highest result )
Anja: 59.6 - 58.2 = 1.4
Luka's measurements are more precise, but Anja's measurements are more accurate.
Hence option C is correct.
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One side of a square is 2^3 inches.
What would be the area of the square?
*Solve the equation of 2^3 first*
4n less than or equal to 12
△ABC is reflected to form △A′B′C′ .
The vertices of △ABC are A(−7, 1) , B(−5, −3) , and C(−3, 2) . The vertices of △A′B′C′ are A′(−7, −1) , B′(−5, 3) , and C′(−3, −2) .
Which reflection results in the transformation of △ABC to △A′B′C′ ?
A)reflection across the x-axis
B) reflection across the y-axis
C)reflection across y = x
D)reflection across y=−x
Answer:
The correct option is A.
Step-by-step explanation:
The vertices of △ABC are A(−7, 1) , B(−5, −3) , and C(−3, 2) . The vertices of △A′B′C′ are A′(−7, −1) , B′(−5, 3) , and C′(−3, −2) .
The relation between coordinates of preimage and image is defined as
[tex](x,y)\rightarrow (x,-y)[/tex]
Sign of y-coordinate changes but x-coordinate remains the same. It is possible it the figure is reflection across the x-axis.
Therefore the correct option is A.
If your expenses are more than your income, then you have a positive net cash flow. Please select the best answer from the choices provided T F
Answer:
No, it is not a positive net cash flow. Because they are spending more than they even have which is creating debt.
Step-by-step explanation:
If your expenses are more than your income, then you have a positive net cash flow, which is false.
What is cash flow?The cash balance of liquid assets coming into and going out of a business is referred to as cash flow. Money spent and money received reflect inflows and outflows, respectively.
The cash flow is the difference between outflow and inflow.
Cash flow = out flow - inflow
If the value of the cash flow is negative that means the expense is more.
If the value of the cash flow is positive that means the income is more.
If your expenses are more than your income, then you have a positive net cash flow, which is false.
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Calculate.
(10.4)2 =
20.16
100.16
108.16
20.8
Question 10 an urn contains two white marbles and one black marble. a marble is drawn from the urn without replacement and put aside without my seeing it. then a second marble is drawn, and it is white. what is the probability that the unknown removed marble is white, and what is the probability that it is black?
Final answer:
The probability that the unknown removed marble is white is 1/2, and the probability that it is black is also 1/2. This is calculated by considering the outcomes of the draws, their probabilities, and the fact that drawing a white marble after another without replacement affects the outcomes.
Explanation:
The question involves calculating conditional probabilities in a scenario where marbles are drawn from an urn without replacement. Initially, the urn contains two white marbles and one black marble. A marble is drawn and set aside (its color unknown), and then a second marble is drawn, which is observed to be white. We are asked to find the probability that the first marble drawn was white, and the probability it was black.
To solve this, we consider the two possible scenarios for the first draw: drawing a white marble or drawing a black marble, and then drawing a white marble in the second draw. The probability of drawing white then another white (WW) equals, the probability of drawing a white marble first (2/3) multiplied by the probability of drawing the second white marble given the first was white (1/2). This gives (2/3)*(1/2) = 1/3. Alternatively, the probability of drawing a black then a white marble (BW) equals the probability of drawing a black marble first (1/3) multiplied by the probability of drawing a white marble given the first was black (2/2) = 1/3, simplifying to (1/3)*(1) = 1/3
To find the probability that the unknown marble is white, we see that both scenarios WW and BW result in drawing a white marble second, so we only need to calculate the probability of the WW scenario over the total probability of drawing a white marble in the second draw. This gives us 1/3 / (1/3 + 1/3) = 1/2. Therefore, the probability that the unknown marble is white is 1/2, and by complement, the probability it is black is also 1/2
Marlena is making fruit salad she will choose from 6 of the 11 different fruits offered at a fruit stand. How many different fruit salads can she make
The Correct answer is 462
There are 50 dimes in a roll of dimes, 40 nickels in a roll of nickels, and 40 quarters in a roll of quarters. Rob has 12 rolls of coins with a total value of $70.00. He has 3 more rolls of nickels than dimes. How many rolls of each coin does he have?
Akira Chang's uncle dies without a will, leaving an estate of $945,000. His heirs consist of a wife and two adult children. His state requires that, in the absence of a will, each child is to receive two-thirds as much as a spouse. How much will his wife receive?
What is the truth value of p ∨ q?
Answer:
T T T F
Step-by-step explanation:
suppose that p is true and q is true then the truth value of p∨q is true .
when p is true and q is false then the truth values of p∨q is true
when we take p is false and q is true then the truth value is p∨q is true
when we take p is false and q is false then the truth value is p∨q is false .
if any value of p or q is true then truth value of p∨q is true and if both are false then the truth value of p∨q is false .
Trigonometric Identities and Applications?
Trigonometric identities are equations that hold true for all permissible values of the involved variables. They are fundamental to many areas of mathematics and have applications in various fields such as physics and engineering.
Explanation:Trigonometric identities are equations that are true for all values of the variables where both sides of the equation are defined. They are fundamental to the study of mathematics, particularly in geometry, calculus and physics.
Some of the basic trigonometric identities include:
Reciprocal identities:sin = 1/csc θcos = 1/sec θtan = 1/cot θPythagorean identities:sin² θ + cos² θ = 11 + tan² θ = sec² θ1 + cot² θ = csc² θ...Trigonometric identities are widely used in solving trigonometric equations and proving other identities, and in many fields such as engineering, physics and computer science.
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Calculate the effective rate of interest (to the nearest hundredth percent) of the following Treasury bill. Given: $10,000 Treasury bill, 3.85% for 13 weeks.
What is 5(7h+3m) equal to?
find the height of each pyramid square pyramid: volume 297 ft cubed area of the base 81 ft squared
I don't know if this is right but I got 0.14
Ethan is conducting an experiment to determine whether a new medication is effective in reducing sneezing. He finds 1,500 volunteers with sneezing issues and divides them into 2 groups. The control group does not receive any medication; the treatment group receives the medication. The patients in the treatment group show reduced signs of sneezing. What can Ethan conclude from this experiment?
During a two week period, Norm worked 85.6 hours. His hourly wage is $6.92. How much did he earn? (Round the answer to the nearest cent)
A store sells two kinds of candles, scented and unscented. The scented burns 1/12 inches in 20 minutes and the unscented burns 1/6 inches in 30 minutes. Which type of candle burns in 1 hour and what is its burn rate?
Given :The scented burns [tex] \frac{1}{12} [/tex] inches in 20 minutes
The scented candle will burn [tex] \frac{1}{12} times 3 =\frac{1}{4} [/tex] inches in one hour.
The unscented candle burns [tex] \frac{1}{6} [/tex] inches in 30 minutes
In one hour it will burn [tex] \frac{1}{6} times 2=\frac{1}{3} [/tex] inches .
Burn rate of scented is [tex] \frac{1}{4} [/tex] inches per hour.
Burn rate of unscented is [tex] \frac{1}{3} [/tex] inches per hour.
How do I solve the y= x/11- 11x
d/dx ( x/11- 11/x)
the width of a large, rectangular-shaped tree farm is 1.9 kilometers. The length of the farm is 4.4 kilometers. What is the best estimate of the area of the farm ?
Answer:- The best estimate of the area of the farm is 8 kilometers.
Explanation:-
Given:- Width of the rectangular shaped tree farm= 1.9 kilometers
⇒Estimated width of the farm=2 kilometers [2 is the nearest integer to 1.9]
Length of the rectangular shaped tree farm=4.4 kilometers
⇒Estimated length of the farm=4 kilometers [4 is the nearest integer to 4..4]
To make estimates, we usually round the numbers the nearest integer.
Now, Estimated Area of the Farm= estimated width × estimated length
= 2×4 kilometers = 8 kilometers.
∴the best estimate of the area of the farm =8 kilometers.
Lou Harris is guaranteed a minimum of $275 weekly salary plus 5 1/4% of hs total sales. What are his total sales for a week in which his gross pay was $700
The center of a circle is located at (5, −5) . The radius of the circle is 3.
What is the equation of the circle in general form?
x2+y2−10x+10y+41=0
x2+y2+10x−10y+47=0
x2+y2+10x−10y+41=0
x2+y2−10x+10y+47=0
Answer:
I did this twice to help anyone who might have missed from the same question I answered earlier. Have a nice day! Stay safe! And this is really good for k12 students!
Step-by-step explanation:
They could mow the lawn in how many hours if they work together
What is the range of f(x) = (3/4)x – 4?
{y | y > –4}
{y | y > 3/4}
{y | y < –4}
{y | y < 3/4}
Answer:
A- {y | y > -4}
Step-by-step explanation:
Since the range is x - 4 the range will only go down to - 4. It will not go past the - 4 mark. Therefore the range should be anything greater then -4 to infinity.
SO-
A- {y | y > -4}
Looking at the waves on an ocean beach, a girl notices that the waves reach the shore at the same time apart. She also notices that the distance between waves looks the same. In science, what do we call the distance between waves? A) amplitude B) frequency C) period D) wavelength
Answer:
D) Wavelength
Step-by-step explanation:
The correct answer is wavelength. Wavelength is defined as the distance between two identical points on the waves.
Amplitude is the maximum/minimum height reached by the wave. Frequency is defined as the number of waves passing through a point in 1 sec. Period or Time period is the reciprocal of Frequency and it represents time taken for the wave to complete its one cycle.
Therefore, from the given options, Wavelength is the best possible answer.
Answer: THE ANSWER IS D)WAVELENGTH
Step-by-step explanation: