Answers
0 4
- 6 1
3 -4
Rember row times columns.
=>
a11 = 4*0 + 0*(-3) = 0
a12 = 4*1 + 0*1 = 4 + 0 = 4
a21 = -1*0 + 2*(-3) = 0 - 6 = -6
a22 = -1*1 + 2*1 = -1 + 2 = 1
a31 = -3*0 + (-1)*(-3) = 0 + 3 = 3
a32 = -3*1 + (-1)*1 = -3 - 1 = -4
Related Questions
Julio works at an electronics store where he earns $11 an hour. Last week, he received a $120 bonus. How many hours did he work if he earned $505 total last week?
Answers
385 divide by 11= 35
answer=35hrs
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What is the magnitude of the vector product? 4.00i + 7.00j?
Answers
Its magnitude is
[tex] \sqrt{4.00^{2}+7.00^{2}} = 8.062[/tex]
Answer: 8.062 (nearest thousandth)
Alex was hired to unpack 576 items of glass wear, at five cents per piece unpacked. For every item broken in the process, however, Alex had to pay $1.98. At the end of the job, Alex received $22.71. How many items did Alex break.
Answers
Guess and check: 1.98*5=9.9
28.80-9.9=18.9- too much
1.98*3=5.94
28.80-5.94=22.86- this is the closest
So he must have broken 3 items.
Hope this helps!
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Alex broke 3 glasses during the unpacking of the glasses.
As mentioned in the question, Alex was hired to unpack 576 items of glass wear, at five cents per piece unpacked. For every item broken in the process, however, Alex had to pay $1.98. At the end of the job, Alex received $22.71.
What is arithmetic?In mathematics, it deals with numbers of operations according to the statements. There are four major arithmetic operators, addition, subtraction, multiplication, and division,
The total amount earned for 576 glasses is given as,
= 576 × 0.05
= $28.80.
Amount earned = $22.71
Amount paid by Alex for the broken glass = $28.80 - $22.71 = 6.09
Total glass broked = 6.09 / 1.98 ≈ 3
Thus, Alex broke 3 glasses during the unpacking of the glasses.
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A pile of coins, consisting of quarters and half dollars, it worth $11.75. If there are 2 more quarters than half dollars, how many of each are there?
Answers
number of quarters = x + 2
amount of half dollars = 0.5x
amount of quarters = 0.25(x + 2)
= 0.25x + 0.5
total amount = 0.5x + 0.25x + 0.5
= 0.75x + 0.5
0.75x + 0.5 = 11.75
0.75x = 11.25
x = 15
number of quarters = x + 2
= 15 + 2
= 17
There are 17 quarters and 15 half dollars.
Let the number of half dollars be x,
number of quarters = x + 2
amount of half dollars = 0.5x
amount of quarters = 0.25(x + 2)
= 0.25x + 0.5
total amount = 0.5x + 0.25x + 0.5
= 0.75x + 0.5
0.75x + 0.5 = 11.75
0.75x = 11.25
x = 15
number of quarters = x + 2
= 15 + 2
= 17
There are 17 quarters and 15 half dollars.
cory earns 52.50 in 7 hours. find the unit rate
Answers
divide 52.5o by 7
52.50 / 7 = 7.50 per hour
Please me
Estimate 127+290
Answers
For the compound inequality x + 2 ≥ a AND x - 7 ≤ b, find values of a and b for which the only solution is x = 1.
Answers
How to write 645,300 in expanded form using exponents?
Answers
To express 645,300 in expanded form using exponents, it is written as [tex]6x10^{5} + 4x10^{4} + 5x10^{3}+ 3x10^{2}[/tex]x, breaking down each digit by its place value and expressing each as a power of 10.
To write the number 645,300 in expanded form using exponents, we break down each digit according to its place value and then express each of these as a power of 10. The place values for the number 645,300 are as follows:
600,000 which is 6 times 100,000
40,000 which is 4 times 10,000
5,000 which is 5 times 1,000
300 which is 3 times 100
Now we express these place values using exponents:
645,300 = [tex]6x10^{5} + 4x10^{4} + 5x10^{3}+ 3x10^{2}[/tex]
This notation shows the number 645,300 written as the sum of each digit multiplied by the appropriate power of 10 based on its position in the number.
A car starts from rest and accelerates uniformly at 3.0 m/s2 toward the north. a second car starts from rest 6.0 s later at the same point and accelerates uniformly at 5.0 m/s2 toward the north. how long after the second car starts does it overtake the first car?
Answers
Answer:
the answer is t = 20.625
Step-by-step explanation:
To begin, you would need to find the displacement of the first car and the equation to find that is d = 1/2at^2. So you would plug in what you have from the problem into the equation: d = (1/2)3(6)^2 and d is equal to 54 m. THIS IS YOUR DISPLACEMENT FOR THE FIRST CAR.
Next, you need to find the velocity of the car and the equation would be v = at. Plug in what you know from the problem: v = 3(6) which is 18. THIS IS YOUR INITIAL VELOCITY.
Next, we need to find out the distance of the 2nd car and we would use d = 1/2at^2. Plug in what you now from the problem: d = (1/2)5t^2 which would be d = 2.5t^2.
Next, you would equal these two equations together: 2.5t^2 = 1.5t^2 + 18t +54. All these values are from when we solved them from above, and once you solve it you will get 20.625. (SOLVE FOR T)
If 1/64=4^2s-1 times 16^2s+2 what is the value of s?
Answers
Answer: s=-1
Explanation:
We can re-write the equation as follows:
[tex]\frac{1}{64}=(4^{2s-1})(16^{2s+2})[/tex]
Let's rewrite the terms on the left and on the right as follows:
[tex]2^{-6} = ((2^2)^{2s-1})((2^4)^{2s+2})[/tex]
So we have
[tex]2^{-6} = (2^{2(2s-1)})(2^{4(2s+2)})[/tex]
Now we can use the following rule:
[tex]x^{a+b}=x^a x^b[/tex]
to rewrite the term on the right:
[tex](2^{2(2s-1)})(2^{4(2s+2)})=2^{2(2s-1)+4(2s+2)}[/tex]
So now we have
[tex]2^{-6}=2^{2(2s-1)+4(2s+2)}[/tex]
and since the bases are the same, we can just equalize the exponents:
[tex]-6=2(2s-1)+4(2s+2)[/tex]
[tex]-6=4s-2+8s+8\\-12 = 12 s\\s=-1[/tex]
This diagram of airport runway intersections shows two parallel runways. A taxiway crosses both runways. How are 6 and 2 related?
corresponding angles
alternate interior angles
same-side interior angles
none of these
Answers
How many variables are displayed in a scatter plot
Answers
two variables
BACK.
Scatter plots are an awesome way to display two-variable data (that is, data with only two variables) and make predictions based on the data. These types of plots show individual data values, as opposed to histograms and box-and-whisker plots.
what is the coefficient in the expression 3x/13+4?
Answers
So in the given expression 3x/13 + 4. 3 / 13 is the coefficient of x, as 3 / 13 is multiplying with x.
Answer:3/13
Step-by-step explanation:
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Yesterday, Chau had m baseball cards. Today, he gave 5 away. Using m , write an expression for the number of cards Chau has left.
Answers
m - 5 = x.
As an example of what the answer is, replace m with 10.
If he had 10 baseball cards and gave away 5 today, x = 5.
The answer is m - 5 = x.
there are 24 sixth graders and 40 seventh graders. Mr chan wants to divide both grades into groups of equal size ,with the greatest possible number of students in each group. How many students should be in each group?
Answers
the store has 53 cases of apples and oranges in a storm if there are 28 cases of apples how many cases of oranges are there in the store room
Answers
An overdraft balance occurs when the available balance in a bank account is below zero. Yvonne has an overdraft balance at the beginning of the year. The function graphed models Yvonne's account balance, y, in dollars, x weeks after the beginning of the year.
Select True or False to describe each statement.
True False
The x-intercept represents Yvonne's account balance at the beginning of the year.
The slope represents the amount Yvonne deposits to her account each week.
Yvonne no longer has an overdraft balance 4 weeks after the beginning of the year.
Graph of a line on a coordinate plane. The horizontal x axis ranges from 0 to 9 in increments of 1. The vertical y axis ranges from negative 100 to 100 in increments of twenty five. A line passes through the points begin ordered pair 0 comma negative 1 hundred end ordered pair and begin ordered pair 4 comma 0 end ordered pair and begin ordered pair 8 comma 1 hundred end ordered pair.
Answers
Answer:
False; True; True.
Step-by-step explanation:
In this situation, the y-intercept would represent the amount of money in her account at x=0 weeks, or the beginning of the year. This is not the x-intercept, so the first statement is false.
The slope is the rate of change. This would describe how her account changes every week, so this represents the amount of money she deposits into her account each week. This means the second statement is true.
The line goes through the point (4, 0). Since x is the number of weeks, this would represent the amount in her account after 4 weeks. Since the y-value is 0, this means she no longer has an overdraft balance after 4 weeks. This means the second statement is true.
Following are the response to the given points:
The y-intercept, it would represent the number of funds in her account at x=0 weeks, or the start of the year. As this is not the x-intercept, the first assertion is untrue.The rate of increase is represented by the slope. This would illustrate how her account varies, That's the sum of money she puts into her account each week. This point is crossed by the line (4, 0), since x is indeed a couple of weeks, this is the amount in the account following 4 weeks. Since y-value=0, she no longer has an overflow balance after 4 weeks.Therefore, the final answer is "false, true, and true".
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A firm advertises for workers to address envelopes. Priscilla says she will work 100 hours. Herb will work for 80 hours. If each can address 10,000 envelopes in the time they work, how long would it take them to address 10,000 envelopes if they work together?
Answers
Priscilla and Herb can address 10,000 envelopes together in approximately 44.44 hours, when we combine their individual work rates of 100 and 125 envelopes per hour respectively.
Explanation:Priscilla and Herb are addressing envelopes for a firm, and we need to determine how long it would take them to address 10,000 envelopes if they work together. Priscilla can address 10,000 envelopes in 100 hours, and Herb can do the same in 80 hours.
To solve this, we can calculate each person's work rate and then combine these work rates to get the rate at which they complete the task together.
First, we calculate their work rates:
Priscilla's rate: 10,000 envelopes / 100 hours = 100 envelopes per hourHerb's rate: 10,000 envelopes / 80 hours = 125 envelopes per hourWorking together, their combined rate would be:
Combined rate = Priscilla's rate + Herb's rate
Combined rate = 100 envelopes/hour + 125 envelopes/hour
Combined rate = 225 envelopes per hour
To address 10,000 envelopes at this combined rate, we can divide the total number of envelopes by their combined rate:
Time to address 10,000 envelopes together = 10,000 envelopes / 225 envelopes/hour
Time to address 10,000 envelopes together = approximately 44.44 hours
Valentine purchased 200 beads for $48 to make necklaces. If she needs to buy 25 more beads,how much will she pay if she is charged the same rate?
Answers
A doctors office schedules 15-minute appointments and half hour appointments for week days. The doctor limits these appointments to, at most, 30 hours per week. Write an inequality to represent the number of 15-minute appointments x and the number of half-hour appointments y the doctor may have in a week
Answers
multipliy 30*60 (as it is 60min in an hour). Convert 15min and 30min into hours, leaving 30 as is.
(1/4)x + (1/2)y ≤ 30
By multiplying every term with 60( to convert from hours to minutes) we get
15x+30y≤1800
12 students share 3 pizzas equally what fraction of the pizza each student gets
Answers
Final answer:
Each student gets 1/4 of a pizza when 12 students share 3 pizzas equally. This is because 3 pizzas divided by 12 students results in each student receiving 1/4 of a pizza.
Explanation:
To determine the fraction of the pizza each student gets when 12 students share 3 pizzas equally, you'd divide the total number of pizzas by the number of students. Here's the step-by-step breakdown:
First, understand that each pizza can be considered as '1 whole' unit. So, 3 pizzas would be '3 whole' units.To share these '3 whole' units equally among 12 students, we need to divide 3 by 12.This calculation would look like this: 3 ÷ 12, which simplifies to 1 ÷ 4 when reduced to the lowest terms, as you are essentially dividing each pizza into four equal parts for every group of three students.Therefore, each student gets 1/4 of a pizza.Understanding fractions can be similar to figuring out slices of pie or the number of quarters in a dollar.
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a bean plant grows at a constant rate for a month....
Answers
Hope this helps :)
What is the equation of the circle passing through the point (−5, −2) whose center is at (−2,3)?
Answers
The equation of the circle passing through the point (−5, −2) and center at (−2, 3) is [tex]\bold{( x +2 )^2 + ( y - 3 )^2 = 34}[/tex]
What is the general equation of the circle?The general equation of the circle whose center at (h, k) and radius r is,
[tex]( x - h )^2 + ( y - k )^2 = r^2[/tex]
For given example,
the circle passing through the point (−5, −2) whose center is at (−2, 3).
The radius of the circle is the distance between point (-5, -2) and the center (-2, 3).
Using distance formula the radius of a circle would be,
⇒ [tex]r=\sqrt{(-2-3)^2 + (-5-(-2))^2}[/tex]
⇒ [tex]r=\sqrt{(-5)^2+(-3)^2}[/tex]
⇒ [tex]r=\sqrt{25+9}[/tex]
⇒ [tex]r=\sqrt{34}[/tex] units
Let center (h, k) = (-2, 3)
Using the general form of the circle,
⇒ [tex]( x - h )^2 + ( y - k )^2 = r^2[/tex]
⇒ [tex]( x - (-2) )^2 + ( y - 3 )^2 = (\sqrt{34})^2[/tex]
⇒ [tex]( x +2 )^2 + ( y - 3 )^2 = 34[/tex]
Therefore, the equation of the circle passing through the point (−5, −2) whose center is at (−2,3) would be [tex]\bold{( x +2 )^2 + ( y - 3 )^2 = 34}[/tex]
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- 24 = 6a - 15 - 5a solve for the answer of the question
Answers
9 = a Add 15 to both sides to get the value of a
A new computer game has been developed and 80 veteran game players will test its market potential. of sixty players liked the game, what is the probability that any veteran game player will like the new computer game
Answers
75% of the veteran game players liked the game
3/4 is the probability that any veteran game player will like the new computer game.
What is Probability?Probability means possibility. It is a branch of mathematics that deals with the occurrence of a random event.
Given,
New computer game has been developed and 80 veteran game players will test its market potential.
In this sixty players liked the game.
We need to find the probability that any veteran game player will like the new computer game.
To find the probability we just need to divide sixty by 80.
60/80
3/4
Hence 3/4 is the probability that any veteran game player will like the new computer game.
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Help me solve this equation please. y/9 + 5 = 0
Answers
y/9 +5 =0
subtract 5 from each side
y/9 = -5
multiply both sides by 9
y = -5 * 9
y = -45
y + 45 = 0. Then y = -45.
Round off446,221 to the nearest ten
Answers
Answer:
Answer when we round off 446,221 to the nearest ten is 446,220
Step-by-step explanation:
We need to round off 446,221 to the nearest ten.
Nearest ten to the 446,221 can be 446,220 or 446,230
Difference between 446,221 and 446,220 = 446,221 - 446,220 = 1
Difference between 446,221 and 446,230 = 446,230 - 446,221 = 9
Here the difference is minimum for 446,220
Answer when we round off 446,221 to the nearest ten is 446,220
General house cleaning (sweeping the floor vacuuming laundry) can burn 470 calories every two hour determine the unit rate
Answers
Answer:
The unit rate is 235 calories per hour.
Step-by-step explanation:
General house cleaning (sweeping the floor vacuuming laundry) can burn 470 calories every two hour determine the unit rate.
Unit rate means we have to find the calories burned in 1 hour.
Hence, calories burned in 1 hour = [tex]\frac{470}{2}= 235[/tex]
Answer :
The unit rate is 235 calories per hour.
A cylinder has a volume of 360 in^3. If the height and radius are multiplied by 2.5, what will the resulting volume be?
A) 5525 in^3
B) 2880 in^3
C) 5400 in^3
D) 3600 in^3
Answers
you invest 1600 in an account that pays an interest rate of 6.5%, what is your balance after 6 years and round your answer to the nearest hundredth.
Answers
To calculate the balance after 6 years with compound interest, use the formula Balance = Principal * (1 + Interest Rate)^Time. Substituting the values, we find the balance to be approximately $2,243.89.
Explanation:To calculate the balance after 6 years, we need to use the formula for compound interest:
Balance = Principal * (1 + Interest Rate)^Time
Given that the principal (initial investment) is $1600 and the interest rate is 6.5%, we can substitute these values into the formula:
Balance = 1600 * (1 + 0.065)^6
Calculating this, we find that the balance after 6 years is approximately $2,243.89.
The balance after 6 years is approximately $2105.69.
Explanation:To find the balance after 6 years, we can use the formula for compound interest:
Balance = Principal(1 + Interest Rate)^Ti
Plugging in the given values, we have:
Balance = $1600(1 + 0.065)^6
Simplifying, we get:
Balance = $1600(1.065)^6
Calculating, we find that the balance after 6 years is approximately $oxed{2105.69}.