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Related Questions
Which shows one way to determine the factors of x3 4x2 5x 20 by grouping?.
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The factors of the polynomial are [tex]\rm (x^2+5)(x+4)[/tex]
What are the factors?
Factorization of an algebraic expression means writing the given expression as a product of its factors.
These factors can be numbers, variables, or an algebraic expression.
Given
The given polynomial is;
[tex]\rm x^3 + 4x^2 + 5x + 20[/tex]
The factors of the polynomial are as follows;
[tex]\rm x^3 + 4x^2 + 5x + 20\\\\x^2(x+4)+5(x+4)\\\\(x^2+5)(x+4)[/tex]
Hence, the factors of the polynomial are [tex]\rm (x^2+5)(x+4)[/tex].
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Anouk does 150 J of work using a hammer to pull a nail out of a piece of wood, and the hammer does 105 J of work on the nail. What is the efficiency of the hammer? 1. 4% 7% 70% 143%.
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If Anouk does 150 J of work using a hammer to pull a nail out of a piece of wood, and the hammer does 105 J of work on the nail then the efficiency of the hammer is 70%
What is efficiency ?Efficiency is the ability to avoid wasting materials, energy, efforts, money, and time in doing something or in producing a desired result.
Given that Anouk does 150 J of work using a hammer to pull a nail out of a piece of wood, and the hammer does 105 J of work on the nail.
Efficiency of hammer can be calculated as
efficiency = output obtained / input given
E=105/150
E=7/10
E=0.7
Converting into percentage
[tex]E=0.7\times100\%\\\\E=70\%[/tex]
If Anouk does 150 J of work using a hammer to pull a nail out of a piece of wood, and the hammer does 105 J of work on the nail then the efficiency of the hammer is 70%
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I have nothing to do. Someone just want to [forbidden word]
c
h
a
t
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Answer:
meee3eeeee
Step-by-step explanation:
this answer nees to be at least 20 characters long
I WILL GIVE BRAINLY TO THE FIRST PERSON WHO ANSWERS
Sara is making a scale drawing of a painting that is 48 in wide by 120 in high. Her paper is
12 in wide and 24 in tall. She decides to use the scale 1in=4in. Is this a reasonable scale?
DON'T USE LINKS OR I WILL REPORT YOU!!!
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Answer: Not reasonable
Step-by-step explanation:48/4 = 12in
120/4 = 30in
12 = 12 30 >24
So it is not reasonable scale.
by ~Gamer~
Answer:
No, it isn't a reasonable scale.
Step-by-step explanation:
if the scale is 1in=4in then 12 by 24 paper should equal a 48 by 96 painting. That is not the case since the painting is 48 by 120.
A more appropriate scale for a 1=4 ratio would be 12 by 30.
I hope this helps!
A survey was taken of children between the ages of 3 and 7. Let A be the event that the person has 2 siblings, and let B be the event that the person does not have a pet. A 6-column table has 3 rows. The first column has entries has a pet, does not have a pet, total. The second column is labeled 0 siblings with entries 29, 31, 60. The third column is labeled 1 sibling with entries 84, 45, 129. The fourth column is labeled 2 siblings with entries 27, 18, 45. The fifth column is labeled 3 or more siblings with entries 10, 6, 16. The sixth column is labeled Total with entries 150, 100, 250. Which statement is true about whether A and B are independent events? A and B are independent events because P(A∣B) = P(A) = 0. 18. A and B are independent events because P(A∣B) = P(A) = 0. 4. A and B are not independent events because P(A∣B) = 0. 4 and P(A) = 0. 18. A and B are not independent events because P(A∣B) = 0. 18 and P(A) = 0. 4.
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Hence, statement for survey of children which is true about whether A and B are independent events or not is A and B are not independent events because,
[tex]P(A|B) = 0. 18 \\P(A) = 0. 4.[/tex]
What is the independent event?Independent events are those events whose occurrences does not depends on the other events.
A survey was taken of children between the ages of 3 and 7. Let A be the event that the person has 2 siblings, and let B be the event that the person does not have a pet. A 6-column table has 3 rows.
The table for the survey is given as,
The first column has entries has a pet, does not have a pet, total. The second column is labeled 0 siblings with entries 29, 31, 60. The third column is labeled 1 sibling with entries 84, 45, 129. The fourth column is labeled 2 siblings with entries 27, 18, 45. The fifth column is labeled 3 or more siblings with entries 10, 6, 16. The sixth column is labeled Total with entries 150, 100, 250.Here, A is the event that a person has 2 siblings, and the B is the event, that a person does not have pet.
As, A and B are independent events then,
[tex]P(A|B)=P(A)[/tex]
Here, the values we have,
[tex]P(A|B) = 0. 18 \\P(A) = 0. 4.[/tex]
Thus, the statement which is true about whether A and B are independent events or not is A and B are not independent events because P(A∣B) = 0. 18 and P(A) = 0. 4.
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Answer:
A and B are independent events because P(A∣B) = P(A) = 0.18.
A fully shaded model represents 100%. Which model is shaded to represent 4/5 PLSSS NEED THIS NOW
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Answer:
Step-by-step explanation:
c
pretty pls help me! pls god bless who ever answers
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Answer: D
Step-by-step explanation: At the year 1993 - 1994 they only opened 100
Paul bought 4 DVDs for $9.95 each. What was his total cost?
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Answer:
$39.80
Step-by-step explanation:
We need to set up a small equation in order to solve this. We are given the number of DVDs (4) and the cost of each ($9.95)Our equation is $9.95 • 4 = ?As you can see, we need to multiply $9.95 by 4 in order to get the total cost.Once we multiply, we get $39.80If I am incorrect in my reasoning, please let me know so that I can plan better for my future answers. Have an amazing day.
Simplify ur answer
3+3s-2s
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The answer is 3+s because 3s-2s=s and when you simplify your answer that's what you get
Tina used 674 cell phone minutes last month. Which statements are true?
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Answer:
the first one and the last one
Step-by-step explanation:
Answer:
an apple a potato and soup= 1, 3, 4
Step-by-step explanation:
Ms. Patterson burns 236 calories riding her bike every hour. She wants to burn more than 590 calories riding her bike at the same rate. Which inequality represents all possible values for t, the number of hours Ms. Gallegos must ride her bike to burn more than 590 calories? Question 1 options: t > 2. 5 t < 2. 5 t >0. 4 t < 0. 4.
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Ms. Patterson will take t>2.5 hours to burn 590 calories riding her bike at the same rate which is 236 calories every hour.
What amount of time Ms. Patterson will take to burn more then 590 ?Given that -
she burns 236 calories in 1 hour get = [tex]\dfrac{1}{236}[/tex] hours
so time taken to burn 590 calories at same rate = [tex]590 \times\dfrac{1}{236}[/tex] hours
so time taken to burn 590 calories at same rate = 2.5 hours
hence Ms. Patterson will take t>2.5 hours to burn 590 calories riding her bike at the same rate which is 236 calories every hour.
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Approximate the interest rate for a lease that comes with a money factor of 0. 27. A. 0. 65% b. 1. 13% c. 6. 5% d. 11. 25%.
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Money factor is the method for determining the financing charges. The interest rate for a money factor of 0.00027 is 0.65%.
What is the money factor?The money factor is the method for determining the financing charges on a lease with monthly payments. It is given by the formula,
[tex]\rm Money\ Factor = \dfrac{Interest\ Rate}{2400}[/tex]
As it is given that the money factor is 0.00027, therefore, substituting the value we will get,
[tex]\rm Money\ Factor = \dfrac{Interest\ Rate}{2400}\\\\0.00027 = \dfrac{Interest\ Rate}{2400}\\\\Interest\ Rate = 0.648\% \approx 0.65\%[/tex]
Hence, the interest rate for a money factor of 0.00027 is 0.65%.
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help guys pls cmon im bad at math
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Answer:
ba.80 5. Area =72 5. Perimeter =44 6b.36
Step-by-step explanation:
ba. b*h is the formula the base is 10 and the height is 8 multiplied is 80.
Explanation=in the comments
I need help on this. Also if you can explain how you got it, it would help!! Thank you
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Mr. Tompkin's art class painted a mural on one wall of the classroom.
The table shows the amounts of paint they used. Which paint did they use the most? Which paint did they use the least?
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Answer:
Answer B is the correct answer
Answer: the answer is D
They used black the most and red the least.
Step-by-step explanation:
Can some one please help me out
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m is the gradient
gradient is the difference between two y axis divide by the same two axis but for x
Eg
(x, y) (a, b)
y - b / x - b
C is the y intercept
Where x is 0
If you need any more help please comment
Answer:
y=4x2^x
This is the answer
wo neighboring homeowners, , 2, simultaneously choose how many hours to spend maintaining a beautiful lawn. The average benefit per hour is
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To calculate the average benefit of hours we must add all the values then divide by the number of values that we have.
What is the average?Average is a term that refers to a value that represents the mean of a group of values. For example, if my friends and I have a race to run from point A to point B and our times are:
69 seconds.58 seconds.45 seconds.120 seconds.76 seconds.The average time of my group of friends would be:
69 + 58 + 45 + 120 + 76 = 368
358 ÷ 73.6 seconds
The average of my group of friends would be 73.6 seconds.
According to the above, to identify the average profit per hour of my neighbors who own their lawns, you must use the same formula to obtain the result.
Note: This question is incomplete because the are some information missing. However I can answer it based on my prior general knowledge.
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3a(2 + a) when a=5
Answer?????
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[tex]3a(2 + a) \\ 3 \times 5(2 + 5 ) \\ 15(7) \\ 150[/tex]
A 2 - gallon jug of water costs $5.92. What is the price per unit?
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Answer:
2.96
Step-by-step explanation:
2 gal is 5.92 so 5.92 ÷ 2 is 2.96
Help if you understand please and thanks
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What is the midpoint of the line segment joining (-4,-2) and (2,8)?
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please help 100 points easy question for brainliest
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Answer:
height = 5 ft
Step-by-step explanation:
area of a trapezoid = [tex]\dfrac12(a+b)h[/tex]
where a and b are the bases and h is the height
Given:
area = 25.5 ft²base a = 3.2 ftbase b = 7 ft[tex]\implies 25.5=\dfrac12(3.2+7)h\\\\\implies 25.5=5.1h\\\\\implies h=5[/tex]
Height be h
Area =1/2(Sum of parallel sides)×height[tex]\\ \rm\hookrightarrow 1/2(3.2+7)h=25.5[/tex]
[tex]\\ \rm\hookrightarrow 10.2h=51[/tex]
[tex]\\ \rm\hookrightarrow h=5ft[/tex]
If DE = 11 and EH = 8, find DF. Round your answer to the tenths place
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Just use the Pythagorean theorem and then multiply by 2 to find answer. See picture to see how I did it.
Gwen collected 9 shells every 4 minutes. If
she collected shells for 20 minutes, how
many shells did she collect?
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Answer:
the answer is 45
Step-by-step explanation:
lokohgvfvgjffff6f5gtg y
9. The equations below represent the total amount charged, y, by two different plumbers as a function of the number of hours worked, X
Plumber A: y = 20x + 60
Plumber B: y = 40x
The graphs of these functions cross at the point (3, 120). What does the point (3,120) signify?
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both plumbers charge 120 for 3 hours of work
Step-by-step explanation:
because the x is 3 hours and the y is 120 dollars, this means that the point both lines intersect on shows that the plumbers charge 120 for 3 hours of work
What’s the sum of 5 and x is 80 as an EQUATION? (Not solved) help D:
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Answer:
x + 5 = 80
Step-by-step explanation:
the sum of 5 and x is the addition of them , then
x + 5 = 80
The angle of ABC is how many degrees
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Answer:
I think the awsner is 180 deegrees
can someone explain how to do this please
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Answer:
f=3
Step-by-step explanation:
its basically telling u that x=5 so u replace x with 5
what is 100% if 60ft2 is 15%?
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Answer:
401.312
Step-by-step explanation:
Keep multiplying 60ft2 and you eventually get 401.312
Answer:
400ft2
Step-by-step explanation:
Multiply 60 by 100, then divide by 15
Laney buys a t-shirt and pair of jeans for $39.93. She has a coupon that will allow her to save 15% What
will the final purchase price be after a 7% sales tax?
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Answer:
$36.33
Step-by-step explanation:
So, when finding the percentage of a number you move the decimal point to the left two times.
39.93 x .15 = 6
39.93 - 6 = 33.93
(I subtracted the 6 because it was what was taken off by the coupon)
33.93 x .07 = 2.4
33.93 + 2.4 = 36.33
(Again, I added the 2.4 because it was what was added on by the sales tax)
I hope this helps! :)
