Ms. Slaughter's homeroom recorded the total number of books read per month.
In November, they read 65 books, and in December they read 52 books. What
was the approximate percent decrease from November to December?
Helpppp work due today :/
Answers
Answer:
20%
Step-by-step explanation:
Let's set up an equation:
65-x%(65)=52
Let's change x% into x/100 to make calculations easier
65-x/100(65)=52
65-13x/20=52
Subtract 65 from both sides
-13x/20=-13
Multiply 20 to both sides to get rid of the fraction
-13x=-260
Divide -13 from both sides to isolate x
x=20
20%
Related Questions
Round the number 3,454,877 to the nearest 100,000.*
Answers
Answer:
3,500,000
Step-by-step explanation:
the ten thousands place is a 5 so you round the 4 up to a 5
Alex has 14 bulbs to make a string of holiday lights. How many distinct arrangements can he make if
he has 3 red bulbs, 4 green bulbs, 2 blue bulbs, and 5 yellow bulbs?
Answers
We have "9 sockets choose 3" for the 3 red lights. That's (9C3) ways.
After screwing in those 3 red bulbs, there remain only 6 open sockets.
We have "6 sockets choose 4" for the 4 yellow lights. That's (6C4) ways.
After screwing in those 4 red bulbs, there remain only 2 open sockets.
We have "2 sockets choose 2" for the blue lights. That's (2C2) = 1 way.
After screwing in those 2 bulbs, all the sockets have a bulb in them.
Answer (9C3)(6C4)(2C2) = 1260.
14. Which property is shown by 3 + 2 = 2 + 3? (1 point)
O Commutative Property of Addition
O Identity Property of Addition
O Distributive Property
O Associative Property of Addition
Answers
Answer: Commutative Property of Addition
Explanation: The problem 3 + 2 = 2 + 3 demonstrates the commutative property of addition. In other words, the commutative property of addition says that changing the order of the addends does not change the sum.
For example here, we can easily see that the sum of 3 + 2,
which is 5, is equal to the sum of 2 + 3, which is also 5.
\(\boxed{\large{\bold{\textbf{\textsf{{\color{blue}{Answer}}}}}}:)}\)
3 + 2 = 2 + 3It is commutative property of additionHELP ME OUT PLEASE!!!!
Based on this scatterplot, approximately how many medications will a person who is 55 years old pick up?
A) 1
B) 4
C) 2
D) 5
Answers
Answer:
I believe it is A.
Step-by-step explanation:
We get rid of b and d in this equation because where the 50 mark is does not have many of the dots/meds. So that leaves us with A or C, so I only see one dot/meds on the 50 line so this gets C out of this and leaves A. Sorry if I am wrong I tried my best.
T. The entropy change As, for an ideal gas is given by the following formula: dT dV As=1C [c. R T V 7 where T is the thermodynamic temperature, Vis the volume and R = 8.314. Compute the entropy change when a gas expands from 1 litre to 3 litres for a temperature rise from 100 K to 400 K. Given that C = 45+6x10 °T+8x10T2. V - -
Answers
Answer:
The entropy change AS, for an ideal gas is given by: dt V Where T is the thermodynamic temperature, V is the volume and R=8.314. Determine the entropy change when a gas expands from 1 litre to 3 litres for a temperature rise from 100K to 400K given that: Cv = 45 + 6 x 10-T + 8 x 10-6T2 b) The average value of a complex voltage waveform is given by: V = ( 10 (10sin ox +3sin 30x +2 sin 508) dt Evaluate Vav correct to 2 decimal places.
answer and get brainliest
Answers
Answer:
50
Step-by-step explanation:
4 x 1=4
2.5 x 5=12.5
12.5 x 4=50
So 50 is the answer can i have brainliest now please
The test scores for an exam are approximatoly normally distributed with a mean 73 points and a standard deviation of 6 points. Use this information to answer each of the following. Express your answer as a whole percent
Answers
John's z-score is 0.75.
John's score of 79 on the math test corresponds to a z-score of 0.75 and a percentile of 77.82%.
What is John's z-score and percentile?To get John's z-score, we will use the formula: z = (x - μ) / σ
Data
x = John's score (79)
μ = mean score (73)
σ = standard deviation (8)
z = (79 - 73) / 8
z = 6 / 8
z = 0.75.
To find John's percentile, we can use a standard normal distribution table or calculator.
The percentile represents the percentage of scores that fall below a given value. Using standard normal distribution table, we find that a z-score of 0.75 equals to percentile of 77.82%.
Full question:
The scores on a math test have a mean of 73 points and a standard deviation of 8 points. John scores a 79 on the test. Convert this score to a z-score and a percentile..
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R.I.P you will forever be missed❤️❤️
Answers
Answer: RIP =(
Step-by-step explanation: Whoever she is will be missed and will rest in peace, peacfully =3
PLZZZZZZ HELP ME WITH THIS I WILL GIVE 100 POINTS IF THE ANSWER IS WELL EXPLAINED PLZZZZ HELP!!!!!
Show your WORK PLZ
Anna is writing a computer game program. She needs to “move” a square 2 units to the left and 3 down by applying a translation rule to the coordinates of the vertices. The square is aligned with the coordinate axes with one corner of the pre-image square at the origin and the diagonally opposite corner at (4,4). After the transformation what will be the coordinates of the image of each of the four vertices.
A. Write the transformation rule for this particular translation. Use the format given in class.
B. Show the math work that is used to calculate the new coordinates mathematically. State the final coordinate pairs. There should be four pairs of coordinates.
C. Graph, sketch, or draw a picture of the situation. Sketch (on a grid) the pre-image and image of the square. Be sure to include the line segments that form the sides of the square. You MUST label all eight coordinate pairs on your sketch or graph. (You may use Desmos or graph paper for this part. You may even include a link to your Desmos graph.)
Answers
The original square has one verticles at the origin, which is at (0,0), and the opposite corner at (4,4), we draw the square show below:
The transformation is moving each verticles 2 unit left and 3 units down.
In term of x-axis translation (horizontal transformation), we move 2 units left or, -2.In term of y-axis translation ( vertical transformation), we move 3 units down, or -3.The tranformation rulw can be written as:
\(x = x - 2 \\ y = - 3\)
From the graph shown above, we write the 4 cordinate pairs:
(0,0)
(4,0)
(4,4)
(0,4)
Aplying the transformation rule, we subtract 2 from x cordinate and subtract 3 from each y cordinate.
The new transformed cordinate are:
(0,0) >>>>>> (0-2, 0-3) >>>>>>> (-2, -3)
(4,0) >>>>>> (4-2, 0-3) >>>>>>> (2, -3)
(4,4) >>>>>> (4-2, 4-3) >>>>>>> (2, 1)
(0,4) >>>>>> (0-2, 4-3) >>>>>>> (-2, 1)
We name the first four cordinates A,B,C and D, respectively.
The graph ia shown below:
Which of the following is the domain and range of the ellipse with equation x2 + 4y2 – 2x + 16y – 19 = 0?
D: [–1, 5]; R: [–7, 5]
D: [–5, 7]; R: [–5, 1]
D: [–5, 1]; R: [–5, 7]
D: [–7, 5]; R: [–1, 5]
Answers
The option second D: [–5, 7]; R: [–5, 1] is correct the domain is D: [–5, 7], and the range is R: [–5, 1]
What is an ellipse?An ellipse is a locus of a point that moves in a plane such that the sum of its distances from the two points called focus adds up to a constant. It is taken from the cone by cutting it at an angle.
We have an ellipse equation:
\(\rm x^{2}+4y^{2}-2x+16y-19=0\)
We can write the above equation as:
\(\rm \dfrac{\left(x-1\right)^{2}}{36}+\dfrac{\left(y+2\right)^{2}}{9}=1\)
The domain will be:
D: [–5, 7]
The range will be:
R: [–5, 1]
Thus, the option second D: [–5, 7]; R: [–5, 1] is correct the domain is D: [–5, 7] and the range is R: [–5, 1]
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What is a good way to solve division problems?
Answers
Solution
To solve division problems you can make equal groups
Example
\(\frac{8}{2}\)It is
\(\frac{8}{2}=4\)
Rosa and Micah are playing a game . Which table is the closest to showing Rosa winning approximately plays ? 3/5 of the times she
Answers
Answer:
A is the closest
Two friends are renting a property with a monthly rent of $975.00. The total square footage is 1,225 square feet, the first bedroom is 150 square feet, and the second bedroom is 130 square feet. Determine how much the friend with the smaller bedroom will pay for rent if they split the cost based on the square footage of each bedroom. (2 points)
$479.50
$481.35
$495.50
$501.35
Answers
Answer:
(a) $479.50
Step-by-step explanation:
You want to know how much the friend with the smaller bedroom will pay for rent if they split the $975 cost based on the square footage of each bedroom. The two bedrooms in the 1225 square foot property are 130 and 150 square feet.
SplitApparently, the cost of the non-bedroom area is to be split evenly. That common area is ...
1225 ft² -(150 +130) ft² = 945 ft²
Then the proportion due from the occupant of the smaller bedroom is ...
(945/2 +130)/1225 = 241/490 ≈ 0.49184
RentThat fraction of the rent is ...
0.49184 · $975 = $479.54
The nearest answer choice is $479.50.
__
Additional comment
If we were to assume the split is based only on bedroom size, then the rent paid for the 130 ft² space would be (13/28)($975) ≈ $452.68. This would be equivalent to splitting the rent for the common area in the same proportion as for the bedrooms.
We note that half the rent is $487.50, a number less than either of the last two answer choices. Those can be rejected for that reason. (The smaller bedroom is expected to pay less than half of the rent.)
Find QR: 3x+22=10x-41
Answers
Answer:
x=9
Step-by-step explanation:
subtract 22 from both sides, simplify 3x = 10x-63, subtract 10x from both sides of the equation, simplify -7x = -63, divide both sides of the equation by the same factor -7x/-7 = -63/-7, then simplify
The value of the variable 'x' is 9. Then the length of the side QR will be 49 units.
What is the triangle?The polygonal shape of a triangle has a number of sides and three independent variables. Angles in the triangle add up to 180 °.
The ratio of the matching sides will remain constant if two triangles are comparable to one another.
The triangles ΔQPR and ΔQRS are congruent triangles. Then the corresponding sides will be equal. Then the equation is given as,
PQ = QR
3x + 22 = 10x - 41
Simplify the equation, then we have
10x - 41 = 3x + 22
10x - 3x = 22 + 41
7x = 63
x = 63 / 7
x = 9
The length of the side QR is given as,
QP = 10 (9) - 41
QP = 90 - 41
QP = 49
The value of the variable 'x' is 9. Then the length of the side QR will be 49 units.
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SCALCET8 3.10.025. Use a linear approximation (or differentials) to estimate the given number. (Round your answer to five decimal places.) 3 126
Answers
Answer:
\(f(126) \approx 5.01333\)
Step-by-step explanation:
Given
\(\sqrt[3]{126}\)
Required
Solve using differentials
In differentiation:
\(f(x+\triangle x) \approx f(x) + \triangle x \cdot f'(x)\)
Express 126 as 125 + 1;
i.e.
\(x = 125; \triangle x = 1\)
So, we have:
\(f(125+1) \approx f(125) + 1 \cdot f'(125)\)
\(f(126) \approx f(125) + 1 \cdot f'(125)\)
To calculate f(125), we have:
\(f(x) = \sqrt[3]{x}\)
\(f(125) = \sqrt[3]{125}\)
\(f(125) = 5\)
So:
\(f(126) \approx f(125) + 1 \cdot f'(125)\)
\(f(126) \approx 5 + 1 \cdot f'(125)\)
\(f(126) \approx 5 + f'(125)\)
Also:
\(f(x) = \sqrt[3]{x}\)
Rewrite as:
\(f(x) = x^\frac{1}{3}\)
Differentiate
\(f'(x) = \frac{1}{3}x^{\frac{1}{3} - 1}\\\)
Using law of indices, we have:
\(f'(x) = \frac{x^\frac{1}{3}}{3x}\)
So:
\(f'(125) = \frac{125^\frac{1}{3}}{3*125}\)
\(f'(125) = \frac{5}{375}\)
\(f'(125) = \frac{1}{75}\)
So, we have:
\(f(126) \approx 5 + f'(125)\)
\(f(126) \approx 5 + \frac{1}{75}\)
\(f(126) \approx 5 + 0.01333\)
\(f(126) \approx 5.01333\)
Which relationship can be represented by the equation y = 1/5x A) One wager jug hold 5 quarts. Let x represent the number of water jugs and y represent the number of quartsB) Bananas are on sale for $0.20 per banana. Let x represent the number of bananas and y represent the total cost, in dollars.C) David runs ar a constant rate. He runs 15 mines in 3 hours. Let x represent the number of hours and y present the number of miles.D) For every 10 gallons of water, Jasmine adds 2 cups of soap. Let x represent the number of hours and y represent the number of miles.E) The library charges a few at a rate of $5 for every 10 days a book is late. Let x represent the number of days late and y represent the fee, in dollars.
Answers
Answer:
Explanation:
Option A
\(\begin{gathered} \text{One wager jug hold 5 quarts} \\ y=kx \\ 5=1k \\ y=5x \end{gathered}\)Option B
\(\begin{gathered} 1\text{ banana costs \$}$0.20$ \\ y=0.20x \\ y=\frac{1}{5}x \end{gathered}\)The correct choice is B.
QUESTION ON PIC ILL GIVE BRAINLY ⚠️
Answers
Answer:
78.5 square ft
Step-by-step explanation:
The formula of the area is πr^2.
We can find the radius by dividing the diameter by 2.
10/2=5
We know π=3.14.
Now we can plug the given information into the formula and find the area.
3.14*5^2=
3.14*25=
78.5
kira,boris,deshuan have a total of $119 in their wallets. Boris has 3 times waht deshuan has. Deshuan has $6 more than kira. How much do they have in their wallets.
Answers
Kira has $19, Boris has $75, and Deshuan has $25.
How much money does each person have in their wallets?We will denote as follows:
Kira has as K, Boris has as B, and Deshuan has as D.From information, we can set up equations:
B = 3D (Boris has 3 times what Deshuan has)
D = K + 6 (Deshuan has $6 more than Kira)
K + B + D = 119 (The total amount of money they have is $119)
Substituting equation 2 into equation 1, we have:
B = 3(K + 6)
Substituting equations 1 and 2 into equation 3:
K + 3(K + 6) + (K + 6) = 119
K + 3K + 18 + K + 6 = 119
5K + 24 = 119
5K = 119 - 24
5K = 95
K = 95 / 5
K = 19
Using equation 2, we can find D:
D = K + 6
D = 19 + 6
D = 25
Using equation 1, we can find B:
B = 3D
B = 3 * 25
B = 75.
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Please help me ...............,..
Answers
Answer:
Angle A and H are Alternate exterior angles and they are congruent.
the correct answer.
Which inequality represents the values of that ensure triangle ABC exists?
A
2x+4
B
O D.
18
OA.
<< 1
OB. -< < ¹
O c. 1 < x < 5
6x
2 < < 6
Answers
The Inequality which ensure triangle exists is A. 7/4 < x < 11/2
What is the inequalityInequality is defined as the relation between two quantities with the sign of inequality that is >, <, ≤ , ≥ ."
Inequalities are simply created through the connection of two expressions. In this case, it should be noted that the expressions in an inequality are not always equal.
Theorem used In ΔABC,
AB + BC >AC
AC+ BC >AB
AC + AB > BC
According to the question,
In triangle ABC.
AC = 18units
BC = 6x units,
AB = 2x + 4 units
Substitute the value in the inequality to ensure triangle exists we get 7/4 < x < 11/2. The correct option is A.
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Help Quickly! A truck needs 7 gallons of fuel to travel 56 miles. Can the truck travel 48 miles with 6 gallons of fuel? Explain.
Giving brainliest
Answers
Yes, 7/56 and 6/48 are proportional because 7×48 = 56×6. Therefore, the correct answer is option B.
Given that, a truck needs 7 gallons of fuel to travel 56 miles.
The truck travel 48 miles with 6 gallons of fuel.
Here, the proportion is
7:56::6:48
We know that, the proportion is product of extremes = product of means
7×48 = 56×6
336 = 336
Therefore, the correct answer is option B.
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Just a little made up question (20 points). Jack had drunken 120 water bottles in a year. His friend Sam had drunk 98, And Archy had drunk 150. What is the amount of water bottles they drunk altogether?
Answers
Christiane runs for 2.5 kilometers every day. After 7 days, how many meters has Christiane
Answers
Answer:
NEYO
Step-by-step explanation:
Answer:
17500 meters
Step-by-step explanation:
2.5 x 7
(Kilometers x 7 days)
17.5 x 1000
((2.5 x 7) x converting kilometers into meters)
17500
What is four fifths divided by two thirds?
Answers
Answer:6/5 or 1.2
Step-by-step explanation:
4/5 divided by 2/3
=4/5 *3/2
=12/10
=6/5
=1.2
Plz help me well mark brainliest if you are correct!.
Answers
Answer:
Option D. -1 and 0
Step-by-step explanation:
Answer:
D. -1 and 0
Step-by-step explanation:
The number is not a mixed number or improper so it is going to be less than one.
mean of 130,132,139,139,141,148,148,150,152,157,157,157,158,159,160,162,160,167,167,172,171,175,178,179,185
Answers
Answer:
157.72
i think. sorry if it's not correct
зv - 5 = 40Answer please ?
Answers
What is the range of the data below?
A: 22
B: 28
C: 41
D: 42
Answers
Answer:
20
Step-by-step explanation:
42 is the biggest and the smallest is 22 so 42-22 = 20!
Find the equation of the line passing through the points (40,0) and (20,-2). Write your answer in the form
y=mx+b.
Answers
\((\stackrel{x_1}{40}~,~\stackrel{y_1}{0})\qquad (\stackrel{x_2}{20}~,~\stackrel{y_2}{-2}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{\textit{\large rise}} {\stackrel{y_2}{-2}-\stackrel{y1}{0}}}{\underset{\textit{\large run}} {\underset{x_2}{20}-\underset{x_1}{40}}} \implies \cfrac{ -2 }{ -20 } \implies \cfrac{ 1 }{ 10 }\)
\(\begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{0}=\stackrel{m}{ \cfrac{ 1 }{ 10 }}(x-\stackrel{x_1}{40})\implies {\Large \begin{array}{llll} y=\cfrac{1}{10}x+4 \end{array}}\)
Sandy had $4.66 in a jar. She then took three $1 bills and 1 dime out of the jar. How much money is in the jar now?
Answers
Answer:
$3.56
Step-by-step explanation:
Answer:
1.55
Step-by-step explanation:
4.66 - $3 = 1.66
A dime is 10c so
1.66 - 0.10 = 1.55