Patriciana has (20/9) nickels and (80/9) dimes of coins .
Evaluation for the number of dimes and nickels.There are 5 cents in a nickel and 10 cents in a dime.
Let the number of number of nickels be represented by the letter x, so that the number of dimes Patriciana has will be 4x.
So, 5x cents + 10 × 4x cents = 100 cents
5x cents + 40 cents = 100 cents
45x cents = 100 cents
divide through by the coefficient of x
x = 100cents/45cents
x = 20/9 by simplification,
and the number of dimes is calculated by putting 20/9 for x in 4x.
Hence, the number of dimes is 4(20/9) = 80/9 and that of nickels is 20/9.
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The function g(x) is defined by the equation g(x) = -3x² + x - 1.
Which is the value of g(1)?
Answer:
-3
Step-by-step explanation:
g(1) = -3x² + x - 1
= -3(\(1^{2}\)) + 1 -1
= -3(1) + 1 - 1
= -3 +1 -1
g(1) = -3
Just put the 1 everywhere you see an x.
Solve
Solve the equation 12(16x – 6) = 2.
Answer:
x =37/96 or x = 0.385416
Step-by-step explanation:
12 (16x - 6) = 2
6 (16x - 6) = 1
96x - 36 = 1
96x = 1 + 36
96x = 37
Convert the following into set builder notation. a1=1.a n =a n−1 +n; a1=4.an =4⋅an−1 ;
We are given two recursive sequences:
a1=1, an=an-1+n
a1=4, an=4⋅an-1
To express these sequences using set-builder notation, we can first generate terms of the sequence up to a certain value of n, and then write them in set notation. For example, if we want to write the first 5 terms of the first sequence, we have:
a1 = 1
a2 = a1 + 2 = 3
a3 = a2 + 3 = 6
a4 = a3 + 4 = 10
a5 = a4 + 5 = 15
In set-builder notation, we can express the sequence {a_n} as:
{a_n | a_1 = 1, a_n = a_{n-1} + n, n ≥ 2}
Similarly, for the second sequence, the first 5 terms are:
a1 = 4
a2 = 4a1 = 16
a3 = 4a2 = 64
a4 = 4a3 = 256
a5 = 4a4 = 1024
And the sequence can be expressed as:
{a_n | a_1 = 4, a_n = 4a_{n-1}, n ≥ 2}
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Hey guys I have a question why am I crying for one of my favorite teachers leaving for a little bit it is 5 months he is one of my favorite teachers and Bastia I am one of his best students I don’t know why I crying when he told me he was leaving for 5 months… How do I stop crying!!!
Answer:
Well you could think positive:
1: He will come back
2: He will be happy to see you
3: He deserves a good vacation after teaching
5: Think that you are happy that he is not leaving forever
If I would ever really like a teacher and he would be my favorite I would cry as well even if he left for 5 months only. it is okay to cry as well and think of your teacher and keep a smile on your heart. =)
Step-by-step explanation:
Please help this is my last one
Answer:
2 is corresponding angles
3 is alternate interior angles
4 is sum of angles
Which number sentence below matches this word problem? Jay had to paint part of the outside of his house. He spent 7 hours painting one side and 11 hours painting another. How long did it take him to paint both sides?
A. 11 - 7 = 4
B. 7 + 11 = 18
C. 11 × 7 = 77 D. 77 7 = 11
Answer:
B! 7+11= 18
Step-by-step explanation:
Answer:
answer: a
Step-by-step explanation:
Meranda works for 7 hours at $10.25 per hour. How much does she earn?
lll71.75 ......
lol.
Choose the correct simplification of the expression (xy^2z)^3
x^3y^5z^3
x^3y^6z^3
xy^5z
xy^6z
Answer:
xy^6z
Step-by-step explanation:
Find a formula for a n
that satisfies the recursive definition. a n
={ 1
n−1
n+1
a n−1
when n=1
when n>1.
) Prove by induction on n that ∑ k=1
n
(k−1) 3
= 4
n 2
(n−1) 2
. ) Prove by induction on n that ∑ k=1
n
k 2
1
≥ 2
3
− n+1
1
. Prove by induction on n that ∑ k=1
n
k 2
1
≥ 2
3
− n+1
1
.
By applying mathematical induction, we can establish the validity of the recursive formula and the summation formulas for all positive integers n.
For the first part, to find a formula for a recursive definition, we can use the given conditions: a_n = (1/(n-1))(n+1)a_(n-1) for n > 1 and a_1 = 1. By recursively applying this formula, we can determine the value of a_n for any positive integer n.
For the second part, to prove the summation formula \(∑(k=1 to n) (k-1)^3 = (4n^2(n-1)^2)/6\), we can use mathematical induction. We establish the base case for n=1, where the formula holds true, and then assume the formula holds for some positive integer k. By using this assumption and the induction hypothesis, we can prove that the formula holds for k+1 as well.
The third part of the question involves proving the inequality \(∑(k=1 to n) k^2 ≥ (2/3) - (n+1)/2.\) We again use mathematical induction by establishing the base case for n=1, where the inequality holds true, and assuming it holds for some positive integer k. By using this assumption and the induction hypothesis, we can prove that the inequality holds for k+1 as well.
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Three consecutive odd integers are such that the square of the third integer is 153 less than the sum of the squares of the first two One solution is -11,-9, and -7. Find three other consecutive odd integers that also sately the given conditions What are the integers? (Use a comma to separato answers as needed)
the three other consecutive odd integer solutions are:
(2 + √137), (4 + √137), (6 + √137) and (2 - √137), (4 - √137), (6 - √137)
Let's represent the three consecutive odd integers as x, x+2, and x+4.
According to the given conditions, we have the following equation:
(x+4)^2 = x^2 + (x+2)^2 - 153
Expanding and simplifying the equation:
x^2 + 8x + 16 = x^2 + x^2 + 4x + 4 - 153
x^2 - 4x - 133 = 0
To solve this quadratic equation, we can use factoring or the quadratic formula. Let's use the quadratic formula:
x = (-b ± √(b^2 - 4ac)) / (2a)
Plugging in the values a = 1, b = -4, and c = -133, we get:
x = (-(-4) ± √((-4)^2 - 4(1)(-133))) / (2(1))
x = (4 ± √(16 + 532)) / 2
x = (4 ± √548) / 2
x = (4 ± 2√137) / 2
x = 2 ± √137
So, the two possible values for x are 2 + √137 and 2 - √137.
The three consecutive odd integers can be obtained by adding 2 to each value of x:
1) x = 2 + √137: The integers are (2 + √137), (4 + √137), (6 + √137)
2) x = 2 - √137: The integers are (2 - √137), (4 - √137), (6 - √137)
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help me solve this question fast
Answer:
This is the answer
please give me a nice rating
The prooof that the parallelograms ABCD and FBCE are congruent is shown below
Proving that the parallelograms are congruentGiven that
AE || BC, AB || DC and BF || CE
The above means that the above segments are parallel segments
Parallel sides of a parallelogram are equal
This means that
AB = DC and BF = CE
In quadrilateral FBCE, we have
FE = BC
In quadrilateral ABCD, we have
AD = BC
By substitution property, we have
AD = BC = FE
We have proved that two corresponding sides of the two parallelograms are congruent
This means that, the other sides must also be congruent
So, we have
AB = BF = DC = CE
Hence, the parallelograms are congruent
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Assume you have a normal distribution with a mean of 65 and a standard deviation of 13. Find the Z-Score of 72, rounding your answer to the nearest HUNDREDTH.
STEP - BY - STEP EXPLANATION
What to find?
The z- score of 72
Given:
mean (μ) = 65
standard deviation (σ) = 13
x = 72
Step 1
Recall the z- score formula.
\(z=\frac{x-\mu}{\sigma}\)Step 2
Substitute the values into the formula and simplify.
\(Z=\frac{72-65}{13}\)\(=0.54\)ANSWER
0.54
Part of a bus timetable is shown below. The average speed of the bus between Hawkes Meadow and Brunswick Street is 29 km/h. Work out how many kilometres the bus travels between these two stops. If your answer is a decimal, give it to 1 d.p.
The distance that the bus travels between Hawkes Meadow and Brunswick Street is; 7.3 km
How to calculate the total distance?The formula for distance here is;
Total distance = Speed * Time
Now, we are given the speed as 29 km/hour
Now, we want to find the total distance between Hawkes Meadow and Brunswick Street.
The time between Hawkes Meadow and Brunswick Street from the attached table is 14:40 - 14:25 = 15 minutes.
Converting to hours = 15/60 = 1/4 hours
Thus;
Total distance = 29 * 1/4 ≈ 7.3 km
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In a sample of 300 skittles taken from this 54 oz bag, 72 of the skittles were observed to be purple. What is the value of p-hat (the sample proportion)?.
The value of p-hat (the sample proportion) is 0.24, or 24% if total number of skittles in a sample is 300 out of which 72 skittles are purple.
The sample proportion, denoted by p-hat, is the proportion of purple skittles in the sample. We can calculate p-hat by dividing the number of purple skittles by the total number of skittles in the sample
p-hat = number of purple skittles / total number of skittles in sample
In this case, we have
Number of purple skittles = 72
Total number of skittles in sample = 300
Therefore,
p-hat = 72/300 = 0.24
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Dice A and dice B have ten sides. What is the probability of rolling and odd number with both dice A and B?
The probability of rolling and odd number with both dice A and B is 1/4.
What is probability?Probability simply means the likelihood that an event will occur on a scenario.
Since Dice A and dice B have ten sides,the numbers will be from 1 to 10. Therefore, there are 5 even numbers and 5 odd numbers.
Probability of odd number = 5/10 = 1/2
Probability of even number = 5/10 = 1/2
Probability of rolling both odd numbers will be:
= P(odd) × P(odd)
= 1/2 × 1/2
= 1/4
The probability is 1/4.
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Write the number as a percent.
1/5
Answer:
1/5 = 20%
Step-by-step explanation:
Let x be the percentage.
\(\frac{1}{5} * \frac{x}{100}\)
100 = 5x Cross multiply
x = 20%
Hope this helps!
Answer: 20%
Step-by-step explanation: 1/5=0.2 0.2x100=20 20%
Tell whether the following postulate or property of plane Euclidean geometry has a corresponding statement in spherical geometry. If so, write the corresponding statement. If not, explain your reasoning.
Perpendicular lines form four 90° angles.
The postulate does not have a corresponding statement in spherical geometry due to the different geometric properties of the two systems.
In plane Euclidean geometry, the postulate states that perpendicular lines form four 90° angles. In spherical geometry, there is no corresponding statement to this postulate. Spherical geometry is based on the surface of a sphere, where lines are great circles. In this geometry, perpendicular lines do not exist. The reason for this is that on a sphere, all lines eventually meet at the poles, forming angles greater than 90°. Hence, the concept of perpendicular lines forming four 90° angles does not apply in spherical geometry. This explanation provides an overview of the differences between perpendicular lines in plane Euclidean geometry and spherical geometry.
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HELP PLS ITS BEEEN AN HOUR im going to cry ):
Answer: Don't cry please you'll be okay.
Step-by-step explanation:
What is the percentage of sugar in the concentration. a syrup made of 10 kg of water and 4 kg of sugar?
HEEELPLLPL!!!!!! QUICCKCKKCK
and brainiest !!!!
The percentage of the sugar in the concentration is 28.57%.
What is Percentage?Percentage is defined as the parts of a number per fraction of 100.
We have to divide a number with it's whole and then multiply with 100 to calculate the percentage of any number. It is usually denoted by the symbol '%'.
Given that,
A syrup is made of 10 kg of water and 4 kg of sugar.
Weight of water = 10 kg
Weight of sugar = 4 kg
Total weight of the mixture = 14 kg
Fractional content of sugar = 4 / 14 = 0.2857
Percentage of sugar in the concentration = 0.2857 × 100 = 28.57%
Hence 28.57% of sugar is in the concentration.
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A 4-column table with 4 rows. Column 1 is labeled x. Column 2 is labeled y. Column 3 is labeled x + y = 56. Column 4 is labeled 2 x minus 7 = y. All rows are blank. Using the guess and check technique, find two numbers that satisfy both conditions. The sum of the two numbers is 56. The second number is seven less than two times the first number. What is the value of the first number, x? 19 21 31 35
Answer:
B. 21
Step-by-step explanation:
I just got it correct on edge 2021.
Also:
12 x 2 = 42
42 - 7 = 35
35 + 21 = 56
Answer:
21
Step-by-step explanation:
A survey by Men's Health magazine stated that 15% of all men said that they used exercise to relieve stress. A random sample of 100 men was selected, and 12 said that they used exercise to relieve stress. Use the P-value method to test the claim. Use α =0.10. There is not enough information to draw a conclusion. No. There is enough evidence to reject the claim that the percentage of men who use exercise to relieve stress is 15%. Yes. There is not enough evidence to reject the claim that the percentage of men who use exercise to relieve stress is 15%.
Yes. There is not enough evidence to reject the claim that the percentage of men who use exercise to relieve stress is 15%.
To test the claim, we need to use a hypothesis test with the null hypothesis being that the percentage of men who use exercise to relieve stress is 15% and the alternative hypothesis being that it is not 15%. Using the given information, we can calculate the sample proportion to be 0.12. Then, using a normal approximation to the binomial distribution with a standard error of sqrt(0.15*0.85/100) = 0.0387, we can calculate the test statistic to be (0.12 - 0.15)/0.0387 = -0.773.
Using a significance level of 0.10, the critical value for a two-tailed test is ±1.645. Since the test statistic is not less than -1.645 or greater than 1.645, we fail to reject the null hypothesis and conclude that there is not enough evidence to reject the claim that the percentage of men who use exercise to relieve stress is 15%.
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paige mows 1/8 acre in 1/4 hour.How many acres does paige mow per hour?
We know that Paige mows 1/8 acre in 1/4 hour
We know that there are 60 minutes in an hour
We know that 1/4 of an hour is 15 minutes
W can divide 60 by 15 to find out how many times Paige can mow 1/8 acres of land in an hour.
\(60/15=4\)
She can mow 1/8 acres of land 4 times in an hour. All we need to do now is multiply 1/8 by 4 to find the total amount of acres she can mow in an hour.
\(\frac{1}{8} *4=\frac{1}{2}\)
Paige can mow 1/2 acre of land per hour
The flower shop displays a different number of roses in the front window every month. It displayed 25 roses in November, 75 roses in December, 225 roses in January, and 675 roses in February. What kind of sequence is this?
Answer: 50 is added each time
Answer:
arithmetic or geometric
and 50 are added each time.
Step-by-step explanation:
Dora says that of all the possible rectangles with the same area, the rectangle with the largest perimeter will have two side lengths that are 1 unit does her sentment make sense?
Answer:
maybe
Step-by-step explanation:
Dora is apparently assuming the dimensions are integers. In that case she is correct.
If the dimensions are unconstrained, the perimeter will be largest when a pair of opposite sides will be the smallest measure allowed.
For some perimeter P and side length x, the area is ...
A = x(P/2 -x)
Conversely, the perimeter for a given area is ...
P = 2(A/x +x)
This gets very large when x gets very small, so Dora is correct in saying that the side lengths that are as small as they can be will result in the largest perimeter. We have no way of telling if her assumption of integer side lengths is appropriate. If it is not, her statement makes no sense.
What is 1/2 + 10 equal?
Answer:
10 1/2
Step-by-step explanation:
Question 2 For the following matrix Then [340]
A= [-127]
[-2-44]
(Please use a comma between two numbers.)
(a) The minors M13, M23, M33= 8,-4,10
(b)The cofactors C13, C23,C33= 8,4,10 (c) The determinant det(A) = 68
For the given matrix A, the minors M13, M23, M33 are 8, -4, and 10 respectively. The cofactors C13, C23, C33 are 8, 4, and 10 respectively. The determinant det(A) is 68.
To find the minors of a matrix, we need to find the determinants of the submatrices obtained by removing the row and column corresponding to the element of interest. In this case, the minors M13, M23, and M33 correspond to the determinants of the 2x2 submatrices obtained by removing the first row and the third column, second row and third column, and third row and third column, respectively.
To find the cofactors, we multiply each minor by a positive or negative sign based on its position in the matrix. The signs alternate starting with a positive sign for the top left element. In this case, the cofactors C13, C23, and C33 correspond to the minors M13, M23, and M33 respectively.
Finally, the determinant of a 3x3 matrix can be found by using the formula det(A) = a11C11 + a12C12 + a13C13, where a11, a12, and a13 are the elements of the first row of the matrix and C11, C12, and C13 are their corresponding cofactors. In this case, the determinant det(A) is 68.
Therefore, the minors M13, M23, M33 are 8, -4, and 10 respectively. The cofactors C13, C23, C33 are 8, 4, and 10 respectively. And the determinant det(A) is 68.
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pls help really need it
In the pic. Hope this helps. Have a good day! Pls give brainliest if possible.
Simplify.
78+(−23)56
Enter your answer as fraction in simplest form by filling in the boxes.
Answer:
- 1210
Step-by-step explanation:
According to BODMAS / PEMDAS rule, we will do multiplication first and then subtraction . So -23 * 56 = -1288 and then the subtraction , 78 + (-1288) =78-1288= -1210
The fraction should be -1210 / 1
Answer:
actaully its 1/4
Step-by-step explanation:
the cost of the items in mindy's shopping cart is 67.39 if the sales tax applied to her purchase is 5% what is the total cost of the items in her cart?
Answer:
$70.76 or 70.7595
Step-by-step explanation:
Here’s the function:
67.39(1+0.05)^1
Hope this helps! ;-)
Which method will NOT get you to the point (4,3.5)
?
On a coordinate plane, a point is at (4, 3.5).
CLEAR CHECK
Starting at the origin, go 3.5
spaces to the right and then 4
spaces up.
Starting at the origin, go 3.5
spaces up and then 4
spaces to the right.
Starting at the origin, go 4
spaces to the right and then 3.5
spaces up.
Put one finger on 4
on the x
-axis, and put another finger halfway between 3
and 4
on the y
-axis. Move the first finger up and the second finger to the right until they meet.
NEXT
CLOSE
Reference
calculator
formulas
glossary
CLOSE
Language
Changes the language of the audio snippets and the glossary
ENGLISH
Answer:
The first one
Step-by-step explanation: