In a class of c child, ¾ are boys. How many of them are girls?
Answers
Answer:
I'm going to say that there is one girl in the class
Related Questions
Please help, I don’t understand.
Answers
To find the answers, you basically have to use trial and error. I'm not sure how else to find them.
Anyways, grouping up "6+12" as one group and "2^2-2+1" as the other leads to
\((6+12) \div (2^2-2+1) = 18 \div 3 = 6\)
-----------------------------
For the next problem, you'll need 2 sets of parenthesis, but this time one set of parenthesis is inside another one. The (6+12) becomes 18, which divides by 2 to get 9. Squaring that leads to 81 and then you subtract off 1 to get 80.
\(( (6+12) \div 2)^2 - 2 + 1 = (18\div 2)^2 - 1 = 9^2-1 = 81-1 = 80\)
Help please
What is 20000 x 0
Answers
Answer:
its 0
Step-by-step explanation:
Choose the correct answer
Answers
Answer: it should be d pretty sure
Step-by-step explanation:
Subtract 9x2 – 10x + 1 from —2x2 + 4x – 10.
Answers
Step-by-step explanation:
9x^2 - 10x +1 - (-2x^2) + 4x - 10.
The opposite of -2x^2 is 2x^2
9x^2 -10x+1+2x ^2 +4x-10
Combine 9x^2 and 2x^2 to get 11x^2 .
11x^2 -10x+1+4x-10
Combine -10x and 4x to get -6X.
11x^2-6x+1-10
Subtract 10 from 1 to get -9.
11x^2 -6x-9
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A garden center has 150 fruit trees to sell.
1/10 of the trees are lemon trees.
2/5 of the trees are orange trees.
1/3 of the trees are peach trees.
The rest are pear trees.
How many trees are pear trees?
Answers
Step-by-step explanation:
Take pear trees be X
1/10+2/5+1/3+x=150 (Take LCM of 10,5,3=30)
3/30+12/30+10/30+30x/30= 150
25/30+30x/30=150
25+x=150/30
X=5-25=-20 are pear trees
hope it helps
A company must pay a $305,000 settlement in 5 years. (a) What anount must be deposited now at 4% compounded semiannually to have enough money for the settlement? (b) How much interest will be earned? (c) Suppose the corrpany can deposit onily $200,000 now. How much more will be needed in 5 years? (d) Suppose the compary can deposit $200,000 now in an account that pays interest continuously. What interest rate would they need to accumulate the entre $305,000 in 5 years?
Answers
To calculate the necessary amount to be deposited now and determine the interest earned in various scenarios, we can utilize the formulas and concepts related to compound interest.
a) To determine the amount that must be deposited now at a 4% interest rate compounded semiannually, we can use the formula for compound interest:
A = P(1 + r/n)^(nt)
Where A is the future value, P is the principal amount, r is the interest rate, n is the number of compounding periods per year, and t is the number of years.
Plugging in the given values, we have:
A = $305,000
r = 4% = 0.04
n = 2 (semiannually compounded)
t = 5 years
Solving for P:
$305,000 = P(1 + 0.04/2)^(2*5)
Simplifying the equation, we find that the amount to be deposited now is approximately $259,282.63.
b) To calculate the interest earned, we subtract the principal amount from the future value:
Interest = A - P = $305,000 - $259,282.63 = $45,717.37
Therefore, the interest earned is approximately $45,717.37.
c) If the company can only deposit $200,000 now, we can subtract this amount from the required future value:
Additional amount needed = $305,000 - $200,000 = $105,000
Therefore, an additional amount of $105,000 will be needed in 5 years.
d) To determine the interest rate needed for continuous compounding with a $200,000 deposit, we use the formula:
A = Pe^(rt)
Where e is the base of the natural logarithm.
Plugging in the given values:
$305,000 = $200,000 * e^(r*5)
Simplifying the equation, we find:
e^(5r) = 305,000/200,000
Taking the natural logarithm of both sides and solving for r, we can find the interest rate required for continuous compounding.
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why are handcuffs like souvenir?
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Answer:Handcuffs are sometimes sold as souvenirs because they are often associated with law enforcement and can be seen as a symbol of authority and justice. Many people find them interesting or intriguing because of their association with police officers and the justice system.
Additionally, handcuffs have a unique and recognizable design, and can be made from high-quality materials, which makes them attractive as novelty items or collectibles. Some people may also find them useful as a prop for costumes or theatrical productions.
However, it's worth noting that handcuffs are primarily designed for use in law enforcement and should not be used for any unlawful or unethical purposes. It's important to handle them responsibly and with respect for their intended purpose.
Step-by-step explanation:
Which of the following numbers is irrational?
0.13
✓3
-0.3
Answers
a vendor sells specialty shirts to sports teams for $13 each. a soccer team has $321 to spend on shirts. what is the greatest number of shirts the soccer team can purchase?
Answers
Applying division by successive subtraction method, the maximum number of shirts that can be bought is 24. Below is the solution algorithm.
Algoritmo maximumNumberOfTshirts // define variablesDefinir p,quotient,remainder Como Real
p <- 13 // T-shirt price
quotient <- 0 // Number of T-shirts
remainder <- 321 // available money
// Calculate the maximum number of T-shirts can be bought with 321$ (division by successive subtraction method)Repetir
remainder <- remainder-p
quotient <- quotient+1
Hasta Que remainder<p
// Displaying resultsEscribir 'Maximum number of T-shirts: ',quotient
FinAlgoritmo
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In the diagram below, what is the measure of angle x?
Answers
Answer: C - 105
Step-by-step explanation:
75+75=150
360-150=210
210/2=105
t the movie theatre, child admission is and adult admission is . on wednesday, twice as many adult tickets as child tickets were sold, for a total sales of . how many child tickets were sold that day?
Answers
The number of child ticket were sold on Wednesday is 236
The cost of child admission ticket = $6.10
The cost of adult admission ticket = $9.20
Consider the number of child ticket as x and the number of adult ticket as y
Twice times as many adult tickets as child tickets were sold
y = 2x
Then the equation will be
x + y = 707.70
Substitute the value of y in the equation
x + 2x = 707.70
Add the like terms
3x = 707.70
x = 707.70/3
Divide the terms
x = 235.9
x ≈ 236
Therefore, 236 child ticket were sold on that day
I have answered the question in general, as the given question is incomplete
The complete question is:
At the movie theatre, child admission is $6.10 and adult admission is $9.20 . On Wednesday, twice times as many adult tickets as child tickets were sold, for a total sales of $707.70 . How many child tickets were sold that day?
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Solve the equation
2x²+ 8x - 1 = 0
by completing the square.
Give your answers correct to 2 decimal places.
Answers
Answer:
x = 0.08
Step-by-step explanation:
2x²+ 8x - 1 = 0
4x + 8x - 1 = 0
12x - 1 = 0
Add 1 to the -1 and to the 0 too
12x = 1
Divide both side
x = 0.08
HELP i ned help with this please
Answers
The length of BR is 40 cm.
What is a triangle?It is a two-dimensional figure which has three sides and the sum of the three angles is equal to 180 degrees.
We have,
YN is parallel with BR.
Triangle HYN is congruent with Triangle HBR.
HN = 5 cm
NR = 15 cm
YN = 10 cm
Now,
HR = HN + NR
HR = 5 + 15 = 20 cm
YN/HN = BR/HR
10/5 = BR/20
2 = BR/20
BR = 20 x 2
BR = 40 cm
Thus,
The value of BR is 40 cm.
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Find the APY corresponding to the following nominal rate. 9% compounded quarterly %. The APY is (Type an integer or a decimal. Round to the nearest hundredth as needed.)
Answers
The APY corresponding to a nominal rate of 9% compounded quarterly is approximately 9.31%.
The Annual Percentage Yield (APY) represents the total effective annual rate of return on an investment, taking into account compounding. To calculate the APY, we need to consider the nominal rate and the compounding frequency. In this case, the nominal rate is 9% and the compounding is done quarterly.
To find the APY, we use the formula: APY = \((1 + r/n)^ n-1\), where r is the nominal rate and n is the number of compounding periods per year.
Substituting the given values into the formula, we have: APY = \((1 + 0.09/4)^4 - 1.\)
Calculating this expression, we find: APY ≈ 0.0931 or 9.31%.
Therefore, the APY corresponding to a nominal rate of 9% compounded quarterly is approximately 9.31%. This means that if you invest in an account with this APY, your investment will grow by approximately 9.31% over the course of one year, taking into account the effects of compounding.
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What does |-5| + |7| equal?
Answers
Answer:
2
Step-by-step explanation:
Answer:
2
Step-by-step explanation:
Remember that we're using absolute values. A negative number plus a positive number is the same as a positive number subtracted by another positive number.
What is the answer I need help with this
Answers
Answer:
D
Step-by-step explanation:
Show your steps
Multiply and simplify if possible.
(3−√5)(7−√5)
Answers
The product of (3 - √5)(7 - √5) simplifies to 26 - 10√5.
To multiply and simplify the expression (3 - √5)(7 - √5), we can use the distributive property of multiplication over addition. Here are the steps:
1. Start by multiplying the first terms in each set of parentheses: 3 * 7 = 21.
2. Then multiply the outer terms: 3 * (-√5) = -3√5.
3. Next, multiply the inner terms: -√5 * 7 = -7√5.
4. Finally, multiply the last terms: -√5 * -√5 = 5.
Now we can combine these terms to simplify the expression:
21 + (-3√5) + (-7√5) + 5
Combine the like terms: 21 + 5 - 3√5 - 7√5
Combine the constants: 21 + 5 = 26.
Combine the radical terms: -3√5 - 7√5 = -10√5.
The final simplified expression is: 26 - 10√5.
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Help me answer this. thx
Answers
Step-by-step explanation:
Which one of the following would most likely have a negative linear correlation coefficient? A. the value of a car compared to its age B. the points scored by a basketball player compared to his minutes played C. the height of a woman compared to her age D. the hours of daylight in a city throughout The year
Answers
Answer:
B. the points scored by a basketball player compared to his minutes played
Step-by-step explanation:
Evaluate. 2 > 8 - 4/3h
Answers
Answer: h>9/2
Step-by-step explanation:
Trapezoid ABCD has the following coordinates-A (2, 8), B (6, 8), C (8, 3), and D (1, 3). What are the coordinates of trapezoid A'B'C'D' after a translation of 3 units right and 4 units down?
Answers
Answer: A' ( -1,4) , B' (-4,4), C'( -5 ,-1), D'( -1,-5)
Im not 100% sure its correct, its hard without an image or a picture of the problem
Step-by-step explanation:
Someone explain please
Answers
Answer:
SA = 94 ft²
Step-by-step explanation:
To find the surface area of a rectangular prism, you can use the equation:
SA = 2 ( wl + hl + hw )
SA = surface area of rectangular prism
l = length
w = width
h = height
In the image, we are given the following information:
l = 4
w = 5
h = 3
Now, let's plug in the information given to us to solve for surface area:
SA = 2 ( wl + hl + hw)
SA = 2 ( 5(4) + 3(4) + 3(5) )
SA = 2 ( 20 + 12 + 15 )
SA = 2 ( 47 )
SA = 94 ft²
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The temperature in Austria one morning was -5°C at 08:00 and increased by 2°C every hour until 12:00. What temperature will the temperature be at 11:30?
Answers
From 8:00 to 12:00, the temperature increased by 2°C per hour for a total of 4 hours. Therefore, the temperature has increased by 2°C/hour x 4 hours = 8°C.
Starting from the initial temperature of -5°C at 8:00, the temperature would be:
-5°C + 8°C = 3°C at 12:00
To find the temperature at 11:30, we need to find the temperature halfway between 8:00 and 12:00, which is 10:00. At 10:00, the temperature would have increased by 2°C/hour x 2 hours = 4°C, so the temperature at 10:00 would be:
-5°C + 4°C = -1°C
From 10:00 to 11:30, which is 1.5 hours, the temperature would increase by 2°C/hour x 1.5 hours = 3°C. Therefore, the temperature at 11:30 would be:
-1°C + 3°C = 2°C
Therefore, the temperature in Austria at 11:30 would be 2°C.
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Consider the following relation R 1
and set of functional dependencies F 1
R 1
={A,B,C,D,E,I}
F 1
={A→C,AB→C,C→DI,CD→I,EC→AB,EI→C}
(a) Determine all the candidate keys for the relation R 1
. (b) Find the attribute closure for (ACD) and (BCI) for the relation R 1
. (c) Find the minimal cover(F c
) of the relation R 1
. (d) Decompose the relation R 1
into BCNF form.
Answers
The decomposed relations are R2 (ABCEI), R3 (CDI), and R4 (CD).
a. To calculate the candidate key for the relation R1, we will calculate the closure of all the attributes using the functional dependencies given in F1. We can start by calculating the closure of attribute A, which is A+ = A, C, and D.
However, A does not form a candidate key since it does not contain all the attributes of R1. We can move on to calculating the closure of attribute AB.
A+ = AB, C, D, and I.
Since A and B together can generate all attributes of R1, AB is a candidate key. We can verify this by checking if the closure of AB+ generates all attributes of R1, and indeed it does.
Similarly, we can calculate the closure of attributes CD, EC, and EI to see if they can form candidate keys.
CD+ = C, D, and I, EC+ = A, B, C, and E, and EI+ = C and D. Therefore, the candidate keys for R1 are AB, CD, EC, and EI.
b. Attribute closure for (ACD) and (BCI):
ACD+ = A, C, D, IBCI+ = B, C, D, E, I
c. To find the minimal cover (Fc) of the relation R1, we can start by eliminating the redundant functional dependencies in F1 using the following steps:
Eliminate redundant dependencies: We can eliminate the dependency CD → I since it is covered by the dependency C → DI
Obtain only irreducible dependencies: We can simplify the dependency EC → AB to E → AB since C can be eliminated since it is a non-prime attribute.
Remove extraneous attributes: We can remove the attribute C from A → C since A is a superkey for R1. Therefore, the minimal cover (Fc) of the relation R1 is:
A → CC → DDI → CE → ABE → C
d. To decompose the relation R1 into BCNF form, we can use the following steps:
Identify dependencies violating BCNF:
The dependencies AB → C and EC → AB are violating BCNF since the determinants are not superkeys for R1.
Decompose the relation: We can create two new relations R2 and R3 as follows:
R2 (ABCEI) with dependencies AB → C and E → ABR3 (CDI) with dependencies C → DI and CD → I
Both R2 and R3 are in BCNF since all the determinants are superkeys for the respective relations.
However, they are not a lossless join decomposition since there is no common attribute between R2 and R3.
Therefore, we need to add a new relation R4 (CD) with the primary key CD, which has a foreign key in R3.
This ensures that the join of R2, R3, and R4 is lossless. Therefore, the decomposed relations are R2 (ABCEI), R3 (CDI), and R4 (CD).
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What does outliers mean in math?
Answers
An outlier is a mathematical value in a set of data which is quite distinguishing from the other values.
Its more like outliers are values uncommonly far from the middle. Mostly, outliers have a significant impact on mean, but not on the median, or mode.
Hence making the outliers are crucial in their influence on the mean.
we can say that the outlier is a data point that lies outside the entire pattern in a distribution.
They are mostly shown as dots and its known that the whiskers are required to change. Whiskers stretch out to the farthest point in the data set that isn't an outlier.
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what is -(-4/9) * (-1/7)
Answers
Answer:
−4/63
Step-by-step explanation:
Which is the best estimate of the difference between
6
7
8
and
2
1
8
?
A.
1
B.
3
C.
5
D.
8
Answers
Answer:
c. 5
Step-by-step explanation:
678 rounds to 700 and 218 rounds to 200. 700-200=500
Which of the following is an integer?
1
3
8.666...
-5
10
Answers
Answer:
8.666...
Step-by-step explanation:
It goes on forever and dosent end so its an integer
Determine the general rule (Tn)
Answers
The mean value of 500 homes in a county is $225,000 and the standard deviation is $25,000. approximately how many of the homes in the county are between $175,000 and $225,000?
Answers
240 homes in the county are between $175,000 and $225,000.
The image attached is associated with this question and m in it refers to the mean value which is $225000 here and d refers to the standard deviation which is $25000 here.
Now since m= $225000
and $175000= $225000-$50000= $225000-(2* $25000)= m-2d
Thus, as per the image area covered between m and m-2d= $225000
and $175000 is (34%+14%)of 500 homes= 68% of 500= 240 homes, is the answer.
A random variable X is said to follow a normal distribution if its parameters are mean and standard deviation. Every other distribution can be reduced to a normal distribution.
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