Answers
Related Questions
Select a counter-example that makes the conclusion false.
You select three marbles from a bag and each of them is black.
Conclusion: All the marbles in the bag are black.
Counterexample:
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There are more than 3 marbles in the bag, and the other ones are red.
Hope this helps!
A counterexample showing the conclusion 'All the marbles in the bag are black' as false.
A counterexample is a scenario where the premises are true but the conclusion is false, demonstrating the invalidity of an argument. In this case, to prove invalidity, a counterexample could be a situation where there is at least one marble in the bag that is not black. For instance, if there are three black marbles and one red marble inside the bag, the selection of three black marbles is still possible, but the conclusion that all marbles are black is false.
Suppose that there is a positive correlation between the variables k and I. If l is 75when k is 7, which of these is most likely to be the value of l when k is 14.
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I = ck
75 = c(7)
75/7 = c
10.71 = c
I = (10.71)k
I = (10.71)(14)
I = 150
Answer:
l = 150
Step-by-step explanation:
The numbers k and have a positive correlation, to know the correlation between these two variables we have to use the values they give us:
When l = 75 the k = 7
The correlation between the two numbers is division. So this can be written as:
correlation: I = 75/7 k
So if we substitute k=14
l = 75/7 * 14
l = 150
We can also get this number by rule of three:
75/7 = x/14
75/7 *14 = l
1050/7 = l
150 = l
The mass of a proton is approximately 1.67 x 10−24, and the mass of an electron is approximately 9.11 x 10−28. Find the approximate ratio of the mass of the proton to the mass of the electron.
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--------------------- = -------------------------- =
9.11x[10^(-28)] 9.11
.183315(10^4)=1833.15
The proton mass is about 1833 times an electron mass
Hope this helps!
what would is be in fraction form 1/1833 or 1833/1
Which line is perpendicular to 5x + 4y = 8?
A) 4y = –5x + 4
B) 5y = 4x + 5
C)5y = –4x –15
D)4y = 5x + 12
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SOMEONE PLEASE HELP!
A store allows customers to fill their own bags of candy. Troy decides he only wants chocolate-covered pretzels and gumdrops. Chocolate-covered pretzels sell for $0.89 per pound, and gumdrops sell for $0.65 per pound. Troy’s bag weighs 1.8 pounds and it cost $1.29.
A. 0.5 pounds of pretzels; 1.3 pounds of gumdrops
B. 0.9 pounds of pretzels; 0.9 pounds of gumdrops
C. 1.3 pounds of pretzels; 0.5 pounds of gumdrops
D. 0.8 pounds of pretzels; 1 pound of gumdrops
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just plug in the prices of the candy .5 times the price of pretzels and 1.3 times the price of gumdrops
5 x 2 x (-4) + 6 divided by 2
43
-37
-23
-17
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First we get rid of any operation within brackets, then we do multiplication and divisions and finally we do additions and subtractions.
We need to evaluate: 5x2x(-4) + 6:
So since we have no operations within brackets, then we will do the multiplications first (in their order) then the addition:
5x2x(-4)+6 = 10x(-4)+6 = -40+6 = -34
Now, we need to divide -34 by 2:
-34/2 = -17
The answer is: -17
Solve for x.
−32>−5+9x
Enter your answer, as an inequality, in the box
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The solution to the inequality -32 > -5 + 9x is x > -3.
To solve the inequality -32 > -5 + 9x, we'll isolate the variable x by first getting rid of the constant term (-5) on the right side.
1. Add 5 to both sides:
-32 + 5 > 9x
-27 > 9x
2. Divide both sides by 9 to solve for x:
-27/9 > x
-3 > x
Therefore, x is greater than -3. In interval notation, this can be written as (-∞, -3). In inequality notation, it's expressed as x > -3.
We started by isolating the variable x by adding 5 to both sides, then divided by 9 to solve for x. Remember, when dividing or multiplying by a negative number, the direction of the inequality sign flips. Thus, the final solution is x > -3.
What consecutive numbers have a sum of 133?
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Two consecutive integers have a sum of 81 . find the integers.
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x+(x+1)=81
2x=80
x=40
the two consecutive integers are: 40, 41
Solve each proportion. Show your work.
a . 2x/7 = 12/14
b. 3/x-1 = 5/7
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Start by cross multiplying
28x = 84
Divide both sides by 28
x = 3
b) 3 / x - 1 = 5 / 7
Start by cross multiplying
21 = 5x - 5
Flip the equation
5x - 5 = 21
+5 +5
5x = 26
x = 26/5
List the members of these sets.
a.{x | x is a real number such that x2 = 1}
b.{x | x is a positive integer less than 12}
c.{x | x is the square of an integer and x < 100}
d.{x | x is an integer such that x2 = 2}
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x^2 = 1 => x = +/- 1
=> {-1, 1} <------ answer
b.{x | x is a positive integer less than 12}
1 ≤ x < 12 => {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11} <------ answer
c.{x | x is the square of an integer and x < 100}
x = n^2 < 100 => n^2 - 100 < 0
=> (n - 10) (n + 10) < 0
=> a) n - 10 > 0 and n + 10 < 0 => n > 10 and n < - 10 which is not possible
b) n - 10 < 0 and n + 10 > 0 => n < 10 and n > - 10 => - 10 < n < 10
=> n = { - 9, - 8, - 7, - 6, - 5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9}
=> x = {0, 1, 4, 9, 16, 25, 36, 49, 64, 81} <---- answer
d.{x | x is an integer such that x^2 = 2}
x = {∅ } because x is √2 which is not an interger but an irrational number
=> Answer: { ∅ }
The sets are:
a) {-1, 1}b) {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}c) {1, 4, 9, 16, 25, 36, 49, 64, 81}d) {∅}.How to find the elements of each set?
We need to find all the values of x that meet the given restrictions for each set.
a) Here we know that x is a real number and we must have:
x^2 = 1
Solving for x:
x = ±√1 = ±1
Then this set is:
{-1, 1}
b) Here x is a positive integer smaller than 12, this is just:
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}
c) In this case x is a square number, and it must be smaller than 100, so let's find all the square values smaller than 100.
1^2 = 12^2 = 43^2 = 94^2 = 165^2 = 256^2 = 367^2 = 498^2 = 649*9 = 8110*10 = 100 (from this onwards, the squares don't meet the criteria).Then this set is:
{1, 4, 9, 16, 25, 36, 49, 64, 81}
d) Here x must be an integer, such that x^2 = 2
Solving the equation we get:
x = ±√2
But √2 is an irrational number, so there is no integer number that meets this restriction, this means that we have an empty set, this is written as:
{∅}.
If you want to learn more about sets, you can read:
https://brainly.com/question/1563195
How do you solve this 2 step equation: 8+b/-4=5
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[tex]8 - \frac{b}{4} = 5 \newline -8 + 8 - \frac{b}{4} = 5 - 8 \newline (-4)\cdot -\frac{b}{4} = -3 \cdot (-4) \newline b = -12[/tex]
.help me thanks much
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=(4^2)^3/2 (x^1/6)^3/2 (y^-2)^3/2 / (x^-1/6)^3/2(y^6)^3/2
= 4^3 x^1/4 y^-3 / x^-1/4 y ^9
= 64 x^(1/4 +1/4) y^(-3-9)
= 64 x^1/2 y^-12
= 64 x^1/2 / y^12
answer is D.64 x^1/2 / y^12
Find the next two terms in the sequence. 0,1,4,9. . . A.13,18 B,16,25 C.13,17 D.16,23
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Answer:
16 & 25
Step-by-step explanation:
had the same question (;
A box measures 2 cm x 0.09 m x 20 mm. what is its volume in cubic centimeters?
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Final answer:
To find the volume of the box, convert all dimensions to centimeters and then use the formula length x width x height. The volume is 36 cm³.
Explanation:
To calculate the volume of a rectangular box with dimensions in different units, we must first convert all dimensions to the same unit of measure. In this case, we will convert meters and millimeters to centimeters:
0.09 m = 0.09 * 100 cm = 9 cm
20 mm = 20 / 10 cm = 2 cm
Now we can calculate the volume using the formula for the volume of a rectangular box, which is length × width × height:
Volume = 2 cm × 9 cm × 2 cm = 36 cm³
TheValue of a stock begins at $0.05/and increase by 0.01 each month write an equation representing the value of the stock v in any months m
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the equation I got was: v=0.05+(0.01m)
The linear equation can be represented as a straight line on a graph. The equation for the given case is v = 0.05 + 0.01m.
What is a Linear equation?A linear equation is a equation that has degree as one.
To find the solution of n unknown quantities n number of equations with n number of variables are required.
Given that,
The value of stock at the beginning is $0.05,
And, its rate of increase for each month is 0.01.
Suppose the value of stock be v and the month be m,
Then, the increment in its value for any month m is $0.01m.
Now, the equation for the value of stock v at any month m can be written by summing its initial value to its increment value obtained for each month as,
v = 0.05 + 0.01m.
Hence, the equation representing the value of the stock v in any months m is given as v = 0.05 + 0.01m.
To know more about Linear equation click on,
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Fred completen 10 math problems This is 40 percent of the number of math problems he has to do How many math problems must he do
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Answer:
15 more/ 25 problems in total
Step-by-step explanation:
Which of these is correct?
A) 30,792 is greater than 31,875.
B) 31,875 is greater than 32,496.
C) 31,875 is greater than 30,792.
D) 32,496 is less than 31,875.
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__________________________________________________________
Find 3 solutions for 2x+y=10
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2×3+4=10
2×2+4=10
X= 3, Y=4
(3*2+4=10)
X= 1, Y=8
(1*2+8=10)
X=4, Y=2
(4*2+2=10)
Hope this helps! :)
Solve p−|5|×|−3|=−20
Answers
Answer:
-5
Step-by-step explanation:
The solution of the equation p − |5| × |−3| = − 20 will be negative 5.
What is the solution to the equation?The distribution of weights to the variables involved that establishes the equilibrium in the calculation is referred to as a result.
The absolute function is also known as the mode function. The value of the absolute function is always positive.
The absolute equation is given below.
p − |5| × |−3| = − 20
Simplify the equation, then we have
p − |5| × |−3| = − 20
p − 5 × 3 = − 20
p − 15 = −20
p = − 5
The solution of the equation p − |5| × |−3| = − 20 will be negative 5.
More about the solution of the equation link is given below.
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Hugo’s friends bought used books at the yard sale Sonia paid 2.25 John paid 6.00 and Keisha paid 3.75 how many books did each friend buy
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Sonia bought 9 books
John bought 24 books
Keisha bought 15 books
If each book costs 0.75, then
Sonia bought 3 books
John bought 8 books
Keisha bought 5 books
Answer:
Sonia , John and Keisha bought 3,8 and 5 books respectively.
Step-by-step explanation:
given ,
Sonia paid 2.25 to buy book in yard sale
John paid 6 to buy book in yard sale
Keisha paid 3.75 to buy book in yard sale
cost of 1 book is equal to 0.75 cent
books bought each of them will be equal to
Sonia = [tex]\dfrac{2.25}{0.75}[/tex] = 3 books
John = [tex]\dfrac{6}{0.75}[/tex] = 8 books
Keisha = [tex]\dfrac{3.75}{0.75}[/tex] = 5 books
Hence, Sonia , John and Keisha bought 3,8 and 5 books respectively.
Which statement best describes why the sale price is a function of the original price
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The formula for the area of a triangle is A = bh, where b is the length of the base and h is the height. The equation solved for h is h = .
Find the height of a triangle that has an area of 30 square units and a base measuring 12 units.
3 units
5 units
8 units
9 units
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h=a/b
h=30/12
h=2.5
What is the measure of each of the following angles? If m
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you have a bottle of water with a leak. after 2 seconds there is 28 ounces left in the bottle. after 6 seconds there are 20 ounces left in the bottle. how much water was in the bottle initially
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Answer:
32!
Step-by-step explanation:
Translate the sentence into an equation using n as the unknown number. Then solve the equation for n. Two times a number increased by 5 is 15. a. 2n(5) = 15 n = 1.5 c. 2n + 5 = 15 n = 20 b. 2n + 5=15 n = 5 d. n + 5 = 15 n = 10 Please select the best answer from the choices provided A B C D
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n=5
Looks like B
During a sale at a bookstore, a customer buys one book at full price. The customer is given a 25 percent discount on a second book of equal or less value. If George buys two books that value full prices of $17 and $8, by what percent is the total cost of the two books reduced during the sale?
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Amount paid for the second book is 0.75 x 8 = $6
Total amount paid = $17 + $6 = $23
Total full cost of the two books = $17 + $8 = $25
Amount of discount = $25 - $23 = $2
% reduction = [tex] \frac{2}{25} \times100\%=8\%[/tex]
Therefore, the percent of the total cost of the two books reduced during the sale is 8%
How many words of length over alphabet s contain exactly two distinct letters?
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The english alphabet contains 2121 consonants and 55 vowels. How many strings of 66 lowercase letters of the English alphabet contain
a) exactly 1 vowelb) exactly 2 vowels
c) at least one vowel
d) at least two vowels
Write an example of a linear equation with one variable and infinitely many solutions.
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3(x + 5) = 3x + 15...this produces infinitely many solutions because it is the same line.
4x + 3 = 2x + 2x + 3....infinitely many solutions
5x - 1 = 10x - 5x - 1....infinitely many solutions
I gave u a few examples :)
Joe sold 15 T-shirts for a total of $82.50.
What is the unit price?