All of the expressions are equivalent except (b) -4 + y.
All the expressions involve adding -4 and - y in various orders, resulting in equivalent expressions due to the commutative property of addition.
However, the expression -4 + y is different because it combines the positive y term with the negative 4, resulting in - 4 + y.
The other expressions either have y added to -4 ( -4 - y) or have -4 added to y (-y - 4, -y + (-4)).
While addition is commutative, changing the order of the terms can affect the overall expression when dealing with negative terms.
So, while mathematically equivalent, the form of -4 + y stands out due to its structure.
Complete Question:
All of the following expressions are equivalent except _____.
(a) -4 - y
(b) -4 + y
(c) -y - 4
(d) -y + (-4 )
The volume of a pyramid varies jointly with the base area of the pyramid and its height. The volume of one pyramid is 35 cubic inches when it's base area is 15 square inches and it's height is 7 inches. What is the volume of a pyramid with a base area of 36 square inches and a height of 5 inches?
0.02 is 10 times 0.2
Holly wants to save money for an emergency. Holly invests $1,100 in an account that pays an interest rate of 8.75%. How many years will it take for the account to reach $6,400
Answer:
20.99 years . plato
Step-by-step explanation:
what is the vertex of y=3x^2+6x+5
Who wanna help me ??
Determine the scale factor of the function f(x)=1/3root x
A spinner is divided into 10 equal sections numbered 1 through 10. If the arrow is spun twice, what is the probability the first number will be a 2 and the second number will be a 4?
The probability of spinning 2 then 4: [tex]\( \frac{1}{10} \times \frac{1}{10} = \frac{1}{100} \).[/tex]
To find the probability that the first spin results in a 2 and the second spin results in a 4, we need to determine the probability of each event and then multiply them together because the spins are independent.
1. Probability of spinning a 2 on the first spin:
Since there is 1 section labeled '2' out of 10 sections in total, the probability of spinning a 2 on the first spin is [tex]\( \frac{1}{10} \)[/tex].
2. Probability of spinning a 4 on the second spin:
Similarly, there is 1 section labeled '4' out of 10 sections in total, so the probability of spinning a 4 on the second spin is also [tex]\( \frac{1}{10} \)[/tex].
Now, to find the probability of both events happening (the first spin resulting in a 2 and the second spin resulting in a 4), we multiply the probabilities of each event:
[tex]\[ P(\text{first spin = 2}) \times P(\text{second spin = 4}) \][/tex]
[tex]\[ = \frac{1}{10} \times \frac{1}{10} \][/tex]
[tex]\[ = \frac{1}{100} \][/tex]
So, the probability that the first spin results in a 2 and the second spin results in a 4 is [tex]\( \frac{1}{100} \)[/tex].
In a school, the probability that a student takes environmental science and geography is 0.72.The probability that a student takes technology is 0.25. What is probability that a student takes geography given that the student is taking environmental science?
Pat writes all the 7-digit numbers in which all the digits are different and each digit is greater than the one to its right (so the tens digit is greater than the units, the hundreds greater than the tens, and so on). For example, 9,865,320 is one of the numbers that Pat writes down.
One of Pat's numbers is chosen at random. What is the probability that the middle (thousands) digit is a 5?
What is the estimate of 2616
If compact discs cost $15.89 each, how much does one compact disc cost with 6% sales tax?
6% = 0.06
if you want to know the total price including the tax
multiply 15.89 x 1.06 = 16.84
If compact discs cost $15.89 each. Then the cost of each disc after 6% sales tax will be $ 16.84.
What is the percentage?The amount of something is expressed as if it is a part of the total which is a hundred. The ratio can be expressed as a fraction of 100. The word percent means per 100. It is represented by the symbol ‘%’.
If compact discs cost $15.89 each.
Then the cost of each disc after 6% sales tax will be
→ 1.06 × $ 15.89
→ $ 16.84
If compact discs cost $15.89 each. Then the cost of each disc after 6% sales tax will be $ 16.84.
More about the percentage link is given below.
https://brainly.com/question/8011401
#SPJ2
Write a real-world situation that can be modeled by y equals 3 to the power of t. post your situation and explain why it is modeled by the equation shown.
a. choose a situation written by another student. do you agree that the student's situation can be modeled by the given equation?
b. explain how you would modify either your situation, or another student's situation, if the equation was changed to y equals 2 open parentheses 3 close parentheses to the power of t.
c. if the equation were rewritten in the form y equals b open parentheses 1 plus r close parentheses to the power of t, what would be the value of r? tell what this value means in relation to either your, or another student's, situation.
Evaluate ,where e is the solid that lies between the cylinders x^2+y^2=1 and x^2+y^2=16, above the xy-plane, and below the plane z=y+4
To evaluate the solid e which lies between two cylinders and a plane, one would typically set up a triple integral in cylindrical coordinates. This involves translating the given boundaries from rectangular coordinates into cylindrical coordinates to account for the radial, angular, and vertical dimensions of the solid.
Explanation:This question pertains to the evaluation of a solid, denoted as e, that is located between the two cylinders x^2 + y^2 = 1 and x^2 + y^2 = 16. These cylinders are located above the xy-plane and below the plane z = y + 4. The evaluation of such a solid requires the application of integral calculus. Typically, in such cases we would set up a triple integral by converting rectangular coordinates into cylindrical coordinates (r, theta, z).
Given the specifics of the solid, the radial path r would vary between sqrt(1) and sqrt(16), which is between 1 and 4. The angular path theta would cover the full circle, thus varying between 0 and 2π. The z-coordinate would be bounded below by the xy-plane (0) and above by the plane z = y + 4. Please note that you would need to convert the z-boundary into cylindrical coordinates as well.
Learn more about Triple Integrals in Cylindrical Coordinates here:https://brainly.com/question/34165697
#SPJ11
What's the value of 4 in the number 745
How many centimeters are there in 1.23 x 10-6 kilometers?
Answer:
The correct answer is 0.123 cm.
Step-by-step explanation:
Each kilometer has 1000 meters and each meter has 100 centimeters.
Hence each kilometer has 1000×100=100000=105 centimeters.
Therefore, 1.23×10−6 kilometer will have
1.23×10−6×105=1.23×10−6+5=1.23×10−1 or 0.123 centimeters
Graphs of exponential functions
For both y= 8× and y= (2/7)×, what would be the equation of the horizontal asymptote for those two?
The equation y = 30x + 40 represents the line of best fit showing Ted’s earnings in terms of the number of hours he works as a plumber. If x is the number of hours he works and y is Ted’s earnings, which statement describes this situation correctly? Ted’s initial charge is $30, and his hourly charge is $40. Ted’s initial charge is $40, and his hourly charge is $30. Ted does not charge an initial amount, and his hourly charge is $40. Ted does not charge an initial amount, and his hourly charge is $70.
Answer: Ted’s initial charge is $40, and his hourly charge is $30.
Step-by-step explanation:
We know that the general equation of a line in intercept form is given by :-
[tex]y=mx+c[/tex], where m is the slope of the line and c represents the y-intercept of the function.
The given function :-The equation [tex]y = 30x + 40[/tex] represents the line of best fit showing Ted’s earnings in terms of the number of hours he works as a plumber.
Here, Slope =30
The y-intercept = 40
If x is the number of hours he works and y is Ted’s earnings.
Then by comparing the general equation of line in intercept form, the initial amount charged by Ted =y-intercept = $ 40
His hourly charge = Slope = $ 30
Which expression is equivalent to (3b + 2r) + (4b + r)?
two similar triangles have areas of 18 and 32 find the ratio of their perimeters
Using the given zero, find one other zero of f(x). Explain the process you used to find your solution. 1-6i is a zero of f(x) = x^2-2x^3+38^2-2x+37
a tree casts a 9 ft shadow at the same time that a person 6 ft tall casts a 4 ft shawdow. what is the height of the tree?
Evaluate the expression for s = 11 and v = 8.
(s – v)2
A. 113
B. 6
C. 9
D. 57
Answer:
C. 9
Step-by-step explanation:
s=11
v=8
(11-8)²
(3)²
9
A telephone pole cast a shadow that is 37 m long find the height of the telephone pole if a statue that is 33 cm tall cast a shadow 83 cm long ?
Answer:
The height of the telephone pole is 14.711 m (Approx) .
Step-by-step explanation:
Let us assume that the height be x .
Let us assume that the shadow be y .
(As the shadow is always proportional to the height .)
Thus
[tex]x\propto y[/tex]
y = kx
Where k is the constant of proportionality .
As given
if a statue that is 33 cm tall cast a shadow 83 cm long .
y = 83 cm
x = 33 cm
Put in the equation y = kx .
83 = 33k
[tex]k = \frac{83}{33}[/tex]
As given
A telephone pole cast a shadow that is 37 m .
Let us assume that the height of the telephone pole be z .
As
1m = 100cm
37m = 3700 cm
y = 3700 cm
x = z
Put in the equation y = kx .
3700 = zk
[tex]k = \frac{3700}{z}[/tex]
Compare the value of k .
[tex]\frac{3700}{z} = \frac{83}{33}[/tex]
[tex]\frac{3700\times 33}{83} =z[/tex]
[tex]\frac{122100}{83} =z[/tex]
z = 1471.1 cm(Approx)
As
[tex]1\ cm = \frac{1}{100}\ m[/tex]
[tex]1471.1\ cm = \frac{1471.1}{100}\ m[/tex]
= 14.711 m (Approx)
Therefore the height of the telephone pole is 14.711 m (Approx) .
The scores of a high school entrance exam are approximately normally distributed with a given mean m = 82.4 and standard deviation = 3.3. What percentage of the scores are between 75.8 and 89?
The percentage of the scores are between 75.8 and 89 can be calculated using z-scores.
The percentage of the scores between 75.8 and 89 is 95%.
Given:
The mean is [tex]m=82.4[/tex].
The standard deviation is [tex]\sigma =3.3[/tex].
Calculate the Z- score for 75.8.
[tex]Z(75.8)=\dfrac{(75.8-82.4)}{3.3} \\Z(75.8) = -2[/tex]
Calculate the Z- score for 89.
[tex]Z(89)=\dfrac{(89-82.4)}{3.3}\\Z(89)=2[/tex]
Calculate the percentage of the scores are between 75.8 and 89.
[tex]P(75.8<X<89)=P(-2<Z<2)\\P(75.8<X<89)=P(Z<2)-P(Z<-2)\\[/tex]
Refer the z-table, put the value,
[tex]P(75.8<X<89)=0.9772-0.0227\\P(75.8<X<89)=0.9545[/tex]
Thus, the percentage of the scores between 75.8 and 89 is 95%.
Learn more about z-score here:
https://brainly.com/question/13299273
Which equation represents the average of the x-intercepts for 4x^2-24x+20
Factor and simplify the algebraic expression.
3x^-4/3 +6x^1/3
Thanks in advance if you can help me!
Consider the partially completed one-way anova summary table. source sum of squares degrees of freedom mean sum of squares f between 270 within 18 total 810 21 what is the sum of squares within for this anova procedure?
a. 620
b. 390
c. 540
d. 680
The one-way ANOVA or one – way analysis of variance is used to know whether there are statistically substantial dissimilarities among the averages of three or more independent sets. It compares the means between the sets that is being examined whether any of those means are statistically pointedly dissimilar from each other. If it does have a significant result, then the alternative hypothesis can be accepted and that would mean that two sets are pointedly different from each other. The sum of squares within for this ANOVA procedure is 680. The answer is letter D.
Which fraction has a value that's equal to 7/8?
Which of the numbers below are whole numbers?Check all that apply. A. 9747.25 B. 0.7832 C. 918 D. 0 E. 46245.7 F. 484.857
It costs $145 for 10 people to attend a concert. How much does it cost a group of 8 people?
Answer:
$145/10 = $14.50
$14.50 * 8 = $116.00
Step-by-step explanation: