- Rachel earned $54.79 last week. Morgan earned $50.23. About how much more did Rachel earn?
Answer:
Step-by-step explanation:
4.56 $
Answer:
Rachel earned about $5 more than Morgan.
$54.79 - $50.23 = $4.56
$4.56 rounds up to $5
Step-by-step explanation:
I have the same worksheet and I am relatively sure this is correct. Hope this helps someone.
Two angles are complementary . One angle measures 27 . Find the measure of the other angle . Show your work and / or explain your reasoning
Answer:
153°
Step-by-step explanation:
Two angles are complementary . One angle measures 27 . Find the measure of the other angle . Show your work and / or explain your reasoning
Two angles are called supplementary when their measures add up to 180 degrees.
so
180 - 27 = 153°
Pew Research Center is a nonpartisan polling organization that provides information about issues, attitudes, and trends shaping America. In a poll, Pew researchers found that 73% of teens aged 13–17 have a smartphone, 15% have a basic phone and 12% have no phone. The study also asked the respondents how they communicated with their closest friend. Of those with a smartphone, 58% responded texting, 17% social media and 10% phone calls. Of those with no smartphone, 25% responded texting, 29% social media and 21% phone calls. (Pew Research Center website, October 2015).
Required:
a. One statistic (58%) concerned the use of texting to contact his/her closest friend, if the teen owns a smartphone. To what population is that applicable?
b. Another statistic (25%) concerned the use of texting by those who do not own a smart- phone. To what population is that applicable?
c. Do you think the Pew researchers conducted a census or a sample survey to obtain their results? Why?
Step-by-step explanation:
from the available data in this question,
1.
this population is applicable to those teenagers in the study who are aged 13 to 17 years and who own a smartphone
2.
from the question, this population is applicable to the the teenagers in the study within the age of 13 to 17 years who do not own a smartphone.
3. pew research conducted a sample survey and not a census to obtain their results. it would be illogical and not practical to conduct a census. A sample survey is better for this since it would cost less, save more time and also the members of the survey can easily be picked from the american teenage population.. a census would require data for the full population compared to sample survey which would only require a subgroup of the teenage population.
PLEASE HELP!!! Match each mathematical description with its algebraic expression,
Drag the tiles to the correct boxes, Not all tiles will be used
The pairings between the mathematical descriptions and their algebraic expressions are as follows:
1. The absolute value of twice a number increased by 11: |2x + 11|
2. The square root of the difference of the square of a number and 11: [tex]\sqrt{(x^2 - 11)}[/tex]
3. The quotient of two times a number and -11: -2x / 11
4. The sum of the square root of two times a number and 11: [tex]\sqrt{(2x) + 11}[/tex]
The pairings between the mathematical descriptions and their corresponding algebraic expressions:
1. The absolute value of twice a number increased by 11: |2x + 11|
This expression represents the absolute value of the sum of twice a number (2x) and 11. The vertical bars indicate the absolute value operation, which ensures that the result is always positive or zero.
2. The square root of the difference of the square of a number and 11: [tex]\sqrt{(x^2 - 11)}[/tex]
This expression represents the square root of the difference between the square of a number ([tex]x^2[/tex]) and 11. The square root function (√) returns the positive square root of the expression within the parentheses.
3. The quotient of two times a number and -11: -2x / 11
This expression represents the division of -2x (twice a number multiplied by -1) by 11. Dividing by 11 results in a quotient that may be positive, negative, or zero.
4. The sum of the square root of two times a number and 11[tex]\sqrt{(2x) + 11}[/tex]
This expression represents the sum of the square root of twice a number [tex]\sqrt{((2x))}[/tex] and 11. The square root function (√) calculates the positive square root of 2x, and then 11 is added to the result.
By matching the descriptions with their corresponding expressions, we can see that each mathematical description is accurately represented by the algebraic expression provided.
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The question probable may be:
Match each mathematical description with its algebraic expression. Drag the tiles to the correct boxes. Not all tiles will be used
Tiles
-2x/ 11
[tex]\sqrt{(2x) + 11}[/tex]
[tex]\sqrt{(2x - 11)}[/tex]
|2x + 11|
[tex]\sqrt{(x ^ 2 - 11)}[/tex]
Pairs
1. The absolute value of twice a number increased by 11
2. The square root of the difference of the square of a number and 11
3. The quotient of two times a number and -11
4. The sum of the square root of two times a number and 11
A group of ten numbers totals -4. What is the average value of this group of numbers?
How to write a equation from a graph
Answer:
The bottom numbers comes first and then the side
Step-by-step explanation:
If i had a graph and i was using gallons per hour i would put gallons on the bottom and hours on the side
Answer/Step-by-step explanation:
So, if there is line on the graph and we need to get its equation in slope-intercept for (y = mx+b where m is the slope and b is the y-intercept). First, we have to take two points that lie on that line. Then, we will use the slope formula (m = y2 - y1 / x2 - x1). Once we get the slope, we have to find the y-intercept aka the b - value in the equation. So, to find this we have to take one of the coordinate point (that lies on the graph and was used to find the slope) and the slope. When you get the b - value, you have to substitute that value and the slope value into the equation. This is how you can write an equation from a graph.
Ex. (2, 3), (4, 9)
m = 9 - 3 / 4 - 2
m = 6/2
m = 3 <--- This is the m value aka the slope
y = mx + b (In this case, we will use the first point which is (2,3)).
3 = 3(2) + b
3 = 6 + b
b = -3
y = 3x -3
Hope this helps!
HELP PLEASE if i mark you brainliest you will get 50 points im giving brainliest to the right answer
What is the vertex of the following function? y+4=(x+1)^2
A. (1,4)
B. (-1,4)
C. (-1,-4)
D. (1,-4)
Answer: (-1,-4)
Step-by-step explanation:
Find a and b using the factor theorem.
[tex]f(x)=x^3+ax^2+bx-12[/tex] has factor [tex](x-1), (x+1)[/tex]
The values of a and b using the factor theorem for the polynomial f(x), we set f(1) and f(-1) equal to zero. Solving the resulting system of equations, we find that a = 12 and b = -1.
To find the values of a and b using the factor theorem, we need to use the given factors (x - 1) and (x + 1) and the fact that they are roots of the polynomial f(x).
The factor theorem states that if (x - c) is a factor of a polynomial, then f(c) = 0. Therefore, we can set x = 1 and x = -1 in the polynomial f(x) to get two equations.
First, let's substitute x = 1 into f(x):
f(1) = (1)^3 + a(1)^2 + b(1) - 12
f(1) = 1 + a + b - 12
Next, let's substitute x = -1 into f(x):
f(-1) = (-1)^3 + a(-1)^2 + b(-1) - 12
f(-1) = -1 + a - b - 12
Since (x - 1) and (x + 1) are factors, f(1) and f(-1) must equal zero. Therefore, we can set the two equations equal to zero and solve for a and b:
1 + a + b - 12 = 0
-1 + a - b - 12 = 0
Rearraning the equations, we have:
a + b = 11
a - b = 13
Now, we can solve this system of equations. Adding the two equations, we get:
2a = 24
a = 12
Substituting the value of a into one of the equations, we find:
12 - b = 13
b = -1
Therefore, the values of a and b are 12 and -1 respectively.
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Evaluate the following question for f(2) : f(x)=3x+2
Answer:
Step-by-step explanation:
3x+2=5 -2= 3
=3
6=k+5/2 solve for k please help me
Answer:
k=7
Step-by-step explanation:
Es la cantidad que se paga o se cobra por el uso del dinero, por siguente ( se deben considerar tres factores: capital, tasa de interés y tiempo)
Solve for x.
Enter your answer in the box.
x =
°
An irregular pentagon with five different measured angles and five unequal sides. The angles of the pentagon are x degrees, 121 degrees, 108 degrees, 102 degrees, and 100 degrees.
Answer:
X = 109
Step-by-step explanation:
I = 5 – 2 (180) = 540
100 + 102 + 108 + 121 = 431
540 – 431 = 109
X= 109
The value of the angle x will be 109 degrees.
What are polygons?A polygon is a closed polygonal chain made up of a finite number of straight-line segments that are joined to form a planar figure in a geometry or polygonal circuit. A polygon is a region that is bounded by a bounding circuit, a bounding plane, or both.
Given that an irregular pentagon with five different measured angles and five unequal sides. The angles of the pentagon are x degrees, 121 degrees, 108 degrees, 102 degrees, and 100 degrees.
The value of the angle x will be calculated as below:-
100 + 102 + 108 + 121 + x = 540
x = 540 – 431
x= 109
Therefore, the value of the angle x will be 109 degrees.
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Which type of shape could quadrilateral abcd be ? Select all that apply
Answer:
BD (not sure but read the explanation)
Step-by-step explanation:
A quadrilateral is a (2-dimensional) closed shape with four straight sides. E G The shape ABCD shown here is a quadrilateral. A line segment drawn from one vertex of a quadrilateral to the opposite vertex is called a diagonal of the quadrilateral. AC is a diagonal of quadrilateral ABCD, as is BD.
please help me it is due in a hour
Step-by-step explanation:
it may help you to understand.
What is 4/5 = ?/40 Sorry if it’s a stupid question, I forgot this
Answer: 4/5 = 32/40.
Step-by-step explanation: It's okay, i am really good at math and this is simple for me
Answer:
32/40
Step-by-step explanation:
This was my utmost favorite Math when I was in Elementary School. I am surprised that I still remember it.
The average number of points a basketball team scored for three games was 63 points. They scored the same number of points, which was 6 points more than they scored in the third game
To find the height h of a dinosaur in a museum
, Amir placed a mirror on the ground 40 feet from its base.
Then he stepped back 4 feet so that he could see the top of the dinosaur in the mirror. Amir's eyes were
approximately 5 feet 3 inches above the ground. What is the height of the dinosaur? When the answer is
not a whole number, give the answer as a decimal.
Answer:
55 feet
Step-by-step explanation:
5.5 4
_ = _
H 40
The height of the dinosaur is 52.5 ft.
We know that:
12 inches = 1 ft
So, 1 inch = 1/12 ft
or, 3 inches = 3/12 = 0.25 ft.
So the height of Amir is = 5 ft 3 inch = 5.25 ft.
Let the height of the dinosaur is = x.
So, the ratio is:
[tex]\frac{5.25}{x}=\frac{4}{40}\\x=5.25\cdot\frac{40}{4}\\x=52.5[/tex]
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9x-8(x-6)=52 what is the answer
Answer:
x = 4
Step-by-step explanation:
Step 1: Write equation
9x - 8(x - 6) = 52
Step 2: Solve for x
Distribute -8: 9x - 8x + 48 = 52Combine like terms: x + 48 = 52Subtract 48 on both sides: x = 4Step 3: Check
Plug in x to verify it's a solution.
9(4) - 8(4 - 6) = 52
36 - 8(-2) = 52
36 + 16 = 52
52 = 52
What is the slope for the given points of a linear function?
(-2,5),(3,4)
A. -5
B. -1/5
C. 1/5
D. 5
Answer:
Option B
[tex]-\frac{1}{5}[/tex]
Step-by-step explanation:
(-2,5) (3,4)
Apply slope formula to the two points and evaluate.
[tex]m=\frac{y_2-y_1}{x_2-x_1}=\frac{4-5}{3+2}=\frac{-1}{5}=\boxed{-\frac{1}{5}}[/tex]
Hope this helps.
Cindy's school is having a fundraising dance. It costs $5 to get into the dance and $2 for each raffle ticket. If Cindy spends $29 at the dance , how many raffle tickets did she buy?
Answer:
Step-by-step explanation:
11.6
WILL GIVE BRAINLIEST AND 5 STARS AND THANKS
Answer:
A,B,C,D,E,F
Step-by-step explanation:
All of the coordinates that are on the top half
Rachel pumped 7 gallons of water out of her pool each minute for 14 minutes. What was the total change in the amount of water in the pool?
Answer:
-98 gallons
Step-by-step explanation:
7/1=x/14
cross multiply
x=98
Which expression is equivalent to one over five m − 20?
Answer:
1/5m - 20 = 1/5(m - 100)
Step-by-step explanation:
What is the greatest common factor of 48 and 72
Answer:
Method 1: factors of 72: 1, 2, 3, 4, 6, 8, 12, 24, 9, 18, 36, 72 factors of 48: 1, 2, 3, 4, 6, 8, 12, 24, 16, 48 Therefore, the greatest common factor of 48 and 72 is 24.
classify each angle
Answer:
acute: ZXB
right: WBZ, XBY, XBZ, ZBW
obtuse: YXZ,
straight: WBX, YBZ, ZBY,
not:
Step-by-step explanation:
cindy,jamal,and monique are dividing a piece of land using the lone divider method.after flipping coins monique has been selected to be the divider and divides the land into three pieces.the values of the three pieces of land in the yes of the other players are shown below
9514 1404 393
Answer:
The (piece, perceived values) are ...
Cindy, (3, 48%)Jamal, (1, 39%)Monique, (2, 33%)Step-by-step explanation:
We assume the values and questions are as shown in the attachment.
1. After the division, Cindy bids only on piece 3, and Jamal bids only on piece 1. Hence the appropriate final division is ...
Cindy: piece 3
Jamal: piece 1
Monique: piece 2
__
2. Monique divides the land so that the value of each piece to her is 33 1/3%. That is her perceived value for the piece she gets.
Question 3 of 10
Solve the inequality and enter your solution as an inequality in the box below,
using "<="fors or ">" for 2 if necessary.
-2(5x + 1) > 48
Answer here
The solution to the inequality is x < -5.
To solve the inequality -2(5x + 1) > 48, we need to isolate the variable x. Let's simplify the equation step by step:
-2(5x + 1) > 48
Start by distributing -2 to the terms inside the parentheses:
-10x - 2 > 48
Next, isolate the variable by adding 2 to both sides of the inequality:
-10x - 2 + 2 > 48 + 2
-10x > 50
Now, divide both sides by -10, remembering to flip the direction of the inequality when dividing by a negative number:
(-10x) / (-10) < 50 / (-10)
x < -5
This means that any value of x that is less than -5 will satisfy the original inequality. To express the solution using an inequality symbol, we write x ∈ (-∞, -5). The symbol (-∞, -5) represents the interval of all real numbers less than -5, including -5 itself.
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How many 1/2 cup servings are in 1/3 cup of apple juice
Answer:
1/3
Step-by-step explanation:
Answer:
1/2 % 1/3 = 3/2 or 1 1/2 cups of 1/3 are equal to 1/2 cup. Therefore, one and a half 1/3 cups are equal to 1/2 cups.
Step-by-step explanation:
prove that:
log^a n =log^b n × log^a b
Answer:
nnnn njhj
Step-by-step explanation:
jm,
