What is another way of writing the following expression?
4 + 5 + 2
A 4(5 + 2)
B 4 × 5 × 2
C (4 + 5) + 2
D (4 + 5) + (4 + 2)
Answers
Answer:
C
Step-by-step explanation:
I think it is C because if you do 4+5+2=11 so, everyone answer.
A) 4(5+2)=28
B) 4x5x2=40
C) (4+5)+2=11
D) (4+5)+(4+2)=15
so, i think it is C
Related Questions
fraction that is equivalent to 3/9 and has a denominator of 3."
Answers
, The fraction equivalent to 3/9 with denominator 3 is the proper fraction p=1/3
What is a fraction in math?A fraction is a part of a whole. In arithmetic, the number is expressed as a quotient, in which the numerator is divided by the denominator. In a simple fraction, both are integers. A complex fraction has a fraction in the numerator or denominator. In a proper fraction, the numerator is less than the denominator.
Given here: The fraction 3/9
Now we can simplify the fraction further by dividing both the numerator and denominator by 3
let p=3/9
then p=3/3 / 9/3
p= 1/3
Hence, The fraction equivalent to 3/9 with denominator 3 is the proper fraction p=1/3
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In the art club, there are 2 seventh graders for every 3 eighth graders. At
this year's art fair, there were 7 paintings by seventh graders for every 12
paintings by eighth graders. Is the ratio of seventh graders to eighth
graders in the art club equivalent to the ratio of paintings by seventh
graders to paintings by eighth graders? *
Answers
Answer:
no
Step-by-step explanation:
2/3 does not equal 7/12.
there would need to be 8 paintings by seventh graders for every 12 by eighth graders in order to have an equivalent ratio.
{ (2,3) , (4,5) , (6,6) }
Answers
Answer:
???? did u type it correctly?
if you toss a die (1), what is the probability of getting the number 5 NOT coming up?
Answers
Answer: .833333
Step-by-step explanation:
5/6
You could get a 1, 2, 3, 4, 6
So 5 in total over 6 options
At the beginning of the week, Josh had 32 computer games, 133% as many computer games than Peter had. By the end of the week, Josh gave Peter 25% of his computer games. How many computer games did Josh and Peter each have bythe end of the week?
a. Josh had 8 games; Peter had 24 games.
b. Josh had 24 games; Peter had 8 games.
c. Josh had 24 games; Peter had 32 games.
d. Josh had 32 games; Peter had 24 games.
Answers
Answer:
The correct answer is letter c. Josh had 24 games and Peter had 32 by the end of the week.
Step-by-step explanation:
We know that Josh has a total of 32 games, while that value is 133% as many as Peter's, therefore the number of games Peter had at the beginning of the week is:
\(josh = \frac{133}{100}*peter\\peter = \frac{josh}{1.33}\\peter = \frac{32}{1.33}\\peter = 24.06\)
At the beginning of the week Peter had 24 games. At the end of the week Josh gave Peter 25% of his games, therefore Peter's total is:
\(peter = 24 + 0.25*josh\\peter = 24 + 0.25*32\\peter = 24 + 8 = 32\)
While Josh had:
\(josh = 32 - 8 = 24\)
The correct answer is letter c.
2. Melissa estimated that she would read 250 pages
last week. She read 290 pages. What is the
percent error of Melissa's estimate? Round to
the nearest whole percent.
I will give brainliest!!!
Answers
Answer:
Is it 11.6%?
Step-by-step explanation:
I divided 290/250
Represent "sum of a number and five" algebraically? (Use n to represent "a number")
Answers
The algebraic representation of "sum of a number and five" can be written as
n + 5
Where n represents the "number".
In mathematics, an algebraic representation is a way of expressing a mathematical relationship or equation using symbols, letters, and mathematical operations. It is a symbolic representation of a mathematical expression or equation that allows us to work with abstract concepts and manipulate them according to certain rules.
For example, the equation y = 2x + 1 is an algebraic representation of a linear function, where y and x represent variables and 2x + 1 is an expression that relates them. Algebraic representations are often used in algebra, calculus, and other areas of mathematics to describe relationships between quantities, solve equations, and make predictions based on mathematical models.
Hence, the algebraic representation of "sum of a number and five" can be written as
n + 5
Where n represents the "number".
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What is the slope of the line
Answers
Answer:
The slope of the line is the ratio of the rise to the run, or rise divided by the run.
Step-by-step explanation:
HOPES THIS HELP :)
You sign up for karate classes. The classes cost $80 per
month
Write an equation for the number of dollars, d, that
you pay for your karate classes if you take classes for
m months.
Complete the table for the missing values of d.
d
1
80
2
3
4
320
Answers
Answer:
m* = d**
1 = $80
2 = $160
3 = $240
4 = $320
*months
**Dollars ($)
Step-by-step explanation:
If it costs 80 per month then you times 80 by the number of months you want to work out. For example, you want to work out the cost of going to karate class for 3 months, and it costs $80 per month. Then you do $80 × 3 = $240.
Ali is cutting 3/8 in. Cookie dough slices from a 10 1/2 in. long roll how many does she get
Answers
Answer:
28 slices
Step-by-step explanation:
Take the length of the roll and divide by the size of the slice
10 1/2 ÷ 3/8
Change the mixed number to an improper fraction
(10*2 +1) /2 ÷ 3/8
21/2 ÷ 3/8
Copy dot flip
21/2 * 8/3
Rewriting
21/3 * 8/2
7 * 4
28
You will get 28 slices
What is the answer I need help and I can’t seem to figure it out
Answers
The new dimension of the rectangular field are 45 ft by 120ft.
How to find the new dimensions of the field?If the field has originally dimensions length L and width W, and we apply a scale factor K, then the new dimensions of the rectangle are:
lenght = K*L
width = K*W
In this case the original dimensions are:
L = 30ft
W = 80ft
And the scale factor is K = 1.5, then the new dimensions are:
L' = 1.5*30ft = 45ft
W' = 1.5*80ft = 120ft
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The volume of a tree stump can be modeled by considering it as a right cylinder. Lauren measures it’s height as 0.7ft and it’s radius as 20in find the volume of the stump in cubic inches. Round your answer to the nearest tenth if necessary
Answers
The volume of the tree stump is approximately 1005.3 cubic inches when rounded to the nearest tenth.
To calculate the volume of the tree stump, we can use the formula for the volume of a cylinder, which is given by:
Volume = π * r^2 * h
Given:
Radius (r) = 20 inches
Height (h) = 0.7 feet
First, let's convert the height from feet to inches since the radius is already in inches. There are 12 inches in 1 foot, so:
Height (h) = 0.7 feet * 12 inches/foot = 8.4 inches
Now, we can substitute the values into the volume formula:
Volume = π * (20 inches)^2 * 8.4 inches
Calculating the volume:
Volume = 3.14159 * (20 inches)^2 * 8.4 inches
≈ 3.14159 * 400 inches^2 * 8.4 inches
≈ 1005.3096 cubic inches
Rounding the volume to the nearest tenth:
Volume ≈ 1005.3 cubic inches
Therefore, the volume of the tree stump is approximately 1005.3 cubic inches when rounded to the nearest tenth.
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What is the value of X?
Answers
Answer:
the answer to the problem is 35.
Answer:
he horizontal value in a pair of coordinates: how far along the point is. The X Coordinate is always written first in an ordered pair of coordinates (x,y), such as (12,5). In this example, the value "12" is the X Coordinate. Also called "Abscissa"
Step-by-step explanation:
(2-cos^2A)(1+2cot^2A)=(2+Cot^2A)(2-sin^2A)
Answers
Answer:
2 sin (2A) cos (2A)^4 + 2cos (2A)
---------------------------------------------------
sin (2A)
Step-by-step explanation:
Student council agrees that it would be nice to have different clocks throughout the school. Each room will eventually have a new clock that somehow reflects the subject taught in the room.
All the math department clocks will have the same base layer with differences in the clock face. The math department clock bases will be a 12-sided regular polygon. You have volunteered to sketch the base so that construction technology classes can begin building the clocks.
Complete the sketch, indicating both the necessary interior and exterior angles. Show your calculations beside the sketch.
Calculate the number of diagonals that could be drawn on the base of the clock.
"A square is a rhombus." Prove or deny this statement. Justify your answer. Diagrams will enhance your explanation.
"A parallelogram is a rectangle." Prove or deny this statement. Justify your answer. Diagrams will enhance your explanation.
Answers
Answer:
Most research has found time-of-day does play a significant part in student achievement. When students were taught at times matching their learning style preferences, scores were significantly higher on achievement tests.
It takes reflection and collaboration with others, but by looking deeper into the time we spend on different tasks, we can improve outcomes for our students.
Unfinished learning is an educational term referring to concepts or skills in any subject that students were in the process of learning but unable to master, or never had the opportunity to learn.
Effective classroom movement simply acknowledges that there is a direct connection between physical movement and things like attention, memory, and learning. One of the most effective (and free) ways to improve attitudes, increase retention, and improve student focus is to lead students in simple movement activities.
Countless studies have shown that early school start times are associated with students getting less sleep, which negatively affects student academic performance. Students with less sleep have difficulty paying attention in class and are likely to have lower grades. They may also experience irritability and fatigue.
The American Academy of Pediatrics has recommended that middle and high schools start at 8:30 a.m. or later to give students the opportunity to get the amount of sleep they need, but most American adolescents start school too early.
But it's more than just physical coordination. This timing system coordinates social and learning cues as well. This sense of time is at work while your child is trying to listen to directions, when they process and respond to those directions, while they converse with friends, read, solve math problems and much more.
Step-by-step explanation:
hope this helped!
Lauder Company had fixed costs of $282,500, variable costs of $645,000, and actual sales amounted to $1,100,000. If the company has a break-even point at $750,000 in sales revenue.a. determine the margin of safety expressed in dollars
b. determine the margin of safety expressed as a percentage of sales. Enter percentage amount as a whole number.
____%
c. Determine contribution margin ratio
_____%
d. Determine the operating income
$______
Answers
The Operating income is $172,500.
To calculate the margin of safety, contribution margin ratio, and operating income, we need to use the given information.
a. Margin of Safety:
Margin of Safety = Actual Sales - Break-even Sales
Given that the break-even point is at $750,000 in sales revenue and actual sales are $1,100,000, we can calculate the margin of safety:
Margin of Safety = $1,100,000 - $750,000 = $350,000
Therefore, the margin of safety is $350,000.
b. Margin of Safety as a Percentage of Sales:
Margin of Safety Percentage = (Margin of Safety / Actual Sales) * 100
Using the values from the previous calculations:
Margin of Safety Percentage = ($350,000 / $1,100,000) * 100 = 31.82%
Therefore, the margin of safety expressed as a percentage of sales is approximately 31.82%.
c. Contribution Margin Ratio:
Contribution Margin Ratio = (Contribution Margin / Sales) * 100
To calculate the contribution margin, we need to subtract variable costs from sales:
Contribution Margin = Sales - Variable Costs = $1,100,000 - $645,000 = $455,000
Using the values, we can calculate the contribution margin ratio:
Contribution Margin Ratio = ($455,000 / $1,100,000) * 100 = 41.36%
Therefore, the contribution margin ratio is approximately 41.36%.
d. Operating Income:
Operating Income = Sales - Variable Costs - Fixed Costs
Using the values provided:
Operating Income = $1,100,000 - $645,000 - $282,500 = $172,500
Therefore, the operating income is $172,500.
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The diameter of a sphere is 24 ft. Find the exact volume of the sphere.
Answers
Answer: 2304pi or approximately 7238.23
Step-by-step explanation:
Radius=24/2=12
V=4/3(pi)(12^3)
V=2304pi or 7238.23
Right triangles ABC and DBC
Answers
Answer:
The writing is blurry. Please snap again in closer range
64x = 8.
What is the value of x that makes the equation true?
Enter the correct answer in the boxes.
2
Answers
Answer:
x = 1/8
Step-by-step explanation:
The value of x is 1/8.
What is an expression?An expression contains one or more terms with addition, subtraction, multiplication, and division.
We always combine the like terms in an expression when we simplify.
We also keep all the like terms on one side of the expression if we are dealing with two sides of an expression.
Example:
1 + 3x + 4y = 7 is an expression.
3 + 4 is an expression.
2 x 4 + 6 x 7 – 9 is an expression.
33 + 77 – 88 is an expression.
We have,
64x = 8
Solve for x.
64x = 8
Divide both sides with 64.
x = 8/64
x = 1/8
Thus,
The value of x is 1/8.
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Hoyt Axton earned $244.80 interest in 9 months from an investment that paid 3.2% per year. Use the simple interest formula to find the amount initially invested
Answers
Solution:
Given:
\(\begin{gathered} \text{Interest,I}=\text{ \$244.80} \\ \text{Time,T}=9\text{months} \\ But\text{ 12months=1year} \\ T=\frac{9}{12}\text{years} \\ \text{Rate,R}=3.2\text{ \%} \end{gathered}\)We need to get to the principal.
\(I=\frac{P\times T\times R}{100}\)Substituting these values into the formula;
\(\begin{gathered} 244.80=\frac{P\times\frac{9}{12}\times3.2}{100} \\ Cross\text{ multiplying;} \\ 244.8\times100=P\times\frac{9}{12}\times3.2 \\ 24480\times12=P\times9\times3.2 \\ 293760=28.8P \\ \text{Dividing both sides by 28.8,} \\ \frac{293760}{28.8}=P \\ P=\text{ \$10,200} \end{gathered}\)The amount initially invested is known as the Principal.
Hence, the principal is $10,200
PLEASE HELP ASAP!!!!!!!!!!!!
Find the sum of the first 15 terms for the geometric sequence
5, 5/2, 5/4, .....
Answers
Answer:
\(\frac{163835}{16384}\)
Step-by-step explanation:
\(\frac{5(1-(1/2)^{15})}{1-(1/2)} \\ \\ =10(1-(1/2)^{15}) \\ \\ =\frac{163835}{16384}\)
Select the correct answer.
Which sentence correctly describes a data set that follows a normal distribution with a standard deviation of 4 and a mean of 14?
68% of the data points lie between 10 and 14.
68% of the data points lie between 8 and 12.
68% of the data points lie between 10 and 18.
68% of the data points lie between 10 and 16.
Answers
Answer:
68% of the data points lie between 10 and 18.
Step-by-step explanation:
one standard deviation to left of mean = 14 - 4 =10
one standard deviation to right of mean = 14 + 4 = 18
68% of data is in this region.
so the answer is 68% of the data points lie between 10 and 18.
Find an equation of the line that passes through the point
(x, y) = (3, 1) and is
perpendicular to the line
2x + 3y = 12
Answers
Considering the definition of perpendicular line, the equation of the perpendicular line that passes through the point (x, y) = (3, 1) and is perpendicular to the line 2x + 3y = 12 is y= 3/2x -7/2.
Linear equationA linear equation o line can be expressed in the form y = mx + b
where
x and y are coordinates of a point.m is the slope.b is the ordinate to the origin and represents the coordinate of the point where the line crosses the y axis.Perpendicular linePerpendicular lines are lines that intersect at right angles or 90° angles. If you multiply the slopes of two perpendicular lines, you get –1.
Equation of perpendicular line in this caseIn this case, the line is 2x+3y= 12. Expressed in the form y = mx + b, you get:
3y= 12 - 2x
y= (-2x +12)÷ 3
y= -2/3x +4
Since multiplying the slopes of two perpendicular lines, you get -1, and the line has a slope of -2/3, you get:
-2/3× slope perpendicular line= -1
slope perpendicular line= (-1)÷ (-2/3)
slope perpendicular line= 3/2
The line passes through the point (3, 1). Replacing in the expression for parallel line:
1= 3/2× (3) + b
1= 9/2 + b
1- 9/2 = b
-7/2= b
Finally, the equation of of perpendicular line is y= 3/2x -7/2.
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Pls help me I only have 45 min and am stuck on this question?!
At 6 am the temperature was -5°F. By noon the temperature had increased 12°. What was the temperature at noon?
Answers
Answer:
7°
Step-by-step explanation:
If the temperature was -5 and it increased by negative 12, it's asking you to add -5 and 12
-5+12=7
john wants to purchase a boat that costs $1,500. He signs an installment agreement requiring a 20% down payment. How much will john need for the down payment
Answers
Answer:
$300 down payment
Step-by-step explanation:
John wants to purchase a boat that costs $1,500. He signs an installment agreement requiring a 20% down payment. How much will john need for the down payment
20% = 0.20
0.20 * 1,500 = $300 down payment
What is the solution to this inequality?
14 + x ≤ 26
Answers
Answer:
\(14 + x \leqslant 26 \\ x \leqslant 26 - 14 \\ { \tt{x \leqslant 12}}\)
Find the radius of a circle whose circumference is 31.4 centimeters. Approximate pi as 3.14.
Answers
Answer:
\(5\:\mathrm{cm}\)
Step-by-step explanation:
The circumference of a circle is given by \(C=2\pi r\), where \(r\) is the radius of the circle.
What we're given:
\(C\) of 31.4Solving for \(r\):
\(31.4=2\cdot 3.14 \cdot r,\\r=\frac{31.4}{2\cdot 3.14}=\boxed{5}\)
Answer:
Radius of circle is 5 cm.
Step-by-step explanation:
Given thatCircumference of circle = 31.4 cmUsing value of π = 3.14 To Find :-Radius of circle
Formula UsedCircumference of circle = 2 × π × r
Solution :-Using Formula
Circumference of circle = 2 × π × r
Substitute the values into the formula
31.4 cm = 2 × 3.14 × r
multiply
31.4 cm = 6.28 × r
Divide , we get
31.4 cm /6.28 = r
5 cm = r
Hence, Radius of circle is 5 cm.
Which of the following pairs show(s) two congruent triangles?
O B only
OB and C only
O A, B, and C
O A and C only
Answers
Answer:
B only
Step-by-step explanation:
Triangles A and C are similar, but not congruent to each other. Similar triangles have proportional sides and congruent angles, while congruent triangles have congruent sides and congruent angles.
Therefore, only B is correct
The question is asking for pairs of congruent triangles but lacks key information needed to accurately answer this, such as lengths or angles. Congruent triangles are identified in geometry based on either side-lengths or angles.
Explanation:The question is about congruent triangles, which in mathematics means triangles that have the same size and shape. But to accurately answer which pairs show two congruent triangles, we need more information. The options provided include 'A', 'B', and 'C' but without knowing more about these elements (for example their lengths or angles), it is impossible to determine which are congruent. Congruent triangles are identified in geometry based on either side lengths (SSS: Side-Side-Side, SAS: Side-Angle-Side, ASA: Angle-Side-Angle) or angles (AAS: Angle-Angle-Side, HL: Hypotenuse-Leg for right triangles). Without this vital information, we cannot definitively answer the question. Be sure to verify all the properties required to prove two triangles congruent.
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What is the greatest common factor of 20 and 65
Answers
Answer:
5
Step-by-step explanation:
Answer:I believe it would be 5
Step-by-step explanation:
because if you do it on a table chart you reach five first as the same number
What is the angle for x
Answers
Answer:
X = 90°Step-by-step explanation:
that is a regular rhombus, by definition it has perpendicular diagonals, so in the center there are 4 90 ° angles, so your answer is x = 90 °