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Related Questions
pls help me solve this question pls show how you got the answer
Answers
it appears that there are 7 cubes, so divide the overall volume by the seven cubes, making the volume of each one would 8. Volume is length times with times height so you would find the cube root of eight which is two. This means that each side length is 2 so you would find the area of each side and add them all together. This adds up to equal 120.
Hope this helped!!
explanation:
Which set is closed under subtractionWhich answer choice shows that the set of irrational numbers is not closed under addition
Answers
Answer:
(a) Set of rational numbers
(b) [tex]\pi + (-\pi) = 0[/tex]
Step-by-step explanation:
Solving (a): Set that is closed under subtraction
The solution to this is rational numbers.
For a set of number to be closed under subtraction, the following condition must be true
[tex]a -b = c[/tex]
Where
a, b, c are of the same set.
The above is only true for rational numbers.
e.g.
[tex]1 - 2 = -1[/tex]
[tex]5 - 5 = 0[/tex]
[tex]\frac{1}{2} - \frac{1}{4} = \frac{1}{2}[/tex]
[tex]4 - 2 = 2[/tex]
The operations and the result in the above samples are rational numbers.
Solving (b): Choice not close under addition[See attachment for options]
As stated in (a)
For a set of number to be closed under subtraction, the following condition must be true
[tex]a -b = c[/tex]
Where
a, b, c are of the same set.
In the given options (a) to (d), only
[tex]\pi + (-\pi) = 0[/tex] is not close under addition because:
[tex]\pi[/tex] is irrational while [tex]0[/tex] is rational
In other words, they belong to different set
Question
Find the Surface Area of the Square Pyramid.
6 m
4 m
Answers
The surface area of a square pyramid is equal to: B. 64 m².
How to calculate the surface area of a square pyramid?In Mathematics, the surface area of a square pyramid can be calculated by using this mathematical equation:
Surface area of square pyramid = [tex]a^2+2a\sqrt{(\frac{a}{4})^2 +h^2}[/tex]
where:
a represents the base edge of a square pyramid.h represents the height of a square pyramid.For the height, we have:
6² = h² + (4/2)²
36 = h² + 4
h² = 32
h = √32
Height, h = 5.7 m.
By substituting the given side lengths into the formula for the surface area of a square pyramid, we have the following;
Surface area of square pyramid = [tex]4^2+2(4)\sqrt{(\frac{4}{4})^2 +5.7^2}[/tex]
Surface area of square pyramid = [tex]16+8\sqrt{(1 +32)}[/tex]
Surface area of square pyramid = 64.33 ≈ 64 m².
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Can someone help me out these problems !!!
Answers
Answer:
Zoom in more and I can help
Step-by-step explanation:
Seven students were surveyed on the amount of money they make per hour. The results are shown below:
$8.00 $8.25 $8.50 $9.00 $9.25 $10.00 $10.50
What is the mode of the data set?
Answers
Answer:
There is no mode in these set of numbers.
Seven students were surveyed on the amount of money they make per hour. The results are shown below: $8.00, $8.25, $8.50, $9.00, $9.25, $10.00, $10.50 for this given data there is no mode present in the dataset.
In statistics, the mode is a measure of central tendency that represents the most frequently occurring value in a dataset. It can be used to determine the typical or common value in a given set of data. In this case, we have the hourly wages of seven students, and we need to find the mode of this dataset.
To find the mode, we need to identify the value that occurs most frequently in the dataset. Let's list the data in ascending order:
$8.00, $8.25, $8.50, $9.00, $9.25, $10.00, $10.50.
From the given data, we can observe that no value is repeated. In this case, we say that there is no mode or the dataset has no mode. Since each student earns a different hourly wage, there is no single value that appears more frequently than the others.
Mathematically, we can represent the given dataset as a set of values: {8.00, 8.25, 8.50, 9.00, 9.25, 10.00, 10.50}. The mode, denoted as "Mode(X)", is the value(s) that occur(s) most frequently in the dataset X.
In this case, Mode(X) = None or Mode(X) = ∅ (empty set).
This indicates that there is no mode present in the dataset.
It is important to note that a dataset can have more than one mode or no mode at all. When there are two or more values with the same highest frequency, the dataset is said to be multimodal. In our example, since all values occur only once, there is no mode.
In conclusion, the mode of the given dataset, which represents the most frequently occurring value, is not applicable in this case as there is no value that occurs more frequently than the others.
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The diameter of this beach ball is 12 inches.
Apply the formula for the volume of a sphere to
determine how much air it can hold. Use 3.14159 or
the a button on a calculator. Round the answer to the
nearest hundredth.
4
Sphere V = ſ tem
How much air can the beach ball hold?
Answers
Solve for V
To solve for V we have to do the following.
The formula above reads V(Volume of air) equals 4 divided by 3 times pi times 6 to the power of 3
Answer:
904.78
Step-by-step explanation:
I have to use completing the square then put it in vertex form, and I have no clue how the hell do to that.
Answers
Answer:
y=8(x+1)²-2
Step-by-step explanation:
Completing the square is a method of factorising. x²+bx+c=0 becomes x²+bx+([tex]\frac{1}{2}[/tex]b)²-([tex]\frac{1}{2}[/tex]b)²+c=0. This then gets converted to make an equation of (x+[tex]\frac{1}{2}[/tex]b)²+(-([tex]\frac{1}{2}[/tex]b)²+c)=0.
Vertex form is y=a(x-h)²+k.
8x²+16x+6=0 must first be divided by 8 to 8(x²+2x+[tex]\frac{6}{8}[/tex])=0 (as there cannot be a coefficient for x²).
This will become 8(x²+2x+[tex]\frac{2}{2}[/tex]²-[tex]\frac{2}{2}[/tex]²+[tex]\frac{3}{4}[/tex])=0.
From there, using the method above, we can convert it to 8[(x+1)²-1+[tex]\frac{3}{4}[/tex]]=0.
Solving this gets 8[(x+1)²-[tex]\frac{1}{4}[/tex]]=0.
With 8 as a, 1 as -h, and 8×-[tex]\frac{1}{4}[/tex] (-2) as k, we can input this into vertex format to get the result of y=8(x+1)²-2.
**This equation involves completing the square and vertex form, which you may wish to revise. I'm always happy to help!
The graph of h (x) = StartAbsoluteValue x minus 10 EndAbsoluteValue + 6 is shown. On which interval is this graph increasing
Answers
Answer:
x≥10 or x∈[10, ∞)
Step-by-step explanation:
The graph we are given is h(x) = |x-10|+6, which has the shape of a V. The vertex is at (10, 6), so to the right of the vertex, the graph is increasing.
Therefore, the graph increases during the interval x≥10 or x∈[10, ∞).
A woman buys a pair of shoes at a sale,
She pays $60. saving $15 on the regular
price. The percentage discount on the
shoes is
(A)
20
(B)
25
-
(C)
33
3
(D)
80
Answers
Answer:
20 %
Step-by-step explanation:
If she saved 15 dollars and paid 60, the original price was 60+15 = 75
The percent discount is (original - new) / original = ( 75-60)/75 = 15/75 = .2
Change to percent form = .2 * 100 =20%
Answer:
B.) 20 %
The percentage discount on the shoes is 20 % .
Step-by-step explanation:
Given :- A woman buys a pair of shoes at a sale . She paid $60 and saving $15 on the regular price.To Find :-The percentage discount on the shoesSolution. :-She pays 60 dollers and saved 15 dollers on the regular price.
original price of pair of shoes = 60 + 15 = 75
Percentage discount is = original price - new price / original price
= 75 - 60 / 75 = 15 / 75 = 0.2
Percentage discount = 0.2
Change into percentage =0.2× 100 = 20%
Therefore, the percentage discount on the shoes is 20 % .
The second statement is the
of the first.
X = у
y = x
A. contradiction
B. inverse contrapositive
C. inverse
D. converse
a
SUBMIT
HELP
Answers
Answer:
The second statement is the
of the first.
X = у
y = x
A. contradiction
B. inverse contrapositive
C. inverse
D. converse
Step-by-step explanation:
imverse
The second statement is the contrapositive of the first.
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
We know that x → y is a conditional statement read as 'if x then q'.
And, The converse EXCHANGES the hypothesis and conclusion such as:
⇒ y → x
And, The 'contrapositive' statement basically NEGATES the converse of the conditional such as:
⇒ ¬y → ¬x
Coming back towards the question,
Given that;
x ⇒ y
¬y ⇒ ¬x
Therefore, The second statement is the contrapositive of the first.
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Write the equation (y = mx+b) for the following scenario: A bulldozer can be rented at a fixed rate of $800 plus $120 for every hour that it is used.
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x = hours
y = (120)x + 800
help help help with maths please
Answers
B. 9cm.
C.9cm.
D. I am not sure sorry
Solve for x. Round to the nearest tenth of a degree, if necessary. Please help!!!!
45
W
V
92
Answers
Answer:
[tex]\displaystyle x^\circ \approx 29.3[/tex]
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of EqualityTrigonometry
[Right Triangles Only] SOHCAHTOA[Right Triangles Only] sinθ = opposite over hypotenuseInverse TrigStep-by-step explanation:
Step 1: Define
Identify variables
Angle θ = x
Opposite Leg = 45
Hypotenuse = 92
Step 2: Solve for x
Substitute in variables [sine]: [tex]\displaystyle sin(x^\circ) = \frac{45}{92}[/tex]Inverse Trig: [tex]\displaystyle x^\circ = sin^{-1}(\frac{45}{92})[/tex]Evaluate: [tex]\displaystyle x^\circ = 29.2834436[/tex]Round: [tex]\displaystyle x^\circ \approx 29.3[/tex]need help ASAP due in a few min
Answers
Answer:
A
Step-by-step explanation:
T o show the inverse, the output becomes the input
The input is the output
The input is 2,4,6,8
The output is 1,3,5,7
They will also be in the same order so 1 went to 2 so 2 will go to 1
plz help
Find the slope, m of the line that passes through the points (3/8, −1/4) and (−5/16, 1/6).
Enter your answer as a fraction in simplest form in the box.
Answers
Answer:
-20/33
Step-by-step explanation:
y2 - y1 / x2 - x1
1/6 - (-1/4) / -5/16 - 3/8
5/12 / -11/16
= -20/33
CAN SOMEONE HELP ME WITH THIS PLEASE AND THANK YOU.
Answers
Answer:
17 1/2
Step-by-step explanation:
Tina, a single woman, earned wages of $70549, received $1287 in interest from a savings account, and contributed $2753 to a tax-deferred saving plan. She contributed $1505 to charity. Find Tina's federal tax. (More info in the attachment)
Answers
Answer:
[tex]\$14,733.25[/tex]
Step-by-step explanation:
Taxable income refers to the income subject to taxes from government, including but not limited to federal tax.
Since taxable income is equal to $58,933, tax will be based off of this value. Because Tina is single and her income falls within the 25% range, her federal tax is equal to:
[tex]\$58,933\cdot 0.25=\boxed{\$14,733.25}[/tex]
Pls help!! I can’t figure out how to do thisss
Answers
Answer: 30 and 26
Step-by-step explanation:
Which statement is true? asap thx reeeeeeeeeeeeeeeeeeeeee
A. 24 – 15 × 4 – 3 × 2 = 30
B. 24 – 15 × (4 – 3) × 2 = 30
C. (24 – 15) × 4 – 3 × 2 = 30
D. (24 – 15) × 4 – 3 × 2 = 66
Answers
Answer:
the correct answer should be C: (24-15) x 4-3 x 2=30
C. (24 - 15) x 4 - 3 x 2 = 30
Hope this helps! :)
the floor of a warehouse is 60m long 40m wide. find the cost of polishing the floor plzzz helpp
Answers
Answer:
Rs 192000
Step-by-step explanation:
area of floor = l*b
=60 * 40
=2400 m^2
cost of polishing per square cm of the floor is Rs 80
cost of polishing floor = 2400 * Rs 80
=Rs 192000
2/9-1/5*x
An equivalent expression ☝
Answers
Answer:
1/45
Step-by-step explanation:
simplify this 2x - 1 = 8
Answers
Answer is below. Look at the steps to clearly understand my answer.
Now, the first time to simplifying this to add both sides by 1.
2x - 1 = 8 → 2x - 1 + 1 = 8 + 1
Since we added both sides, we'll now simplify the problem.
Add both numbers.
2x - 1 + 1 = 2x8 + 1 = 92x = 9Lastly, we'll divide both sides of the equation by the same term.
2x = 9[tex]\frac{2x}{2} =\frac{9}{2}[/tex]Now, cancel both terms that are in both the numerator and denominator.
If you look back at the fraction, 2 is in the numerator and denominator, so we'll cancel those terms.
When you cancelled the terms, you should get x = 9/2.
Any questions? Comment below.
Answer:
Hi, there the answer is [tex]x=\frac{9}{2}[/tex]
Step-by-step explanation:
Step 1: Add 1 to both sides.
2x−1+1=8+1
2x=9
Step 2: Divide both sides by 2.
2x /2 = 9 /2
x= 9 /2
Hope This Helps :)
Select all of the expressions which show how to convert 2.5 yards into inches.
Answers
Answer:
90
Step-by-step explanation:
Find the volume of the square pyramid. Round your answer to the nearest hundredth.
A. 11.16 cubic yards
B. 54.25 cubic yards
C. 60.26 cubic yards
D. 96.12 cubic yards
Answers
Answer:
B
Step-by-step explanation:
cot²3x - 3cot3x +2 = 0
cotx = t
what equation for t
Answers
Answer:
Step-by-step explanation:
cot²(3x)=y
y²-3y+2=0
y²-y-2y+2=0
y(y-1)-2(y-1)=0
(y-1)(y-2)=0
y=1,y=2
cot3x=1
tan 3x=1=tan (π/4)=tan (nπ+π/4)
3x=nπ+π/4=(4nπ+π)/4=(4n+1)π/4
x=(4nπ+1)π/12,n is an integer.
cot 3x=2
tan 3x=1/2
3x=tan^{-1}(1/2)≈26.57°+360n
x≈8.86°+120n
Match each formula to what it measures.
1. 2 l + 2 w
surface area of a cylinder
2. Πr2
area of a circle
3. 2 Πr2 + 2 Πrh
perimeter of a rectangle
4. Bh
volume of a triangular prism
Answers
Answer:
1. 2l + 2w
Perimeter of a rectangle
2. πr2
Area of a circle
3. 2πrh+2πr^2
Surface area of a cylinder
4. Bh
Volume of a triangular prism.
(This formula means the area of the base multiplied by the height)
Step-by-step explanation:
I really hope this helps!
I NEED HELP PLEASE UHHH PLEASE I NEED HELP UUUUHHHHHHH
Sulio wants to build a wooden fence to enclose his vegetable garden. Determine the amount of fencing he needs by finding the perimeter of the garden.
Perimeter = 2 times length + 2 times width. The length of a garden is 8 feet and the width is 6 feet.
Evaluate the formula for the perimeter of a parallelogram to solve the problem. Then check all that apply.
First, write the formula for the perimeter of a parallelogram, P = 2l + 2w.
Next, use parentheses when you substitute 8 for l and 6 for w.
After multiplying, add 16 and 12.
Sulio needs 28 feet of fencing.
Sulio needs 48 feet of fencing.
Answers
Answer:
Sulio needs 28 feet of fencing
Step-by-step explanation:
P= 2l + 2w
Length- 8 ft
Width- 6 ft
Use formula with the given:
2(8) + 2(6)
= 16 + 12
= 28
Therefore, Sulio needs 28 feet of fencing
Hope this helps
Answer:
a, b, c, d
Step-by-step explanation:
A grandfather clock that usually sells for $500 is selling at a 25% discount.
What is the sale price of the clock?
Answers
Answer:
$375
Step-by-step explanation:
Method I
25% = .25
500 * .25 = 125
500 - 125 = 375
-----------------------
Method II
1 - .25 = .75
500 * .75 = 375
Help please like please
Answers
Answer:
With What?
Step-by-step explanation:
the most obese countries in the world have obesity rates that range from 11.4% to 74.6%.
a. what is the best estimate of the average obesity percentage for these countries?
b. The United States has an average obesity rate of 33.9%. Is this the rate above average or below?
c. How does the United States Compare to other countries?
Answers
The required a) average is 43%, b) average obesity of the United States is below the average, and c) the United States obesity is moderate.
Statistics is the study of mathematics that deals with relations between comprehensive data.
Here,
a. To determine the best estimate of the average obesity percentage for these countries.
Average = 11.4 + 74.6 / 2 = 86 / 2 = 43%.
b. The United States has an average obesity rate of 33.9%.
Since the average is 43%, so the rate of the united states is below the average.
c. How does the United States Compare to other countries?
Since the rate of obesity of the united states is moderate it lies between the interquartile ranges.
Thus, the required a) average is 43%, b) average obesity of the United States is below the average, c) the United States obesity is moderate.
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