Answer: 42
Step-by-step explanation:
Example:
Solve x + 7 < 15
Solution:
x + 7 < 15
x + 7 – 7 < 15 – 7
x < 8
Inequalities Of The Form “x – a < b” or “x – a > b”
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The solution of the inequality 1 1/8 + b ≥ 7/16 will be;
⇒ - 11/16 ≤ b
What is Inequality?
A relation by which we can compare two or more mathematical expression is called an inequality.
Given that;
The inequality is,
⇒ 1 1/8 + b ≥ 7/16
Now,
Solve the inequality as;
The inequality is,
⇒ 1 1/8 + b ≥ 7/16
Solve for b as;
⇒ 9/8 + b ≥ 7/16
Subtract 9/8 as,
⇒ 9/8 + b - 9/8 ≥ 7/16 - 9/8
⇒ b ≥ (7 - 18) / 16
⇒ b ≥ - 11/16
⇒ - 11/16 ≤ b
Thus, The solution of the inequality 1 1/8 + b ≥ 7/16 will be;
⇒ - 11/16 ≤ b
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solve for 1/x(x-3)=2/x-3+3/x
To solve for 1/x(x-3) = 2/(x-3) + 3/x, we can simplify and rearrange the terms on the right side:
1/x(x-3) = 2/(x-3) + 3/x
Multiplying both sides by x(x-3):
1 = 2x + 3x(x-3)/x
Expanding the right side:
1 = 2x + 3x^2 - 9x/x
Cancelling x from the right side:
1 = 2x + 3x^2 - 9
Dividing both sides by x^2:
1/x^2 = 2/x + 3 - 9/x^2
Rearranging the terms:
1/x^2 - 9/x^2 = 2/x + 3
Isolating the x terms:
-8/x^2 = 2/x + 3
Multiplying both sides by x^2:
-8 = 2x + 3x^2
Expanding the right side:
-8 = 2x + 3x^2
Rearranging the terms:
3x^2 + 2x + 8 = 0
This is a quadratic equation and can be solved using the quadratic formula or factoring. The solutions are the values of x that make the equation equal to zero.
In a poll of 100 randomly selected people at a mall, 38 people make less than $50,00 a year and 23 people made more than $100,000 a year. If I had to choose one of the people polled at random, what is the probability I pick someone that makes less than $50,000 or more than $100,000?
Answer:
61%
Step-by-step explanation:
First we need to add the two numbers,38 and 23.Then we will get 61.To convert a number into a probability . we will have to take change the value.100 turns into 1 and 61 turns in to 0.61.Then to convert it into a percentage, which will give us our answer 61%.
PLEEEEEASE HEEEEEELPPPP
Answer:
x≤20
Step-by-step explanation:
x+5≤25
-5. -5
x≤20
Hopes this helps please mark brainliest
Answer:
The answer is B
Step-by-step explanation:
20+5=25 and x can be greater than or equal to 25
Kelsey gave the cashier $30 to pay for 4 pounds of steak. The cashier gave her $3.12 in change. Each pound of steak cost the same amount. What is the cost in dollars and cents for each pound of steak? A. $26.88 A. , $26.88, , , , , , B. $6.72 B. , $6.72, , , , , , C. $7.50 C. $7.50, D. $8.28
Answer:
B
Step-by-step explanation:
30-3.12=26.88 divide that by 4 and you get 6.72
Answer:
The Answer is B, $6.72
Step-by-step explanation:
30-3.12= 26.88
26.88÷ 4= 6.72
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The sequence is decreasing as n increases and sequence converges to the value 0.
The given sequence is defined as aₙ = 1 / (7n + 3).
To determine if the sequence converges or diverges, we need to analyze its behavior as n approaches infinity.
As n increases, the denominator 7n + 3 also increases which means that the values of aₙ will get smaller and smaller, approaching zero as n becomes larger.
The sequence converges to the value 0.
The sequence is decreasing as n increases.
The sequence converges to the value 0.
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the dice was thrown 35 times and following numbers were obtained prepare frequency table51423266142545361526254132141626333
This table shows the frequency of each number obtained after throwing the die 35 times
How to prepare frequency tableTo prepare a frequency table based on the numbers obtained from throwing a die 35 times, we can list the numbers from 1 to 6 and count the frequency of each number.
Numbers: 1, 2, 3, 4, 5, 6
Frequency: 5, 14, 6, 4, 5, 1
Based on the given numbers, the frequency table would look like this:
Number | Frequency
1 5
2 14
3 6
4 4
5 5
6 1
This table shows the frequency of each number obtained after throwing the die 35 times.
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You are given the great circle of a sphere is a length of 25 miles. What is the volume of the sphere
The volume of the sphere is approximately 3431.82 cubic miles.
To find the volume of a sphere, we need the radius of the sphere. The length of a great circle is the circumference of the sphere, which is related to the radius by the formula C = 2πr, where C is the circumference and r is the radius.
In this case, we are given that the length of the great circle is 60 miles. We can use this information to find the radius of the sphere.
C = 2πr
60 = 2πr
Divide both sides of the equation by 2π:
r = 60 / (2π)
r = 30 / π
Now that we have the radius, we can use the formula for the volume of a sphere:
V = (4/3)πr³
V = (4/3)π(30/π)³
V = (4/3)π(27000/π³)
V = (4/3)π(27000/π³)
V = (4/3)π(27000/π³)
V = (4/3)(27000/π²)
V = (4/3)(27000/9.87) (approximating π to 3.14)
V ≈ 3431.82 cubic miles
Therefore, the volume of the sphere is approximately 3431.82 cubic miles.
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Question
You are given the great circle of a sphere is a length of 60 miles. What is the volume of the sphere?
A scientist has two solutions, which she has labeled Solution A and Solution B. Each contains salt. She knows that Solution A is 65% salt and Solution B is 90% salt. She wants to obtain 150 ounces of a mixture that is 80% salt. How many ounces of each solution should she use?
The amount of solution A and B required are 60 and 90 ounces respectively.
Creating simultaneous equations for the problem:
Mass of solution A = a
Mass of solution B = b
a + b = 150 _____(1)
0.65a + 0.90b = 150×0.80
0.65a + 0.90b = 120 __(2)
From (1)
a = 150-b ____(3)
substitute (3) into (2)
0.65(150-b) + 0.90b = 120
97.5 - 0.65b + 0.90b = 120
0.25b = 120-97.5
0.25b = 22.5
b = 22.5/0.25
b = 90
a = 150 - b
a = 150 - 90
a = 60
Therefore , 60 ounces of solution A and 90 ounces of solution B is required.
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I need. Help with this question
Derivative of function is 5(2x + 4) * (x² + 4x + 6)⁴.
What is differentiation?
In arithmetic, the derivative of a function of a true variable measures the sensitivity modification of the perform price with relation to a change in its argument. Derivatives are a elementary tool of calculus.
Main body:
by using product rule;
Let = u = x² + 4x + 6
⇒ du/dx = 2x + 4 .
Now y = u⁵
⇒ dy/dx = 5u⁴ .
dy/dx = dy/dx * du/dx = 5u⁴ * (2x + 4)
= 5 * (x² + 4x + 6)⁴ * (2x + 4)
= 5(2x + 4) * (x² + 4x + 6)⁴
hence , derivative of function is 5(2x + 4) * (x² + 4x + 6)⁴.
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A boy wants to jump onto a carousel that is spinning at a rate of 14 revolutions per minute. if the carousel is 23 feet in diameter, how fast must the boy run to match the speed of the carousel and jump on?
a. 2.68 feet per second
b. 1,011.59 feet per second
c. 33.72 feet per second
d. 16.86 feet per second
Answer:
16.86 ft/s
Step-by-step explanation:
Given that,
Angular speed of a carousel, \(\omega=14\ rev/min\)
The diameter of the carousel, d = 23 feet
We need to find the speed of the carousel and jump on.
\(\omega=14\ rev/min=1.46\ rad/s\)
Radius, r = 11.5 feet
Let v is the velocity. So,
\(v=r\omega\\\\=11.5\times 1.46\\\\=16.79\ ft/s\)
Hernce, the correct option is (d) "16.86 ft/s"
How many cubicle blocks each with ages of length 2 cm are needed to fill a rectangular box that has inside dimensions 10 cm x 12 cm x 60 cm
we conclude that 900 cubes enter in the given box.
How many blocks are needed to fill the box?
We need to find the volumes of both figures.
The blocks are cubes of 2cm by 2cm by 2cm, then the volume of each block is:
\(V = (2cm)^3 = 8cm^3\)
The box has dimensions of 10cm by 12cm by 60cm, then the volume is:
\(V = 10cm*12cm*60cm = 7,200 cm^3\)
The number of cubes that enter in the box is N such that:
\(N*8cm^3 = 7,200cm^3\)
Solving for N, we get:
\(N = 7200cm^3/8cm^3 = 900\)
In this way, we conclude that 900 cubes enter in the given box.
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help please
A. 12
B. 6
C. 2
D. 15
Answer:
6
Step-by-step explanation:
2x + 3 = 15
- 3 -3
__________
2x = 12
_______
2 2
That cancels out 2x so x = 6
Answer:
The answer to this equation would be B. 6!
Step-by-step explanation:
2x + 3 = 15 Subtract 3 from left and right side. Variable needs to be left alone. 15 will turn into 12. 2x = 12 x= 6 since 2 x 6 = 12 or divide 12 by 2 and get 6Check Answer:
2(6) + 3 = 15
2x6 =12
12 + 3 =15
A 2-gallon container of disinfectant costs $20.48. What is the price per cup?
Answer:
$0.64 per cup
Step-by-step explanation:
There are 16 cups in 1 gallon, so the number of cups in 2 gallons is:
1 gallon: 16 cups
2 gallon = 2 x 1 gallon = 2 x 16 cups = 32 cups
So we need to find the price of each cup:
1 cup = ($20.48 / 32 cups) = $0.64 per cup.
The perimeter of an isosceles triangle is at most 27 cm. The base is 8 cm long. Find the possible lengths of the two congruent sides.
Answer:
9.5
Step-by-step explanation:
I did it
sorry if its wrong
seven less than 4 times a number, t
Answer:
-3+t
-3+t
-3 (times) 3
Step-by-step explanation:
Ty bought a new computer for $499. This brand depreciates at a rate of 12% of the original price per year. The value y of Ty's computer, x years after he purchased it, is found using an equation in the form y = mx + b. What is the approximate value of m?
Answer:
the approximate value of m is -0.12, indicating that the value of Ty's computer decreases by 0.12 (or 12%) each year.
Step-by-step explanation:
o express this depreciation rate as a slope in the equation y = mx + b, we need to determine how much the value changes (the "rise") for each year (the "run").
Since the value decreases by 12% per year, the slope (m) would be -12%. However, we need to express the slope as a decimal, so we divide -12% by 100 to convert it to a decimal:
m = -12% / 100 = -0.12
The piecewise function represents the amount of taxes owed, f(x), as a function of the taxable income, x. Use the marginal tax rate chart or the piecewise function to answer the questions.
Tax Bracket Marginal Tax Rate
$0–$10,275 10%
$10,276–$41,175 12%
$41,176–$89,075 22%
$89,076–$170,050 24%
$170,051–$215,950 32%
$215,951–$539,900 35%
> $539,901 37%
A piecewise function f of x in seven pieces. The function is defined by part 1, which is 0 point 10 times x for x less than or equal to 10,275; part 2, which is 0 point 12 times x minus 205 point 50 for 10,276 is less than or equal to x which is less than or equal to 41,175; part 3 which is 0 point 22 times x minus 4,323 for 41,176 is less than or equal to x which is less than or equal to 89,075; part 4 which is 0 point 24 times x minus 6,105 point 50 for 89,076 is less than or equal to x which is less than or equal to 170,050; part 5 which is 0 point 32 times x minus 9,070 point 32 for 170,051 is less than or equal to x which is less than or equal to 215,950; part 6 which is 0 point 35 times x minus 26,187 point 50 for 215,951 is less than or equal to x which is less than or equal to 539,900; and part 7 which is 0 point 37 times x minus 36,985 point 67 for x is greater than or equal to 539,901.
Part A: Using the method of your choice, demonstrate how to calculate the amount of taxes owed on a taxable income of $31,000. Show all work. (4 points)
Part B: Using the taxes owed from part A, determine the effective tax rate. Show all work. (4 points)
Part C: Compare the piecewise function to the marginal tax rate chart. How is the marginal tax rate chart represented in the piecewise function? (2 points)
Answer:
Part A: $3,415.50
B: 11.34%
Step-by-step explanation:
Part A: $31,000 is within the values 10,276≤x≤41,175, so use f(x)=0.12x-205.50
Part B: For the effective tax rate, divide the amount in part A by the taxable income
Part C: Compare both the taxable income and the effective tax rate to the income domains given and the % multiplier. This one is mostly about how you describe the situation, so I'll leave that up to you.
To calculate the taxes owed on a taxable income of $31,000, we use the appropriate equation for the tax bracket it falls into and substitute the value of x. The effective tax rate is calculated by dividing the amount of taxes owed by the taxable income and multiplying by 100. The piecewise function represents the marginal tax rate chart by using different equations for each tax bracket.
Explanation:Part A:
To calculate the amount of taxes owed on a taxable income of $31,000, we need to determine which tax bracket it falls into. Since $31,000 is greater than $10,275 but less than $41,175, it falls into tax bracket 2. To find the amount of taxes owed, we use the equation for tax bracket 2: f(x) = 0.12x - 205.50. Plugging in $31,000 for x, we get:
f(x) = 0.12 * 31000 - 205.50 = $3,574.50
Therefore, the amount of taxes owed on a taxable income of $31,000 is $3,574.50.
Part B:
To determine the effective tax rate, we divide the amount of taxes owed by the taxable income. Using the result from Part A (taxes owed = $3,574.50) and the taxable income of $31,000, we have:
Effective tax rate = (taxes owed / taxable income) * 100 = (3,574.50 / 31,000) * 100 ≈ 11.52%
Therefore, the effective tax rate on a taxable income of $31,000 is approximately 11.52%.
Part C:
The piecewise function represents the amount of taxes owed as a function of the taxable income. Each part of the function corresponds to a different tax bracket, with the equation for that tax bracket. The marginal tax rate chart is represented in the piecewise function by the different equations for each tax bracket. For example, the equation in part 1 of the function (f(x) = 0.10x) corresponds to the 10% marginal tax rate for the tax bracket $0-$10,275.
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What is the total payment
required to pay off a promissory
note issued for $400.00 at 12%
ordinary interest and a 90-day
term?
A. $460.00
C. $490.00
B. $410.80
D. $412.00
The total payment required to pay off a promissory note issued for $400.00 is $412.
Using this formula
Total payment=Promissory note+(Promissory note× Ordinary interest× 90 day term/360)
Where:
Promissory note=$400
Ordinary interest=12%
Let plug in the formula
Total payment= $400 + ($400 × 12% × 90 days ÷ 360 days)
Total payment= $400 + $12
Total payment= $412
Hence, the total payment required to pay off a promissory note issued for $400.00 is $412.
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will mark brainleist pls help
Answer:
x = 31°
Step-by-step explanation:
the sum of the 3 angles in a triangle = 180° , that is
x + 54° + 95° = 180°
x + 149° = 180° ( subtract 149° from both sides )
x = 31°
which value represents solutions to cos(π/4-x) = √2/2sinx, where x [0, 2π)
The solution of the trigonometric equation are, \(x=\frac{\pi}{2},\frac{3\pi}{2}\)
Trigonometric equation:
Given equation are,
\(cos(\frac{\pi}{4} -x)=\frac{\sqrt{2} }{2}sinx\)
We know that, \(cos(A-B)=cosA cosB+sinAsinB\)
\(cos(\frac{\pi}{4} -x)=\frac{\sqrt{2} }{2}sinx\\\\cos\frac{\pi}{4} *cosx+sin\frac{\pi}{4} *sinx=\frac{\sqrt{2} }{2}sinx\\\\\frac{\sqrt{2} }{2}cosx+\frac{\sqrt{2} }{2}sinx=\frac{\sqrt{2} }{2}sinx\\\\\frac{\sqrt{2} }{2}cosx=0\\\\cosx=0\\\\x=\frac{\pi}{2},\frac{3\pi}{2}\)
Hence, The solution of the trigonometric equation are, \(x=\frac{\pi}{2},\frac{3\pi}{2}\)
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\(( \frac{3}{4} - \frac{2}{3} ) \times 1 \frac{1}{5} \)
Answer: 0.1 or 1/10
Step-by-step explanation:
\(\left(\frac{3}{4}-\frac{2}{3}\right)\cdot \:1\frac{1}{5}\)
\(1\frac{1}{5}=\frac{6}{5}\)
\(\left(\frac{3}{4}-\frac{2}{3}\right)\cdot \frac{6}{5}\)
\(\frac{3}{4}-\frac{2}{3}\) \(=\frac{9}{12}-\frac{8}{12}\)
\(=\frac{1}{12}\)
\(\frac{6}{5}\cdot \frac{1}{12}\)
Cross, cancel common factor
\(\frac{1}{2}\cdot \frac{1}{5}\)
\(=\frac{1}{10}\)
Finn says that it is possible that the scale factor could've been a fraction.Fiona says that it is not possible for the scale factor to have been a fraction
it is not possible for the scale factor to have been a fraction
Explanation:
When a scale factpor is less than one in a dilation, a reduction is iad to occur
When a scale factor is greater than one in a dilation, an enlargement occur
In this case, the image is larger than the pre-image. The pre-image is the the original diagram while the image is the new diagram.
There is an increament in size of the diagram as the image is larger than the pre-image
From the above, an increse means greater than 1. As a result, it is not possible for the scale factor to have been a fraction
find the area asap i really need help 30 minutes left plzz
Answer:
45mm
Step-by-step explanation:
First, find the whole area of the square, which is 225 mm squared.
Then, we have to find the area of the shaded trapezoid. Remember, the area of the trapezoid is \(\frac{h(b^{1}+b^{2} }{2}\)
We get the area of the trapezoid to be 180 mm.
We subtract 180 from 225 mm to get 45 mm as our answer.
What is the answer 1/3 of x is 14
The required answer for 1/3 of x is 14 is x = 42.
What is an equation?In mathematics, an equation is a formula that expresses the equality of two expressions by connecting them with the equal sign = .
Now the given equation is,
1/3 of x is 14
Thus converting it into numerical expression.
So we have,
1/3 of x = 1/3 * x= x/3
Thus is equal to 14
Thus, the equation we get is,
x/3 = 14
To solve the above isolate x on one side and other terms to another.
Thus multiplying whole equation by 3 we get,
3*x/3 = 14*3
Simplifying we get,
x = 42
This is the required answer for the given expression.
Thus, the required answer for 1/3 of x is 14 is x = 42.
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Use 10 square model to find 12 is 10% of what number
Answer:
12 is ten percent of 120
Step-by-step explanation:
Does anyone know the value of x?
The value of x is 12.0
Calculation of the value:Since
We know that
Cos = Adjacent/Hypotenuse
So,
cos(24°) = 11/x
Now here we multiply the equation so that the value of x could come
So,
x = 11/cos(24°)
≈ 12.0
hence, we can conclude that The value of x is 12.0
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Answer:
The value of x is 12.0 to the nearest tenth.
Step-by-step explanation:
To find the value of x, use the cosine trigonometric ratio.
\(\boxed{\begin{minipage}{9 cm}\underline{Cos trigonometric ratio} \\\\$\sf \cos(\theta)=\dfrac{A}{H}$\\\\where:\\ \phantom{ww}$\bullet$ $\theta$ is the angle. \\ \phantom{ww}$\bullet$ $\sf A$ is the side adjacent the angle. \\\phantom{ww}$\bullet$ $\sf H$ is the hypotenuse (the side opposite the right angle). \\\end{minipage}}\)
From inspection of the given right triangle:
θ = 24°A = 11H = xSubstitute the values into the cosine trigonometric ratio and solve for x:
\(\implies \cos 24^{\circ}=\dfrac{11}{x}\)
\(\implies x=\dfrac{11}{\cos 24^{\circ}}\)
\(\implies x=12.0409990...\)
Therefore, the value of x is 12.0 to the nearest tenth.
You randomly draw a marble from a bag of marbles that contains 7 blue marbles 2 green marbles and 1 red marbles
Given the following:
7 blue marbles
2 green marbles
1 red marbles
We to find the probability of not drawing a blue marble.
We will be solving it in two ways.
First let's get the total marbles
Total Marble = 7 + 2 + 1 = 10
recall that probablity is number of favourable outcome divide by number of total outcome.
So,
probablity of Drawing a Blue Marble is = 7/10
probability of not Drawing Blue Marbles = 1 - Probability of Drawing Blue Marbles
= 1 - 7/10
= 10 - 7
10
= 3/10
OR
Probability of not Drawing Blue Marbles = Probablity of drawing Green or Red Marbles.
= 2/10 + 1/10
= 3/10
Therefore, the probability of not Drawing Blue Marbles is 3/10.
Granola bars are on sale for $0.50 each. If Brad paid $5 for granola bars, find how many bars he bought.
Answer:
10 bars
Step-by-step explanation:
1 3/7 ÷ 1/14 need help with this
Answer:
20
Step-by-step explanation:
First:
Convert any mixed numbers to fractions.
Then your initial equation becomes:
10/7÷1/14
Applying the fractions formula for division,
=10×14/ 7×1
=140/7
Simplifying 140/7, the answer is
=20
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If m = 34 and n = 5, what is the value of the following expression?
m - 5 • n + 2
A.
145
B.
7
C.
147
D.
11
\(\large\text{Hey there!}\)
\(\mathsf{m - 5\times n +2}\\\mathsf{= 34 - 5 \times 5+2}\\\mathsf{= 34 - \bold{25} + 2}\\\mathsf{= \bold{9} + 2}\\\mathsf{= \bf 11}\\\\\large\text{Therefore, your answer is:\huge \boxed{\textsf{Option D. 11 }}}\huge\checkmark\)
\(\large\text{Good luck on your assignment \& enjoy your day!}\\\\\frak{Amphitrite1040:)}\)