To solve for the amount of pure silver in the alloy mixture, use the alloy mixture equation in algebra. After setting up and solving the equation, we find that roughly 22.83 ounces of pure silver are used to produce the desired alloy,
Explanation:This problem can be solved using the alloy mixture equation, which is used to determine how to create a desired mixture by blending two substances of different concentrations. Let's denote the amount of pure silver used as 'x'. So, the equation can be set up as follows:
($30.48 × x + $21.35 × 52) / (x + 52) = $24.76.
After multiplying through by (x + 52) and doing algebra, you will find that x (ounces of pure silver) equals approximately 22.83 ounces.
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A basket contains six apples and four peaches. You randomly select one piece of fruit and eat it. Then you randomly select another piece of fruit. The first piece of fruit is an apple and the second piece is a peach. Find the probability of this occuring.
Answer as a fraction: 4/15
Answer as a decimal: 0.267
The decimal version is approximate rounded to three decimal places.
=============================================================
Explanation:
6 apples, 4 peaches
6+4 = 10 pieces of fruit total
The probability of picking an apple is 6/10 = 3/5
After you pick and eat the apple, there are 10-1 = 9 pieces of fruit left. Also, the probability of picking a peach is 4/9, as there are 4 peaches out of 9 fruit left over.
Multiply out 3/5 and 4/9 to get (3/5)*(4/9) = (3*4)/(5*9) = 12/45 = 4/15
Using a calculator, 4/15 = 0.267 approximately.
Answer:
Fraction: [tex]\frac{4}{15}[/tex]
Decimal: [tex]0.2667[/tex]
Percent: 26.67%
Step-by-step explanation:
If the basket contains six apples and four peaches then the Total amount of fruit in the basket is (6+4) 10 pieces of fruit.
You reach in and randomly pick out an apple. Since there are only 4 apples, the probability of this happening was [tex]\frac{4}{10}[/tex] , and now there are only 9 pieces of fruit in the basket.
Now you reach in and randomly pick out a peach. Since there are 6 peaches, the probability of this happening is [tex]\frac{6}{9}[/tex]. Now we can find the probability of both of these things happening one after another by multiplying both probabilities together
[tex]\frac{4}{10} * \frac{6}{9} = \frac{24}{90}[/tex]
[tex]\frac{24}{90} = \frac{4}{15}[/tex] ...... simplified
So we can see that the probability of you picking out an apple and a peach in sequence is [tex]\frac{4}{15}[/tex] or [tex]0.2667[/tex]
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A car travelled a distance of D = 199 km (kilometers) for T = 4.3 hours at a constant rate. Use the formula
D=R.T
to find the speed (R) of the car in km per hour. Round your answer to the nearest tenth. Do not include the units in
your answer.
Answer:
i will answer this in 5 mins
Step-by-step explanation:
Which of the following is the radical expression of a to the four ninths power?
4a9
9a4
fourth root of a to the ninth power
ninth root of a to the fourth power
Step-by-step explanation:
[tex]\sqrt[n]{a^m}=a^\frac{m}{n}\\\\\large\huge\boxed{a^\frac{4}{9}=\sqrt[9]{a^4}}[/tex]
The radical expression which represents a to the four ninths power is:
Ninth root of a to the fourth power.
Step-by-step explanation:We are asked to find the radical expression for the word phrase:
a to the four ninths power.
i.e. mathematically it could be written as:
[tex]a^{\dfrac{4}{9}}[/tex]
Now, we know that:
[tex]a^{\dfrac{m}{n}}=(a^m)^{\dfrac{1}{n}}=\sqrt[n]{a^m}[/tex]
Here we have:
[tex]m=4\ \text{and}\ n=9[/tex]
Hence, the expression cold be written as:
[tex]a^{\dfrac{4}{9}}=\sqrt[9]{a^4}[/tex]
What is the value of sin n
The value of sin n depends on the angle n and represents the ratio of the length of the side opposite an angle to the length of the hypotenuse in a right triangle.
Explanation:The value of sin n depends on the angle n. In mathematics, sine is a trigonometric function that represents the ratio of the length of the side opposite an angle to the length of the hypotenuse in a right triangle. It is a periodic function that oscillates between -1 and 1 as the angle increases or decreases.
For example, if n is 0 degrees, then sin n is 0. If n is 90 degrees, then sin n is 1. If n is 180 degrees, then sin n is 0 again. The values of sin n for angles in between can be determined using a calculator or trigonometric tables.
It's important to note that in mathematics, the angle n is typically measured in radians rather than degrees. In radians, a full circle is equal to 2π, so an angle of 360 degrees is equal to 2π radians.
Find X. Round to the nearest tenth if necessary.
Answer:
x = 9
Step-by-step explanation:
When 2 chords intersect inside a circle then the product of the measures of the parts of one chord is equal to the product of the measures of the parts of the other chord, that is
2 × x = 3 × 6, that is
2x = 18 ( divide both sides by 2 )
x = 9
A recipe for muffins calls for 1/2 quart of buttermilk, 1/3 quart of skim milk, and 1/16 quart of oil. How many total quarts of liquid ingredients does the recipe call for?
To find the total quarts of liquid ingredients for the muffin recipe, add together 1/2 quart of buttermilk, 1/3 quart of skim milk, and 1/16 quart of oil, resulting in 43/48 quarts in total after converting to a common denominator and summing up.
The question asks how many total quarts of liquid ingredients are called for in a muffin recipe, which includes 1/2 quart of buttermilk, 1/3 quart of skim milk, and 1/16 quart of oil. To find the total, you need to add these measurements together.
Adding the fractions:
1/2 quart of buttermilk1/3 quart of skim milk1/16 quart of oilFirst, find a common denominator, which would be 48 in this case. Converting each fraction:
24/48 (for 1/2 quart)16/48 (for 1/3 quart)3/48 (for 1/16 quart)Adding these fractions together gives us 43/48 quarts as the total amount of liquid ingredients needed for the recipe.
What is the slope-intercept form of the equation of the line graphed in the figure?
A. y = 5⁄3x + 1
B. y = –5⁄3x – 1
C. y = –3⁄5x + 1
D. y = 3⁄5x + 1
Answer:
D
Step-by-step explanation:
It crosses the y-axis at y=1 so the y-intercept is b=1.
The slope is count straight up from (-5,-2) to you are on the same horizontal level as (5,4). The rise is 6
Once you get the same horizontal level as (5,4), you will count straight over to you get to (5,4). The run is 10.
Slope=rise/run=6/10=3/5.
Or you could find slope by using the slope formula. I like to line up two pairs of points and subtract then put 2nd difference over first difference. Like so,
(5,4)
-(-5,-2)
----------
10 6
So the slope is 6/10 or 3/5 after reducing.
Slope-intercept form of a line is y=mx+b
Plug in m=3/5 and b=1
y=3/5 x +1
So the answer is D.
If rs 500 amounts to Rs 725 at 9% simple interest in sometime ,what will Rs 600amount to at 11% in same time?
To solve the student's question, we calculated the time period from the initial amount and interest rate, then used that to determine the amount that Rs 600 would become at an 11% interest rate over the same period, which is Rs 930.
Explanation:The essence of the question revolves around the concept of calculating the future amount of money based on the principal, the rate of interest, and the time for which the money is lent or invested. In the given scenario, we have a principal of Rs 500 which, at a 9% simple interest rate, amounts to Rs 725 over a certain period.
To find the equivalent amount for Rs 600 at an 11% interest rate over the same period, we need to first understand the amount of interest accrued in the first situation and use its proportion to calculate the second.
The formula for simple interest is Interest = Principal × rate × time.
First, let's calculate the interest earned on the initial Rs 500:
Amount = Principal + InterestRs 725 = Rs 500 + InterestInterest = Rs 725 - Rs 500Interest = Rs 225Now, we can calculate the time period using the simple interest formula:
Interest = Principal × rate × timeRs 225 = Rs 500 × 0.09 × timeTime = Rs 225 / (Rs 500 × 0.09)Time = 5 yearsKnowing the time period, we can find the amount that Rs 600 would amount to at an 11% interest rate over the same period:
Interest = Rs 600 × 0.11 × 5 yearsInterest = Rs 330Amount = Principal + InterestAmount = Rs 600 + Rs 330Amount = Rs 930So, Rs 600 will amount to Rs 930 at an 11% simple interest rate over the same time period of 5 years.
Write the expression in complete factored form. 2n^2(q+8)-(q+8)=
(q+8)(2n^2-1)
I think this is the correct form.
a woman bought some large frames for $13 each and some small frames for $9 each at a closeout sale if she bought 21 frames for $209 fine how many of each type she bought.
Answer:
5 large frames
16 small frames
Step-by-step explanation:
$13 times 5 large frames = $65
$9 times 16 small frames = $144
144+65=209
Which is the graph of linear inequality 2 y > x – 2?
Answer:
Third graph
Step-by-step explanation:
We are determine whether which of the given graphs is that of the linear inequality [tex]2y>x-2[/tex].
We know that, on the graph the greater than sign ([tex]>[/tex]) represents the shaded part above the line and less than sign ([tex]<[/tex]) represents the shaded region below the line.
While the signs [tex]\leq[/tex] or [tex]\geq[/tex] is denoted by a solid line on the graph.
Therefore, the third graph represents the given inequality.
Answer:
The graph in the attached figure
Step-by-step explanation:
we have
2y > x-2
The solution of this inequality is the shaded area above the dotted line 2y=x-2
The graph in the attached figure
The area of the triangle is given by the functions area of triangle A:x2 + x area of triangle B: x2 - 3x which functions represents the sum of the areas of the two triangles? 1. 4x 2.-4x 3.x2-4x 4.2x2-2x
Answer:
4. 2x^2 - 2x.
Step-by-step explanation:
Adding the 2 functions:
Area of the 2 triangles = x^2 + x + x^2 - 3x
= .2x^2 - 2x
Answer:
OPTION 4
Step-by-step explanation:
Let be f(x) the function that represents the area of Triangle A:
[tex]f(x)=x^2 + x[/tex]
Let be g(x) the function that represents the area of Triangle B:
[tex]g(x)=x^2 - 3x[/tex]
Then, you need to add the area of Triangle A and the area of Triangle B in order to find the sum of the areas (Let be h(x) the function that represents the sum of the the areas of triangles A and B):
Therefore, this is:
[tex]h(x)=(x^2 + x)+(x^2 - 3x)=x^2 + x+x^2 - 3x=2x^2-2x[/tex]
You can notice that this matches with the option 4.
6x-7y=90 x intercept
Answer:
15
Step-by-step explanation:
To find the x-intercept, set y=0 and solve for x:
6x -0 = 90
x = 90/6 = 15
The x-intercept is the point (15, 0).
u want to leave a 15% tip on a $33 meal. What is the total cost for the night?
Answer: The total cost would be 37.95
Step-by-step explanation:
The total cost for the night, including a 15% tip on a $33 meal, is $37.95.
Explanation:To calculate the total cost for the night, we need to add the meal cost and the tip. For a $33 meal, a 15% tip would be calculated using the formula tip = meal cost x tip percentage/ 100. In this case, tip = $33 x 15/100= $4.95. Therefore, the total cost for the night (meal cost + tip) would be $33 + $4.95 = $37.95.
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what is the mean between 500, 372,536, 369, 328, 412 & 561
Answer:
439.7.
Step-by-step explanation:
The mean of these number is
(500+372+536+ 328 +369+412+561) / 7
=439.7.
Final answer:
To determine the mean of the numbers 500, 372, 536, 369, 328, 412, and 561, you add them together and divide by the total count, which results in a mean of approximately 439.71.
Explanation:
To find the mean of a set of numbers, you add up all the numbers and then divide by the number of values in the set. The numbers given are 500, 372, 536, 369, 328, 412, and 561. Let's calculate the mean step by step:
Add up all the numbers: 500 + 372 + 536 + 369 + 328 + 412 + 561 = 3078.Count the number of values: There are 7 numbers in total.Divide the total sum by the number of values: 3078 ÷ 7 = 439.7142857.The mean (average) of the numbers is approximately 439.71.
derivative of f(x)=5.2x+2.3
Answer:
5.2
Step-by-step explanation:
Since you have a linear function, asking for derivative is equivalent to asking for the slope.
The slope of y=5.2x+2.3 is 5.2 so the derivative is 5.2 .
However, if you really want to use the definition of derivative, you may.
That is, [tex]\lim_{h \rightarrow 0} \frac{f(x+h)-f(x)}{h}[/tex].
We know [tex]f(x)=5.2x+2.3[/tex] so [tex]f(x+h)=5.2(x+h)+2.3[/tex]. All I did was replace any x in the 5.2x+2.3 with (x+h) to obtain f(x+h).
Let's plug it into our definition:
[tex]\lim_{h \rightarrow 0} \frac{f(x+h)-f(x)}{h}[/tex]
[tex]\lim_{h \rightarrow 0} \frac{[5.2(x+h)+2.3]-[5.2x+2.3]}{h}[/tex]
Now we need to do some distributing. I see I need this distributive property both for the 5.2(x+h) and the -[5.2x+2.3].
[tex]\lim_{h \rightarrow 0} \frac{5.2x+5.2h+2.3-5.2x-2.3}{h}[/tex]
There are some like terms to combine in the numerator. The cool thing is they are opposites and when you add opposites you get 0.
[tex]\lim_{h \rightarrow 0} \frac{5.2h}{h}[/tex]
There is a common factor in the numerator and denominator. h/h=1.
[tex]\lim_{h \rightarrow 0}5.2[/tex]
5.2
[tex]f(x)=5.2x+2.3\\f'(x)=5.2[/tex]
A triangle has two sides of lengths 10 and 14. What value could the third side be?
Answer:B, C, D, E.
Step-by-step explanation:
The third side of a triangle with two sides measuring 10 and 14 units must be greater than 4 and less than 24 units. This is determined using the Triangle Inequality Theorem.
The possible values for the third side of a triangle with sides of lengths 10 and 14 can be found using the Triangle Inequality Theorem.
Add the two given side lengths: 10 + 14 = 24.
To find the range of possible values for the third side, subtract the two given side lengths from the total: 24 - 10 = 14, and 24 - 14 = 10.
Therefore, the third side of the triangle must have a length greater than 4 but less than 24.
What is the quotient ?
Answer
The answer after you divide one number by another
dividend ÷ divisor = quotient
Example: in 12 ÷ 3 = 4, 4 is the quotient
Which of the following is a polynomial?
O A. x2-1
O B. -2
O c. 1 +2
OD.
5
6. 1-7x + 4) = 18
7. 5 p + 10 = 10
Answer:
[tex]\large\boxed{6.\ x=-\dfrac{12}{7}}\\\boxed{7.\ p=0}[/tex]
Step-by-step explanation:
[tex]6.\\\\1-7x+4=18\\(1+4)-7x=18\\5-7x=18\qquad\text{subtract 5 from both sides}\\-7x=12\qquad\text{divide both sides by (-7)}\\x=-\dfrac{12}{7}\\\\7.\\\\5p+10=10\qquad\text{subtract 10 from both sides}\\5p=0\qquad\text{divide both sides by 5}\\p=0[/tex]
Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.
Match each exponential equation to its percent rate of change.
Answer:
60% growth, 40% decay, 20% decay, 80% decay, 40% growth. In that order :)
Step-by-step explanation:
The number inside the parenthesis is always 1+a number. So for every .1 up or down, that's 10% growth or decay(up being growth, down being decay).
Answer:
Step-by-step explanation:
A). In exponential equation [tex]80(1.6)^{t}=20[/tex], 1.6 is the common ratio which represents [(1 + 60% of 1) = 1.6] a growth of 60%.
B). In [tex]20(0.6)^{t}=1.2[/tex] common ratio is 0.6 [(1 - 40% of 1)] which represents 40% decay.
C). In [tex]60(0.8)^{t}=1.4[/tex] common ratio is 0.8 [(1 - 20% of 1)] which represents 20% decay.
D). In [tex]40(0.2)^{t}=1.6[/tex] common ratio is 0.2 [(1 - 80% of 1)] which represents 80% decay.
E). In [tex]1.2(1.4)^{t}=80[/tex] common ratio is 1.4 [(1 + 40% of 1)] which represents 40% growth.
What's the answer of..
[tex] \frac{4a {}^{2} }{16a {}^{5} \: b {}^{2} } b {}^{5} [/tex]
Answer:
[tex]\large\boxed{\dfrac{1}{4}a^{-3}b^3=\dfrac{b^3}{4a^3}}[/tex]
Step-by-step explanation:
[tex]\dfrac{4a^2b^5}{16a^5b^2}\qquad\text{use}\ \dfrac{x^n}{x^m}=x^{n-m}\\\\=\dfrac{4}{16}a^{2-5}b^{5-2}=\dfrac{1}{4}a^{-3}b^3\qquad\text{use}\ x^{-n}=\dfrac{1}{x^n}\\\\=\dfrac{b^3}{4a^3}[/tex]
When Θ = 5 pi over 6, what are the reference angle and the sign values for sine, cosine, and tangent? Θ' = negative pi over 6; sine and cosine are positive, tangent is negative. Θ' = 5 pi over 6; sine and tangent are positive, cosine is negative Θ' = pi over 6; sine is positive, cosine and tangent are negative Θ' = negative 5 pi over 6; sine is positive, cosine and tangent are negative
Answer:
Option C is correct.
Step-by-step explanation:
[tex]\theta=\frac{5\pi }{6}[/tex]
We need to find reference angle and signs of sinФ, cosФ and tanФ
We know that [tex]\theta=\frac{5\pi }{6}radians[/tex] is equal to 150°
and 150° is in 2nd quadrant.
So, Ф is in 2nd quadrant.
And In 2nd quadrant sine is positive, while cos and tan are negative
The reference angle Ф' is found by: π - Ф
=> Ф = 5π/6
so, Reference angle Ф' = π - 5π/6
Ф' = 6π - 5π/6
Ф' = π/6
So, Option C Θ' = pi over 6; sine is positive, cosine and tangent are negative is correct.
Which is the best estimate of the circumference of this circle?
Answer:
12 is the best estimate
Answer:
option A.
Step-by-step explanation:
We have to find the circumference of the given circle with radius 2 units.
Since formula to calculate circumference of a circle is = 2πr
Where r = radius of the circle.
Circumference = 2 × (3.14) × (2)
= 4 × 3.14
= 12.56
So approximate value will be option A.
Is the following relation a function? {(3, 2), (3, −2), (1, −4), (−1, 2)}
Step-by-step explanation:
no it is not because if 3 maps on 2, then it cannot map on -2 at the same time
A relation is considered a function if each input has only one output. The given set contains the input '3' with two different outputs '2' and '-2', therefore, it is not a function.
Explanation:In mathematics, a relationship is considered a function if for every input there is only one output. In other words, no two pairs should have the same first element yet different second elements.
If we look at the set of ordered pairs provided, we have {(3, 2), (3, -2), (1, -4), (-1, 2)}. We can see that the input '3' corresponds to both '2' and '-2'. Since there are two outputs for the same input, we can determine that this relation is not a function.
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What is the surface area of the rectangular pyramid below?
A. 525 units
B. 675 units2
C. 3375 units2
D. 300 units
The answer is 675 units²
The surface area of the rectangular pyramid is 675 units².
What is Surface Area?The area is the space occupied by a two-dimensional flat surface. It is expressed in square units. The surface area of a three-dimensional object is the area occupied by its outer surface.
We have to find the surface area of the rectangular pyramid.
So, to find the surface we need to find SA of each face
= (15 x 15) + (15 x 15)/2 x 4
= 225 + 225 x 2
= 225 + 450
= 675 units²
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What are the zeros of Ax) = x2 - 12x + 36?
O A. x= -6 and x = 6
O B. x=-6 only
O c. x = 6 only
O D. x=-4 and x = 9
SUBMIT
Answer:
The correct option is C
Step-by-step explanation:
x2 - 12x + 36
The coefficient of 1st term will be multiplied by the constant:
1*36 = 36
Now find two numbers whose product is 36 and whose addition is 12.
6*6 = 36
6+6 =12
Now break the middle term:
x^2-6x-6x+36 = 0
Now group the terms:
(x^2-6x) - (6x-36) = 0
Now take common of each group:
x(x-6)-6(x-6) = 0
(x-6) (x-6) =0
(x-6)=0 , (x-6) =0
x-6=0 , x-6=0
x=0+6 , x=0+6
x=6 , x=6
Thus the correct option is C. x=6 only....
Using the information given, determine the answer:
Circumference of a circle with area 36π square centimeters
Answer:
12π
Step-by-step explanation:
The area of a circle is π*r^2, where r is the radius. Therefore, given that the area is π*36, the radius is 6.
The circumference of a circle is 2πr, which in this case is 2*6*π=12π.
which of the following is equal to the fraction below? (4/5)^6
Answer:
Step-by-step explanation:
Next time, please share the answer choices.
(4/5)^6 is equivalent to:
4^6 4096
---------- = -----------
5^6 15625
Answer:
4^6/5^6
Step-by-step explanation:
PLEASE ANYONE I NEED YOUR HELP. For the points A(-2, 10) and B(-4,6). Find each of the following.
a. AB
b. The coordinates of the midpoint of AB
c. The slope of AB
Answer:
a. _ √20 , about 4.472136
b - (-3, 8)
c- Slope of 2
Step-by-step explanation:
Calculator
Answer:
a. [tex]AB=2\sqrt{5}[/tex]
b. [tex](-3,8)[/tex]
c. [tex]2[/tex]
Step-by-step explanation:
You have the points:
A(-2,10)
where i will call: [tex]x_{1}=-2[/tex] and [tex]y_{1}=10[/tex]
B(-4,6)
where i will call: [tex]x_{2}=-4[/tex] and [tex]y_{2}=6[/tex]
for our calculations we are going to need the distance in x between the points ([tex]\Delta x[/tex] )and the distance in y between the points ([tex]\Delta y[/tex]):
[tex]\Delta x =|x_{2}-x_{1}|=|-4-(-2)|=|-4+2|=|-2|=2\\\Delta y =|y_{2}-y_{1}|=|6-10|=|-4|=4[/tex]
a. To find AB (the distance between point A and point B) you need The Pythagorean Theorem:
[tex](AB)^2=(\Delta x)^2+(\Delta y)^2\\(AB)^2=(2)^2+(4)^2\\(AB)^2=4+16\\\\AB=\sqrt{20}\\ AB=2\sqrt{5}[/tex]
b. to find the coordinates of the midpoint we average the x-coordinates and the y coordinates
[tex]x_{mid}=\frac{x_{1}+x_{2}}{2} =\frac{-2-4}{2}=\frac{-6}{2} =-3\\y_{mid}=\frac{y_{1}+y_{2}}{2} =\frac{10+6}{2}=\frac{16}{2} =8\\[/tex]
so the midpoint [tex](x_{mid},y_{mid})[/tex] is at: [tex](-3,8)[/tex]
c. For the slope we use the slope formula:
[tex]slope=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}=\frac{6-10}{-4-(-2)}=\frac{-4}{-2}=2[/tex]
The slope is equal to 2.