The efficiency of a lever is 70%.
From the question, we have
Efficiency = F_out/F_in
=350*1/100*5 = 350/500 = 0.7*100% = 70%
Efficiency:
Efficiency is the proportion of work done by a machine or throughout a process to the overall amount of energy or heat used.
Efficiency is the degree to which a given input may produce a specific outcome with the least amount of waste possible. Efficiency is the capacity to minimize wastage of resources, labor, time, and energy when completing an action or achieving a goal.
The ratio of usable output to total input can be used to objectively measure efficiency. The efficiency of the device is defined as the ratio of energy converted to a useable form to the original amount of energy supplied.
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What is the measure of angle B in this triangle?
Enter your answer in the box.
Answer:
Step-by-step explanation:
First, you add the degrees available to you, next, you need to count the variable and add them together, in this case, your problem should show, 40+20-30 for your degrees, which is 30 degrees. Next, you have an "x" and a "2x," therefore you add them together to get 3x. After doing this, you get to your 2-step equation, which should look like 30 + 3x = 180. You get 180 because that is the length of the triangle, it should always be 180. You can now start by subtracting 180 - 30, we switch the + and - when doing the first part. Now, you should have gotten, 150, with 150 you can divide it by 3, you divided by 3 because you switch the division and the multiplication, now you do 150 divided by 3, which is 50. YOUR ANSWER IS: x = 50.
2) Elena has some bottles of water that each holds 17 fluid ounces. a) Write an equation that relates the number of bottles of water (b) to the total volume of water (w) in fluid ounces. b) How much water is in 51 bottles? Show your work. c) How many bottles does it take to hold 51 fluid ounces of water? Show your work.
Answer:
(a)
Since each bottle holds 17 fluid ounces, then if b is the number of bottles of water and w is the total volume of water in fluid ounces we can set the following equation:
[tex]w=17b\text{.}[/tex](b)
Now, if b=51,
[tex]w=17\times51=867.[/tex]Therefore, in 51 bottles there are 867 fluid ounces.
(c)
If w=51, solving for b we get:
[tex]\begin{gathered} 51=17b, \\ \frac{51}{17}=b, \\ b=3. \end{gathered}[/tex]
Therefore, it would take 3 bottles to hold 51 fluid ounces.
Which Story can be represented as 36 divided by 4 A. Jim has 36 pennies. May has four more pennies Than Jin.B. Jin has 4 fewer pennies than May. May has 36 pennies. C.Jin has 4 pennies. May has 36 times as many pennies as Jin.D.Jin has 36 pennies. She shares the pennies equally among 4 friends.
D is the answer.
In all the other cases the operations that we will have to make are not divisions.
In case A we have an addition.
In case B we have a substraction.
In case C we have a multiplication.
The correct story which an be represented as 36 divided by 4 is,
D. Jin has 36 pennies. She shares the pennies equally among 4 friends.
We have to given that,
All expressions are,
A. Jim has 36 pennies. May has four more pennies Than Jin.
B. Jin has 4 fewer pennies than May. May has 36 pennies.
C. Jin has 4 pennies. May has 36 times as many pennies as Jin.
D. Jin has 36 pennies. She shares the pennies equally among 4 friends.
Hence, In all the other cases the operations that we will have to make are not divisions.
In case A we have an addition.
In case B we have a subtraction.
In case C we have a multiplication.
In case of D;
D. Jin has 36 pennies. She shares the pennies equally among 4 friends.
This shows the operation division.
As, Each friends get, 36 / 4 = 9 pennies
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Suppose that you are headed toward a plateau 25.1 meters high. If the angle of elevation to the top of the plateau is 16.5, how far are you from the base of the plateau? meters (Round your answer to the nearest tenth.)
Suppose that you are headed toward a plateau 25.1 meters high. If the angle of elevation to the top of the plateau is 16.5, how far are you from the base of the plateau? meters (Round your answer to the nearest tenth.)
we have that
tan(16.5)=25.1/x
x is the missing distance
solve for x
x=25.1/tan(16.5)
x=84.7 m
the answer is 84.7 meters5. Jim owns a farm that has been passed down through his family. The taxassessment on his farm is $399,000. The local tax rate is $6.01 per $100 of theassessment. What is Jim's annual property tax?
Given:
The assessment value = $399,000.
The local tax rate is $6.01 per $100 of the assessment.
Required:
We need to find the annual property tax.
Explanation:
[tex]A\text{nnual property tax = }\frac{\text{\$6.01}}{100}\times\text{the assessment value}[/tex][tex]A\text{nnual property tax = }\frac{\text{\$6.01}}{100}\times399000[/tex][tex]A\text{nnual property tax = \$23979.90.}[/tex]Final answer:
[tex]A\text{nnual property tax = \$23,979.90.}[/tex]Find an nth-degree polynomial function with real coefficients satisfying the given conditions. If you are using a graphing utility, use it to graph the function and verify the real zeros and the given function value.n=34 and 4i are zeros;f(-1)=85F(x) = ________
Given that at n=3: 4 and 4i are zeros:
Then:
[tex]\begin{gathered} (x-4)(x-4i)(x+4i)\Rightarrow(x-4)(x^2-(4i)^2) \\ (x-4)(x-4i)(x+4i)\Rightarrow(x-4)(x^2+16) \\ (x-4)(x-4i)(x+4i)\Rightarrow x^3+16x-4x^2-64 \\ (x-4)(x-4i)(x+4i)\Rightarrow x^3-4x^2+16x-64 \end{gathered}[/tex]Hence the function is:
[tex]F=x^3-4x^2+16x-64[/tex]Which of the following points lies on the graph pf the equation 2x + 6y = 6?A. (-3, 0)B. (-2, 9)C. (-3, 2)D. (2, 6)
Answer:
[tex]C[/tex]Explanation:
Here, we want to get the point that lies on the given graph
To get this, if we substitute the x value and y value into the function, we should get the value on the right-hand side of the equation, which is 6
Let us look at the 3rd option:
[tex]2(-3)\text{ + 6\lparen2\rparen = -6 + 12 = 6}[/tex]From what we can see here, the random choice was correct and thus, C is the correct answer
In a case where this was incorrect, we simply substitute another point and continue this until we arrive at the correct answer choice
What is the solution to the inequality 2-2x > -20
To determine the solution for the given inequality, you have to solve it for x:
[tex]2-2x>-20[/tex]First, pass 2 to the right side of the inequality by applying the opposite operation to both sides of it:
[tex]\begin{gathered} 2-2-2x>-20-2 \\ -2x>-22 \end{gathered}[/tex]Next, note that the x-term is multiplied by "-2", to reach the value of x you have to cancel the said multiplication. For this, you have to divide both sides of the expression by "-2"
Now, keep in mind, that when you divide or multiply an inequality by a negative number, the direction of the inequality gets inversed. This means that the symbol "greater than, >" will tur into the symbol "less than. <":
[tex]\begin{gathered} -\frac{2x}{-2}<-\frac{22}{-2} \\ x<11 \end{gathered}[/tex]The solution for this inequality will be the values of x less than 11, symbolically: x < 11
A laptop has ablisted price of $739.98 befire tax. If the sales tax rate is 8.75%, find the total cost of the laptop with sales tax included.
Total cost of laptop after sales tax is included = $804.73
Explanation:
price before sales tax = $739.98
Sales tax rate = 8.75%
Total cost of laptop after sales tax = $739.98 × (100% + 8.75%)
= $739.98 × (1 + 0.0875)
= 739.98 × 1.0875
= $804.73
Total cost of laptop after sales tax is included= $804.73
UVW is a regular triangle and the length of UV is 3 meters. What is the length of UW?A) 2 mB) 3 mC) 6 mD) 9 m
When a polygon is regular, all its sides are congruent (that is, they have the same length).
So, if the triangle is regular and one of the sides has a length of 3 meters, therefore all sides have a length of 3 meters.
Correct option: B.
a is the midpoint of segment XY.find the value of x and the length of XY
ANSWER
x = 3, XY = 18
EXPLANATION
We have that A is the midpoint of XY. It means that A divides XY into 2 equal parts.
This means that:
XA = AY
We have that:
XA = 3x
AY = 5x - 6
=> 3x = 5x - 6
Collect like terms:
3x - 5x = -6
-2x = -6
Divide through by -2:
x = -6 / -2
x = 3
That is the value of x.
Since A is the midpoint of XY and XA = AY, then:
XY = 2XA or XAY
So:
XY = 2XA
XY = 2 * 3x = 2 * 3(3)
XY = 2 * 9
XY = 18
That is the value of XY.
(1 4/7)_____-(15/21)
(1 4/7)
_____
-(15/21)
To solve;
we will cange the division to multiplication. By doing that 15/21 becomes 21/15
That is;
[tex]\frac{14}{7}\times-\frac{21}{15}[/tex]7 can divide 21 to give 3
Hence;
[tex]\frac{14}{1}\times-\frac{3}{15}[/tex]3 can also divide 15 to give 5
[tex]\frac{14}{1}\times-\frac{1}{5}[/tex]we will now multiply
[tex]=\frac{-14}{5}[/tex][tex]=-2\frac{4}{5}[/tex]Help please I want to know how to solve this not just the answer!!
Answer:
20 overtime hours
Step-by-step explanation:
overtime starts at 40 hours anything after that would be considered overtime
Complete all of the following steps to for each problem below.Write C for combine (add) or D for difference (D)Write (+) if the sum will be positive or (-) if the sum will be negativeDetermine the final answer8 + -2 = -9 + -12 = -35 + 25 = -19 + 40 =
Answer:
+6
Step-by-step explanation:
We have to solve the following expression:
8 + (-2)
The + sign before the parenthesis means that the signal of the terms inside the parenthesis stay the same. So
8 + (-2) = 8 - 2 = +6
The answer is +6.
An investor invested a total of 57000 into two bonds. One bond paid 3% simple interest, and the other paid 2 7/8% interest. The investor earned a total of $1676.25 in annual interest. How much was originally invested in each account?
Answer:
$30,000 (at 3%) and $27,000 (at 2 7/8%)
Explanation:
The investor invested a total of 57000
• Let the amount invested at 3% simple interest = x
,• Then, the amount invested at 2 7/8% simple interest = 57000-x
Recall the formula for simple interest:
[tex]Simple\: Interest=\frac{Principal\times Rate\times Time}{100}[/tex]Interest at 3%
[tex]\begin{gathered} S\mathrm{}I\mathrm{}=\frac{x\times3\times1}{100} \\ =\frac{3x}{100} \\ =0.03x \end{gathered}[/tex]Interest at 2 7/8%
[tex]\begin{gathered} SI=\frac{(57000-x)\times2\frac{7}{8}\times1}{100} \\ =\frac{2.875(57000-x)}{100} \\ =0.02875(57000-x) \end{gathered}[/tex]Total Interest
The investor earned a total of $1676.25 in annual interest. Therefore:
[tex]\begin{gathered} 0.03x+0.02875(57000-x)=1676.25 \\ 0.03x+1638.75-0.02875x=1676.25 \\ 0.03x-0.02875x=1676.25-1638.75 \\ 0.00125x=37.5 \\ x=\frac{37.5}{0.00125} \\ x=30,000 \end{gathered}[/tex]Thus, the amount invested at 3% simple interest = $30,000
The amount invested at 2 7/8% simple interest = 57,000-30,000 = $27,000
ctice 3.4.PS-19 Use the expression 6.5u - (10 =2) + 13 to answer 9–10. 9. Which part of the expression represents a quotient? Describe its parts. 10. Which part of the expression represents a product of two factors? Describe its p 9. The part of the expression that represents a quotient is (10=2). (Use the operation symbols in the math palette as needed. Do not simplify.) In this quotient, 6 is the dividend and 5U is the divisor
10 is the dividend while 2 is the divisor
Here, from the part that represents the quotient, we want to get the divisor and the dividend
From the question, the part that represents a quotient is given as;
[tex]\frac{10}{2}[/tex]Now, when we speak of the dividend, we mean the numerator of the fraction, and when we talk of the divisor, we are talking about the denominator
In simpler terms, what we want to divide is the dividend while what we are dividing with is the divisor
With respect to the given question, 10 is the dividend while 2 is the divisor
Pls help!!!! asapppp
The percentage decrease in the price of the stock is 0.72%
The initial price of the technology stock = $9.66
The new price of the technology stock = $9.59
The decrease in price = The initial price of the technology stock - The new price of the technology stock
Substitute the values in the equation
= 9.66 - 9.59
Subtract the terms
= $0.07
The percentage of decrease in price = (The decrease in price / The initial price of the technology stock) × 100
Substitute the values in the equation
= (0.07 / 9.66) × 100
= 0.72 %
Hence, the percentage decrease in the price of the stock is 0.72%
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the cone has a diameter of 10.5 inches and height of 6.75 inches. what is the volume of the cone? (hundredths place)the ball has a diameter of 8 1/2inches what Is the volume of the sphere? (hundredths place)the difference between the two volumes is(round to the nearest hundredth)
where,
r is the base radius of the cone
h is the perpendicular height of the cone
In this case,
r = 10.5 / 2= 5.25in
h = 6.75in
[tex]\begin{gathered} \text{Therefore} \\ \text{volume of cone}=\frac{\pi\times5.25^2\times6.75}{3}=194.83in^3 \end{gathered}[/tex]Volume of a ball is given by
[tex]\text{volume of ball =}\frac{4}{3}\times\pi\times r^3[/tex]where r is the radius of the ball
in this case,
[tex]r=\frac{8\frac{1}{2}}{2}=4.25in[/tex]Therefore
[tex]\text{Volume of ball = }\frac{4\times\pi\times4.25^3}{3}=321.56in^3[/tex][tex]\begin{gathered} \text{The difference betw}een\text{ the two volumes=321.56-194.83}=126.73 \\ =126.73in^3 \end{gathered}[/tex]Hope earns $12.35 an hour plus time and a half for weekend work. Last week she worked her regular 45 hours plus 16 hours of overtime on the weekend.What was her total pay for the week?
Answer:
$852.23
Explanation:
Given the hourly rate as $12.35, let's go ahead and determine what Hope earns per hour for weekend work as seen below;
Time and a half rate (Overtime rate) = 1.5 x 12.35 = $18.53
So if Hope worked her regular 45 hours plus 16 hours of overtime on the weekend, we can go ahead and determine her total pay as seen below;
Total pay = Regular wages + Overtime Wages
= (12.35 x 45) + (18.53 x 16)
= 555.75 + 296.48
= $852.23
Given: The base of the pyramid is a regular pentagon.13 ft5 ftWhat is the lateral area of the pyramid?O 100108.3O 150O162.5
The Solution.
The lateral area of the given pyramid is the total area of the 5 triangular faces of the pyramid.
So, we have
[tex]\text{Lateral Area of the pyramid = 5(}\frac{1}{2}bh)[/tex]In this case,
[tex]b=5\text{ ft, h=13 ft}[/tex]Substituting these values in the formula above, we get
[tex]\text{Lateral Area of the pyramid = 5}\times\frac{1}{2}\times5\times13[/tex][tex]\text{Lateral Area of the pyramid = }\frac{25\times13}{2}=\frac{325}{2}=162.5ft^2[/tex]Hence, the correct answer is 162.5 square feet (option 4).
The following picture has the question that has me troubled can you show me how to get to the answer
Given that:
[tex]f(x)=\sqrt[]{x},x_0=8,dx=0.07[/tex]Find the change.
[tex]\begin{gathered} \nabla f=f(8+\text{0}.07)-f(8) \\ =f(8.07)-f(8) \\ =\sqrt[]{8.07}-\sqrt[]{8} \\ =0.0123474175 \end{gathered}[/tex]Find the estimate value.
[tex]\begin{gathered} df=\frac{1}{2\sqrt[]{8}}\cdot0.07 \\ =0.0123743687 \end{gathered}[/tex]Determine the approximate error.
[tex]\begin{gathered} |\nabla f-df|=|0.0123474175-0.0123743687| \\ =0.0000269512 \\ \approx0.00002 \end{gathered}[/tex]Option B is correct.
Drag and drop the angles and line segments into the correct category to identify those that are chords, Inscribed angles, and central angles in the figure. The center of the circle is C. C E F DEF EF DCF DE Chords Inscribed Angles Central Angles
Given data:
The given figure is shown.
The chords are,
EF
DE
The inscribed angle is ∠DEF.
The central angle is ∠DCF.
Thus, EF and DE are chords. ∠DEF is inscribed angle, and ∠DCF is cenral angle.
After a dilation with center (0,0), the image of DB is D'B'. IDB = 4.5 and D'B' = 18, the scale factor of this dilation is (1) (3) (2) 5 (4) 4
We can write the length of DB like this:
[tex]4.5=\frac{9}{2}[/tex]Now, to find the scale factor of the dilation, we have to solve for k the following equation:
[tex]\frac{9}{2}k=18[/tex]then, we have the following:
[tex]\begin{gathered} \frac{9}{2}k=18 \\ \Rightarrow9k=18\cdot2=36 \\ \Rightarrow k=\frac{36}{9}=4 \\ k=4 \end{gathered}[/tex]therefore, the scale factor is k=4
you own 5 pairs of jeans and want to take 2 of them on vacation with you. in how many ways can you choose 2 pairs of jeans
SOLUTION:
Step 1:
In the question, we are given the following:
you own 5 pairs of jeans and want to take 2 of them on vacation with you.
In how many ways can you choose 2 pairs of jeans?
Step 2:
The details of the solution are as follows:
From this question, we can see clearly that this is an application of selection under combinatorial analysis:
[tex]n\text{ C}_r=\text{ }\frac{n!}{r!(\text{ n - r \rparen}!}[/tex][tex]\begin{gathered} Now\text{, we have that:} \\ \text{n = 5} \\ \text{r = 2.} \\ Then,\text{ we have that:} \\ 5\text{ C}_2\text{ = }\frac{5!}{2!\text{ \lparen 5- 2\rparen}!}=\text{ }\frac{5!}{2!3!}=\frac{5\text{ x 4 x 3}!}{2!\text{ x 3}!}=\frac{20}{2}=\text{ 10 ways} \end{gathered}[/tex]CONCLUSION:
The final answer is:
[tex]10\text{ ways}[/tex]
Write the equation in equivalent exponential form.log (1) base 6 = 0The equivalent exponential form is(Type an equation.)
Answer
The equivalent exponential form is 6⁰ = 1
Explanation
Given:
[tex]\log_61=0[/tex]Solution:
Using the definition of a logarithm:
[tex]\begin{gathered} \log_bx=y \\ \\ \Rightarrow b^y=x \end{gathered}[/tex]Thus, the given equation in equivalent exponential form is
[tex]\begin{gathered} \log_61=0 \\ \\ \Rightarrow6^0=1 \end{gathered}[/tex]The equivalent exponential form is 6⁰ = 1
6×(11_6)÷2= do get this
Ayden, remember the order of operations PEMDAS.
1. Solve the Parentheses First
2. Solve the Exponents
3. Solve the Multiplication and Division
4. Finally, solve the Addition and Subtraction
Solving our exercise, we have:
6× (11 - 6) ÷ 2 =
6 x 5 / 2 =
30/2 =
Congratulations, Ayden! You did it!
The figure is rotated 360° clockwise with the origin as the center of rotation. Which graph represents the rotated figure?
Given
The figure is rotated 360° clockwise with the origin as the center of rotation. Which graph represents the rotated figure?
Answer
After the rotation of 360 degrees, a figure comes back to original position
Option A is correct
Please get help with this for I have tried many times to get the correct answers for each but still could not
A dilation of a point with a factor k is given by:
[tex](x,y)\rightarrow(kx,ky)[/tex]In this case the dilation factor is ; which means that we need to multiply each component of the vertexes by two. After doing this we get the following graph for the original and final polygon:
From the figure we can answer the questions.
a)
Longest side length of the original figrue: 3 units
Longest side lenght of the final figure: 6 units.
b)
Longest side length of the final figure = 2 x Longest side length of the original figure.
c)
For a positive scale final figure is always bigger than the original one, therefore, the stament is False.
d)
Any dilation creates a similar figure since we are not changing the angles, only the lengths. Therefore the statement is True
This is the last question we have been stuck on it is there anyway you can help us out
Clearly,
[tex]1.3\cdot10^{12}[/tex]Is the largest number.
That's because it has more zeros due to its exponent is the most bigger of the four options.
AT"U"V is the translation of AT"U"V. what is the translation rule? ("A" is actually a triangle)
we know that
The coordinate of point U is (-7,8) see the image
The coordinate of point U' is (7,0) see the image
so
The rule of the trnslation is 14 units to the right and 8 units down
therefore
the rule is
(x,y) ------> (x+14,y-8)