Pleaseee help. The longer base of an isosceles trapezoid measures 23 ft. The nonparallel sides measure 9ft, and the base angle measure 80 degrees. Find the length of a diagonal.
Answers
h = 9 * sin 80° = 9 * 0.9848 = 8.86 ft.
Then look at the right triangle, where a hypotenuse is 9 and one leg is 8.86. Another leg is x.
x² = 9²- 8.86²
x² = 81 - 78.4996
x = √ 2.5004
x = 1.58
23 - 1.58 = 21.42
Finally the diagonal:
d² = 21.42² + 8.86² = 458.8 + 78.4996 = 537.3
d = √537.3 = 23.18 ≈ 23 ft
Answer: D. 23 ft.
Related Questions
4th term of (4x-y)^9
Answers
[tex]\bf (4x-y)^9\implies \begin{array}{llll} term&coefficient&value\\ -----&-----&-----\\ 1&+1&(4x)^9(-y)^0\\ 2&+9&(4x)^8(-y)^1\\ 3&+36&(4x)^7(-y)^2\\ 4&+84&(4x)^6(-y)^3 \end{array}[/tex]
notice again, how did we get 84 for the 4th element's coefficient? well 36 * 7 / 3. and so on. And you can just expand it from there.
Solve x2 – 4 = 5 by graphing the related function.
Answers
+4 +4
x2=9
square root both the x and 9
x=3
Answer:
Refer graph attached below
Step-by-step explanation:
Given equation [tex]x^2-4=5[/tex]
We have to Solve the given equation [tex]x^2-4=5[/tex] graphically.
We first solve the given equation [tex]x^2-4=5[/tex]
Consider the given equation [tex]x^2-4=5[/tex]
Adding 4 both sides, we have
[tex]\Rightarrow x^2-4+4=5+4[/tex]
Simplify, we get,
[tex]\Rightarrow x^2=9[/tex]
[tex]\Rightarrow x^2-9=0[/tex]
To plot the graph let [tex]x^2-9=y[/tex] be the equation
It will be a parabola with vertex (0,9).
Refer graph attached below
Find an exact value. cosine of negative seven pi divided by twelve
Answers
Let x = -(7π)/12.
Then 2x = -(7π)/6.
Note that
cos(2x) = 2cos²x - 1, or
cos x = +/- √([1 + cos(2x)]/2)
Because -(7π)/6 is in the 3rd quadrant, with a reference angle of π/6.
cos(-7π/6) = -cos(π/6) = -√3/2 = -0.866.
Also, -(7π)/12 is in the 2nd quadrant, therefore it's cosine is negative.
Therefore, obtain
cos(-7π/12) = -√[0.5*(1 - 0.866)] = -0.2588.
Answer: -0.2588
Answer:
(the square root of 2 minus the square root of 6) / 4
Two lines, A and B, are represented by the following equations:
Line A: 3x + 3y = 12
Line B: x + y = 4
Which statement is true about the solution to the set of equations? (4 points)
It is (12, 4).
There are infinitely many solutions.
It is (4, 12).
There is no solution.
Answers
x + y = 4....multiply this entire equation by 3
3(x + y) = 3(4) = 3x + 3y = 12 ...this is the exact same line as the other equation.
This means ur lines are equivalent, they are the same line.
This means there is infinite solutions <==
A student and a professor each choose a number between 1 and 8 (1 and 8 are both possible choices). what is the probability that the two choose the same number
Answers
helpppppppppppppppppppppp
Answers
-2-0/2-1
-2/1
-2
Final answer: -2
Use the remainder theorem to determine the remainder when d4 + 2d2 + 5d − 10 is divided by d + 4.
Answers
The remainder theorem states that the answer when d + 4 is substituted into the whole equation, the remainder would be the answer divided by d + 4. Therefore:
d + 4 = 0
d = -4
Evaluating when d = -4:
d^4 + 2 * d^2 + 5 * d − 10
= (- 4)^4 + 2 * (- 4)^2 + 5 * (- 4) – 10
= 256 + 2 * 16 – 20 – 10
= 256 + 32 – 30
= 258
Therefore basing on the remainder theorem, the remainder would then be:
Remainder = 258 / (d + 4) ---> Answer
The profit a company earns every month depends of the amount of product sold, p, for $855 each and the amount spent in rent, utilities and other expenses, which always totals to $6,780. The CEO of the company earns 15% of this profit. How much does the CEO earn if the company sells 250 products in a given month?
A) $20,950.75
B) $28,458.50
C) $31,045.50
D) $34,650.75
Answers
To start of, first you multiply the product by the amount of how much of the product was sold, so you'd write it out as 855 x 250 which would equal $213,750.
Now you must subtract the expenses which have been listed as $6,780 so 213,750 - 6,780 would equal $206,970 left. But the company doesn't get all of it, only 15%. So, we multiply 206,970 by .15 and we get $31,045.50
This means your correct answer is C
Given 5n² + 6n + 7 = n² - 4n : a. Find the value of the discriminant. b. State the number and type of roots/solutions/zeros.[2 real, 2 imaginary, 1 real]
Answers
if you get a positive value, that means 2 real solutions
if you get 0, means 1 real solution only
if you get a negative value, is an imaginary root solution, same as saying no solution.
What is m∠DFE?
A. 78
B. 42
C. 19
D. 119
Answers
Angle DFB = (1/2)*(84+38)
Angle DFB = (1/2)*122
Angle DFB = 61
(Angle DFB) + (angle DFE) = 180
angle DFE = 180 - (Angle DFB)
angle DFE = 180 - 61
angle DFE = 119 degrees
---------------------------------------
Final Answer is choice D) 119 degrees
A quadratic equation is shown below:
4x^2 − 12x + 10 = 0
Part A: Describe the solution(s) to the equation by just determining the radicand. Show your work. (5 points)
Part B: Solve 2x^2 − 13x + 21 = 0 by using an appropriate method. Show the steps of your work, and explain why you chose the method used. (5 points)
Answers
the radicand is b²-4ac
if it is in form ax²+bx+c
when it is
greater than 0, then 2 real roots
equal to 0, then 1 real root
less than 0, then no real roots
so
a=4
b=-12
c=10
b²-4ac=(-12)²-4(4)(10)=144-160<0
so 0 real roots
B.
using quadratic formula because it is easier
for
ax²+bx+c=0
[tex]x=\frac{-b+/-\sqrt{b^2-4ac}}{2a}[/tex]
so
for 2x²-13x+21
a=2
b=-13
c=21
[tex]x=\frac{-(-13)+/-\sqrt{(-13)^2-4(2)(21)}}{2(2)}[/tex]
[tex]x=\frac{13+/-\sqrt{169-168}}{4}[/tex]
[tex]x=\frac{13+/-\sqrt{1}}{4}[/tex]
[tex]x=\frac{13+/-1}{4}[/tex]
x=(13+1)/4 or (13-1)/4
x=14/4 or 12/4
x=7/2 or 3
Exit Felix was given $125 for his birthday from his grandmother. He plans to put this money toward the purchase of a $250 skateboard. The remainder of the money he plans to earn mowing lawns for the rate of $35 each. What is the least number of lawns Felix will have to mow in order to have enough to buy the skateboard?
Answers
First let's set up an inequality.
35x ≥ 125
Now solve for x
125/35 = 3.6 (round up to nearest whole number)
x = 4
The answer is 4
Hope this helps! :)
The point $(r,\theta)$ in polar coordinates is $(7,5)$ in rectangular coordinates. what is the point $\left( 2r, \theta + \frac{\pi}{2} \right)$ in rectangular coordinates?
Answers
Final Answer:
The rectangular coordinates of the point[tex]$\left( 2r, \theta + \frac{\pi}{2} \right)$[/tex], where [tex]$(r, \theta)$[/tex] corresponds to the polar coordinates (7, 5), are approximately (-13.59, 11.54).
Step-by-step explanation:
In polar coordinates, a point is represented as [tex]$(r, \theta)$[/tex] , where [tex]$r$[/tex] is the distance from the origin, and $\theta$ is the angle with respect to the positive x-axis. In rectangular coordinates, the point is represented as (x, y).
Given that the point [tex]$(r, \theta)$[/tex] in polar coordinates is equivalent to the point (7, 5) in rectangular coordinates, we can express this relationship as:
[tex]\[ x = r \cos(\theta) \][/tex]
[tex]\[ y = r \sin(\theta) \][/tex]
For the given point $(7, 5)$, we have:
[tex]\[ x = 7 \cos(5) \][/tex]
[tex]\[ y = 7 \sin(5) \][/tex]
Now, you want to find the point [tex]$\left( 2r, \theta + \frac{\pi}{2} \right)$[/tex] in rectangular coordinates. This can be expressed as:
[tex]\[ x' = 2r \cos\left(\theta + \frac{\pi}{2}\right) \][/tex]
[tex]\[ y' = 2r \sin\left(\theta + \frac{\pi}{2}\right) \][/tex]
We know that [tex]$\cos\left(\theta + \frac{\pi}{2}\right) = -\sin(\theta)$[/tex] and [tex]$\sin\left(\theta + \frac{\pi}{2}\right) = \cos(\theta)$[/tex]. Substituting these into the equations:
[tex]\[ x' = -2r \sin(\theta) \][/tex]
[tex]\[ y' = 2r \cos(\theta) \][/tex]
Now, if we substitute the values of [tex]$r$[/tex] and [tex]$\theta$[/tex] from the given point (7, 5):
[tex]\[ x' = -2 \times 7 \times \sin(5) \][/tex]
[tex]\[ y' = 2 \times 7 \times \cos(5) \][/tex]
Calculating these values will give you the rectangular coordinates of the point $\left( 2r, \theta + \frac{\pi}{2} \right)$.
If triangle CDF ∼ triangle MKP, what is the value of x?
0.2
1.6
4.8
5.4
Answers
x=14.4/9
x=1.6
Answer:
The value of x is 1.6
Step-by-step explanation:
We have been given that triangle CDF ∼ triangle MKP.
Therefore, the ratio of the corresponding sides are equal.
Hence, we have
[tex]\frac{DC}{MK}=\frac{CF}{MP}[/tex]
Plugging the known values, we get
[tex]\frac{9}{1.8}=\frac{8}{0.x}[/tex]
Cross multiplying, we get
[tex]9x=8\times1.8[/tex]
Divide both sides by 9
[tex]x=\frac{8\times1.8}{9}[/tex]
Simplifying, we get
[tex]x=8\times10.2\\\\x=1.6[/tex]
The value of x is 1.6
(01.03 MC)
Which of the following is a step in simplifying the expression x multiplied by y to the power of 4 over x to the power of negative 5 multiplied by y to the power of 5, the whole to the power of negative 3.?
x to the power of negative 3 multiplied by y, the whole over x to the power of negative 8 multiplied by y to the power of 2.
x to the power of negative 3 multiplied by y to the power of negative 12, the whole over x to the power of negative 5 multiplied by y to the power of 5.
x to the power of negative 3 multiplied by y, the whole over x to the power of negative 5 multiplied by y to the power of 5.
x to the power of negative 3 multiplied by y to the power of negative 12, the whole over x to the power of 15 multiplied by y to the power of negative 15.
Answers
[tex]\frac{x^{-3}y^{12}}{x^{15}y^{-15}}[/tex] shows the correct step that is from the simplification from the given expression [tex][\frac{xy^4}{x^{-5}y^5}]^3[/tex]. Option d is correct.
Simplification is defined as the solution making tendency to expressions.
Here, expression [tex][\frac{xy^4}{x^{-5}y^5}]^3[/tex]
Multiply the whole power 3 in the square bracket.
Gives,
⇒[tex]\frac{x^{-3}y^{12}}{x^{15}y^{-15}}[/tex]
Thus, [tex]\frac{x^{-3}y^{12}}{x^{15}y^{-15}}[/tex] shows the correct step that is from the simplification from the given expression [tex][\frac{xy^4}{x^{-5}y^5}]^3[/tex].
Learn more about simplification here:
https://brainly.com/question/8675627
#SPJ2
Anderson has $50 in his savings account. He deposits $5 every week. His father also deposits $20 into the account every time Anderson mows the lawn. His savings account balance can be shown with the following expression:
50 + 5w + 20m
Part A: Identify a coefficient, a variable, and a constant in this expression. (3 points)
Part B: If Anderson saves for 10 weeks and mows the lawn 2 times, how much will he have in his account? Show your work to receive full credit. (4 points)
Part C: If Anderson had $85 in his savings account, would the coefficient, variable, or constant in the expression change? Why? (3 points)
Answers
Part A: 5 is the coefficient, w is the variable, 50 is the constant
Part B: 10 x 5 = 50 + 2 x 20 = 40+ 50 = $140
Part C: the constant,50,would change and become 85. Hope this helps :)
Part B [tex] 10*5=50 ~20*2=40 50+40=90[/tex]
part c it would change to 85
I really hope this helps you ^-^
What important information must be included to find a sum of a series?
Answers
Answer:
Important information like the common difference, 1st term, the # of terms; the last term must be included to find the sum of a series.
Convert 0.00001 to a power of 10.
104
10−4
105
10−5
Answers
In scientific notation, 0.00001 is equal to 1 × 10⁻⁵.
FURTHER EXPLANATIONScientific notation is a way of expressing very big or very small numbers conveniently and with the appropriate number of significant figures. The general expression for the scientific notation is shown below:
M × 10ⁿ
M is a number that is greater than or equal to 1 but less than 10 and n is the number of times you have to multiply M by 10 to get the number.
The value of n can be easily determined by looking at the decimal point and counting the number of times it is moved to the left or to the right until a proper value of M is obtained.
The steps are as follows:
Locate the decimal point in the given. If it's a whole number, there is an implied decimal point at the end or to the right of the last digit.Move the decimal point to the right or to the left until you get a number that is greater than or equal to 1 but less than 10. This will be the value of M.Count how many decimal places you moved through to get the value of M. This will be the numerical value of the exponent, n.NOTE: If the decimal point was moved to the left, then the
exponent n will be written as positive (+x).
If the decimal point was moved to the right, then the
exponent n will be written as negative (-x).
Applying the steps to the problem:
STEP 1: 0.00001
The decimal point is four places away from the digit 1.
STEP 2: To get a number M that is greater than or equal to 1 but less than 10, the decimal point must be moved five places to the right and placed after the digit 1. (000001 or 1)
STEP 3: Since the decimal point was moved five places to the right, the exponent should have a magnitude of 5 and a negative sign. (1 × 10⁻⁵)
LEARN MORE significant figures brainly.com/question/11905420 standard notation brainly.com/question/296147 operation in scientific notation brainly.com/question/169955Keywords: scientific notation, exponential notation
Scientific notation is a form that can be used to represent very large or very small numbers
The option that gives the correct representation of 0.00001 is scientific notation (standard form) is the option;
10⁻⁵Reason:
Required: To convert 0.00001 to a power of 10
Solution:
The method to convert a decimal to a scientific notation is given by moving the decimal point to the right of the first significant digit then multiply the result by 10 raised to the negative of the number of places the decimal point is moved
The general form of the scientific notation is [tex]a \times 10^b[/tex]Where;
a = The number having only one digit to the left of the decimal point
b = The number of places the decimal point is moved (b is positive moving left and negative for moving right)
The given decimal number is 0.00001
Therefore, the decimal can be moved 5 places to the right to give;
0.00001 = 1.0 × 10⁻⁵ = 10⁻⁵
The correct option is 10⁻⁵Learn more here:
https://brainly.com/question/17478191
Help my please with math
Answers
-7x - 9y = -7 (2nd)
multiply (1st) by 7 and (2nd) by 8
56x + 49y = -105 (multiply 7)
-56x - 72y = -56 (multiply 8)
--------------------------------------------add
-23y = -161
y = 7
8x + 7y = -15
8x + 7(7) = -15
8x + 49 = -15
8x = -64
x = -8
answer
x = -8 and y = 7
Terry earns $22,500 annually. What is the total amount of each paycheck if she is paid biweekly?
Answers
52 weeks per year
biweekly means she gets paid every 2 weeks
so 52/2 = 27
22500/27 = 833.33 each paycheck
Write the expression in standard form.
three divided by quantity three minus twelve i.
Answers
Answer:
What was the answer?!?!!?!? >-<
There are 9 different positions on a baseball team. if a team has 18 players how many different line-ups can the team make?
Answers
Final answer:
To find the number of different line-ups a team can make, we use permutations. Using the formula for permutations, we arrive at the answer of 437,760 different line-ups.
Explanation:
To find the number of different line-ups a team can make, we need to use the concept of permutations. Since there are 9 positions on a baseball team and 18 players, we can arrange the players in a line-up using the formula for permutations:
P(n, r) = n! / (n-r)!
Where n is the total number of players (18) and r is the number of positions (9). Substituting the values, we get:
P(18, 9) = 18! / (18-9)! = 18!/9! = 437,760.
Therefore, there are 437,760 different line-ups that the team can make.
A new truck that sells for 29,000 depreciates 12% each year. What is the decay factor b?
Answers
Write an algebraic equation for the following. The product of three and a squared number is twice the sum of the number and four.
Answers
x is the unknown number
A circle has its center at (5, -2) and a radius of 3 units. What is the equation of the circle?
Answers
the equation of the circle is : (x-5)² +(y+2)² = 9
Determine whether the forces are pulling at right angles to each other. Explain. 3.5 lb, 6.2 lb, resultant force 9.1 lb
A. yes; 3.52 + 6.22 = 9.12
B. no; a + b > c
C. no; 3.52 + 6.22 ≠ 9.12
D. yes; a + b > c
Answers
A² + B² = C²
Investigating the vector values,
A² + B² = (3.5 lb)² + (6.2 lb)² = 50.69 lb²
C² = (9.1 lb)² = 82.81 lb²
Since the Pythagorean theorem is not satisfied by the given set of forces then, the forces are not in right angle.
The answer to the question is letter C.
A county has been experiencing a mean of 35.935.9 motor vehicle deaths each year. Use the Poisson distribution to answer the following. a. Find the mean number of deaths per day. b. Find the probability that on a given day, there are more than 2 motor vehicle deaths. c. Is it unusual to have more than 2 motor vehicle deaths on the same day
Answers
Mean per day = 35.935.9/year * 1 year/365 days = 98.45
b. Probability is expressed as a fraction or percentage of an event happening. In this case, we should determine when each day, the amount of accidents is 3, 4, 5, 6, and so on. It would be much easier to find the probability of the accident happening once or twice a day.
probability for accidents once and twice a day: 1/98.45 + 2/98.45 = 0.03
Probability for accidents more than twice a day: 1 - 0.03 = 0.97
c. It is not unusual due to the high probability of it happening as quantified in letter b.
Marisol receives total employee benefits that are 14.5% of her gross annual pay. If Marisol has a gross annual pay of $50,000, how much in total employee benefits does she receive?
Answers
If Marisol has a gross annual pay of $50,000 and receives total employee benefits of 14.5% of her gross annual pay, then you can find how many benefits she receives, using proportion:
[tex] \$50,000 - 100\%,\\ \$x - 14,5\% [/tex].
Then
[tex] \dfrac{50000}{x} =\dfrac{100}{14.5} ,\\\\ x=\dfrac{50000\cdot 14.5}{100}=500\cdot 14.5=7250 [/tex].
In total she will receive $50,000+$7250=$57250.
Answer: $57250.
The depreciating value of a semi-truck can be modeled by y = Ao(0.83)x, where y is the remaining value of the semi, x is the time in years, and it depreciates at 17% per year.
An exponential function comes down from the positive infinity and passes through the points zero comma seventy thousand. The graph is approaching the x-axis. What is the value of the truck initially, Ao, and how would the graph change if the initial value was only $50,000?
$70,000, and the graph would have a y-intercept at 50,000
$60,000, and the graph would have a y-intercept at 70,000
$70,000, and the graph would fall at a slower rate to the right
$70,000, and the graph would fall at a faster rate to the right
Answers
The initial value when the time is zero is 70000. An initial value is normally shown as the point where the graph crosses the y-axis.
If the initial value was to be 50000, the curve would have crossed the y-axis at 50000
The correct answer is the first statement
Answer:
Option A is correct.
Step-by-step explanation:
We are given that, the model for the depreciating value of a semi-truck is,
[tex]y = A_{O}(0.83)^x[/tex]
1. It is required to find the value of the truck initially i.e. when x= 0.
So, substituting x= 0, we have,
[tex]y = A_{O}(0.83)^0[/tex]
i.e. [tex]y = A_{O}\times 1[/tex]
i.e. [tex]y = A_{O}[/tex]
Since, the graph passes through the point (0,70,000).
Thus, we get, [tex]A_{O}=70,000[/tex]
Hence, the initial value is 70,000.
2. It is required to find the value of the truck initially i.e. when x= 50,000
That is, when x= 0, the value of y= 50,000.
Graphically, it means that the graph would cut y-axis at the point (0,50,000).
Thus, the y-intercept would be at 50,000.
Change in the initial value will not have any affect on the rate of the graph.
So, from the above, we get,
Option A is correct.
If f(x) = –x2 + 3x + 5 and g(x) = x2 + 2x, which graph shows the graph of (f + g)(x)?
Answers
(f + g)(x) = –x2 + 3x + 5 + x2 + 2x
(f + g)(x) = 5x + 5
Answer:
Given the functions: [tex]f(x)= -x^2 +3x+5[/tex] and [tex]g(x) = x^2+2x[/tex]
Now, calculate first [tex](f+g)(x)[/tex] ;
[tex](f+g)(x) = f(x) + g(x)[/tex]
Substitute the given values we have;
[tex](f+g)(x) = -x^2+3x+5+x^2+2x[/tex]
Combine like terms;
[tex](f+g)(x) =5x+5[/tex]
Let y = [tex](f+g)(x)[/tex]
Then, we have y = 5x+5
Now, Graph the equation of the line y =5x +5
Using slope intercept form: An equation of line is given by :
y = mx +b ; where m is the slope of the line and b is the y-intercept.
On comparing we get;
m = 5 (Since, slope is positive which means a line moves upward on a graph from left to right)
Now, find the intercepts of the equation: y=5x+5;
x-intercepts: The graph or line crosses the x-axis i.,e
Substitute y = 0 and solve for x;
0 = 5x +5
Subtract 5 on both sides we get;
-5 = 5x
Divide both sides by 5 we get;
x = -1
x-intercepts= = (-1, 0)
Similarly for y-intercept:
Substitute the value of x= 0 and solve for y;
y = 5(0)+5
y = 5
y-intercepts = (0, 5)
Now, using these point we can draw a graph of function [tex](f+g)(x) =5x+5[/tex] as shown below in the attachment.