Answers
Answer:
20
Step-by-step explanation:
We can solve for the unknown base using Pythagorean's theorem.
Remember Pythagorean's theorem goes as such:
[tex]a^2+b^2=c^2[/tex]
Where a and b are the two legs and c is the hypotenuse. We know one leg and the hypotenuse so we can insert our known values and solve for the unknown.
[tex]15^2+b^2=25^2\\225+b^2=625\\b^2=400\\b=20[/tex]
Or using trigonometry:
Note this is a 45-45-90 triangle, therefore all angles are known.
I'll use the sin function with the B angle.
[tex]sin(45)=\frac{b}{25} \\25*sin(45)=b\\17.67=b[/tex]
I'm assuming this problem was not made for trig, although the answer is still close.
Related Questions
How many ways can five of the nine us supreme court justices agree? (With solution)
(This is Combinations and Permutations)
Answers
The number of ways can five of the nine us supreme court justices agree is 3024 ways.
How to compute the value?The number of ways that five of the nine us supreme court justices agree will be calculated thus:
= 9! / 5!
= (9 × 8 × 7 × 6 × 5 × 4 × 3 × 2) / (5 × 4 × 3 × 2)
= 3024
There'll be 3024 ways.
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√ 81 )^2 I can't figure this out. Sorry to bother anyone!
Answers
Answer: 81
Step-by-step explanation: The square root and the squared function cancel each other out
The area of rectangle A is bigger than the area of rectangle B
Work out the lowest possible integer value of x.
A=
2x-3
5 cm
B
3 cm
X+2
Answers
The lowest possible integer value of x is 3 such that (x ≥ 3).
What is referred as the inequalities?An inequality depicts the relationship between two non-equal values in such an algebraic expression. Inequality symbols can indicate that one of the two variables is greater than, greater or equal to, equal to some other value.For the given question;
The area of rectangle A is bigger than the area of rectangle B.
The sides of the rectangle A are 2x-3 and 5 cm.
Area = length×breadth
Area A = (2x - 3)(5)
Area A = 10x - 15
The sides of the rectangle B are x = 2 and 3 cm.
Area = length×breadth
Area B = (x + 2)3
Area B = 3x + 6
As area B > area B
Then,
10x - 15 ≥ 3x + 6
Solving the inequality;
10x - 3x ≥ 6 + 15
7x ≥ 21
x ≥ 3
Thus, the minimum value of the x is 3 to make the area A bigger than Area B.
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which set of mixed numbers has a difference less than 1
1 1/2-1 1/9
3 3/4-2 1/7
2 4/5-1 1/3
2 7/9- 1 1/3
Answers
Only [tex]$1\frac{1}{2} - 1\frac{1}{9} = \frac{7}{18}[/tex] is less than 1.
We have a set of mixed numbers.
We have to identify which set of mixed numbers has a difference less than 1.
What are Mixed Numbers ?A mixed number is a whole number, and a proper fraction represented together. It generally represents a number between any two whole numbers. Any mixed fraction can be converted into normal fraction using the formula -
[tex]X\frac{Y}{Z} =\frac{Z\times X+Y}{Z}[/tex]
According to the question -
Let us solve them one by one (for difference to be less than 1, the denominator should be less than numerator) -
A = [tex]$1\frac{1}{2} - 1\frac{1}{9} = \frac{7}{18}[/tex] B = [tex]$3\frac{3}{4} - 2\frac{1}{7} = \frac{45}{28}[/tex]C = [tex]$2\frac{4}{5} - 1\frac{1}{3} = \frac{22}{15}[/tex]D = [tex]$2\frac{7}{9} - 1\frac{1}{3} = \frac{13}{9}[/tex]Hence, only [tex]$1\frac{1}{2} - 1\frac{1}{9} = \frac{7}{18}[/tex] is less than 1.
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Lindsey is building a skateboard ramp. She wants the ramp to be 1 foot tall at the end and she wants it to make a 15^{\circ} angle with the ground. What length of board should she buy for the ramp itself? Round to the nearest foot.
Answers
The term "length" is used to describe an object's size or the separation between two points. Lindsey must buy 4 feet of the board for the ramp itself.
What is meant by length?The term "length" refers to the measurement or size of something from end to end. In other terms, it is the greater of the upper two or third dimension of a geometric shape or object.
Distance exists estimated in length. The length contain the dimension of distance in the International System of Quantities. The majority of measurement systems select a base unit for length from which all other units exists derived. The meter serves as the foundational unit of length in the International System of Units.
A rectangle, for instance, has length and width as its dimensions.
1/x = 15°
x = 1/sin 15°
simplifying the above equation, we get
x = 3.9ft
x ≈ 4 ft
Therefore, the value of x ≈ 4 ft.
Lindsey must buy 4 feet of the board for the ramp itself.
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Consider the functions f(x) = 4x² - x and g(x) = 2x + 5.
f • g(-3) =
g • f(-3) =
Answers
Answer:
[tex]{ \tt{f•g(x) = 4(2x + 5) {}^{2} }} \\ = { \tt{4(4 {x}^{2} + 20x + 25)}} \\ = { \tt{ {8x}^{2} + 80x + 100}} \\ \\ { \tt{f•g( - 3) = 8 {( - 3)}^{2} + 80( - 3) + 100 }} \\ { \tt{f•g( - 3) = 72 - 240 + 100}} \\ { \tt{f•g( - 3) = - 68}} \\ \\ \\ { \tt{g•f(x) = 2( {4x}^{2}) + 5 }} \\ { \tt{ = {8x}^{2} + 5 }} \\ { \tt{g•f( - 3) = 8 {( - 3)}^{2} + 5}} \\ { \tt{g•f( - 3) = 77}}[/tex]
Below are graphs of functions over the interval [-4, 4]. Find the following for each function:
The domain
Zeros of the function
Intervals where the function is positive and intervals where it is negative
Answers
The positive interval is (0,2) and the negative range is calculated as (-4,0) and (2,4).
A graph is used to show the relationship between variables on a coordinate plane.
The domain of the function is [-4,4].
The zeros are: -2,0 and 2.
The positive interval is between (0,2).
The range of negative values is (-4,0) to (2,4). This is the set of x values in the graph. The graph demonstrates that the x value is between -4 and 4.
Thus, the domain is [-4,4]. The zeros of the function: Where it crosses the x- axis. The graph touches the x-axis when it is at -2,0 and 2. As a result, the function has the following zeros:-2,0 and 2.
Positive interval:
On the graph, positive values range from x = 0 to x = 2.
Consequently, the positive interval is (0,2).
Negative duration:
This is the x values when the function gives a negative result.
The graph shows negative values from x = -4 to x = 0, then from x = 2 to x = 4.
The negative range is therefore (-4,0) and (2,4).
Hence, the positive interval is (0,2) and the negative range is (-4,0) and (2,4).
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Given f(x) = 2 cos x, find the exact value of f (pi/6) in simplest form with a rational
denominator.
Answers
Using trigonometric functions, the value of 2 cos x is equals to √3.
What are trigonometric functions?One of the six mathematical functions used to express the side ratios of right triangles, the trigonometric function includes the sine (sin), cosine (cos), tangent (tan), cotangent (cot), secant (sec), and cosecant (csc). The graphic shows these six trigonometric functions in respect to a right triangle.
Cos (π/6) = √3/2
So. f(x) = 2 cos x
⇒ f(x) = 2 cos(π/6)
⇒ f(x) = 2 × √3/2
f(x) = √3
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Bob is making a model of an ant for a play. Find the scale factor of the model if the ant is 1/2 inch long and the model is 1 foot long.
Answers
The model's scale factor if the ant is 1/2 inch long as well as the model is 1 foot long. = 24 inch or 2 foot.
What exactly is a scale factor?The Scale Factor is employed to scale shapes in different dimensions. Geometry teaches us about numerous geometrical shapes in two and three dimensions. The scale factor is a metric considering similar figures that appear the same but have distinct scales or measures.
How do you calculate the scale factor?The basic formula for computing this same scale factor is, Scale factor = Dimension of the new shape x Dimension of the original shape If indeed the original figure is scaled up, then the formula is expressed as Scale factor = Larger figure dimensions /Smaller figure dimensions.
According to the given data:The size of the ant = 1/2 inch.
the model size is = 1 foot.
= 1 foot = 12 inch
The scale factor of the model = Larger figure dimensions ÷ Smaller figure dimensions.
= 12/.5
= 24 inch or 2 foot
The model's scale factor if the ant is 1/2 inch long as well as the model is 1 foot long. = 24 inch or 2 foot.
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betty worked at the golf course during the summer after 8th grade. after working for 2 weeks she added her earnings to the gifts she got for graduation and found she had $750. after four more weeks of work she had a total of 870$.
Plss help immidiatly
What does the y intercept represent in this situation?
Write the equation in slope intercept form
Answers
The y-intercept is the amount she got as gifts during her graduation.
The equation in slope intercept form is $630 + $60b
What does the y-intercept represent?The slope intercept form is used to write equations for equations for linear equations with two variables. The graph for a slope intercept form is a straight line.
The form for slope intercept form is: y = mx + b
Where:
y = y coordinatem = slopex = x coordinateb = y interceptThe y-intercept is the constant. It represents the point where the slope touches the y-axis.
The first step is to determine how much are earnings are and how much the gift is.
The equations that would be used to determine this are:
a +2b = 750 equation 1
a + 4b = 870 equation 2
Where:
a = gift
b = amount earned weekly while working on the golf course
Subtract equation 2 from equation 1: 2b = 120
Divide both sides of the equation by 4: b = $60
Substitute for b in equation 1
a + 2(60) = 750
a + 120 = 750
a = 750 - 120
a = 630
The y-intercept is $630.
The equation in slope intercept form is: $630 + $60w
Where w is the number of weeks that Betty works.
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Help me I’m so confused
Answers
The number of apples Chee bought is 2, and the number of peaches she bought is 8
Solving System of Linear Equations GraphicallyFrom the question, we are to determine the number of apples, x, and the number of peaches, y, that Chee bought
From the given information,
She bought $6 worth of apples and peaches
and
Each apple costs $1 and each peach costs $0.50
Then, we can write that
$1 × x + $0.50 × y = $6
x + 0.50y = 6
Also,
She bought 4 times as many peaches as apples
That is,
y = 4x
Now, we will solve the system of equations graphically
x + 0.50y = 6
y = 4x
From the graph, the solution to the system of equations is x = 2, y = 8.
Hence, the number of apples Chee bought is 2, and the number of peaches she bought is 8
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Julio walks 3 1/2 miles in 1 1/4 hours. Find unit rate
Answers
Answer:
3 1/2 ÷ 1 1/4
7/2 ÷ 5/4
7/2 · 4/5
28/10
2.8
Step-by-step explanation:
Write the equation for each line. Use slope-intercept form. m = - 3/8 and the y -intercept is (0,12) .
Answers
The equation of the line in slope-intercept form with a slope of -3/8 and y-intercept of (0 , 12) is y = (-3/8)x + 12.
The equation of a line can be expressed in three different forms: standard form, slope-intercept form, and point-slope form.
The slope-intercept form of the equation of a line is given by the formula:
y = mx + b
where m is the slope of the line
b is the y- intercept
Given that the slope of the line is -3/8 and the y-intercept is (0 , 12), write the equation of the line by simply plugging in its values.
y = mx + b
y = (-3/8)x + 12
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At the Olympic games, many events have several rounds of competition. One of these
events is the men's 100-meter backstroke.
The upper dot plot shows the times (in seconds) of the top 8 finishers in the final round of
the 2012 Olympics. The lower dot plot shows the times of the same 8 swimmers, but in the
semifinal round.
Final round
Semifinal round
distribution.
56
56.5
The center of the semifinal round distribution is
distribution.
57
Time (seconds)
The variability in the semifinal round distribution is
V
57.5
v
58
the center of the final round
the variability in the final round.
Answers
The 100–meter backstroke swimming times of the 8 swimmers during the semifinal and the finals of the Olympic games gives;
First part;
The center of the semifinal round is approximately 57.3625
The variability in the semifinal round is 0.0998
Second part;
The center of the final round is approximately 57.0125
The variability in the final round is 0.3336
How can the center and variability of the data in the dot plot be found?The times of the swimmers in the semifinal round are;
56.7, 57.2, 57.3, 57.3, 57.4, 57.5, 57.7, 57.8
The central value is given by the mean of the data, is found as follows;
(56.7+57.2+57.3+57.3+57.4+57.5+57.7+57.8)/8 = 57.3625
The variability is given by the standard deviation which is found by the formula;
[tex] \sigma = \sqrt{ \frac{ x_{i} - \mu}{n} } [/tex]
Where;
[tex]x _{i} = the \: ith \: value[/tex]
[tex] \mu = the \: mean[/tex]
The standard deviation found using the given values above and an online tool is presented as follows;
[tex] \sigma = \sqrt{ \frac{ x_{i} - 57.3625}{8} \approx 0.316 } [/tex]
The variance ≈ √(0.316) ≈ 0.0998Second part;
In the final, we have the following values from the dot plot;
56, 56.6, 56.6, 57, 57.1, 57.2, 57.7, 57.9
From the above values, using an online calculator, the center, which is taken as the mean is 57.0125
The variance for the final, [tex] \sigma^2 [/tex] ≈ 0.3336
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Danielle sells beauty supplies and earns a base salary of $320.00 per week plus a 8% comission on sales. During one particular week, she sells $2879 worth of beauty supplies. How much does she make for that week? Round to the nearest cent.
Answers
Answer$550.32
Step-by-step explanation: 7day = $320
commission = 8% of 2879
=230.32
total earnings = 320 + 230.32
= 550.32
Write each logarithmic expression as a single logarithm. log₃ y + 4 log₃ t
Answers
The given lograthimic expression log₃ y + 4 log₃ t can be written as log₃(yt^4).
According to the given question.
We have an logarithmic expression
log₃ y + 4 log₃ t
As we know that, a logarithmic expression is an expression that involves the logarithm of an expression containing a variable.
Also according to the product and power rule we know that
log(mn) = logm + logn
Thereofore, the given lograthimic expression log₃ y + 4 log₃ t can be written as
log₃ y + 4 log₃ t
= log₃ y + log₃ t ^4
= log₃(yt^4)
Hence, the given lograthimic expression log₃ y + 4 log₃ t can be written as log₃(yt^4).
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You deposit $400 into a savings account that earns interest annually. the function g(x) = 400(1.05)x can be used to find the amount of money in the savings account, g(x), after x years. what is the range of the function in the context of the problem? â„ [0, 400] [0, [infinity]) [400, [infinity])
Answers
The constant percent rate of change in the case of a deposit of $400 into a savings account is compounded annually.
With an example, what is compound interest?
When you add the interest you have already earned back into your principal balance, you are earning compound interest, which increases your profits. Consider that you have $1,000 in a savings account earning 5% interest annually. If you made $50 in the first year, your new balance would be $1,050.Principal - $400
rate of interest is compounded annually
g(x) = 400( 1.03)ˣ equation 1.
Formula used
A = P( 1 + r )ⁿ
here n = x
Solution:
Putting the value of n, and principal in the formula
A = P( 1 + r )ⁿ ................... equation 2
now comparing both equation 1 and equation 2,
400( 1.05)ˣ = 400( 1 + r )ˣ
( 1.05)ˣ = ( 1 + r )ˣ
1.05 = 1 + r
r = 1.05 - 1
r = 0.05
r % = 0.05 × 100
r % = 5 %
thus, the constant percent rate of change = 5 %
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La edad de maria es igul al quintuple de la edad de daniel
Answers
Answer:
m = 5d
Step-by-step explanation:
m = 5d
Fine the volume and surface area of the figure below
Answers
Answer:
1470 in³, 716 in²
Step-by-step explanation:
The figure is a cylinder, and it's volume can be found using the following formula:
Volume of cylinder
= area of circle base ×height
= πr²h
Identify the value of r and h:
From the diagram, the radius (r) is 6 in. while the height (h) is 13 in.
Using the formula,
volume of cylinder
= π(6²)(13)
= 468π
= 1470 in³ (3 s.f.)
The surface area of a cylinder is the total area of all its faces, i.e. the sum of the area of its two circular bases and its curved surface area.
Formula
Surface area of cylinder
= 2πr² +2πrh
Surface area of cylinder
= 2(π)(6²) +2(π)(6)(13)
= 72π +156π
= 228π
= 716 in² (3 s.f.)
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Under his cell phone plan, Logan pays a flat cost of $58 per month and $3 per gigabyte. He wants to keep his bill under $70 per month. Use the drop-down menu below to write an inequality representing gg, the number of gigabytes he can use while staying within his budget.
PLEASE HELPPPP 3
Answers
The inequality which can be used to determine the number of gigabytes is 58 + 3x < 70 and the solution is x < 4
How to write and solve an equation which can be used to determine the number of gigabytes?The given parameters are
Flat cost = $58
Rate = $3 per gigabyte
Budget = Under $70
The equation is represented as:
Total cost = Flat cost + Rate * Number of gigabyte
So, we have
y = 58 + 3x
The budget is under 70
So, we have
58 + 3x < 70
Subtract 58 from both sides
So, we have
3x < 12
Divide both sides by 3
So, we have
x < 4
Hence. the inequality which can be used to determine the number of gigabytes is 58 + 3x < 70 and the solution is x < 4
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13. Compount Interest An initial deposit of $8500 is compounded continuously at an annual
percentage rate of 3.5%.
xmp+81
Find the number of years required for the investment to double. Round to the nearest whole
number. What is the amount after 10 years?
Use the formula: A = Pert
Answers
Answer:
It will take approximately 20 years for the investment to double. The amount after 10 years will be $17,033.
Step-by-step explanation:
Give me Brainliest if that helped! :)
The residents of a city voted on whether to raise property taxes. The ratio of yes votes 4 to 5 no votes was to . If there were 5364 total votes, how many no votes were there?
Answers
Step by step
You have 5364 votes total
You have 4 to 5 yes to no votes
So you have 5/9 no votes
5/9 = 5364
26820 / 9 = 2980 no votes
If you did the same with yes votes
4/9 = 5364
21456 / 9 = 2384 yes votes
Add 2980 and 2384 = 5364 total votes
Problem solved
find the center and foci of the ellipse:
4x^2+9y^2+8x-36y+4=0
Answers
The center of the given ellipse is given as (-1, 2)
Center of the Ellipse
To find the center of the ellipse, we need to rearrange the equation into the standard equation of ellipse.
[tex]4x^2 + 9y^2 + 8x - 36y + 4 = 0\\\frac{(x+1)^2}{2} + \frac{(y-2)}{4} = 1[/tex]
The center of the ellipse is given as
[tex]center = (-1, 2)[/tex]
FociThe foci of the ellipse are the reference points in an ellipse and it helps to derive the equation of the ellipse. There are two foci for the ellipse i.e F1 and F2
[tex]F_1= (-1 + \sqrt{5}, 2)\\ F_2 = (-1, -\sqrt{5}, 2)[/tex]
The center of the given ellipse is (-1,2) while the foci are stated above.
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order from smallest to greatest
urgent !
Answers
-3y + 2x = -7
8x - 3y = -1
Answers
Answer: If you're solving for the substitution method then your answer would be (1,3)
Step-by-step explanation:
Answer:
x = -4/5
y = 9/5
Step-by-step explanation:
-3y + 2x = -7
8x - 3y = -1
make one of the equations y=....
-3y + 2x = -7
-3y = -7 - 2x
y = (-7 - 2x)/3
now put (-7 - 2x)/3 where y is in the other equation
8x - 3y = -1
8x - 3((-7 - 2x)/3) = -1
8x - 1*(-7 - 2x) = -1
8x + 7 + 2x = -1
solve for x
8x + 7 + 2x = -1
8x+2x = -8
10x = -8
x = -8/10
x = -4/5
now put -8/10 in one of the equations to get what y is
-3y + 2x = -7
-3y + 2(-8/10) = -7
-3y - 16/10 = -7
-3y = -7 + 16/10
-3y = -70/10 + 16/10
-3y = -54/10
y = -54/10 * -1/3
y = 18/10
y = 9/5
Elemer travels 66 miles per hour for 10 hours .find the distance traveled in miles
Answers
Answer: 660 miles
Step-by-step explanation:
66 miles * 10 hours/1 hour =
66*10/1=
66*10=660 miles
Evaluate each.
a.
-4+|51|-4
b. -3•-8
C.
32 ÷ -2
Answers
b) -3•-8 = 24
c) 32/ -2 = -16
A string is vibrating at 220 MHz and the wavelength of the waves on the string is 2.20m. Find the speed of these waves as they travel up and down the string
Answers
The wavelength of the waves on a string that is vibrating at 220 MHz is 2.20 m. These waves move at a 4840 rpm rate as they move up and down the string.
What is a wave length?A waveform signal that is carried in space or down a wire has a wavelength, which is the separation between two identical places (adjacent crests) in the consecutive cycles. This length is typically defined in wireless systems in meters (m), centimeters (cm), or millimeters (mm) (mm). According to the available data, the wavelength is more frequently expressed in nanometers (nm), which are units of 10-9 m, or angstroms (), which are units of 10-10 m, for infrared (IR), visible light (VL), ultraviolet (UV), and gamma radiation ().
V=∧F
V=220×22
V=4840m/s
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Write an equation in point-slope form of the line having the given slope that contains the given point.
m=-3/4, (8,-1)
Answers
The equation in point-slope form of the line having the given slope that contain the given point m=[tex]-\frac{3}{4}[/tex] and (8,-1) is [tex]y+1=-\frac{3}{4}(x-8)[/tex]
Given,
m = [tex]\frac{-3}{4}[/tex]
The point = (8,-1)
The point-slope form of the line
[tex](y-y_{1} )=m(x-x_{1})[/tex]
Substitute the values in the equation
[tex](y-(-1))=-\frac{3}{4}(x-8)\\ y+1=-\frac{3}{4}(x-8)[/tex]
Hence, the equation in point-slope form of the line having the given slope that contain the given point m=[tex]-\frac{3}{4}[/tex] and (8,-1) is [tex]y+1=-\frac{3}{4}(x-8)[/tex]
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Determine the truth value of the following statement for the set of conditions. Explain your reasoning.
If you are over 18 years old, then you vote in all elections.
You are 21 years old and do not vote.
Answers
The given statement is not correct because anyone above 18 years can vote.
It is given that if you are over 18 years old, then you vote in all elections.
We have to determine the truth value , if you are 21 years old and do not vote.
What is the truth value ?
Truth value is the attribute which states that whether the statement is true or false.
As per the question ;
If you are over 18 years old , then you vote in all elections, and if you are 21 years old and do not vote.
The criteria to vote in the elections is to be over 18 years.
Here ;
21 years age is greater than 18 years criteria , that's why it is not possible that you can't vote if you are 21 years old.
The statement is not correct.
Thus , the given statement is not correct because anyone above 18 years can vote.
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