We have the following equilateral triangle:
Since all its sides have to be equal, we have the following equations:
\(\begin{gathered} 4x=3x+5 \\ 4x=7x─15 \\ 7x─15=3x+5 \end{gathered}\)Solving for x each one we get:
\(\begin{gathered} \text{First equation:} \\ 4x=3x+5 \\ \Rightarrow4x─3x=5 \\ x=5 \\ \text{Second equation:} \\ 4x=7x─15 \\ \Rightarrow15=7x─4x=3x \\ \Rightarrow x=\frac{15}{3}=5 \\ x=5 \\ \text{Third equation:} \\ 7x─15=3x+5 \\ \Rightarrow7x─3x=5+15=20 \\ \Rightarrow4x=20 \\ \Rightarrow x=\frac{20}{4}=5 \\ x=5 \end{gathered}\)we can be sure that x=5. Now the sides are:
\(\begin{gathered} x=5 \\ 4x=4(5)=20 \\ 7x─15=7(5)─15=35─15=20 \\ 3x+5=3(5)+5=15+5=20 \end{gathered}\)therefore, the sides of the equilateral triangle measure 20 units
Brittany asked her classmates: How much time, in minutes, do you spend reading each day? Here are the results: 10, 20, 20, 20, 30, 30, 30, 30, 30, 40, 40, 40, 60, 60, 60 Display the data in a line plot, a histogram, and a box plot. Next to each graph, write down something you notice about the data. Upload your completed plots here.
The line plot, histogram, and box plot provide different visual representations of the reading time data. By analyzing these plots, we can observe the distribution and characteristics of the data, such as central tendency, spread, and outliers.
Line Plot:
A line plot displays data points on a number line, representing the frequency or count of each value.
In this case, the line plot will show the minutes spent reading on the x-axis and the count of students on the y-axis.
For the given data, the line plot will show 10, 20, 30, 40, and 60 on the x-axis, with the corresponding counts displayed above each value.
Histogram:
A histogram displays data distribution by dividing the range of values into intervals or bins and representing the frequency of values falling into each bin.
The histogram will have the minutes spent reading on the x-axis and the count or frequency of students on the y-axis.
The intervals will be 10-19, 20-29, 30-39, 40-49, and 50-59, with the last interval being 60+.
The height of each bar in the histogram will represent the number of students falling into each interval.
Box Plot:
A box plot (also known as a box-and-whisker plot) provides a visual representation of the distribution of data, including measures of central tendency and variability.
The box plot will show a horizontal line inside a box, with whiskers extending from the box, and possibly individual data points beyond the whiskers.
The box will represent the interquartile range (IQR), showing the middle 50% of the data.
The line within the box will represent the median value.
The whiskers will indicate the minimum and maximum values, excluding outliers.
By analyzing these plots, you can observe the central tendency, spread, and distribution of the reading time data. For example, you can identify any outliers, notice the most common reading durations, and observe any patterns or trends within the dataset.
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1 Out of 30 students surveyed, 17 have a dog. Based on these results
predict how many of the 300 students in the school have a dog
Answer:
170
Step-by-step explanation:
17 dogs per 30 students or 17/30
Same ratio for 300 students:
300*17/30 = 170So 170 students have a dog
Show that the function f(x)=sin3x + cos5x is periodic and it’s period.
The period of \(f(x)\) is \(\boxed{2\pi}\).
Recall that \(\sin(x)\) and \(\cos(x)\) both have periods of \(2\pi\). This means
\(\sin(x + 2\pi) = \sin(x)\)
\(\cos(x + 2\pi) = \cos(x)\)
Replacing \(x\) with \(3x\), we have
\(\sin(3x + 2\pi) = \sin\left(3 \left(x + \dfrac{2\pi}3\right)\right) = \sin(3x)\)
In other words, if we change \(x\) by some multiple of \(\frac{2\pi}3\), we end up with the same output. So \(\sin(3x)\) has period \(\frac{2\pi}3\).
Similarly, \(\cos(5x)\) has a period of \(\frac{2\pi}5\),
\(\cos(5x + 2\pi) = \cos\left(5 \left(x + \dfrac{2\pi}5\right)\right) = \cos(5x)\)
We want to find the period \(p\) of \(f(x)\), such that
\(f(x + p) = f(x)\)
\( \implies \sin(3x + p) + \cos(5x + p) = \sin(3x) + \cos(5x)\)
On the left side, we have
\(\sin(3x + p) = \sin(3x + 2\pi + p - 2\pi) \\\\ ~~~~~~~~ = \sin(3x+2\pi) \cos(p-2\pi) + \cos(3x+2\pi) \sin(p-2\pi) \\\\ ~~~~~~~~ = \sin(3x) \cos(p-2\pi) + \cos(3x) \sin(p - 2\pi)\)
and
\(\cos(5x + p) = \cos(5x + 2\pi + p - 2\pi) \\\\ ~~~~~~~~ = \cos(5x+2\pi) \cos(p-2\pi) - \sin(5x+2\pi) \sin(p-2\pi) \\\\ ~~~~~~~~ = \cos(5x) \cos(p-2\pi) - \sin(5x) \sin(p-2\pi)\)
So, in terms of its period, we have
\(f(x) = \sin(3x) \cos(p - 2\pi) + \cos(3x) \sin(p - 2\pi) \\\\ ~~~~~~~~ ~~~~+ \cos(5x) \cos(p - 2\pi) - \sin(5x) \sin(p - 2\pi)\)
and we need to find the smallest positive \(p\) such that
\(\begin{cases} \cos(p - 2\pi) = 1 \\ \sin(p - 2\pi) = 0 \end{cases}\)
which points to \(p=2\pi\), since
\(\cos(2\pi-2\pi) = \cos(0) = 1\)
\(\sin(2\pi - 2\pi) = \sin(0) = 0\)
Question 1 of 5 Which number line shows the solutions to x < 5? OA. -3 -6 -4 -2 0 2 4 6 8 OB. O C. -8 -6 -4 -2 0 2 4 6 8 -8-6-4-2 0 2 4 6 8 OD. 864 2 0 2 4 6 8
The number line that shows the solutions of x < 5
B. O What is number line?A number line is a visual representation of the real numbers, ordered from left to right, with zero in the middle. It is typically a straight line that extends infinitely in both directions, with evenly spaced markings that represent specific points along the line.
The solution of x < 5 should consist of number less than 5
The inequality used is less than and hence should have values saying less than
Other options has numbers more than 5 such as 6 except option B
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cos s=-2/5 and sin t=4/5, s and t are in quadrant II
find cos(s+t) and cos(s-t)
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Please do this carefully as i can't afford to get this wrong
The solutions to x = 4 are: (4, 1). The other ordered pairs are not solutions to the equation.
What is Set theory ?
Set theory is a branch of mathematical logic that deals with the study of sets, which are collections of objects. The objects in a set are called elements or members of the set.
The basic idea of set theory is to study the properties of sets and their relationships with other sets. Set theory provides a foundation for most of modern mathematics, as it provides a way to define mathematical objects in terms of sets and to reason about them using set-theoretic operations.
In set theory, the most basic concepts are sets, elements, and subsets. A set is a collection of distinct objects, which can be anything from numbers to colors to people. An element is a member of a set, and a subset is a set whose elements are all contained in another set.
To determine whether each ordered pair is a solution to x = 4, we need to check whether the value of x in each pair is equal to 4.
For the pair (4, 1), the value of x is 4, so it is a solution to x = 4.For the pair (-6, 0), the value of x is not 4, so it is not a solution to x = 4.For the pair (-3, 4), the value of x is not 4, so it is not a solution to x = 4.For the pair (5, -7), the value of x is not 4, so it is not a solution to x = 4.Therefore, the solutions to x = 4 are: (4, 1). The other ordered pairs are not solutions to the equation.
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Find the unit rate.
1. A sloth moves 10 feet in 2 hours. It moves
2. The car travels 165 miles in 3 hours. It travels
feet per hour.
3. There are 48 bottles of water in 4 cases. There are
4. Juice cost $3.60 for 12 ounces. It costs
miles per hour.
per ounce.
bottles per case.
Step-by-step explanation:
1.
10 ft in 2 hours = 10/2 / 1 hour = 5 ft/h
2.
165 miles in 3 hours = 165/3 / 1 hour = 55 m/h or mph
3.
48 bottles in 4 cases = 48/4 / 1 case = 12 bottles per case
4.
$3.60 for 12 oz = 3.6/12 / 1 oz = $0.30 per ounce
Each side length of a triangle is 4 cm. What type of triangle is it?
☐ right
□acute
Equilateral
Isosceles
Answer: Equilateral
Step-by-step explanation:
It's equilateral because it says that each side of the triangle is 4cm. In simple words, all the sides of triangle are equal. Such a triangle is called an equilateral triangle.
Hope you understood.
8. There are three exams in a marking period. A student received grades of 75 and 81 on the first two exams. What grade must the student earn on the last exam to get an average of no less than 80 for the making period?
Answer:
84 and more
Step-by-step explanation:
84+81+75
=240
240/3
=80
After training Naruto went to a ramen shop for dinner. Since Naruto eats ramen for lunch and dinner daily, the shopkeeper gives him a 33.33% discount. If ramen costs 45 cents, how much does Naruto spend in 15 days?
Points given: 20
To calculate how much Naruto spends on ramen in 15 days, we need to determine the total cost of ramen per day and then multiply it by 15.
Since Naruto receives a 33.33% discount, he pays 100% - 33.33% = 66.67% of the original price.
66.67% of 45 cents is (66.67/100) * 45 = 30 cents.
So, Naruto spends 30 cents on ramen per day.
To find out how much he spends in 15 days, we multiply the daily cost by the number of days:
30 cents * 15 = 450 cents.
Therefore, Naruto spends 450 cents, which is equivalent to $4.50, on ramen in 15 days.
some please help asap !!
Answer:
The answer should be 0.66
A fence with 2 gates in it surrounds a lion enclosure.
Each gate is 4 m wide.
an image
What is the length of the fence around the enclosure not including the gates?
The length of the fence around the enclosure not including the gates is:2l + 2w + 8 m
To find the length of the fence around the enclosure, we need to first find the perimeter of the rectangle and then subtract the combined length of the two gates from it.
Let's assume the length of the rectangle is 'l' and the width is 'w'.
From the given data, we know that each gate is 4 m wide.
Therefore, the width of the rectangle is:
Width = w + (4 m + 4 m) = w + 8 m
The perimeter of the rectangle is:
P = 2l + 2(w + 8 m) = 2l + 2w + 16 m
Now, we need to subtract the combined length of the two gates from the perimeter:
P - 2 × 4 m = 2l + 2w + 16 m - 8 m = 2l + 2w + 8 m
So, the length of the fence around the enclosure not including the gates is:2l + 2w + 8 m
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Which number belongs to the solution set of the equation below?
X-18 = 17
Answer:
a. 35
Step-by-step explanation:
x - 18 = 17
x = 35
A library contains 60000 books. 14,000 are on the subject of business and 22000 are on health care and 12000 on psychology and Law. What percentage of the librarys is on the if the computing books are two-thirds of the reminder
Answer: The percentage of computing books is 13.33%.
Step-by-step explanation:
The library consist of books on different subjects:
S = {Business, Healthcare, Computing, Psychology, Law,...}
There are a total of N = 60,000 books in the library.
Business (B) = 14,000
Healthcare (H) = 22,000
Psychology and Law (P&L) = 12,000
Remaining = N - B - H - P&L
= 60000 - 14000 - 22000 - 12000
= 12000
It is provided that computing books make up two thirds of the remainder
Compute the number of computing books as follows:
C = 12000 × (2/3) = 8000
Compute the percentage of computing books as follows:
\(C\)%=\(\frac{8000}{60000}*100=13.33\)\(%\)%
Thus, the percentage of computing books is 13.33%.
b How much is 10% of 10 liters of milk?
C.How long is 10% of a 24-hour day?
d.How can you find 10% of any number?
Answer:
b. 1 liters of milk
c. 2.4 hours
d. (any number) /10% times 100
Step-by-step explanation:
because of the gravity of the earth
bobo Ampt
Max pays a flat rate of $85 for his cell phone. He is also charged $0.15 for every text that he sends. His cell phone bill can be no more than the amount he has budgeted for it each month. If x represents the number of texts and y represents his budgeted amount, which inequality represents Max's cell phone budget each month? (3 points)
a $0.15x + $85 ≥ y
b $0.15x + $85 ≤ y
c $0.15x - $85 ≥ y
d $0.15x - $85 ≤ y
Simplify the expression StartFraction a b Superscript 3 Baseline over a Superscript 4 Baseline b EndFraction plus left-parenthesis c Superscript 2 Baseline right-parenthesis Superscript 3 Baseline
The simplification of the expression ab³/a⁴b + (c²)³ is determined as b²/a³ + c⁶.
What is the simplification of the expression?The given expression is simplified as follows;
The given expression is written as;
ab³/a⁴b + (c²)³
To simplify the expression given above, we will divide the fraction with the common factor as follows;
From the numerator; ab³, we will factor out "ab"
From denominator; a⁴b, we will factor out "ab"
The resulting expression becomes;
ab³/a⁴b + (c²)³
= b²/a³ + c⁶
Note: for the power of c, we simplify by multiplying 2 and 3 = 6
Thus, the simplification of the expression ab³/a⁴b + (c²)³ is determined as b²/a³ + c⁶.
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given the function f(x)=logbase2(X), find the y-intercept of g(x) = f(x+4)+8
The y-intercept of f(x + 4) + 8 is given as follows:
10.
What is a translation?A translation happens when either a figure or a function is moved horizontally or vertically on the coordinate plane.
The four translation rules for functions are defined as follows:
Translation left a units: f(x + a).Translation right a units: f(x - a).Translation up a units: f(x) + a.Translation down a units: f(x) - a.The parent function for this problem is given as follows:
\(f(x) = \log_2{x}\)
The translated function is then given as follows:
\(g(x) = \log_2{x + 4} + 8\)
The y-intercept of the function is the numeric value at x = 0, hence:
\(g(0) = \log_2{0 + 4} + 8\)
g(0) = 2 + 8 = 10.
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please help me asap
Answer:
11. 6
12. The last option, A=1/4, B=7/16, C=5/8, D=3/4
Step-by-step explanation:
11. look at the denominators, and what do you see? I see that 11 is 88 divided by 8. So, let's divide the numerator by 8 as well! 48/8=6
12. 1/4 is half of 1/2, so it would be between 0 and 1/2, or A
Same thing with 3/4 but this time in the middle of 1/2 and 1, or D
5/8 is a little over 4/8, or 1/2, so C
The last one left is 7/16, B
I NEEED TO GET THIS RIGHT PLS ANSWERRRRR. ILL GIVE YOY ALOT OF POINTS AND A BRAINLYIST!!!
Answer:0.5n
Step-by-step explanation: its to long to explain but correct :)
Answer:
0.5n
Step-by-step explanation:
Solve for X: 57 Degrees 79 Degrees 4x+4
Answer:
x equals to 10
Step-by-step explanation:
every triangle is 180 degrees, so 180-(79+57)= 44.
4x+4 (reverse it), 44-4= 40, 40÷4= 10. so x=10.
I hope you understand!!!
Graph y + 14 = -7x help me pls
Answer:
see attached graph
Step-by-step explanation:
There are a couple of ways you can look at this.
Point-Slope Form
The point-slope form of the equation for a line is ...
y -k = m(x -h) . . . . . . . line with slope m through point (h, k)
Comparing this to the given equation, we see that ...
k = -14, m = -7, h = 0
That is, the equation describes a line with slope -7 through point (0, -14).
The slope is the ratio of rise to run. Usually, "run" is considered to be positive in the +x direction (to the right). Here, you run out of room on most graphs if you look for a point that is 7 units down and 1 unit right of the y-intercept at (0, -14). (That point is (1, -21).) So, it is more convenient to start at the y-intercept (0, -14) and go 1 unit left and 7 units up to find another point on the line. That point is (-1, -7). With two points plotted, you can draw the graph.
__
Slope-Intercept form
We discovered above that the y-intercept is -14. You can get there also by putting the equation in slope-intercept form:
y = mx +b . . . . . . line with slope m and y-intercept (0, b)
Adding -14 to both sides of the given equation gives you this form.
y = -7x -14
The method of plotting is substantially identical to that described above.
__
Standard form
The standard form of the equation is ...
ax +by = c
where a > 0, and a, b, c are mutually prime integers.
Adding 7x-14 to both sides of the equation puts it into standard form:
7x +y = -14
The x- and y-intercepts are found by setting the other variable to zero and solving for the one that is left. Here, that means the x-intercept is ...
c/a = -14/7 = -2
and the y-intercept is ...
c/b = -14/1 = -14
These x- and y-intercepts are easily plotted on the x- and y-axes. The graph will be the line drawn through them. The attached graph shows the line and the intercepts.
50 Points! Multiple choice algebra question. Photo attached. Thank you!
The solution of the inequality, log₂ 2m > log₂ (m + 5) is {m | m > 5 / 2}.
How to solve logarithm inequality?An inequality is an expression that have <, >, ≤ and ≥ . Therefore, let's solve the logarithmic inequality for the variable m.
Hence,
log₂ 2m > log₂ (m + 5)
Therefore, let's divide both sides by log₂.
Hence,
2m > m + 5
subtract m from both sides of the inequality
2m > m + 5
2m - m > m - m + 5
2m > 5
divide both sides by 2
2m / 2 > 5 / 2
Therefore,
m > 5 / 2
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If a wheelchair access ramp has to have an angle of elevation no more than 4.8 degrees and it has to rise 18 inches above the ground, how long must the ramp be?
The wheelchair access ramp must be 216.09 inches long.
To find the length of the wheelchair access ramp, we can use trigonometry.
The tangent function relates the angle of elevation to the ratio of the opposite side (height) to the adjacent side (length of the ramp).
Let's denote the length of the ramp as "x".
The height of the ramp is given as 18 inches.
Using the tangent function:
tan(angle of elevation) = height/length of the ramp
tan(4.8 degrees) = 18/x
To solve for x, we can rearrange the equation:
x = 18 / tan(4.8 degrees)
Using a calculator to evaluate the tangent of 4.8 degrees:
x = 18 / 0.08331
x= 216.09
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14A construction crew has just builtnew road. It took them 6 weeks to build 7.68 kilometers of road. At what rate did they build the road?I kilometers per week?
Given,
The construction crew took 6 weeks to build 7.68 kilometers of road.
Rate of built the roads,
\(\frac{7.68}{6}=1.28\)Therefore, the rate of building the roads is 1.28 per week.
Find the value of x.
78°
OA7
OB. 8
O C. 5
O D. 1
(12x+18)
Step-by-step explanation:
you can find the answer by vertical opposite angle
if the value of x is computed and it's equal to 78 you will find the answer
78=(12x+18)^
78=(12×5+18)
78=(60+18)
78=78 the problem is solved
may u get branliest please please
Hi I need help with this question please and thank you
Given the inequality:
-9 < 4x + 3 < 27
we are to solve for x
recall,
if a
−12 + −9 = ? I need an answer!
Answer: -21
Step-by-step explanation:
The Empire State Building is 1,250 feet tall. Maria wants to make a model that has a scale of 1/4 foot = 50 feet. How to tall will her model be?
Answer:
25 ft tall
Step-by-step explanation:
divide 1250 by 50
i think its right lol.
Enya is writing a 500 word essay. So far, she has written 150 words. What percent of her essay has she written so far?
Answer:
30%
Step-by-step explanation:
150/500 = 0.3
0.3x 100= 30%
Answer:
333.3%
Step-by-step explanation: