Answer:
Al- khwarizmiStep-by-step explanation:
that is my
Answer:
Muhammad ibn Musa al-Khwarizmi
محمد بن موسی خوارزمی
Which expression is equivalent to (tangent (startfraction theta over 2 endfraction) ) (negative sine theta)?
The given expression is equivalent to -1 + cos θ. Option B
What is trigonometry?
Trigonometry can be seen as the branch of mathematics that deals with the relations of the sides and angles of triangles and with the functions of any angles.
The problem deduced from the information is;
[tex]-tan\frac{\alpha }{2} ( -5 sin\alpha)[/tex]
It is simplified thus
[tex]\frac{\frac{sin\alpha }{2} }{\frac{cos \alpha }{2} }[/tex] × [tex](- 2 sin\frac{\alpha }{2} * cos \frac{\alpha }{2} )[/tex]
We then have
[tex]-1 + cos \alpha[/tex]
Therefore, the given expression is equivalent to -1 + cos θ. Option B
The complete question is;
Which expression is equivalent to (tangent (StartFraction theta Over 2 EndFraction) ) (negative sine theta)?
– 1 – cos(ϴ)
– 1 + cos(ϴ)
1 + cos(ϴ)
1 – cos(ϴ)
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solve:
7(2)^x=224
( help pls )
Answer:
5
Step-by-step explanation:
Original equation:
[tex]7(2)^x=224[/tex]
Divide both sides by 7
[tex]2^x=32[/tex]
Rewrite in log
[tex]log_232=x[/tex]
You can do mental math to realize this equals 5, or plug this into your calculate (if it allows you to set the base), but if you can't do either, you can use the change of base formula:
[tex]log_ba=\frac{log (a)}{log(b)}[/tex]
You get:
[tex]log_232=\frac{log(32)}{log(2)}[/tex]
When you calculate using a calculator you should get 5
Answer: x = 5
Step-by-step explanation:
[tex]7(2)^x=224[/tex]
start by dividing 7 from both sides
[tex]\frac{7(2)^x}{7} =\frac{224}{7}[/tex]
[tex]2^x=32[/tex]
take the log of both sides
[tex]log(2^x) = log(32)[/tex]
move the x to the left of the log
[tex]xlog(2) = log(32)[/tex]
divide both sides by log(2)
[tex]x=\frac{log(32)}{log(2)}[/tex]
use change-of-base formula
[tex]\frac{log(a)}{log(b)} =logx_{b} (a)[/tex]
[tex]x = log_{2} (32)[/tex]
since [tex]2^5 = 32[/tex], x = 5
Hope this helped :)Suppose that Aces can be either high or low; that is, that {A, 2, 3, 4, 5} is a straight, and so is {10, Jack, Queen, King, Ace}. Moreover, a hand that is an Ace-high beats a King-high, etc. The number of ways of getting a five card hand that is two pair from a standard deck of cards is (Q8) The probability of being dealt a five card hand that is two pair from a well shuffled standard deck of cards is
The probability of being dealt a five card hand that is two pair from a well shuffled standard deck of cards is 40.
According to the statement
I have 10 starting cards, from Ace to 10, and 4 suits,
and by this way we get the 40 subsets and because of these subsets there is a probability becomes 40.
So, The probability of being dealt a five card hand that is two pair from a well shuffled standard deck of cards is 40.
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If EF = 2x – 12, FG = 3x – 15, and EG = 23, find the values of x, EF, and FG.
The values of x, EF, and FG from the line segment are 10, 8 and 15 respectively.
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
EG = EF + FG (segment addition postulate)
Hence:
23 = (2x - 12) + (3x - 15)
x = 10
EF = 2(10) - 12 = 8
FG = 3(10) - 15 = 15
The values of x, EF, and FG from the line segment are 10, 8 and 15 respectively.
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admission to a carnival is $4 for children and $6 for adults. what is the ratio of the number of children to the number of adults in this group
The ratio of the number of children to the number of adults in this group is 2 : 3
How to determine the ratio?The admission is given as:
Children=4
Adult = 6
Express as ratio
Ratio = Children : Adult
This gives
Children : Adult = 4 : 6
Simplify
Children : Adult = 2 : 3
Hence, the ratio of the number of children to the number of adults in this group is 2 : 3
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Which point corresponds to the real zero of the graph of y = log3 (x+2) - 1?
O (-1,-1)
O (1,0)
O (-1,0)
O (0,-.369)
E
Answer:
(1, 0 )
Step-by-step explanation:
using the rule of logarithms
[tex]log_{b}[/tex] x = n ⇒ x = [tex]b^{n}[/tex] , then
y = [tex]log_{3}[/tex] (x + 2) - 1
to find the zero let y = 0 , that is
[tex]log_{3}[/tex] (x + 2) - 1 = 0 ( add 1 to both sides )
[tex]log_{3}[/tex] (x + 2) = 1 , then
x + 2 = [tex]3^{1}[/tex] = 3 ( subtract 2 from both sides )
x = 1
the zero is (1, 0 )
Find the slope of the line containing the points (5, -1) and (-8, -4).
A.
B.
13
D.
5/3
OC. 13
Which topic is this and how to solve ?
Answer:
Step-by-step explanation:
to be honest, I have no idea what topic this is anymore but to solve it plug in 5 for f(x) and then use -3 for x and then simplify for B.
1/2 of the women in the Spring Garden Club are over 60 years old. 1/4 of the remainder are under 40. What part of the membership is between 40 and 60 years old?
(Please explain with steps!! thank you)
A) 1/4
B) 3/8
C) 3/4
D) 5/8
A)1/4
Step-by-step explanation:
1/2=2/4
2/4+1/4=3/4
4/4-3/4=1/4
Point O is the centroid of triangle ABC, BY = 3.3, CY= 3, Find BO.
Applying the centroid theorem, the length of BO is: A. 2.2.
What is the Centroid Theorem?Based on the centroid theorem, the length of BO equals two third of the length of BY.
That is:
BO = 2/3(BY)
Plug in the values
BO = 2/3(3.3)
BO = 2.2.
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PLEASE HELP!!! what function is graphed below?
The function in the given graph obtained from the y and x-intercept is the option;
[tex]y = cot \left( \frac{3}{4} \cdot \left(x - \frac{\pi}{6} \right)\right)[/tex]
Which method can be used to find the correct function?From the given graph, we have;
At x = 0, y < -2Similarly;
At x = (5/6)•π, y ≈ 0The above relationship corresponds with the following function;
[tex]y = cot \left( \frac{3}{4} \cdot \left(x - \frac{\pi}{6} \right)\right)[/tex]
The function graphed is therefore;
[tex]y = cot \left( \frac{3}{4} \cdot \left(x - \frac{\pi}{6} \right)\right)[/tex]
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I find this question kinda hard
Answer:
Step-by-step explanation:
dans dog walking job pays $15 per hour. his job as a car-wash attendant pays $400 each week. dan wants to know how many hours he needs to spend walking dogs to earn more than $520 in a week. which three inequalities can model this situation? select all the correct answers. x(15+400)>520 520<400+15x 15x>120 15x+520>400 520<15x+400x 15x+400>520
Answer: 400 520<15x+400x 15x+400>520
Step-by-step explanation:
Find the best fit line for the scatter plot.
1. There are two cyclists (Cyclist A: 225 lb. and Cyclist B: 145 lb.) riding the same course on the same style bike and
all other variables are the same. Using the four external forces of resistance, explain which cyclist will come to a
stop first if they stopped pedaling. Be sure to include each of the four factor's contribution and how each impacted
your answer. (5 points)
The cyclist that will come to stop first when the brake is applied, is the cyclist with lesser mass which is Cyclist B because of its lesser inertia.
What is law of inertia?
The law of inertia states that an object at rest or uniform motion in a straight line will continue in that path unless acted upon by an external force.
Inertia depends on mass of the object, the more massive an object is, the more reluctant it will be to stop and vice versa.
Thus, the cyclist that will come to stop first when the brake is applied, is the cyclist with lesser mass which is Cyclist B because of its lesser inertia.
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The figure below is painted on the street. It consists of a rectangle and an isosceles triangle.
Answer:
62 cmStep-by-step explanation:
add all sides, the top is the same as the bottom, (the side of 6 must be counted only once).
[2 * ( 18 + 3 + 7)] + 6 =
(2 * 28) + 6 =
56 + 6 =
62
62 m is the parameter of the given figure.
What is Perimeter?The perimeter of a two-dimensional form is the space surrounding it. It represents the total length of the shape's sides. The units used to measure the sides of the form, such as meters, centimeters, inches, or feet, determine the units used to measure the perimeter.
In a statistical context, parameters often refer to the unknown values of a probability distribution. In this case, parameters can be estimated using statistical methods such as maximum likelihood estimation or Bayesian inference.
Add all sides, the top is the same as the bottom, (the side of 6 must be counted only once).
[2 * ( 18 + 3 + 7)] + 6 =
(2 * 28) + 6 =
56 + 6 =
62
The perimeter of the given arrow is 62 m.
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Which is the graph of f(x) = √x?
The graph is shown in the attached image.
OF
Fo
T
The first equation from the previous system of
equations is graphed. Graph the second equation to
find the solution of the system of equations
VH-2x+4
13-1
What is the solution to the system?
Answer:
(3,-2)
Step-by-step explanation:
See attached image.
He is offered a discount for the first five months. after this period, his rate increases by $8.50 per month. his total cost at the end of the year is $245.50. paul wrote the following equation represent his plan. 5x + 7(x + 8.50) = 245.50 part a: how much, in total, will paul pay during the five discounted months of his plan? (1 point
The first five months Paul paid and in the next seven months he paid 24.
What is a Discount ?Discounts are defined as lowered prices or the sale of an item for less than it would typically cost. The fundamental formula for calculating a discount is to multiply the original price by the given percentage rate in decimal form. We must deduct the discount from the original price to determine the item's sale price. A discount is an amount that is subtracted from the regular price of an item.
Paul represent his plan in the form of equation:
[tex]5 x+7(x+8.50)=245.50[/tex]
Where x is an amount for the first [tex]5[/tex] months that is paid by Paul after the discount and [tex](x+8.50)[/tex] is an amount for the next [tex]7[/tex] month after discount.
[tex]&\Rightarrow \quad 5 x+7 x+59.50=245.50 \\&\Rightarrow \quad 12 x=186 \\&\Rightarrow \quad x=\frac{186}{12} \\&\Rightarrow \quad x=15.50\end{aligned}[/tex]
For the next 7 month:
[tex](x+8.50)=(15.50+8.50)=\$ 24[/tex]
Therefore, The first [tex]5[/tex] months Paul paid $ 15.50, and in the next [tex]7[/tex] months he paid $ 24.
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i don't know this problem someone help please
Answer:
Points shouldn't be connected by straight lines but rather a curve
Step-by-step explanation:
None of the points seem to be incorrect, and the x and y-axis are labeled correctly as well as the points, the only issue I would say there is, is that this is a quadratic equation, so Brogan shouldn't be drawing straight lines between points, but rather a curve.
simplify:
5 whole, 3 out of 10 + 2 whole, 1 out of 5.
Fractions are written as the ratio of two integers. The sum of 5 3/10 and 2 1/5 is 7 1/2
Sum of fractionsFractions are written as the ratio of two integers. Given the following expression
5 3/10 + 2 1/5
convert the mixed into improper fraction
53/10 + 11/5
Find the LCM
53+22/10
75/10
7.5
Hence the sum of 5 3/10 and 2 1/5 is 7 1/2
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Pls help solve part c
Answer:
See image below
Step-by-step explanation:
Every point starting at the y axis and extending left to ∞ represents the inequality x ≤ 0
g Using the latest observation in a sequence of data to forecast the next period is an associative forecast. a regression analysis. a naive forecast. a moving average forecast. an exponentially smoothed forecast.
Using the latest observation in a sequence of data to forecast the next period is a naïve forecast. Option C
What is a naïve forecast?
A naïve forecast is a forecasting technique in which the last sequence of data are used for the next period's forecast without predictions or adjusting the factors that could affect it.
Forecasts that are produced using a naïve approach are equivalent to the final observed value gotten.
Thus, using the latest observation in a sequence of data to forecast the next period is a naïve forecast
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A circular sheet of paper of radius 6 inches is cut into 3 equal sectors, and each sector is formed into a cone with no overlap. What is the height in inches of the cone
The height of the cone is 4√2 inches.
The circumference of the base of each cone will be the arc length of one of the sectors
= 2 [tex]\pi[/tex] (6) / 3
= 4 [tex]\pi[/tex] inches
So, the radius, r, of each cone (in inches) is given by :
4pi = 2 [tex]\pi[/tex] * r
4 = 2r
2 = r
Using the Pythagorean Theorem, the cone height, h, is given by :
h = √[ slant height^2 - radius^2 ]
= √ [ 6^2 - 2^2 ]
= √32
= 4√2 inches
In arithmetic, the Pythagorean theorem, or Pythagoras' theorem, is a essential relation in Euclidean geometry a few of the three facets of a right triangle. It states that the vicinity of the square whose facet is the hypotenuse is identical to the sum of the regions of the squares on the other two facets.
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Consider the quadratic function f(x) = x² - 8x -4. What is the value of the leading coefficient?
-8
01
Answer:
1
Step-by-step explanation:
f(x) = x² - 8x - 4 ← is in standard form
with leading term x² and so
leading coefficient is the coefficient of the x² term, that is 1
Consider the relation given by the graph shown below.
a) Is the relation a function? Why or why not?
b) Determine the domain and range of this graph.
Each treasure hunt team will have 5 people. So far 42 people have signed up. How many more people are needed to make every team equal? How many teams will there be?
Answer:
1) 3 more people
2) 9 teams
Step-by-step explanation:
The divisibility rule for 5 is that it must end in 5 and 0
so the next one is 45, so 3 more people
----------------------- ----------------------- ----------------------- -----------------------
45/5=9 teams
Solve the system of equations 2x-y=132x−y=13 and 6x+5y=-336x+5y=−33 by combining the equations.
Answer: (2;-9).
Step-by-step explanation:
[tex]\left \{ {{2x-y=13\ |*(-3)} \atop {6x+5y=-33}} \right. \ \ \ \ \left \{ {{-6x+3y=-39} \atop {6x+5y=-33}} \right. .\\Summing\ up\ these\ equations:\\8y=-72\ |:8\\y=-9.\\2x-(-9)=13\\2x+9=13\\2x=4\ |:2\\x=2.[/tex]
What is the ratio of the two values and what new value do they produce?
$280 in 7m
(Write Explaination)
The required ratio is give by $40/m, 4 miles/min, 30 mile/liter. .
Let, just assume a vehicle is given an economy of $280 of 7m.
The ratio can be defined as the comparison of the fraction of one quantity towards others. E.g.- water in milk.
Now,
The ratio can be given as for economy = 280/7
= $40/m
here for new values,
suppose the vehicle travel for 40miles in 10 mins
ratio = 40/10= 4 miles/min
and vehicle consumes 2 liter fuel on 60 miles of distance ratio can be given as
ratio = 60/2 = 30 mile/liter.
Thus the required ratios can be given as $40/m, 4 miles/min, 30 mile/liter.
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which of the following of these numbers represents the three sides of a right triangle?
Answer:
3,4 and 5 is the ratio between the sides of a right triangle, therefore also the multiples (6-8-10 .... 9-12-15 etc.)
Step-by-step explanation:
3,4 and 5 is the ratio between the sides of a right triangle, therefore also the multiples (6-8-10 .... 9-12-15 etc.)