Answer:
D(t)=60+23*sin(2*pi*t/24)+26*cos(2*pi*t/24)
Step-by-step explanation:
The temperature at any time t can be represented as:
D(t)=A+B*sin(2*pi*t/T)+C*cos(2*pi*t/T)
where A is the average temperature, B is the amplitude of the sine wave, C is the amplitude of the cosine wave, and T is the period.
In this case, we are given that the average temperature is 60, the high temperature is 73, and the low temperature is 47. We can therefore calculate that the amplitude of the sine wave is 23 and the amplitude of the cosine wave is 26. The period is 24 hours. Therefore, the equation for the temperature in terms of time is:
D(t)=60+23*sin(2*pi*t/24)+26*cos(2*pi*t/24)
You are selling books for $4 each to raise money for a trip. You have to pay $10 for the table. Write a rule for the amount of books sold{b} and total amount of money earned(t).
Answer:
$14 dollars
Step-by-step explanation:
figure below represents a floor covered with white tiles and gray tiles. KEY = 1 square unit Which expression could be used to find the area, in square units, of the entire floor? A (12+7) x (12+7) B (12 × 7) + (12 × 7) X (10+7) x (2+7) (10 × 7) + (2 × 7)
the area of the given fig will be (12 × 7) +(12 × 7)
What is square?
Having four equal sides, a square is a quadrilateral. There are numerous square-shaped objects in our immediate environment. Each square form may be recognized by its equal sides and 90° inner angles. A square is a closed form with four equal sides and interior angles that are both 90 degrees. Numerous different qualities can be found in a square.
a floor covered with white tiles and gray tiles.
the area of the given figure will be
(12 × 7) and another (12 × 7)
So the total area will be (12 × 7) +(12 × 7)
Hence the area of the given fig will be (12 × 7) +(12 × 7)
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Length of the sides of a rectangular garden are in the ratio 1:2. Line reconnecting the centre of the adjacent sides of the garden is 20m long. Calculate the perimeter and the area of the garden
Answer:
Step-by-step explanation:
Let's assume the length of the shorter side of the rectangular garden is x, then the length of the longer side will be 2x.
The distance between the centres of the adjacent sides of the garden is the hypotenuse of a right-angled triangle whose other two sides are x and 2x/2 = x.
Therefore, by the Pythagorean theorem:
(√(x^2 + x^2))^2 = (20)^2
2x^2 = 400
x^2 = 200
x = √(200) ≈ 14.14
So the length of the shorter side is approximately 14.14 meters, and the length of the longer side is approximately 28.28 meters.
The perimeter of the garden is:
2(shorter side + longer side) = 2(14.14 + 28.28) = 84.84 meters
The area of the garden is:
shorter side × longer side = 14.14 × 28.28 = 400 square meters
Plz help I’m really confused
Answer: i think its 134
Step-by-step explanation:
Write these fractions as whole nombers
8/4
21/3
56/8
48/8
Answer:2, 7, 7, 6
Step-by-step explanation:
Answer:
1) 8/4 = 2
2) 21/3 = 7
3) 56/8 = 7
4) 48/8 = 6
Step-by-step explanation:
To convert a fraction into a whole number: Divide the numerator by the denominator.
What's a numerator?:
A numerator is the part of a fraction above the line. So, 8 in 8/4 is the numerator.
What's a denominator?:
A denominator is the bottom number in a fraction. So, 4 in 8/4 is the denominator.
1) 8/4 = 8 divided by 4 = 2.
2) 21/3 = 21 divided by 3 = 7
3)56/ 8 = 56 divided by 8 = 7
4) 48 / 8 = 48 divided by 8 = 6
Why do we study?give me reason
Answer:
Simple to help us improve our lives
Answer:
To do good in school
Step-by-step explanation:
the thing is teachers want us to study so we remember whatever is on the test for an example and that is good but not alt of people always study.
A bakery is 10 yards wide and 14 yards long. The baker wants to put a wooden shelf around the inside of the bakery. The wooden shelving costs $7.00 per yard. How much will the baker's shelf cost?
The baker's shelf will cost $336.00.
What is the perimeter?
The perimeter is a mathematical term that refers to the total distance around the outside of a two-dimensional shape. It is the length of the boundary or the sum of the lengths of all the sides of a closed figure.
To calculate the cost of the wooden shelf, we first need to find the perimeter of the bakery:
Perimeter = 2 × (length + width)
Perimeter = 2 × (14 yards + 10 yards)
Perimeter = 48 yards
So the baker needs 48 yards of wooden shelf.
The cost of the wooden shelf is $7.00 per yard, so we can find the total cost by multiplying the number of yards by the cost per yard:
Total cost = 48 yards × $7.00 per yard
Total cost = $336.00
Therefore, the baker's shelf will cost $336.00.
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Sketch a right triangle corresponding to the trigonometric function of the acute angle 8. Then find the exact values of the other five trigonometric functions of
Solution:
Given:
\(cot(\theta)=2\)Using the trig ratio of cot;
\(\begin{gathered} cot\theta=\frac{1}{tan\theta} \\ tan\theta=\frac{opposite}{adjacent} \\ Hence, \\ cot\theta=\frac{adjacent}{opposite} \\ cot\theta=\frac{2}{1} \\ adjacent=2 \\ opposite=1 \end{gathered}\)The hypotenuse is gotten using the Pythagoras theorem;
\(\begin{gathered} h^2=2^2+1^2 \\ h^2=4+1 \\ h^2=5 \\ h=\sqrt{5} \end{gathered}\)Thus, the sketch of the right triangle is;
\(\begin{gathered} Thus, \\ opposite=1 \\ adjacent=2 \\ hypotenuse=\sqrt{5} \end{gathered}\)Hence,
\(\begin{gathered} sin\theta=\frac{opposite}{hypotenuse} \\ sin\theta=\frac{1}{\sqrt{5}} \\ sin\theta=\frac{1}{\sqrt{5}}\times\frac{\sqrt{5}}{\sqrt{5}}=\frac{\sqrt{5}}{5} \\ sin\theta=\frac{\sqrt{5}}{5} \end{gathered}\)\(\begin{gathered} cos\theta=\frac{adjacent}{hypotenuse} \\ cos\theta=\frac{2}{\sqrt{5}} \\ cos\theta=\frac{2\sqrt{5}}{5} \end{gathered}\)\(\begin{gathered} tan\theta=\frac{opposite}{adjacent} \\ tan\theta=\frac{1}{2} \end{gathered}\)\(\begin{gathered} csc\theta=\frac{1}{sin\theta} \\ csc\theta=\frac{1}{\frac{\sqrt{5}}{5}} \\ csc\theta=\sqrt{5} \end{gathered}\)\(\begin{gathered} sec\theta=\frac{1}{cos\theta} \\ sec\theta=\frac{1}{\frac{2\sqrt{5}}{5}} \\ sec\theta=\frac{\sqrt{5}}{2} \end{gathered}\)The accompanying graph shows the amount of water left in Rover's water
dish over a period of time. How long did Rover wait from the end of his
first drink to the start of his second drink?
Answer:
Step-by-step explanation:
The answer is 30
Specifications for a part for a DVD player state that the part should weigh between 24 and 25 ounces. The process that produces the parts has a mean of 24.5 ounces and a standard deviation of .2 ounce. The distribution of output is normal. a. What percentage of parts will not meet the weight specs
Answer:
The answer is "2.5".
Step-by-step explanation:
\(\to \frac{(25-24.5)}{0.2}= \frac{(0.5)}{0.2}=2.5\)
The pieces which does not achieve that specific weight either are below and above the average standard deviation of 2.5. The percentage of components not fulfilling their weight data is 1.1% using a Table of Z-scores.
A service station charges $251 for four new tires and installation. If the installation portion of the bill is $84, what is the price of one tire
Apply the distributive property to factor out the greatest common factor.
24+32p= _____
Answer:
8(3+4p)
Step-by-step explanation:
8 goes into 24 and 32, so it can be factored out:
\(24+32p=8(3+4p)\)
Answer:
8(3 + 4p)
Step-by-step explanation:
Factor 24 + 32p
First, factor out the GCF. In this case, the GCF is 8, and we have
8(3 + 4p)
We can't factor anymore so the answer is 8(3 + 4p)
Find the area and the circumference of a circle with a radius of 2km. Write your answers in terms of pi, and be sure to include the correct units in your answers.
The area and the circumference of the circle would be 4π square kilometers and 4π kilometers respectively.
Area and circumference of a circleThe area of a circle with a radius r is given by:
A = πr^2The circumference of a circle with a radius r is given by:
C = 2πr.Given that the radius of the circle is 2km, we can substitute r = 2 into these formulas to find the area and circumference:
Area = πr^2 = π(2km)^2 = 4π km^2Circumference = 2πr = 2π(2km) = 4π kmIn other words, the area and the circumference of the circle are 4π square kilometers and 4π kilometers respectively.
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2r-12-3(r + 7) can I get help pls
-r - 33
I did on paper
PLEASE HELP ME!!! Its easy!
Answer:
(-1(3/6))+(-3/5)=(-1(3/6))-(3/5)=(-1.5)-(0.60)=-2.1
-2.1
Find all zeros? One zero has been given.
The zeros of the function f(x) = 2x⁴ + 11x³ + 16x² + x - 6 are x = -3, x = -2,
x = -1 and x = 1/2 respectively
What is the zeros of a function?The zero of a real-, complex-, or generally vector-valued function f, is a member x of the domain of f such that f(x) vanishes at x; that is, the function f attains the value of 0 at x, or equivalently, x is the solution to the equation f(x) = 0. Graphically, the real zero of a function is where the graph of the function crosses the x‐axis; that is, the real zero of a function is the x‐intercept(s) of the graph of the function.
In the given problem, the zero of the function;
f(x) = 2x⁴ + 11x³ + 16x² + x - 6; -3 are
f(-3) = 2(-3)⁴ + 11(-3)³ + 16(-3)² -3 - 6 = 0
f(-2) = 2(-2)⁴ + 11(-2)³ + 16(-2)² - 2 - 6 = 0
f(-1) = 2(-1)⁴ + 11(-1)³ + 16(-1)² - 1 - 6 = 0
f(1/2) = 2(1/2)⁴ + 11(1/2)³ + 16(1/2)² - 1/2 - 6 = 0
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Carl is making accessories for the soccer team. He uses 773.85 inches of fabric on headbands for 29 players and 4 coaches. He also uses 279.56 inches of fabric on wristbands for just the players. How much fabric was used on a headband and wristband for each player?
23.45 inches fabric was used on a headband and 9.64 inches fabric was used on a wristband for each player.
No. of players = 29
No. of coaches = 4
Total fabric used for headbands = 773.85 inches
Total no. of people for headbands = 29 + 4
= 33
Fabric used for headband for 1 person = 773.85/33
= 23.45 inches
Total fabric used for wristbands = 279.56 inches
Total no. of people for wristbands = 29
Fabric used for headband for 1 person = 279.56/29
= 9.64 inches
Hence, fabric for headband is 23.45 inches and for wristband is 9.64 inches.
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I will mark you brainiest!
A) 126.6
B) 99.6
C) 66.9
D) 57.1
The required length of AC in triangle ABC is b = 119.57 units.
How to find the value of AC?In triangle ABC, we have:
\($\angle B = 85^\circ$\)
\($\angle C = 53^\circ$\)
\($BC = 85 units\)
AB = c
AC = b (we need to find the value of b)
We know that the sum of the interior angles of a triangle is \($180^\circ$\). Therefore:
\($\angle A = 180^\circ - \angle B - \angle C$\)
\($\angle A = 180^\circ - 85^\circ - 53^\circ$\)
\($\angle A = 42^\circ$\)
Using the law of sines, we have:
\($\frac{a}{\sin A} = \frac{b}{\sin B} = \frac{c}{\sin C}$\)
Substituting the given values, we get:
\($\frac{c}{\sin 85^\circ} = \frac{b}{\sin 53^\circ}$\)
Solving for $c$, we get:
\($c = b \cdot \frac{\sin 85^\circ}{\sin 53^\circ}$\)
We also know that:
\($\frac{a}{\sin A} = \frac{85}{\sin 42^\circ}$\)
Solving for a, we get:
\($a = 85 \cdot \sin 42^\circ$\)
Now we can use the law of cosines to find b:
\($b^2 = a^2 + c^2 - 2ac \cdot \cos B$\)
Substituting the known values, we get:
\($b^2 = (85 \cdot \sin 42^\circ)^2 + \left[b \cdot \frac{\sin 85^\circ}{\sin 53^\circ}\right]^2 - 2 \cdot 85 \cdot b \cdot \sin 42^\circ \cdot \sin 85^\circ/(\sin 53^\circ)$\)
Simplifying and solving for b, we get:
b = 119.57 units
Therefore, the length of AC in triangle ABC is b = 119.57 units.
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don’t skip this question i have a test plz answer
Bottle A holds 3 more liters of lemonade than bottle B. If the total amount of lemonade in bottles A and B is s 11 liters, how much lemonade is there in bottle B?
Ami needs to divide these base-ten blocks into 5 equal groups.
Describe a model that would show how many are in each group.
The model will contain
ten and
ones in each group.
Step-by-step explanation:
The model will contain 1 ten and 4 ones in each group.
Some factors need to be controlled to keep this test fair. name two of them….
Two factors that need to be controlled to keep this test fair are the temperature and the sample volume.
What are the control variables?The control variables are those variables that should be kept constant in order to avoid interfering with the free flow of the experiment.
For the provided test, it is important that the temperature of the environment where the test sample is kept is controlled throughout the duration of the experiment so that some results are not affected by this. Also, the sample volume should be controlled for fair outcomes.
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A phone receives signals from a transmitter that is 13km west and 21km south of it. what is the bearing from the phone to the transmitter? give your answer to the nearest degree
The bearing from the phone to the transmitter is approximately 31 degrees to the east of the north direction.
To determine the bearing from the phone to the transmitter, we can use trigonometry.
The bearing is typically measured clockwise from the north direction.
Given that the transmitter is 13 km west and 21 km south of the phone, we can form a right triangle with the phone as the vertex angle.
The side opposite to the vertex angle represents the north-south direction, and the side adjacent to the vertex angle represents the east-west direction.
Using the tangent function, we can calculate the angle:
tangent(angle) = (opposite side) / (adjacent side)
tangent(angle) = 21 km / 13 km
Taking the inverse tangent (arctan) of both sides, we find:
angle = arctan(21 km / 13 km)
Evaluating this using a calculator, we find the angle to be approximately 58.57 degrees.
However, since the bearing is measured clockwise from the north, we need to subtract this angle from 90 degrees (which represents the north direction) to obtain the bearing:
bearing = 90 degrees - 58.57 degrees
Calculating this, we find the bearing to be approximately 31.43 degrees.
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Right triangles ABC and DBC
Answer:
The writing is blurry. Please snap again in closer range
The graph of the piecewise function f(x) is shown.
What is the range of f(x)?
6
5
O {x1-2 sx<4)
O {x1-2
Oy1-5
O {1-5 sys-1)
3+
2+
1
-7 -6 -5 -4 -3
-
1
3
4
5
8
The range is virtually the answer to the question,
"In which interval can find all y-values of the function".
So you look at the y-axis and see that your function begins with \(y=-5\) (including -5 because of the dot on the graph) and ends at including \(y=-1\).
So the interval notation is,
\(y\in[-5,-1]\)
But you are asked to specify the set notation of the interval, to do so first rewrite the interval using inequality operators, say we find some y in between (and including) -5 and -1,
\(-5\leq y\leq-1\)
To specify that this is a set use curly bracelets and a bar,
\(\{y\mid-5\leq y\leq-1\}\).
The y before bar is a step function and everything followed after the vertical bar is the range of the step function.
Hope this helps.
Using it's concept, it is found that the range of f(x) is given by:
{y|-5 <= -y <= -1}
What is the range of a function?The range of a function is the set that contains all possible output values. In a graph, it is given by the values of y, that is, the values of the vertical axis.
In the function described by this graph, the vertical axis assumes values between -1 and -5, inclusive, hence the range is given by:
{y|-5 <= -y <= -1}
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Y+2=-3(x-4) find the missing value
Answer:
(4,-2)
Step-by-step explanation:
plug in and simplify;
y+2=-3(x-4)
-2+2=-3(x-4)
0=-3x+12
3x=12
x=4
pls solve then too
Answer:
13)
Given:
x = 3
y = 1.5
We exchange these values into our equation (2x + 4y + 3x);
2x + 4y + 3x
Altered, would be:-
2(3) + 4(1.5) + 3(3)
6 + 6 + 9
= 21
15) First, we need to find the volume of the cube;
1/2(one side), but since all sides to a cube are equal we multiply that length by itself 3 times.
So;
1/2 x 1/2 x 1/2 = 1/8 is the volume of one cube.
Now we find the rectangular prism's volume, using the formula;
V(volume) = W x H x L
Where 'W' represents the width, 'H' represents the height, and 'L' represents the length.
Substitute these values in our formula:
V = W x H x L
V = 2 1/2 x 8 x 1/2
V = 5/2 x 8 x 1/2
V = 5/2 x 8/2
V = 5/2 x 4
V = 10
So now, we divide the total volume by the volume of one cube to get the total of how many cubes would be needed to fill this prism.
10 ÷ 1/8
10 x 8/1
10 x 8
= 80
In the diagram, the parallel lines are cut by transversal BC−→−.If BD−→− bisects ∠ABC and m∠3 = 80, what is m∠ABD?
The value of m ∠ABD will be;
⇒ ∠ ABD = 50°
What are Parallel lines?Parallel lines are those lines that are equidistance from each other and never intersect each other.
Given that;
In the diagram, the parallel lines are cut by transversal BC.
And, BD bisects ∠ABC and m∠3 = 80.
Now,
Since, The parallel lines are cut by transversal BC.
Hence, We get;
⇒ ∠ 3 + ∠ 2 = 180°
⇒ 80° + ∠ 2 = 180°
⇒ ∠ 2 = 180 - 80
⇒ ∠ 2 = 100
And, We have;
⇒ ∠ 2 = ∠ ABC
⇒ ∠ ABC = 100°
Since, BD bisects ∠ABC.
Hence, We get;
⇒ ∠ ABD = 100 / 2
⇒ ∠ ABD = 50°
Thus, The value of m ∠ABD = 50°
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The graph shows the relationship between the number of bags of wild rice in a
restaurant and the total number of pounds of wild rice in those bags.
Which statement is NOT correct?
Inventory of Wild Rice
250
225
200
175
150
Pounds of Wild Rice
o 125
100
75
50
25
0 1 2 3 4 5 6 7 8 9 10
Number of Bags
A The point (2, 100) means that there are 100 pounds of wild rice in 2 bags.
B The data represents a proportional relationship.
C The equation x = 50y represents this situation
D The constant of proportionality is 50.
Answer:
C. The equation x = 50y represents this situation.
Step-by-step explanation:
Let's examine each statement given and determine if it is correct or not correct based in the information given to in the graph.
Statement A: "The point (2, 100) means that there are 100 pounds of wild rice in 2 bags."
✅This is CORRECT because from the graph, on the x-axis (number of bags), when x = 2, y on the y-axis (pounds of wild rice) is 100.
Statement B: "The data represents a proportional relationship".
✅This is CORRECT because a graph that shows a proportional relationship between x and y, has a line that cuts through the point of origin (0, 0).
Statement C: "The equation x = 50y represents this situation".
❌This is NOT CORRECT. The equation does not represent a proportional relationship between x and y. The correct equation should be y = 50x. Where 50 is the constant of proportionality. That is y/x.
Statement D: "The constant of proportionality is 50."
✅this is CORRECT because constant of proportionality = y/x = 100/2 = 50.
Catherine graphed point P on the coordinate grid. She will graph point Q at a location that is 4 units left and 3 units up from point P.
which ordered pair could represent the location of point Q?
A student is solving the equation 2|x-3|=8
Answer:
Student most likely forgot to form 2nd equation.
Step-by-step explanation:
The answers appear to be cut off, but I can clearly see that the other solution isn't considered. When solving an absolute value equation, you form two equations. In this case, we have x-3=4 and x-3=-4 as our equations because |-4|=|4|=4 so this is accounted for. Hence, the two solutions should be x=7 AND x=-1.