Answer:
t2=8/5
Step-by-step explanation:
using this formula
t1/s1 =t2/s2
4/5=t2/2
cross multiply
5t2=8
t2=8/5
The correct answer for the value of t₂ is [tex]1.6[/tex].
Given:
Time t₁ = 4,
Distance s₂ =2
Distance s₁ = 5.
To find value of t₂ , use the concept of proportion:
[tex]\dfrac{t_1}{s_1} = \dfrac{t_2}{s_2}[/tex]
Put value of [tex]t_1 ,s_1 ,s_2[/tex]:
[tex]\dfrac{t_2}{2} =\dfrac{4}{5}\\\\t_2 =\dfrac{8}{5}\\\\ t_2 = 1.6[/tex]
The correct value of [tex]t_2[/tex] is [tex]1.6[/tex].
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Help asap please!
What is sin(B)?
5
√61
sin(B):
6 [?]√[]
B
=
Answer:5SQRT61/
61
Step-by-step explanation:
1.
Berkley is flying a kite. The string is all the way out, which means it is 425 meters away. Berkley is looking up at the kite at an angle of 42°. Berkley's dog is watching the kite too and the angle from Berkley to the dog to the kite is 87°. How would you find the distance between the kite and the dog? Is it possible? Explain your answer using the law of sines.
Using the law of sines, it is found that the distance between the kite and the dog is of 284.77 meters.
What is the law of sines?Suppose we have a triangle in which:
The length of the side opposite to angle A is a.The length of the side opposite to angle B is b.The length of the side opposite to angle C is c.The lengths and the sine of the angles are related as follows:
[tex]\frac{\sin{A}}{a} = \frac{\sin{B}}{b} = \frac{\sin{C}}{c}[/tex]
For the situation described, we have that:
The height is opposite to the angle of 42º.The 425 meters are opposite to the angle of 87º.Hence:
[tex]\frac{\sin{42^\circ}}{h} = \frac{\sin{87^\circ}}{425}[/tex]
Applying cross multiplication:
[tex]h = 425\frac{\sin{42^\circ}}{\sin{87^\circ}}[/tex]
h = 284.77 meters.
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Solve for x. Please help I don’t understand how to do this
Answer:
x = 5
Step-by-step explanation:
There's a Secant Theorem that someone else figured out (waaaay back in history) we just need to memorize it. So a secant is a line that touches the circle in two places. Your picture has two secants that both go thru the same point that's outside the circle. The secants each have a bit that's inside the circle and a bit that's outside the circle. And we could add together the inside and outside bits and get a total for the whole thing.
The secant theorem says that the outside piece × the whole thing on one secant = the outside piece × the whole thing on the other secant.
For the secant on top the "outside" bit is 9 and the whole thing is (2x+1+9). We'll times these together.
For the bottom secant the outside piece is 10 and the whole thing is (x+3+10). We'll multiply these together.
9(2x+1+9)=10(x+3+10)
simplify.
9(2x+10) = 10(x+13)
distribute.
18x + 90 = 101x + 130
combine like terms.
8x + 90 = 130
subtract 90
8x = 40
divide by 8
x = 5
see image.
Graph the line passing through (−4,−1) whose slope is m=−4/5
the answer is (-4,-1) and (1,-5)
with the law of indices simplify 3a²b×2ab
Answer:
6a³b²
Step-by-step explanation:
3 × 2 = 6
a²× a¹ = a³
b × b = b²
I just need to know what the answer is
Answer:
C
Step-by-step explanation:
Find two positive numbers whose difference is 9 and whose product is 2950.
Answer: 50 and 59
I divided 2950 by 25 because I knew it would somehow factor into that since it ends in 50. Then, I got 25 and 118. From there, I just divided 118 by 2 since I knew that it would end in a 9 and I multiplied 25 by 2. Not sure if this is really helpful, but you also try using a GCF calculator and look up all the factors of that number next time!
Jocelyn has a ladder that is 15 ft long. She wants to lean the ladder against a vertical wall so that the top of the ladder is 13.5 ft above the ground. For safety reasons, she wants the angle the ladder makes with the ground to be less than 75°. Will the ladder be safe at this height? Show your work and equation to support your answer
By using trigonometric relations, we will see that the angle that the ladder makes with the ground is 64.2°, so we conclude that the ladder is safe.
Will the ladder be safe at this height?Notice that the ladder makes a right triangle with the wall.
Such that the hypotenuse (the ladder itself) measures 15 ft, and one of the catheti (distance between the ground and top of the ladder) measures 13.5ft
If we considerate the angle that the ladder makes with the ground, the known cathetus is the opposite cathetus.
Then we can use the relation:
sin(x) = (opposite cathetus)/(hypotenuse)
Then:
sin(x) = (13.5ft)/(15ft)
If we use the inverse sine function on both sides, we get:
Asin(sin(x)) = Asin( 13.5ft/15ft)
x = Asin(13.5/15) = 64.2°
So the angle is less than 75°, which means that in fact, the ladder is safe.
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If f ( x ) = x 2 and g ( x )= 2x - 2,
find f ( g ( 7 ) )
Answer:
144
Step-by-step explanation:
First find g(7) --
[tex]g(7)=2(7)-2\\=14-2\\=12[/tex]
Then plug 12 into f(x) --
[tex]f(12)=(12)^{2} \\=144[/tex]
chef John bought 3 dozen eggs for $16.20 what is the unit price a $10.80 per 2 dozen eggs b $5.40 per 12 eggs c $0.45 per eggs d $0.22 per eggs e none of these f I don't know this yet
A box contains 5 reams of paper. How could you estimate the thickness of 2 sheets of paper? One ream of paper is 500 sheets.
Please provide deep explanation so i can learn and understand
The estimated thickness of 2 sheets of paper, given the parameters, is 0.0216 cm.
What is the thickness of a sheet of paper?The thickness of a sheet of paper can be measured using a screw gauge or vernier caliper.
If the thickness of a ream of paper, which contains 500 sheets, is given, a sheet will be x/500 thick.
The thickness of 2 sheets of paper will be the thickness of a sheet multiplied by 2.
Data and Calculations:
Number of reams of paper in a box = 5 reams
1 ream = 500 sheets
500 sheets = 5.4 cm thick
The thickness of 2 sheets of paper = 0.0216 cm {5.4cm x 2/500)}
Thus, the estimated thickness of 2 sheets of paper, given the parameters, is 0.0216 cm.
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Question Completion:Assume that one ream of paper is 5.4 cm thick.
Can u guys please give me the correct answer
Answer:
∠ 3 = 65°
Step-by-step explanation:
∠ 2 and 115° are a linear pair and sum to 180° , that is
∠ 2 + 115° = 180° ( subtract 115° from both sides )
∠ 2 = 65°
∠ 2 and ∠ 3 are corresponding angles and and are congruent , then
∠ 3 = 65°
I hope you could get this answer
Answer: -12
Step-by-step explanation: x is -4 so -(-4) is positive 4. d = 3 so -3 = -3. -3x4 = -12.
what is Z in the rhombus?
Answer: 27°
Step-by-step explanation:
The easiest way to find the measure of angle Z is to know that in a rhombus, the diagonals are perpendicular bisectors of each other. This means that all the four angles in the center are 90°.
Since we know that all angles in a triangle add up to 180°, we can set the sum of z, 63, and 90 to be 180 and solve for z.
[tex]z+63+90=180\\z+153=180\\z=27[/tex]
Hence, z is 27°.
6 A survey was given to 12th-grade students of West High School to
determine the location for the senior class trip. The results are shown
in the table below.
To the nearest percent, what percent of the boys chose Niagara Falls?
Total of 24.03% of boys choose Niagara falls.
What is a frequency table?
A frequency table is a list of objects with the frequency of each item shown in the table.
The quantity of times that an event or value occurs is its frequency.
A frequency table, then, is a table that contains some facts and their frequency.
Given,
Total number of boys
56 + 74 + 103 = 233
Number of boys who chose Niagara falls = 56
Percentage of 56 out of 233
(56/233) × 100⇒ 24.03%
Hence the percent of the boys chose Niagara Falls will be 24.03%.
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Will give 30 pts!
What is:
27+ 8 x 41- 23 =
What is the value of b?
The value of b as described in the task content by means of solving the two equations simultaneously is; b= -10.
What is the value of b from the given equations?The given simultaneous equations as indicated have been manipulated to determine the value of a which is; 0.5 in the task content.
Hence, by substituting a= 0.5 into the equation; 5 = 30a + b; we have;
5 = 30(0.5) + b
b = 5- 15 = -10.
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Mathematics problem..
Answer:
a) x + 10 = 45
b) 3 = 6 - x
c) d = s * t
Step-by-step explanation: This is actually pretty simple. Let's put down one theorem.
SYMMETRIC THEOREM OF PROPERTIES: If a equals b, then b must equal a. Thus, a = b and b = a.
This is all we're really doing.
Take a) for example, 45 = x + 10. Let's label (45) as A, and (x + 10) as B. Thus we have A = B. Now we know by the Symmetric Property, we have B = A. Thus, substituting B and A again, we get x + 10 = 45.
Just keep doing this with all the equations.
Hope this helped!
Please help quick what is the answer thank you
Answer:
y= -3x+4
Step-by-step explanation:
y=mx+c
m= y2-y1 ÷ x2-x1
m= -3
y=-3x+c
7=-3(-1)+c
c=4
y=-3+4
A client named Tommy wants us to prepare a 3300-word Marketing Report + Poster. If a task is quantifiable by word count, we charge $110 per 1000 words. If a task is not quantifiable by word count, we estimate how many hours are required to complete the task and we charge based on $5 per hour. How much should we charge Tommy? Work out the total price.
The amount we should charge Tommy is $363.
What does the amount charged mean?When you charge someone money, you are requesting payment from them in exchange for something you have either sold to them or performed for them.The total sum that the Owner is obligated to pay under the charge obligations as outlined in the payment schedule is referred to as the "Total Charge Amount."How much should we charge Tommy:
The amount charged for 1000 words = $110
The amount charged per word = $110/1000
Amount to be charged for 3300 words = $(110/1000) × 3300
= $(0.11) × 3300
= $363
The amount we should charge Tommy is $363.
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Given the two similar octagons
shown below, find the perimeter
of the larger octagon.
28
Perimeter = 34
4
6 4
3
4
7
3
3
The perimeter of the bigger octagon that is similar to the smaller one is: 238 units.
What is an Octagon?An octagon can be described as a polygon that has 8 sides and 8 angles.
What are Similar Octagons?
Octagons are referred to as similar to each other if they have the same angle measure but corresponding sides that are proportional to each other. That is, they have the same shape but different sizes.
How to Find the Perimeter of Similar Polygons?
Given the two octagons in the diagram are similar, and:
Perimeter of the smaller octagon = 34 units
A side of the smaller octagon = 4 units
Perimeter of the bigger octagon = ?
A corresponding side of the bigger octagon = 28 units
Therefore:
Perimeter of the smaller octagon/Perimeter of the bigger octagon = side of the smaller octagon/corresponding side of the bigger octagon
Plug in the values
34/Perimeter of the bigger octagon = 4/28
Perimeter of the bigger octagon = (28 × 34)/4
Perimeter of the bigger octagon = 238 units.
In summary, the perimeter of the bigger octagon is: 238 units.
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Draw a line between the points representing wicket 3 and wicket 9 on the diagram. Then, find the
area of the rectangle. Show your work and round your answer to the nearest hundredth.
Based on the calculations, the area of a rectangle to the nearest hundredth is equal to 1143.92 ft².
How to calculate the area of a triangle?Mathematically, the area of a triangle can be calculated by using this formula:
Area = 1/2 × b × h
Where:
b represents the base area.h represents the height.By drawing a line between the points representing wicket 3 and wicket 9, we can logically deduce that wicket 2 forms a perpendicular bisector. Thus, the distance between the points representing wicket 3 and wicket 9 is given by:
Distance = 1/2 × 36.77
Distance = 36.77/2
Distance = 18.39 ft.
For the height of this triangle, we would apply Pythagorean's theorem:
h² = 25.02² - 18.39²
h² = 626.0004 - 338.1921
h² = 287.8083
h = √287.8083
h = 16.97 ft.
Area of triangle = 1/2 × b × h
Area of triangle = 1/2 × 36.77 × 16.97
Area of triangle = 311.99 ft².
For area of the rectangle, we have:
Mathematically, the area of a rectangle can be calculated by using this formula;
Area = LW
Area = 36.77 × 31.11
Area = 1143.92 ft².
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How many numbers are in the list 433, 429, 425, .... -103, -107?
The negative really confuses me
Answer:
135
Step-by-step explanation:
You can add the number which are in negative o
as well
The number is in descending order by 4.
Then add the first and last number i.e.
433+107===> 540
divide 540 by 4
540/4
= 135
how do I solve this? I attached a screenshot
Answer:
[tex]P(x) -0.1(x+1)(x-3)^2[/tex]
Step-by-step explanation:
So you can express a polynomial in factored form, where each factor of the polynomial is being multiplied by each other to get the original polynomial as such: [tex]p(x) = a(x+a)(x+b)(x+c)...[/tex] notice the a in front? Sometimes the value is 1, sometimes it's not, and I'm assuming it's not 1, since the y-intercept is given.
Anyways, when we express a polynomial in factored form: [tex]p(x) = a(x+a)(x+b)(x+c)...[/tex], it's pretty easy to see that -a, -b, and -c are roots, since if we plug in -a, the factor (x+a) becomes (-a + a) = 0, and since the factors are being multiplied by each other, the value p(-a) will be 0, since 0 * some value = 0.
The next thing to know is what multiplicity means. It essentially means when you have the same root "multiple times", or in other words it's the degree of the factor. For example: [tex]f(x) = (x+a)^3(x+b)^2(x+c) = (x+a)(x+a)(x+a)(x+b)(x+b)(x+c)[/tex], if you took each factor, you would see that the root -a shows up 3 times, thus the multiplicity is 3, which can also be determined by just looking at the initial degree... 3. The same thing goes for b and c, except for c, the degree isn't explicitly said, it's just 1.
Since we have a zero at x=3 one of the factors will be (x-3) since plugging in 3 to this makes it 0. But this has a multiplicity of 2, so the degree of the this factor is 2. So for we have the polynomial: [tex]p(x) = (x-3)^2[/tex]
Since we have a zero at x=-1, one of the factors will be at (x+1), since plugging in 1 into this makes the value 0. This has a multiplicity of 1, and you can write the degree 1, but if you don't explicitly write it, it can just be assumed to be 1, since a^1=a
So now we have the polynomial: [tex]p(x) = (x+1)(x-3)^2[/tex]
So let's just assume we have an "a" value in front as mentioned in the very beginning, we have the polynomial: [tex]p(x) = a(x+1)(x-3)^2[/tex] and we can solve for this value, using any point except for the zeroes. We can use the y-intercept given to solve for a
Plug in 0 as x (by definition of y-intercept) and set p(x) = -0.9
[tex]-0.9 = a(0+1)(0-3)^2[/tex]
Subtract/add values
[tex]-0.9 = a(1)(-3)^2[/tex]
Simplify
[tex]-0.9 = 9a[/tex]
Divide both sides by 9
-0.1 = a
So now let's plug this into our polynomial to get the final result!
[tex]P(x) -0.1(x+1)(x-3)^2[/tex]
Calculate the perimeter and area of this shape.
Perimeter =
Perimeter → 25cm
Area → 25.5cm²
Explanation:[tex]perimeter = > 2.5 \times 2 + 5.5 + 3.5 + 6 + 3 + 2 = 5 + 9 + 9 + 2 = 25[/tex]
[tex]area = > 3 \times \frac{1}{2} \times 2 + 3 \times 3.5 + 6 \times 2 = 3 + 12 + 10.5 = 25.5[/tex]
PLEASE ASAP!! ALSO PLEASE INCLUDE AN EXPLANATION OF HOW YOU GOT THE ANSWER!!! THANK YOU! BTW THERE ARE TWO PICTURES! :)
2/3 is 400% of 1/6
0.2 is 12.5% of 1 3/5
Calculating PercentagesFrom the question, we are to determine what percent of 1/6 is 2/3
Let the value be x
Thus,
We can write that
2/3 is x% of 1/6
This means
2/3 = x/100 × 1/6
Now, solve for x
2/3 = x/100 × 1/6
2/3 = x/600
x = (2×600)/3
x = 400
Hence, 2/3 is 400% of 1/6
We are to determine what percent of 1 3/5 is 0.2
Let the value be y
That is,
0.2 is y% of 1 3/5
This can be written as
0.2 = y% × 1.6
0.2 = y/100 × 1.6
Now, solve for y
0.2 = y/100 × 1.6
0.2 = 1.6y/100
1.6y = 0.2 × 100
1.6y = 20
y = 20/1.6
y = 12.5
Hence, 0.2 is 12.5% of 1 3/5
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16 cups are to 1 gallon as x cups are to 5 gallons.
Answer:
80 cups
Step-by-step explanation:
QUESTION IS DOW BELOW 15 POINTS EACH PLEASE HELP PLEASE HELP PLEASE HELP
a. Angle BAC is a central angle.
b. Arc BEC is a major arc.
c. Arc BC is a minor arc.
d. m(BEC) = 260°
e. m(BC) = 100°
What is a Major Arc?An arc that has a measure that is greater than 180 degrees or is greater than a semicircle (half a circle) is referred to as a major arc.
What is a Minor Arc?An arc that has a measure that is less than 180 degrees or is not up to a semicircle (half a circle) is referred to as a minor arc.
What is a Central Angle?A central angle can be described as an angle with a vertex at the center of a circle and has two radii of the circle at sides.
a. Angle BAC is a central angle.
b. Arc BEC is a major arc.
c. Arc BC is a minor arc.
d. m(BEC) = 360 - 100 [central angle theorem]
m(BEC) = 260°
e. m(BC) = angle BAC = 100° [central angle theorem]
m(BC) = 100°
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You will have to solve the equation to get the number. Put your math skills to the test! Make sure to put your number in numeric form and in 3 digits. (not using pemdas, left to right)
Equation:
2 x 4 + 48000 / 8 - 1 x 30 x 2 + 40000
The value of the expression 2 x 4 + 48000 / 8 - 1 x 30 x 2 + 40000 is 400000
How to solve the equation?The equation is given as:
2 x 4 + 48000 / 8 - 1 x 30 x 2 + 40000
From the question, we understand that the expression is to be solved from left to right (without using the pemdas mathematical rule)
So, we start by multiplying 2 and 4
2 x 4 + 48000 / 8 - 1 x 30 x 2 + 40000 = 8 + 48000 / 8 - 1 x 30 x 2 + 40000
Add 8 and 48000
2 x 4 + 48000 / 8 - 1 x 30 x 2 + 40000 = 48008 / 8 - 1 x 30 x 2 + 40000
Divide 48008 by 8
2 x 4 + 48000 / 8 - 1 x 30 x 2 + 40000 = 6001 - 1 x 30 x 2 + 40000
Subtract 1 from 6001
2 x 4 + 48000 / 8 - 1 x 30 x 2 + 40000 = 6000 x 30 x 2 + 40000
Multiply 6000 and 30
2 x 4 + 48000 / 8 - 1 x 30 x 2 + 40000 = 180000 x 2 + 40000
Multiply 180000 by 2
2 x 4 + 48000 / 8 - 1 x 30 x 2 + 40000 = 360000 + 40000
Evaluate the sum
2 x 4 + 48000 / 8 - 1 x 30 x 2 + 40000 = 400000
Hence, the value of the expression 2 x 4 + 48000 / 8 - 1 x 30 x 2 + 40000 is 400000
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what is the area of a polygon with verticies of (-2,2), (3,2), (7,-5) and (-2,-5)
Check the picture below.
[tex]\textit{area of a trapezoid}\\\\ A=\cfrac{h(a+b)}{2}~~ \begin{cases} h~~=height\\ a,b=\stackrel{parallel~sides}{bases~\hfill }\\[-0.5em] \hrulefill\\ a=5\\ b=9\\ h=7 \end{cases}\implies \begin{array}{llll} A=\cfrac{7(5+9)}{2}\implies A=\cfrac{7(14)}{2} \\\\\\ A=49 \end{array}[/tex]