_______________________________
Hey!!!
Solution,
2x+2x+3x=77
or,7x=77
or,X=77/7
X=11
Replacing value,
2x=2*11
=22
3x=3*11
=33
So, Brian gets £ 22.
Kritika gets £ 22
Peter gets £ 33
Hope it helps...
Good luck on your assignment
_____________________________
Three numbers X,Y, and Z are in the ratio 2:7:8. If 12 is subtracted from Y, then three numbers form a geometric sequence (in the order X,Y-12, Z). Find X,Y,and Z
I found 8,28,32 works but i need another answer. Please HELP!
The three numbers that form a geometric sequence are 8,28,32
The first three terms of a geometric sequence are:
U₁. U₂, U₃ and can be expressed as
a,ar,ar²
Where r is the common ratio
In the given problem, this is equal to: x, y-12, z
The ratio is given:
x : y : z = 2 : 7 : 8
Hence,
x/y = 2/7 or 7x= 2y .... (equation 1)
and
z/x = 8/2 = 4
Take the ratio of the 3rd term and 1st term of the geometric sequence:
U₃/U₁ = ar²/a = r²
This is equal to: z/x
Hence,
z/x = r² = 4
r = 2
U₂/U₁ = ar/a = r = 2
(y-12) / x = 2
2x = y - 12 ..... (multiply by 2)
4x = 2y - 24
Substitute 2y = 7x from equation 1
4x = 7x - 24
3x = 24
x = 8
y = 7/2 x = (7/2) (8) = 7×4 = 28
z = 4x = 4×8 = 32
Hence, the numbers are: 8,28,32
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Help pls? I need help. Which one is it
Answer:
the Answer is c I just had the same problem
a ___ is one of two pieces of a double cone divided at the vertex.
A frustum is one of two pieces of a double cone divided at the vertex. A double cone is a three-dimensional shape that is created by connecting two cones with their vertices touching.
When the double cone is cut through the vertex, it creates two pieces known as frustums. A frustum has a circular base and a smaller circular top, which are parallel to each other. The height of the frustum is the distance between the two circular bases.
The volume of a frustum can be calculated using the formula V = (1/3)h(a^2 + ab + b^2), where h is the height, a is the radius of the larger base, and b is the radius of the smaller top. Frustums are commonly found in architecture and engineering, such as in the design of buildings and bridges.
A "napped cone" is one of two pieces of a double cone divided at the vertex. When a double cone is bisected through its vertex, it results in two identical, mirror-image napped cones. These geometric shapes have various applications in mathematics, engineering, and design due to their unique properties.
Napped cones share some characteristics with regular cones, such as having a circular base, but their pointed vertex is replaced by a flat plane where the double cone was divided. This creates a shape that is both symmetrical and easy to manipulate for various purposes.
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Tanya spends 2 hours to edit a 5 minute long video. She edits at a constant rate.
How long does Tanya spend to edit a 15 minute long video?
Answer:
6 hours - 5 = 2, so 15 = 6 , as its constant
A trapezoid has an area of 66 square miles. One base is 8 miles long. The height measures 12 miles. What is the length of the other base?
Check the picture below.
\(\textit{area of a trapezoid}\\\\ A=\cfrac{h(a+b)}{2}~~ \begin{cases} h~~=height\\ a,b=\stackrel{parallel~sides}{bases~\hfill }\\[-0.5em] \hrulefill\\ a=8\\ h=12\\ A=66 \end{cases}\implies 66=\cfrac{12(8+b)}{2} \\\\\\ 66=6(8+b)\implies \cfrac{66}{6}=8+b\implies 11=8+b\implies 3=b\)
this distance-time graph represents journey made by jo. at what speed was jo moving for the last 30 mins of the journey
Answer:
A)Jo arrived at the destination and prepared to return.
B)8km/h
Step-by-step explanation:
divide 30 by 3.75 which will give you 8km/h.
Hope this helps.
a pizza has a radius of 2.5 feet what is the circumference of the pizza
3 . The region R enclosed by the curves y = x and y = x² is rotated about the x-axis. Find the volume of the resulting solid. (6 pts.)
the volume of the solid obtained by rotating the region R about the x-axis is π/6 cubic units.
To find the volume of the solid obtained by rotating the region R enclosed by the curves y = x and y = x² about the x-axis, we can use the method of cylindrical shells.
The volume of a solid generated by rotating a region about the x-axis using cylindrical shells is given by the integral:
V = ∫[a,b] 2πx * f(x) dx
In this case, the region is bounded by the curves y = x and y = x², so the limits of integration will be the x-values where these curves intersect.
Setting x = x², we have:
x² = x
x² - x = 0
x(x - 1) = 0
So, x = 0 and x = 1 are the points of intersection.
The volume of the solid is then given by:
V = ∫[0,1] 2πx * (x - x²) dx
Let's evaluate this integral:
V = 2π ∫[0,1] (x² - x³) dx
= 2π [x³/3 - x⁴/4] evaluated from 0 to 1
= 2π [(1/3) - (1/4) - (0 - 0)]
= 2π [(1/3) - (1/4)]
= 2π [4/12 - 3/12]
= 2π [1/12]
= π/6
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Can someone please help? I will mark brainliest
Answer:
Standing rectangle= 7 heptagon equal to 20 rectangle horizontal = 4 circle equal to 8
Step-by-step explanation:
please help! I need help asap
Step-by-step explanation:
5.
normally no.
just think - we are talking about people. it's it possible to have half of a friend at a game ?
no, the input is not possible.
but if this function is used in the context or a larger analysis, and mean values are created and checked, then it might be valid.
it all depends on the context of how the function is used.
2.
we don't see all answer options, but the range is the interval or set of all valid y-values (the 2nd number in an ordered pair).
we see : -1, 3, 4, 6
whichever answer option shows this is correct.
what is 3fg when f=2 and g=5 in algebra
is it 30? or is it something else
Answer:
30
Step-by-step explanation:
3fg f = 2 and g = 5
3 · 2 · 5 = 30
So, the correct answer is 30
a person eating at a cafeteria must choose 3 of 19 vegetable on offer. calculate the number of elements in the sample space for this experiment
The number of elements in the sample space for this experiment is 969.
If a person eating at a cafeteria must choose 3 of 19 vegetables on offer, we can calculate the number of elements in the sample space, or the total number of possible outcomes, using the formula for combinations:
nCr = n! / [r!(n - r)!]
where n is the total number of items in the set and r is the number of items being chosen.
In this case, we have 19 vegetables and we want to choose 3 of them, so we can plug in n = 19 and r = 3:
19C3 = 19! / [3!(19 - 3)!]
= 19! / (3!)(16!)
= 969
Therefore, there are 969 possible combinations of 3 vegetables that a person can choose from a selection of 19 vegetables.
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9. Classify the shapes shown below. Write the letter of each shape in the category that
describes it. Shapes may fall into more than one category, and not all shapes will be
used.
A
At Least 1
Right Angle
B
C
At Least 2 Sides of
Equal Length
D
E
At Least 1 Pair of
Parallel Sides
At least one right angle: A + C + E
At least 2 sides of equal length: B + C + E
At least one pair of parallel sides: A + B + E
What's a right angle?It should be noted that in geometry and trigonometry, a right angle is an angle of exactly 90 degrees or pi /2 radians corresponding to a quarter turn.
In this case, if a ray is placed so that its endpoint is on a line and the adjacent angles are equal, then they are right angles
When two straight lines intersect each other at 90˚ or are perpendicular to each other at the intersection, they form the right angle.
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-5
for
f(x) =
- 4 < x < 1
1
- X – 5
for
Answer:
the total cost for roller skating depends on the number of hours a person skates. which equation represents the relationship btw the cost c and the ...
1 answer
·
20 votes:
To answer this item, we let n be the number of hours that a person spend on th the total cost for roller skating depends on the number of hours a person skates. which equation represents the relationship btw the cost c and the ...
1 answer
·
20 votes:
To answer this item, we let n be the number of hours that a person spend on th the total cost for roller skating depends on the number of hours a person skates. which equation represents the relationship btw the cost c and the ...
1 answer
·
20 votes:
To answer this item, we let n be the number of hours that a person spend on th the total cost for roller skating depends on the number of hours a person skates. which equation represents the relationship btw the cost c and the ...
1 answer
·
20 votes:
To answer this item, we let n be the number of hours that a person spend on th the total cost for roller skating depends on the number of hours a person skates. which equation represents the relationship btw the cost c and the ...
1 answer
·
20 votes:
To answer this item, we let n be the number of hours that a person spend on th the total cost for roller skating depends on the number of hours a person skates. which equation represents the relationship btw the cost c and the ...
1 answer
·
20 votes:
To answer this item, we let n be the number of hours that a person spend on th the total cost for roller skating depends on the number of hours a person skates. which equation represents the relationship btw the cost c and the ...
1 answer
·
20 votes:
To answer this item, we let n be the number of hours that a person spend on th
Step-by-step explanation:
8x + 9+ 4(x + 3) + 3 =
(Simplify your answer.)
Each group of variables and numbers, separated by addition and subtraction signs, is called a(n) ____________________ of the equation.
Answer:
Term
Step-by-step explanation:
The Mariana trench, off the coast of Guam in
the Pacific Ocean, is 11 034m deep. Write 11
034 in standard form.
Answer:
11,000 + 30+4
Step-by-step explanation:
How do you convert 50 Kilogram (kg) to Pound (lb)?
Multiply the mass in kilogrammes by 2.2046226218 to convert 50 kg to pounds.
What makes anything a lb?Libra pondo, which meaning "a pound by weight," was the unit of measurement in ancient Rome when the word "pound" first appeared. According to the BBC, the pondo portion of the sentence is where the English term "pound" originates. However, the word's libra portion is where the abbreviation "lb" comes from.Follow these easy procedures to convert a weight or mass measurement from kilogrammes (kg) to pounds (lbs): Add the conversion factor 2.2046 to the weight. Therefore, 50 kg would be equal to 110.23 kg when multiplied by 2.2046.Multiply the mass in kilogrammes by 2.2046226218 to convert 50 kg to pounds. [lb] = 50 * 2.2046226218 is the formula to convert 50 kilogrammes to lbs.To learn more about Kilogram refer to:
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a measurement using a ruler marked in cm is reported as 12 cm. what is the range of values for the actual measurement?
A measurement using a ruler marked in cm is reported as 12 cm. The range of values for the actual measurement can be from 11.5 cm to 12.5 cm.
A measurement is a quantification of a characteristic, such as the weight, height, volume, or size of an object. Measurements of physical parameters such as length, mass, and time are commonly used.
The size of a quantity, such as 12 meters or 25 kilograms, is usually given as a number.
The value of the quantity is the numerical answer, while the unit is the type of measurement used to express it.
In the question, it is given that a measurement is reported as 12 cm, but the actual measurement can have some deviations or uncertainties. This deviation is called the uncertainty of the measurement.
The range of values for the actual measurement can be given by the formula:
Measured value ± (0.5 x smallest unit)where 0.5 is the uncertainty associated with the measurement using a ruler marked in cm
.In this case, the smallest unit is 1 cm, so the range of values for the actual measurement can be calculated as:
12 cm ± (0.5 x 1 cm)
= 12 cm ± 0.5 cm
Therefore, the range of values for the actual measurement is from 11.5 cm to 12.5 cm.
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robin is twice as old as earl and adam is 8 years younger than earl. in 6 years robin will be three times as old as adam. find their present ages
The present age of Earl is 12 years, Robin is 24 years and Adam is 4 years old.
Let us consider the present age of Earl to be x years.
According to the given question, the present age of Robin is twice that of Earl = 2x
And since it is given that Adam is 8 years younger than Earl, then his age
= x - 8
After 6 years, the age of Earl will be x + 6
Robin's age will be = 2x + 6
Adam's age will be = x - 8 + 6 = x - 2
According to the given question, Robin's age will be thrice the age of Adam.
Hence, 2x + 6 = 3 (x - 2)
⇒ 2x + 6 = 3x - 6 ⇒ 6 + 6 = 3x - 2x ⇒ 12 = x
Thus, the present age of Earl is 12 years,
Robin's age = 2x = 2 x 12 = 24 years
Adam's age = x - 8 = 12 - 8 = 4 years
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I NEED HELP WITH THIS OMG
Answer:
its actually hard
Step-by-step explanation:
it is hard OMG
Answer:
∠ EDF =104°
Step-by-step explanation:
The measure of the chord- chord angle EDF is half the sum of the of the arcs intercepted by the angle and its vertical angle, that is
∠ EDF = \(\frac{1}{2}\) (arc EF + arc GU )
= \(\frac{1}{2}\) (147 + 61)°
= \(\frac{1}{2}\) × 208°
= 104°
I need help please it's just this last question i don't know of and it's about quadratics and parabolas in algebra. It's basically a crossword but the question says " a graph can have one, two or none of these" and the first letter starts with a S. i have 80 points i will give out 50 i hope that's a lot i don't know much about points in this. Thank you.
Answer:
is there an actual graph though that would really help
Step-by-step explanation:
PLEASE I WLL GIVE BRAINLIEST JUST HELPS MEEEEE OMG IM ON MY SECOND ATTEMPT PLS PLS PLS HELP
Answer:
\( \purple { \bold{ \frac{ (x - 3)}{3x - 18} }}\)
Step-by-step explanation:
\( \frac{x + 3}{ {x}^{2} + 7x + 12 } . \frac{ {x}^{2} + x - 12}{3x - 18} \\ \\ = \frac{x + 3}{ {x}^{2} + 4x + 3x + 12 } . \frac{ {x}^{2} + 4x - 3x - 12}{3(x - 6)} \\ \\ = \frac{x + 3}{ {x}(x + 4) + 3(x + 4) } . \frac{ {x}(x + 4) - 3(x + 4)}{3(x - 6)} \\ \\ = \frac{ \cancel{(x + 3)}}{ (x + 4) \cancel{(x + 3)} } . \frac{ (x + 4) (x - 3)}{3(x - 6)} \\ \\ = \frac{1}{ \cancel{ (x + 4)} } . \frac{ \cancel{ (x + 4)} (x - 3)}{3(x - 6)} \\ \\ \red{ \bold{= \frac{ (x - 3)}{3x - 18} }}\\ \\ \)
With reference to the various sampling methods, ________ is used when it is important to control where the sample is delivered and when the products are of a perishable nature.
Door to door sampling is used when it is important to control where the sample is delivered and when the products are of a perishable nature.
What is sampling?The term sampling selecting refers to the selection of a small proportion of the population extrapolating the results the results obtained from this small group to represent the characteristics of the entire population. This sample is chose in a manner as to reflect the properties the generality of the population.
Hence, door to door sampling is used when it is important to control where the sample is delivered and when the products are of a perishable nature.
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Helps pleaseee!!
The table below shows the weights of different animals. How much heavier is a hippopotamus than a giraffe?
Answer:
1 Ton is 2000 pounds so multiply that by 4 is 8000 then subtract 2500 from 8000
Answer: 5500lb
help pleaseee
you need to find x
Answer:
x+50+80=180
x=180-130
x=50
Answer:
x=50
Step-by-step explanation:
(sry for the bad writing, i cant write well on a computer)
-Todo<3
On a test called the MMPI-2, a score of 30 on the Anxiety Subscale is considered
very low. Felipe participates in a yoga group at his gym and decides to give this
subscale to 18 people in his yoga group. The mean of their scores is 35.2, with a standard deviation of 10.4. He wants to determine whether their anxiety scores are statistically equal to 30.
What are the groups for this one-sample t-test?
What is the null hypothesis for this one-sample t-test?
What is the value of "?
Should the researcher conduct a one- or two-tailed test?
What is the alternative hypothesis?
What is the value for degrees of freedom?
What is the t-observed value?
What is(are) the t-critical value(s)?
Based on the critical and observed values, should Felipe reject or retain the null
hypothesis? Does this mean that his yoga group has scores that are above 30, below 30, or
statistically equal to 30?
What is the p-value for this example?
What is the Cohen’s d value for this example?
If the " value were dropped to .01, would Felipe reject or retain the null hypothesis?
Calculate a 42% CI around the sample mean.
Calculate a 79% CI around the sample mean.
Calculate a 95% CI around the sample mean.
The MMPI-2 test is used for the assessment of psychopathology and personality of patients.
It includes 567 true-false questions, resulting in 10 clinical scales, among which one is the anxiety subscale.
A score of 30 or less is usually considered very low.
The questions are answered by the patient, usually in a clinical or research setting.
A one-sample t-test is conducted in the problem, whereby a sample of 18 participants in a yoga group is tested for anxiety scores.
The following are the parameters of the one-sample t-test:Groups:
18 participants
Null hypothesis: The anxiety scores of Felipe's yoga group are statistically equal to 30." value: 30
Type of test: One-tailed test
Alternative hypothesis: The anxiety scores of Felipe's yoga group are greater than 30.
Degrees of freedom: n - 1 = 17T-observed value: (35.2 - 30) / (10.4 / sqrt(18)) = 2.41T-critical value: 1.734
Reject or retain null hypothesis: Since the t-observed value (2.41) is greater than the t-critical value (1.734), Felipe should reject the null hypothesis, which implies that his yoga group's scores are greater than 30.P-value: 0.014Cohen’s d value: (35.2 - 30) / 10.4 = 0.5
If the " value were reduced to 0.01, Felipe would still reject the null hypothesis, since the p-value (0.014) is lower than the alpha level (0.01).
For the sample mean: 35.2CI for 42%: 35.2 ± 0.58CI for 79%: 35.2 ± 1.16CI for 95%: 35.2 ± 2.13
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How many ways are there to deal hands of five cards to each of six players from a deck containing 48 different cards
Using the combination formula, it is found that there are \(6.4 \times 10^{32}\) ways to deal the cards to the six players.
The order in which the cards are handed to each player is not important, hence the combination formula is used to solve this question.
What is the combination formula?\(C_{n,x}\) is the number of different combinations of x objects from a set of n elements, given by:
\(C_{n,x} = \frac{n!}{x!(n-x)!}\)
In this problem:
For the first player, 5 cards are taken from a set of 48.For the second player, they are taken from a set of 43.For the third for a set of 38, for the fourth from a set of 33, for the fifth from a set of 28 and for the sixth from a set of 23, hence:\(T = C_{48,5} \times C_{43,5} \times C_{38,5} \tims C_{33,5} \times C_{28,5} \times C_{23,5}\)
\(6.4 \times 10^{32}\)
There are \(6.4 \times 10^{32}\) ways to deal the cards to the six players.
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On Monday the temperature at 10 p.m at sams house was -6 Fahrenheit the temperature at 2 p.p at sams house was 2 Fahrenheit which statement about the change in temperature from 10 a.m to 2 p.m at sams house is true?
Answer:
rose 8
Step-by-step explanation:
-6fahrenheit plus 8 = 2 it took four hours to rise 8 i think
Rachael is running a 5-kilometer race with 200 participants. She knows she can complete 1 kilometer in 7.5 minutes, and she plans to keep that pace for the whole race. However, she wants to give herself some extra time to take a water break at the halfway point between each kilometer marker. Her goal is to complete the race in 38.75 minutes, and she needs to figure out how much time she can take for each water break. She creates the following table to figure out her time at each kilometer.
Answer:
0.25
Step-by-step explanation:
as she usually finishes the race in 7.5 and her time for breaks are at 7.75 all you have to do is solve a simple equation of : 7.75 - 7.50 = 0.25
Answer:0.25
Step-by-step explanation:
as she usually finishes the race in 7.5 and her time for breaks are at 7.75 all you have to do is solve a simple equation of : 7.75 - 7.50 = 0.25