A private jet flies the same distance in 8 hours that a commercial jet flies in 7 hours. If the speed of the commercial jet was 144mph less than 2 times the speed of the private jet, find the speed of each jet.
Solving a system of equations, we can see that:
Speed of the private jet: 168 mi/hSpeed of the commercial jet: 192mi/hHow to find the speeds of each jet?Let's define the variables:
P = speed of the private jet.C = speed of the commercial jet.With the given information, we can write:
P*8h = D
C*7h = D
C = 2*P - 144mi/h
So we have a system of 3 equations, where D is the distance in the problem.
With the first and second equations we can write:
P*8h = D = C*7h
Isolating P, we get:
P = C*(7/8)
Now we can replace that in the last equation:
C = 2*P - 144mi/h
C = 2*C*(7/8) - 144mi/h
And now we can solve that for C.
C - 2*(7/8)*C = - 144mi/h
C*(1 - 14/8) = -144mi/h
C*(8/8 - 14/8) = - 144mi/h
C*(6/8) = 144mi/h
C = (8/6)*144mi/h = 192mi/h
Now that we know the speed of the commercial jet, we can find the speed of the private jet.
P = C*(7/8) = 192mi/h*(7/8) = 168 mi/h
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A wedding ring costs £13000. Work out the price after a 11% price increase
Answer:
Step-by-step explanation:
Increased price = 11% of £ 13000
= 0.11 * 13000
= 1430
Price after increase = 13000 + 1430 = £ 14,430
What is 21 grains to grams?
Answer:
Step-by-step explanation:The answr is 1.36078
An image of lines p and q parallel to each other. Lines m and n are not parallel to each other. Line m, p form an angle of one hundred two degrees and an angle marked y. Lines n, q form an angle marked x and an angle of one hundred fifteen degrees.Parallel lines p and q are cut by two non-parallel lines, m and n, as shown in the figure. The value of x is degrees, and the value of y is degrees.
Answer:
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Based on the illustration, what is the relationship between angle 1 and angle 3?
1. They are complementary.
2. They are congruent angles.
3. They are supplementary.
4. They form a right angle.
Answer: 2. They are congruent angles.
Step-by-step explanation:
Angle 1 and angle 3 are vertical angles. In other words, they are "opposite" each other.
Vertical angle pairs are congruent angles, meaning the answer to this question is;
2. They are congruent angles.
Answer: They are congruent angles.
Step-by-step explanation: Complementary means the two angles equal 90°, supplementary angles are next to each other and equal 180° together, and it's obviously not a right angle, (angle that equals 90°) so we know they are congruent angles (this means that they are the same)
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please give brainliest!
Help please
Condense to a single logarithm is possible
In(6x^9)-In(x^2)
The logarithm expression can be simplified to:
In(6x^9)-In(x^2) =7·ln(6x)
How to write this as a single logarithm?There are some logarithm properties we can use here.
log(a) - log(b) = log(a/b)
log(a^n) = n*log(a)
(these obviously also apply to the natural logarithm)
Now let's look at our expression, it says that:
In(6x^9)-In(x^2)
Using the first rule, we can rewrite this as.
In(6x^9)-In(x^2) = ln(6x^9/x^2)
Now solving the quotient in the argument:
ln(6x^9/x^2) = ln(6x^7) = 7·ln(6x)
That is the expresison simplified.
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is the following a linear equation or linear expression? 2-5(x-1)
The expression 2 - 5(x - 1) is a linear expression
How to determine the type of the expressionFrom the question, we have the following parameters that can be used in our computation:
2 - 5(x - 1)
The general rule is that
Equations are represented with =Expressions do not make use of the symbolUsing the above as a guide, we have the following:
2 - 5(x - 1) is a linear expression
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HELP ME PLEASEEEEEEEEEEEEEEEE
is this relation a function? Justify your answer A: Yes, because every x- and y-value is positives B: Yes, because the number of x-values is the same as the number of y-values. C: No, because two points with the same x-value have different y-values. D: No, because two points with the same y-value have different x-values. D
What is 6(4p - 2) + 2 (5p + 2)
Answer:
34p -8
Step-by-step explanation:
6 (4p- 2) + 2 (5p + 2)
24p - 12 + 2 (5p +2)
24p - 12 + 10p + 4
34p -8
In a lab experiment, 310 bacteria are placed in a petri dish. The conditions are such
that the number of bacteria is able to double every 30 hours. How long would it be, to
the nearest tenth of an hour, until there are 440 bacteria present?
The answer:
15.157059248=15.2(When rounded to the nearest tenth)
how would I find the equation of this graph
Answer:
y = sec(x-2) - 1
Step-by-step explanation:
We can determine the graph is of a secant by the repeating parabolas. From there, graph sec(x) and add the transformations necessary to replicate the graph.
GIVING OUT 50+ PTS IF YOU GET THIS RIGHT
Answer: 297
Step-by-step explanation:
a=6n-3
a=6(50)-3
a=300-3
a=297
Use the Law of Sines to solve (if possible) the triangle: A = 25° 4', a = 9.5, b = 22? Round answer to two decimal places.
The measure of the angle B of the triangle is 78.15 degrees
How to determine the possible solutions from the triangleFrom the question, we have the following parameters that can be used in our computation:
A = 25 degrees
a = 9.5 units
b = 22 units
Using the law of sines, the angle B is calculated as
sin(A)/a = sin(B)/b
So, we have
sin(25)/9.5= sin(b)/22
This gives
sin(b) = 22 * sin(25)/9.5
Evaluate
sin(b) = 0.9787
Take the arc sin of both sides
b = 78.15
Hence, the measure of the angle is 78.15 degrees
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Graph with x axis labeled Quantity Demanded and numbered in hundreds, 100 to 500. Y axis is Price, with prices 0 to 6. A line representing the Demand Curve starts at 100, 5 and drops at an angle down to 500, 1. Solid lines extend upward from the x axis to the green line at points 100, 5, 200, 4, 300, 3, 400, 2, and 500, 1. Public Domain Based on the graph, how is quantity demanded related to price? (5 points) Quantity demanded decreases as price decreases. Quantity demanded is equal to the product's price. Quantity demanded decreases as price increases. Quantity demanded increases as price increases.
Based on the information, the correct information regarding the graph is that C. Quantity demanded decreases as price increase.
How to explain the graphThe graph shows that for every increase of 100 units of the goods demanded, price reduces by 1 unit.
When 500 units was demanded, the price was at 1. Therefore, if 550 units are demanded, the price will reduce by half, which means the price would drop to 0.5.
The price would drop to 0.5. In this case, the the correct information regarding the graph is that Quantity demanded decreases as price increase.
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PLEASE HELP!!!!!!!!!!!!!!!!!
Answer:
7.11\(\leq\)-7.1
Step-by-step explanation:
Answer:
Question 1- C. 7.11 > -7.1
Question 2- True
Question 3- -3 < -1 and -3 ≤ -1
Question 4- I don't know
Question 5- {3,4}
Step-by-step explanation:
I ran it through the calculator only on question 4 I didn't know the answer
-Rocketgamer360
Suppose that a technology task force is being formed to study technology awareness among instructors. Assume that 12 people will be randomly chosen to be on the committee from a group of 30 volunteers, 21 who are technically proficient and 9 who are not. We are interested in the number on the committee who are not technically proficient.
c)How many instructors do you expect on the committee who are not technically proficient? (Round your answer to the nearest whole number.)
(d)Find the probability that at least 3 on the committee are not technically proficient. (Round your answer to four decimal places.)
(e)Find the probability that at most 4 on the committee are not technically proficient. (Round your answer to four decimal places.)
The prοbability that nο mοre than fοur cοmmittee members are technοlοgically adept is 0.9851, rοunded tο fοur decimal places.
c) By dividing the tοtal number οf applicants whο are nοt technically prοficient (9) by the likelihοοd that any οne οf them wοuld be selected fοr the cοmmittee, it is pοssible tο calculate the anticipated number οf instructοrs οn the cοmmittee whο are nοt technically prοficient:
Number anticipated: 9 * (12/30) = 3.6
Tο the nearest whοle number, we estimate that there will be fοur prοfessοrs οn the cοmmittee whο lack technical prοficiency.
d) We can use the binοmial distributiοn with n=12 (the number οf trials) and p=0.3 tο determine the likelihοοd that at least three members οf the cοmmittee lack technical prοficiency (prοbability οf success, which is defined as selecting a vοlunteer whο is nοt technically prοficient). When X is the number οf technically incοmpetent prοfessοrs οn the cοmmittee, we want tο determine P(X>=3).
P(X>=3) = 1 - P(X<3)
= 1 - P(X=0) - P(X=1) - P(X=2)
\(\mathrm{=1 - (12\ choose\ 0)(0.3^0)(0.7^{12}) - (12\ choose\ 1)(0.3^{1})(0.7^{11}) - (12\ choose\ 2)(0.3^2)(0.7^{10)}}\)
\(= 1 - 0.00744 - 0.0563 - 0.1667\)
\(= 0.7696\)
The likelihοοd that at least three members οf the cοmmittee lack technical prοficiency is 0.7696, rοunded tο fοur decimal places.
e) Using the same binοmial distributiοn as in part d), we can calculate the likelihοοd that at mοst 4 members οf the cοmmittee are nοt technically adept by adding the prοbabilities fοr X=0, 1, 2, 3, and 4:
P(X<=4) = P(X=0) + P(X=1) + P(X=2) + P(X=3) + P(X=4)
\(\mathrm{= (12\ choose\ 0)(0.3^0)(0.7^{12}) + (12 \ choose\1)(0.3^1)(0.7^|{11}) + (12 \ choose\2)(0.3^2)(0.7^{10})}\\\mathrm{ + (12 \ choose\3)(0.3^3)(0.7^9) + (12 \ choose\4)(0.3^4)(0.7^8)}\)
\(= 0.9851\)
Rounding tο four decimal places, the likelihood that no more than four committee members are technοlogically savvy is 0.9851.
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3.265 rounded to the nearest tenth
Answer:
3.3
Step-by-step explanation:
Answer:
3.3
Step-by-step explanation:
Find the number in the tenth place 2 and look one place to the right for the rounding digit 6. Round up if this number is greater than or equal to 5 and round down if it less than 5.
3.3
Hope this helped!
Mark wants to order a pizza. Complete the explanation for which is the better deal. Round your answer to the nearest cent Use 3.14 for pi. Donnie's Pizza Palace Diameter (in.) 14 22 Cost (5) 10 20 The 14-inch pizza costs about Jo per square inch while the 22-inch pizza costs about per square inch. The (select) v pizza is a better deal.
Answer:
1486.14
Step-by-step explanation:
The measure of the vertex angle of an
isosceles triangle is 66°. What is the
measure of each of the base angles?
Answer:
Since an isosceles triangle has two congruent angles (the base angles), let x be the measure of each base angle. Then we know that the sum of the three angles in a triangle is 180 degrees, so:
vertex angle + base angle + base angle = 180
66 + x + x = 180
2x + 66 = 180
2x = 114
x = 57
Therefore, each base angle measures 57 degrees.
100 Points! Algebra question. Sketch the angle. Photo attached. Thank you!
The reference angle of -210 is 30 degrees and the sketch of the angle is attached
How to sketch the angle and find the reference angleFrom the question, we have the following parameters that can be used in our computation:
Angle = 210 degrees
Rewrite as
θ = 210 degrees
The above angle is in the third quadrant
So, we subtract 180 degrees from it to calculate the reference angle
Using the above as a guide, we have the following:
Reference angle = 210 - 180
Evaluate the difference
Reference angle = 30 degrees
Hence, the reference angle is 30 degrees and the sketch of the angle is added as an attachment
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how many solutions -3x+9-2x=-12-5X
Answer:
0
Step-by-step explanation:
Answer:
none!
Step-by-step explanation:
A spherically shaped hot air balloon has a
diameter of about 27 meters when fully inflated.
What is the volume of the hot air balloon when it
is fully inflated?
Answer: 7725.5775
Step-by-step explanation:
d=27
r=d/2=27/2=13.5
the volume of the spherical balloon= 3.14*r^3
= 3.14*(13.5)^3
= 7725.5775
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*50 points* Pls help. Pls answer both part A and Part B. Look at the picture for question.
Answer:
Eleanor has made an error in Step 1
She clearly intended to multiply both sides by 2, but forgot to multiply the \(-9x\) part of the RHS.
Step 1 should be: \(x+18=8(2x-6)-18x\)
Correct solution
Given: \(\dfrac12(x+18)=4(2x-6)-9x\)
Step 1: \(x+18=8(2x-6)-18x\)
Step 2: \(x+18=16x-48-18x\)
Step 3: \(x+18=-48-2x\)
Step 4: \(66=-3x\)
Step 5: \(x=-22\)
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Answer: that's crazy
Step-by-step explanation: because i said so
Answer:
now I know my ABC's, next time won't you sing with me.
Step-by-step explanation:
the song comes after the letter Z.
If 1+1 = x - 7
What is the value of X?
Answer:
1 cause its going to be one sometimes
Answer:
x = 9
Step-by-step explanation:
1+1 = x - 7
2 = x - 7
Add 7 to both sides to isolate the x:
2 + 7 = x - 7 + 7
9 = x
Hope this helps!
use the zero product to find the solutions to the equation x^2 + 12 = 7x 1. x = -4 or x =3 2. x= -4 or x= -3 3. x= -3 or x =4 4. x=3 or x=4
Given the equation :
\(x^2+12=7x\)Make all terms at one side:
\(x^2-7x+12=0\)Factor the equation :
( x - 4 ) ( x - 3 ) = 0
Using the zero product to find x
So,
x - 4 = 0 OR x - 3 = 0
x = 4 OR x = 3
so, the answer is option 4. x = 3 or x = 4
Cheesecake Factory has 5 vanilla, 10 strawberry, and 6 chocolate cheesecakes in the window for sale. What is the ratio of strawberry to total? *
Answer:
10:21
Step-by-step explanation:
emilythompson35464 hope this helps srry if it doesn't thoWhich negative angle is equivalent to a 75° angle?
Answer:
A) -285
Step-by-step explanation:
360-75=285
Solve for x round to the nearest tenth of a degree if necessary
PLEASE I NEED HELP
On solving the provided question, we can say that - sine of x = arcsin 39/74 = 31.8 degrees
What is opposite side?The hypotenuse of a right triangle is its longest side, while its "opposite" and "adjacent" sides are those that are across from and next to the same angle, respectively. For the sides of right triangles, we have unique terminology. A right triangle's hypotenuse is always the side that faces away from the right angle.
What is hypotenuse?
The hypotenuse of a right triangle is its longest side, while its "opposite" and "adjacent" sides are those that are across from and next to the same angle, respectively. For the sides of right triangles, we have unique terminology. A right triangle's hypotenuse is always the side that faces away from the right angle.
Here the sine of x = ( / (hypotenuse) = 39/74. Using a calculator with the inverse trig functions built in, we find
arcsine 39/74 = 31.8 degrees
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