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Disregarding the force of gravity, the maximum velocity v of a rocket is given by v = t ln M, where t is the velocity of the exhaust and M is the ratio of the mass of the rocket with fuel to its mass without fuel. A solid propellant rocket has an exhaust velocity of 2.5 kilometers per second. Find its mass ratio M.
Answers
Answer:
look at the photo
Step-by-step explanation:
Disregarding the force of gravity, the maximum velocity v of a rocket is given by v = t ln M, where t is the velocity of the exhaust and M is the ratio of the mass of the rocket with fuel to its mass without fuel. A solid propellant rocket has an exhaust velocity of 2.5 kilometers per second. Find its mass ratio M.
7.5 = 2.5 ln Mln M = 3m = e^3 = 20.08553692Hope it will help you
Related Questions
Students at a local university have the option of taking freshman seminars during their first year in college. A survey of the freshmen revealed the following: Among the social science majors, 50% chose to take a freshman seminar; among the humanities majors, 65% chose to take a freshman seminar; and among the physical science majors, it was 30% . Freshmen make up 32% of undergraduates. The probability of taking a freshman seminar, if a student is a science major, is:
Answers
complete question
the probability of taking a freshman seminar, if a student is a science major, is:
a) a total probability.
b) a conditional probability.
c) a complete probability.
d) a joint probability.
Answer:
B. Conditional probability
Step-by-step explanation:
In this given question, what we ant to do is to find the probability thst a student who is a science major is taking a freshman seminar. This clearly a case of conditional probability.
In a conditional probability, we are trying to find out the probability of an event occurring given that another event has already occurred. since the student is a science major, the probability of the student taking a freshman seminar is to be determined.
how old is the ressinace ?
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Answer:
The renaissance took place in the 14th all the way to the 17th century.
Step-by-step explanation:
Valentina is choosing cutlery with which to eat dinner. There are 2 knives and 10 forks to
choose from. How many different cutlery sets can Valentina choose?
cutlery sets
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Answer:
it would be able to make 20 different sets. not at the same time though. you would only be able to make 2 at one time
For accounting purposes, the value of assets (land, buildings, equipment) in a business are depreciated at a set rate per year. The value, V(t) of $537,000 worth of assets after t years, that depreciate at 17% per year, is given by the formula V(t) = Vo(b)t. What is the value of Vo and b, and when rounded to the nearest cent, what are the assets valued at after 9 years?
a
Vo = $537,000, b = 0.17, and the value after 9 years is $0.45
b
Vo = $537,000, b = 0.83, and the value after 9 years is $100,386.92
c
Vo = $537,000, b = 1.17, and the value after 9 years is $98,291.76
d
Vo = $537,000, b = 0.83, and the value after 9 years is $91,290.00
Answers
Answer:
I think it is D
Step-by-step explanation:
Can someone help me out
Answers
Answer:
1. 29. Solve for the variable and graph the solution on a number line: –2x < –10 30. Solve for the variable and graph the solution on a number line: 9 + c > –2 31. Solve for the variable and graph the solution
2. v – 4 ≥ 3 (6 + 2v
3. The last term, "the constant", is -5 Step-1 : Multiply the coefficient of the first term by the constant 4 • -5 = -20 Step-2 : Find two factors of -20 whose sum equals the coefficient of the middle term, which is -8
4.The first term is, 4p 2 its coefficient is 4 . The middle term is, -8p its coefficient is -8 . The last term, "the constant", is -5 Step-1 : Multiply the coefficient of the first term by the constant 4 • -5 = -20
Step-by-step explanation:
the rest is up to you, and u better say thanks and give me brainliest this took ages to explain
What value of k makes the following equation true? k + 6 = 18 A) 13 B) 10 C) 12 D) 11
Answers
Answer:
C
Step-by-step explanation:
We replace k with 12
12 + 6 = 18
This it's true
Thus, the answer is C
If f(x)=-4x-5 and g(x)= 3-x, what is g(-4) +f(1)?
A.-10
B.7
C.-9
D.-2
Answers
Answer:
-2
Step-by-step explanation:
sustitue -4 into x for 3-x which would equal 7 because a negative times a negative equals positive. Then substitue 1 in for x in -4x-5 which would get you -9
give brainliest pls
PLEASE HELP, EXPLAIN HOW YOU GOT YOUR ANSWER AFTER PLEASE .
Answers
Answer:
Area = 288 m²
Step-by-step explanation:
The area of the shape given = area of the square + area of the triangle
= (side length)² + ½*base*height
side length = 16 m
base = 16 - 8 = 8 m
height = 8 m
Plug in the values into the equation
Area = 16² + ½(8)(8)
Area = 256 + 32
Area = 288 m²
use the equation y=7x to complete the table what are the missing values
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Answer:
your answer is correct
Step-by-step explanation:
7(2) = 14
7(4) = 28
Find the slope of the line.
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Answer:
line is negative, so -3/4
Step-by-step explanation:
PLEASE HELP ME FAST I NEED HELP PLEASE
HELP FAST I WILL GIVE BRAINLIEST
Answers
Answer:
1, 2, 7 8
Step-by-step explanation:
1 is the smallest number, 2 is the lower quartile range, 7 is the upper quartile range, and 8 is the largest number
Jose rode his bike for 18 miles in one hour.
Which graph best represents y, the number of
miles a Jose can travel in x hours?
Thors
Distance
Need H
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can someone help me solve this equation? will give brainliest
Answers
Answer:
x=20
Step-by-step explanation:
Answer:
x = 20
Step-by-step explanation:
Add 47 to both sides of the equation:
4 = x/5
Multiply both sides of the equation by 5:
x = 20
What should Jayce conclude is the distance around the largest circle on the radar screen? Use pi = 3.14.
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Step-by-step explanation:
plz mark as brainlist////
2. According to the law of supply, if the price of a good or service increases:
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Answer:
There is a negative relationship between the price of a good or service and the quantity producers will supply.
Step-by-step explanation:
please help me!
Please explain it
Answers
Answer:
1,416 cm²Step-by-step explanation:
There are various lines dividing this figure into shapes, such as rectangles and triangles; this makes it easier to find the area.
To find the area of a triangle, multiply the base and the height, then multiply the product by 1/2.To find the area of a rectangle, multiply the width by the length.First, find the area of the triangles.
In this figure, there are two triangles with heights of 12 and bases of 18.
[tex]12 * 18 = 216[/tex]
Then, multiply the product by 1/2.
[tex]216 * 1/2 = 108[/tex]
There are two triangles, so multiply, the product, 108, by 2.
[tex]108*2 = 216[/tex]
The area of both combined triangles is 216 cm; the area of a single triangle is 108 cm.
Secondly, find the area of the rectangles.
There are two rectangles with widths of 25 and lengths of 15.
[tex]25*15 = 375[/tex]
There are two rectangles, so multiply the product, 375, by 2.
[tex]375*2 = 750[/tex]
The area of both rectangles combined is 750 cm; the area of a single rectangle is 375 cm.
Lastly, we find the area of the rectangle in the middle.
This rectangle has a length of 18 and a width of 25.
18[tex]18*25 = 450[/tex]
The area of this rectangle is 450 cm.
Lastly, add the areas of all the shapes.
[tex]108 + 108 + 375 + 375 + 450 = 1,416.[/tex]
Therefore, the area of this figure is 1,416 cm².
A study was conducted to see if students from public high schools were more likely to attend public colleges compared to students from private high schools. Of a random sample of 100 students from public high schools, 60 were planning to attend a public college. Of a random sample of 100 students from private high schools, 50 of them planned to attend a public college. The 90% confidence interval for the difference between the proportion of students planning to attend public college between students at public versus private high schools is (-0.0152, 0.2152). Select the correct interpretation of this confidence interval.
a. Reject the null hypothesis
b. Fail to reject the alternative hypothesis
c. Accept the null hypothesis
d. Fail to reject the null hypothesis
Answers
Answer:
B
Step-by-step explanation:
We are 90% confident the proportion of students planning to attend public colleges who attended public high schools is between 0.0152 lower than to 0.2152 higher than the proportion of students planning to attend public colleges who attended private high schools.
In a class, 40% of the students are girls. Of the girls in the class, 25% play tennis. There are 40 students in the class. How many girls in this class, play tennis?
a- 10
b- 16
c- 4
d- 24
Answers
Answer:
Let x=number of girls in the class
Then x+27 =total number of students in the class
So our equation to solve is :
40% of (x+27)=x or
0.40(x+27)=x get rid of parens
0.40x+10.8=x subtract 0.40x from each side
0.40x-0.40x+10.8=x-0.40x collect like terms
Step-by-step explanation:
Which mixed number is equivalent to the improper fraction?
41/4
A. 10 1/4
B. 3 11/10
C. 9 5/4
D. 4 1/10
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There are 120 students and 10 teachers at a small private school. To keep the same
student to teacher ratio, how many teachers are needed for 240 students?
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Answer:
20
Step-by-step explanation:
You are part of a school and have to report the results of standardized test scores. Which measure of central tendency would you use? Assume that you don't know how your students will perform; consider the general effects of outliers on the three measures of central tendency. Research and summarize the general effects that outliers have on each of the measures of central tendency. Then, using some real values, provide an example of how the three measures of central tendency vary due to outlier effects.
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In parallelogram ABCD, the measure of angle B is 107°.
(a) What is the measure of d
(b) What is the measure of a
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A= 73
here you go
Unit test Which of the x-values are solutions to the following inequality? 2 > 111
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Answer: C
Step-by-step explanation: It is C because X is greater than (>) 111, and 119 is greater than 111. Good luck on the test!
Can y’all help me on question 12?!
Answers
Answer:
C)
Step-by-step explanation:
5 x 3 = 15
15 + 6 = 21
Your answear is C
Answer:
C,D, and F should be the correct answers.
Step-by-step explanation:
C. 5(3)= 15+6=21
D. 7(3)= 21-2=19
F. 5(3)=15
Find the surface area of the rectangular prism
Answers
Answer:
200 is your answer
Step-by-step explanation:
First, multiply:
8 × 5 × 4 = 160
Then, multiply:
4 × 5 × 2 = 40
Next, add them up.
160 + 40 = 200
Lastly, have a great day!
Solve for h. Please show work.
Answers
Answer: 3.75 ft
Step-by-step explanation:
30/8=3.75
So since area is A= L*W
8*3.75=30 ft2
2x +3=5 so what is the value of x
Answers
Answer:
x = 1
Step-by-step explanation:
2x + 3 = 5
=> 2x = 5-3
=> 2x = 2
=> x = 2/2
=> x = 1
Therefore, the value of x is 1
Hope it helps :)
Answer:
x=1
Step-by-step explanation:
Hi there!
2x+3=5
Our goal is to isolate x on one side of the equal sign, and we can do this using inverse operations. For example, the inverse operation of addition is subtraction. Subtract both sides of the equation by 3 to isolate 2x:
2x+3-3=5-3
2x=2
The inverse of multiplication is division. Divide both sides by 2:
2x÷2=2÷2
x=1
I hope this helps!
Pls help!! I need this asappp!
Answers
∠BCD = 45°
Because,∠EDF is right angle which is 90°, its half will be of 45°. Possibly, the value of ∠CBD is given just to create confusion.
What is the value of x?
Answers
9514 1404 393
Answer:
54
Step-by-step explanation:
The external angle is half the difference of the subtended arcs.
x° = (136° -28°)/2 = 108°/2
x = 54
help I have one hour left please
Answers
Answer:
At 8:45
He was at 90
He then went 20 kilo meters.
So,your final answer is 20 kilometers.
Step-by-step explanation: