Answer:
Start with 30 assembled, parts for 100 more.
Each minute results in +1/8 and -1/10
So we want
30 + x/8 - x/10 = 35
x/8 - x/10 = 5
5x - 4x = 200
x = 200 minutes
During 200 minutes, 25 are assembled, 20 are disassembled,
resulting in a net gain of 5, added to the original 30.
Bike ride:
Total distance: 40 km
Desired average speed 20 km/hr
Total time will be 2 hours
20 km at 15 km / hr = 4/3 hour taken
Leaves 2/3 hour for 20 km
20 km in 2/3 hour = 30 km/hr
Gas mileage:
Let m = city mileage
m + 3 = highway mileage
136 / (m+3) + 155 / m = 9
9m^2 - 264m - 465 = 0
m = 31 (discarding negative value)
Bricklaying:
Let b = number of bricks in wall
Lisa lays b/9 bricks per hour
Lauren lays b/10 bricks per hour
b = 5 * (b/9 + b/10 - 10)
b = 5b/9 + 5b/10 - 50
90b = 50b + 45b - 4500
b = 900
Lisa does 100 per hour
Lauren does 90 per hour
Together they do 180 per hour.
That's enough work for one Yahoo Question
The tugboat problem, in various forms I have answered before -
it has appeared many times on Yahoo Answers, sometimes with ferry boats,
sometimes with sailboats.
The ant path problem also can be found on the web in many places I am sure.
00
gassaway's avatar
gassaway
Lv 4
4 years ago
three. 80x four. 80x + a million five. 250(80x + a million) 6. 250(80x + a million) + y 7. 250(80x + a million) + 2y eight. 250(80x + a million) + 2y - 250 nine. [250(80x + a million) + 2y - 250] / two = [20000x + 250 + 2y - 250] / two = [20000x + 2y] / two = 10000x + y
00
Still have questions? Get your answers by asking now.
Ask Question
Step-by-step explanation:
Emma will have worked for 200 minutes.
Given, there are 30 assembled T works in the room initially.
A T work takes eight minutes to assemble, so the rate of assembling T work in one minute will be [tex]\frac{1}{8}[/tex].
Similarly, a T work takes 10 minutes to disassemble. so the rate of disassemble of T work will be [tex]\frac{1}{10}[/tex].
Let Emma worked for x min.
According to the question, Emma starts assembling T works as Ed begins disassembling the ones that were already made and they both continue to work until there are exactly 35 assembled T works in the room. So we can write it in equation for form as,
[tex]30+\frac{x}{8} -\frac{x}{10} =35[/tex]
[tex]\frac{x}{8} -\frac{x}{10}=5\\[/tex]
[tex]\frac{5x-4x}{40} =5[/tex]
[tex]x=5\times40[/tex]
[tex]x=200[/tex]
Hence Emma have to work for 200 minutes.
For more details follow the link:
https://brainly.com/question/11897796
Ethan was able to run a lap on the quarter mile track in 90 seconds. He wants to know how long it would take him to run a 5K race, which is 3.1 miles. 1 - How many times longer than the quarter mile is a 5K? 2 - If Ethan maintains his pace (speed) for the full distance, how long would it take him to complete the race?
Answer:
1. 13 times
2. 1170 sec = 19 min 50 sec
Step-by-step explanation:
1. 3.1 times 4 quoters = 13 times
90 sec
x 13 times
270
900
1170 sec = 19 min 50 sec
Answer:
19 min 50 sec
Step-by-step explanation:
Punch recipe Ginger Ale 40% Orange Juice 25% Pineapple juice 20% Sorbet 15% Question 1: If you have 3 cups of pineapple juice, how many total cups of punch can you make? Question 2: Elise does not like sorbet, so she omits that ingredient and adds 5 percent of each of the other ingredients. How many cups of punch will she have if she uses 6 cups of orange juice?
Answer:
Question 1: 15 cups
20% (pineapple juice) = 3 cups, 100/20=5, 5*3 = 15 cups
Question 2: 20 cups
25% (orange juice) + 5% = 30%
30% (orange juice) = 6 cups, 30/6=5%, 100/5=20
I can't explain the whole thing very clearly, but hope it helped
Who ever answers right gets the brain award.
Set the area equal to 2x , solve for x, and then multiply the value of x by 4
Hope this helps.
Pls vote brainliest. I've never been picked before.
Jessica is comparing the mass (weight) of the animals in her reptile collection. To collect the data needed, Jessica creates an apparatus to hold the reptiles in place so that she may measure their mass using a digital scale. What should Jessica do to BEST analyze her data for determining the greatest mass of reptiles?
a. graph the measurements
b. ask for opinions
c. form a hypothesis
d. reach a conclusion
its science
Answer:
a or c
Step-by-step explanation:
that's the best answer
Answer:
FORM A HIPOTHISIS THEN REACH A CONCLUSION
Step-by-step explanation:
A jar contains quarters (worth $\$0.25$ each), nickels (worth $\$0.05$ each) and pennies (worth $\$0.01$ each). The value of the quarters is $\$10.00.$ The value of the nickels is $\$10.00.$ The value of the pennies is $\$10.00.$ If Judith randomly chooses one coin from the jar, what is the probability that it is a quarter?
Answer:It doesn't make sense when I try to do it,I even tried a calculator
Step-by-step explanation: IDK?
Help i will give brainlist
Help needed here. So Please help.
Answer:
I notice in the compensation strategy it's much simpler than basic subtraction.
Step-by-step explanation:
Just say that ;)
2^-3 x 2^-4 I am really stuck on this question x=multiply
Answer:
0.0078125
Step-by-step explanation:
All you have to do is put it into you calculator but make sure to use parenthesis.Ex:( 2^-3) x(2^-4) and that will give you your answer.
I need help on these two please!
Answer:
See below
Step-by-step explanation:
Question 1:
7p + 5c = p
7p = p - 5c
6p = -5c
[tex]c = -\frac{6}{5}p[/tex]
Question 2:
y = 19x + 19b
y - 19x = 19b
[tex]b = \frac{y-19x}{19}[/tex]
Asap Please help me!!!!!
Answer:1=4,700
2=7
3=200,000,000
4=18.7
5=40,000,000
6=$9.40
Step-by-step explanation:
1=4,725.806
4,700.000
2=7.049
7.000
3=165,023,912.5
200,000,000.0
4=18.692
18.700
5=42,199,279
40,000,000
6=$9.39
$9.40
I will give brainliest PLEASE HELP
Rihanna planned a rectangular courtyard for a park and made a scale drawing using inches as the unit of measurement. She originally planned for the length of the actual courtyard to be 54 feet, but she decided to change it to 72 feet. If the length of the courtyard is 18 inches in her scale drawing, which statement about the change of scale is true?
One inch represented 1 foot in the first scale, but now 1 inch represents 4 feet in the second scale.
One inch represented 4 feet in the first scale, but now 1 inch represents 3 feet in the second scale.
One inch represented 54 feet in the first scale, but now 1 inch represents 72 feet in the second scale.
One inch represented 3 feet in the first scale, but now 1 inch now represents 4 feet in the second scale.
Answer:
scale 1-1in=3ft
scale 2-1in=4ft
Answer:
Step-by-step explanation:
I feel like its C
plzz help! bralilest asap
Answer:
C: a reflection across the y axis rotated 180 degrees
Step-by-step explanation:
The y axis is a vertical line, the same like that the trapezoid is flipped across
The trapezoid is rotated 180 degrees across the y axis
Describe two ways you could demonstrate an acceleration of 2 meters per second squared.
Please answer the question on the picture
Answer:
s = cube root 729 = 9
Therefore the side of 1 inch cube is 9.
I need help with all of these problems but 13B you can do all of them some of them or just 1
LOTS OF POINTS please answer ASAP and show your work ( I want sleep) please and thanks
The temperature went from -16°F to 7°F. What was the change in temperature? A: -9°F B: -23°F C: 9°F D: 23°F
Answer:
A
Step-by-step explanation:
-16+x=7
7-16=-9
x=-9
Answer:
B: -23 Fahrenhiet
Step-by-step explanation:
its that answer because you have to find the difference between the changes. So we do -16-7= which gives us the difference of -23.
Hope my answer helped!
Round 4,725.806 7.049 165,023,912.5 18.692
3^2 ×2^4 x3^3 x2^3 x3^2 x2^2
Answer:
3^7*2^9
Step-by-step explanation:
3^2 × 2^4 x 3^3 x 2^3 x 3^2 x 2^2= 3^7*2^9
Can someone reflect on these problems using their own words, I don't know how to describe it. (1 Paragraph or more) Instructions on how to reflect included :) (The problems are solved it's just the explaining)
Some On PLEASE help me understand!!! Find f(4). Put your final answer in function form! f(x)=3x+5 g(x) = 2x^2-4 h(x) = -3x-9
Answer:
f(4) = 17Step-by-step explanation:
Given function f(x), when you want to find f(4) you just put 4 for every x in the equation of the function.
f(x) = 3x + 5 ⇒ f(4) = 3(4) + 5 = 12 + 5 = 17
g(x) = 2x² - 4 ⇒ g(4) = 2(4)² - 4 = 2•16 - 4 = 32 - 4 = 28
h(x) = -3x - 9 ⇒ h(4) = -3(4) - 9 = -12 - 9 = -21
whats 5+5 plz answer
Answer:10
Step-by-step explanation:
The answer to 5+5 is 10.
Help please i will give alot of points
1st Page:
1. 90 and 9
2. 200 and 20
3. 500 and 50
4. 80 and 8
5. 3000 and 300
6. 9000 and 900
7. 8000 and 800
8. 60 and 6
9. 100, 10, and 1
10. 4000, 400, and 40
11. 700, 70, and 7
12. 5000, 500, and 50
13. The first six is in the 600th place and the second six is in the 60th place
14. The first four is in the 4000th place and the second four is in the 400th place
15. When the same two digits are next to each other in a multi-digit number, it doesn't mean that they are both in the same place value spot. For example, the number of 4,456 has two fours in it. But the first four is in the 4000th place and the second is in the 400th place.
16. B
2nd Page:
1. 40 and 4
2. 9000 and 900
3. The first five is in the 50th place (or the 10s place) and the second five is in the 5th place (or the 1s place)
4. The first eight is in the 8000th place (or the 1000s place) and the second eight is in the 800ths place (or the 100s place)
5. Yes, that is correct. The first seven is in the 100th place and the second seven is in the 10th place. 100 is ten times more than 10.
6. No, the only difference in the two numbers is the numbers following the two first sixes.
This took me so long pleaseeeeee give me a lot of points or the bainliest for this
Which pairs of numbers are the same distance apart as 2.9 and 3.8? Select all that apply. A 0 and 0.8 B 0 and 0.9 C 1.0 and 1.9 D 1.8 and 2.9 E 1.9 and 2.8
Answer:
subtract 2.9 from 3.8 you get 0.9
subtract 1.0 from 1.9 you get 0.9
subtract 1.9 from 2.8 you get 0.9
subtract 1.8 from 2.9 you get 01.1
I would say that your answers are E, C, and B.
Answer:
B, C, and E
Step-by-step explanation:
If you subtract 2.9 from 3.8 you get 0.9 so if u apply that to B, C, and E, you could add 0.9 to 0, 1.0, and 1.9 and get the equations:
0+0.9= 0.9
1.0+0.9= 1.9
1.9+0.9= 2.8
so as you can see it all just increases by 0.9 every time.
Simplify the equation -(m+3n-12)
Answer:
-m - 3n + 12
Step-by-step explanation:
Because we don't know the values of "m" and "n" the simplest form you can get the equation to be is -m + - 3n + 12
That is because with a negative in front of the parenthesis it's like multiplying by negative 1. So -1 x m, -1 x 3n, and -1 x -12.
An athlete's heart beats an average of 150 times per minute while running. How many times does the athlete's heart beat during a 26-mile race if the athlete runs at a pace of 5 minutes per mile?
Answer:
19500 times in 26 mile race
Step-by-step explanation:
Sketch an example where an object appears to be moving from one reference frame but stationary from another reference frame
person in a moving bus is moving compared to building and other object outside but in rest relative to bus itself
What is the speed of a rocket that travels 9000 meters in 12 seconds?
120 miles in 2 hours is a....
i think part to part
this question is 2x2 get it right if you don't you will lose
Answer: You mean "x" like times? If so 4 x)
Step-by-step explanation:
Answer:
its 4
Step-by-step explanation:
beacuse 2+2=4 or 2x2=4
PLEASE HELP ME AGAIN
Answer:
The answer to 28 is D. The answers for question 24 and more are below.
Step-by-step explanation:
24. 5 x 3/4 = 15/4
25. -2 x 8/3 - 16/3 (Multiply the numerator, cannot be divided by the denominator without being a mixed number)
26. 24/72 = 1/3 (simple multiplication and division, in this case both the numerator and denomator multiply each other)
27. 15/12 (again, simple multiplication.)
Answer:
[tex]3\frac{3}{4}[/tex] [tex]5\frac{1}{3}[/tex] [tex]\frac{1}{3}[/tex] [tex]1 \frac{1}{4}[/tex] Option A, Option B , Option CStep-by-step explanation:
Multiply
24.
[tex]5 \times \frac{3}{4} \\\\\mathrm{Convert\:element\:to\:fraction}:\quad \:5=\frac{5}{1}\\\\=\frac{5}{1}\times \frac{3}{4}\\\\\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{a}{b}\times \frac{c}{d}=\frac{a\:\times \:c}{b\:\times \:d}\\\\\frac{5}{1}\times \frac{3}{4}=\frac{5\times \:3}{1\times \:4}\\\\=\frac{15}{4}\\\\15\div 4=3 \: remainder 3 \\\\= 3\frac{3}{4}[/tex]
25.
[tex]-2 \times \frac{8}{3} \\\\\mathrm{Convert\:element\:to\:fraction}:\quad \:2=\frac{2}{1}\\=-\frac{2}{1}\times \frac{8}{3}\\\\\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{a}{b}\times \frac{c}{d}=\frac{a\:\times \:c}{b\:\times \:d}\\\\\frac{2}{1}\times \frac{8}{3}=\frac{2\times \:8}{1\times \:3}\\\\=-\frac{16}{3}\\\\16\div 3 = 5 \:remainder\: 1 \\\\5 \frac{1}{3}[/tex]
26.
[tex]\frac{1}{4} \times \frac{3}{2} \times \frac{8}{9} \\\\\frac{1}{4}\times \frac{8}{9}=\frac{2}{9}\\\\=\frac{2}{9}\times \frac{3}{2}\\\\\mathrm{Cross-cancel\:common\:factor:}\:2\\=\frac{3}{9}\\\\\mathrm{Factor\:the\:number:\:}\:9=3\times \:3\\=\frac{3}{3\times \:3}\\\\\mathrm{Cancel\:the\:common\:factor:}\:3\\= \frac{1}{3}[/tex]
27.
[tex]25\times \frac{3}{5} \times \frac{1}{12} \\\\\frac{3}{5}\times \frac{1}{12}=\frac{1}{5}\times \frac{1}{4}\\=25\times \frac{1}{5}\times \frac{1}{4}\\\\\mathrm{Convert\:element\:to\:fraction}:\quad \:25=\frac{25}{1}\\\\=\frac{25}{1}\times \frac{1}{5}\times \frac{1}{4}\\\\\frac{25}{1}\times \frac{1}{5}=\frac{5}{1}\\\\=\frac{5}{1}\times \frac{1}{4}\\\\=\frac{5\times \:1}{1\times \:4}\\\\= \frac{5}{4} \\\\5\div 4 = 1\: remainder\: 1\\\\= 1\frac{1}{4}[/tex]
28.
[tex]\frac{3}{4} \\\mathrm{Convert}\:\frac{3}{4}\:\mathrm{to\:decimal\:by\:applying\:long\:division}\\\\\mathrm{The\:solution\:for\:Long\:Division\:of}\:\frac{3}{4}\:\mathrm{is}\:0.75\\\\3 : 4 = \frac{3}{4} \\\\75\% = \frac{75}{100} \\\\Cross\: cancel \: the\:common\:factor\:25\\\\75\div 25 =3\\100 \div 25 = 4\\\\= \frac{3}{4}[/tex]