Answer:
6,6
Step-by-step explanation:
a
Answer:
it´s freaking 4
Step-by-step explanation:
Two large and 1 small pump can fill a swimming pool in 4 hours. One large and 3 small pumps can also fill the same swimming pool in 4 hours. How many hours will it take 4 large and 4 small pumps to fill the swimming pool? Please help me answer I'm in 5th grade and this is so hard.
Answer:
Let's define.
L = rate at which the large pump fills the pool.
S = rate at which the small pump can fill the pool.
We have two relations:
"Two large and 1 small pump can fill a swimming pool in 4 hours."
(2*L + S)*4h = 1
"One large and 3 small pumps can also fill the same swimming pool in 4 hours."
(L + 3*S)4h = 1
Then we have the system of equations:
(2*L + S)*4h = 1
(L + 3*S)4h = 1
To solve this system, we need to isolate one of the variables in one of the equations, i will isolate S in the first equation:
S = 1/4h - 2*L
Now we can replace that in the second equation:
(L + 3*(1/4h - 2*L))4h = 1
L + (3/4h) - 6*L = 1/4h
-5*L = 1/4h - 3/4h = -2/4h
L = (2/4h)*(1/5) = (2/20h) = 1/10h
This means that one large pump needs 10 hours to fill one pool.
With this, we can find the value of S:
S = 1/4h - 2*L = 1/4h - 2/10h = 5/20h - 4/20h = 1/20h
This means that a small pump needs 20 hours to fill a pool.
Now we can answer:
How many hours will it take 4 large and 4 small pumps to fill the swimming pool?
We need to solve the equation:
(4*(1/10h) + 4*(1/20h))*T = 1
We need to find the value of T.
T = 1/((4*(1/10h) + 4*(1/20h)) = 1.67 hours.
This means that 4 large and 4 small pumps need 1.67 hours to fill a pool.
I need help my teacher didn’t even explain how to do this
Answer:its b
first off its a straight line ill give it that but its not going through the origin is think its b
hoped this helped lmk if it did
what is the value of f(x),if x is -8?
Helpppp I’ll give you a star
Answer:
b
Step-by-step explanation:
b
14.Y = Mx + b. Identify the slope and the y intercept.
-help meh
Answer:
y=mx+b is slope intercept form
In slope intercept form, m represents the slope, b represents the y-intercept and x and y represent the values of x and y on a graph.
Therefore, the slope is m and the y-intercept is b
Step-by-step explanation:
URGENT‼
The Utica Boilermaker is a 15-kilometer road race. Sara is signed up to run this race and has done the following training runs:
I. 10 yards
II. 44,880 feet
III. 15,560 yards
Which run(s) are at least 15 kilometers?
Option A: I, only
Option B: II, only
Option C: I and III
Option D: II and III
The values of following are 10 yards = 0.009144 km, 44,880 feet = 13.678, 15,560 yards = 14.228
What is kilometer ?"The kilometer spelt kilometer in American English, is a unit of length in the metric system, equal to one thousand meters (kilo- being the SI prefix for 1000). It is now the measurement unit used for expressing distances between geographical places on land in most of the world; notable exceptions are the United States and the United Kingdom where the statute mile is the unit used."
Given,
(i) 10 yards
1 yard = 0.0009144
then 10 yard = 10*0.0009144 = 0.009144 km
(ii) 44,880 feet
1 feet = 0.00030478
then 44,880 feet = 44,880*0.00030478 = 13.678 km
(iii) 15,560 yards
15,560 yards = 15,560 *0.0009144 = 14.228 km
Hence, D is the correct option.
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i just wanted to make sure my answers are correct could someone tell me if they are or not correct or tell me which ones are wrong?
14. Is B
16. Is B
correct
Write the prime factorization of 42. Use exponents when appropriate and order the factors from least to greatest (for example, 22
Answer:
2 * 3 * 7 = 42
Step-by-step explanation:
2,3 and 7 are prime numbers
help whats 18+37+24??
Answer:
79 that the answer.........
Answer:
its 79
Step-by-step explanation:
it was easy :)
Thanks for easy question
can someone please help me!!
Answer:
The probability is
Step-by-step explanation:
11%
Help me please due 10 minutes
Answer:
c
Step-by-step explanation:
Answer:
c
Step-by-step explanation:
what is the percent decrease from 9,000 to 0
Answer:
-100%
Step-by-step explanation:
Answer:
-100
Step-by-step explanation:
I got u bro
what is 60 divided by 95 (or is it the other way around?)
Answer:
it would be 95 divided by 60
Step-by-step explanation:
but the answer to that is 1.5833333333333333333
best rapper????????????
Answer:
easy uzi tay k or sofaygo
Step-by-step explanation:
i'm vry tired and just want to go to bed ill give brainliest pls answer
A rectangular prism has a length of 4 feet, a width of 3 feet, and a height of 5 feet. What is the surface area of the rectangular prism?
A. 64 square feet
B. 79 square feet
C. 120 sqaure feet
D. 158 square feet
Answer:the answer is D 158
Step-by-step explanation:Pls mark me brainliest!
The critical points of a rational inequality are -1, 3, and 4. Which set of points can be tested to find a complete
solution to the inequality?
x= 1 and x = 3.5
x= -1, x= 3, and x = 4
O x = -2, x = 2, and x = 5
O x= -3, x= 1, x= 3.5, and x = 5
Nexty
Save and Exit
Submit
Mark this and return
Answer:
It's D I got it right
Step-by-step explanation:
I know
Answer:
D
Step-by-step explanation:
x = –3, x = 1, x = 3.5, and x = 5
can someone help! with this please.
SOMEBODY PLS HELP ILL MARK U BRAINLIEST
Answer:
- 16x + 3y
Step-by-step explanation:
this can be done in two ways- vertical method or horizontal :
I did one:
( i hope this is right)
HELPP PLEASEE!!
three times the sum of a number and 9 is 8
use the variable W for the unknown number
Can some one help me.
u need to find out 3/4 divided by what = 3/24
Your parents take your family out to dinner on a Wednesday night when they have a 15% off coupon. Your parents wanted to give the waiter a 18% tip for doing a great job. If the total amount of the dinner was $42.00, how much tip money should the waiter get? What is the new total? **Tip is given before the discount**
Answer:
a. Tip is before the discount so the waiter will get;
= 42 * 18%
= $7.56
b. New total;
Coupon of 15% off applies;
= 42 * (1 - 15%)
= $35.70
Add the tip;
= 35.70 + 7.56
= $43.26
Please help due right now
Answer:
Tree C was the tallest when planted.
Step-by-step explanation:
If you look at the graph you'll see that the height at 0 months is 10 inches.
What have you liked and disliked about being virtual this school year? Do you plan to be virtual next semester? can someone whrite summary i lost my dog we are trying to find n i need to dis homework i can not come up with something i am really sad i will you brainlsist thank you
To be honest I have not liked anything about being online at school, I hope to return soon (but I am a little scared because I am new to school and I have no friends: c) If the next semester they open I plan to go to schools, but if they don't open, then I'll stay online. I hope they find your pet soon! I don't know you but I love you very much!
Answer:
I don't like not being able to see my friends and miss seeing my teachers and don't do as well. I also struggle when i cant be face to face with a teacher so I can get help. I liked not having to wear a mask and chill at home in my pajamas. I also do not plan to be virtual next semester.
Step-by-step explanation:
Pls give me brainliest
An architect is making a scale model of a house. On the model 2.5 inches represents
5 yards. Which graph represents the same relationship?
Answer:
The answer is A.
Step-by-step explanation:
h*es on me left and..
Answer:
gl*ck 9 put em out like a light
Step-by-step explanation:
Coupe tinted like a thief in the night
Diego made 6 boxes of spaghetti to feed the 20 people who attended his dinner party.
Next time, 50 people are coming! How many boxes of spaghetti should Diego buy to feed all those people?
Diego needs to buy ? boxes of spaghetti.
Answer:
15 boxes!
Step-by-step explanation:
Hope this helps!
The number of boxes of spaghetti required to feed 50 people will be equal to 15 boxes.
What is the ratio?The ratio notion is used in mathematics when evaluating two or more numbers. It works as a comparison tool to demonstrate how big or small a particular number is.
A ratio divides two quantities to compare them.
As per the given information in the question,
Total number of people who attended the party first time = 20
Number of spaghetti boxes required to feed 20 people = 6
Let the number of boxes required to feed 50 people be x.
So, the ratio will be,
6 boxes = 20 people
x boxes = 50 people
Perform cross-multiplication,
20x = 50 × 6
x = (50 × 6)/20
x = 5 × 3
x = 15 boxes.
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What is the solution of the system of equations {6y=−4x−2 2y=−2x−4?}
in an ordered pair
Answer:
Step-by-step explanation:
2y=−2x−4
6y=−4x−2
Multiply first equation with -2
-4y=4x+8
6y=-4x-2
2y=6
Y=3
Substitute value of y in equation 2
6y=−4x−2
6*3=-4*x-2
18=-4x-2
20=-4x
X=-5
(-5,3)
6x-(2x-9)=-31 whats x?
Answer: [tex]x = -10[/tex]
Step-by-step explanation:
Hey there! I hope these steps will help you accomplish this problem :)
Step 1: Remove the parentheses.
[tex]6x - 2x + 9 = -31[/tex]
Step 2: Simplify.
[tex]6x - 2x + 9[/tex] to [tex]4x + 9[/tex].
[tex]4x + 9 = -31[/tex]
Step 3: Subtract 9 from both of the sides.
[tex]4x = -31 - 9[/tex]
Step 4: Simplify.
[tex]-31 - 9[/tex] to [tex]-40[/tex].
[tex]4x = -40[/tex]
Step 5: Divide both of the sides by 4.
[tex]x = -\frac{40}{4}[/tex]
Step 6: Simplify.
[tex]\frac{40}{4}[/tex] to [tex]10[/tex].
[tex]x = -10[/tex]
Answer:
Step-by-step explanation:
Here you go mate
step 1
6x-(2x-9)=-31 equation
step 2
6x-(2x-9)=-31 simplify
6x+-1(2x-9)=-31
step 3
6x+(-1)(2x-9)=-31 distribute
6x+-1(2x)+(-1)(-9)=-31
6x+-2x+9=-31
step 4
(6x+-2x)+(9)=-31 combine the terms that are alike
4x+9=-31
step 5
4x+9(-9)=−31(-9) subtract-9
4x=-40
step 6
4x/4=-40/4 divide by 4 because 4 is a number that can make the division easier
answer
x=-10
There were some people on a train.
18 people get off the train at the first stop and 21 people get on the train.
Now there are 65 people on the train.
How many people were on the train to begin with?
Answer:
62
Step-by-step explanation:
let there be X people in the beginning
so
X-18+21=65
X+3=65
X=65-3
X=62