x is the days that the first team finishes the work alone (x>8)
y --------------------------second-----------------------------------------(y>8)
In a day:
The first team finishes 1/x (the work) The second team finishes 1/y (the work) Two teams working together finish 1/8 (the work)⇒ [tex]\frac{1}{x}+ \frac{1}{y} =\frac{1}{8}[/tex] (1)
If the first team works alone for two days and the second team works alone for 5 days, 5/8 of the total work still remains:
⇒ [tex]\frac{2}{x}+\frac{5}{y}=\frac{3}{8}[/tex] (2)
(1),(2) ⇒ [tex]\left \{ {{\frac{1}{x}+ \frac{1}{y} =\frac{1}{8}} \atop {\frac{2}{x}+\frac{5}{y}=\frac{3}{8}}} \right. <=>\left \{ {{x=16} \atop {y=24}} \right.[/tex]
It'll take the first team 16 days and the second team 24 days to finish the work alone
ok done. Thank to me :>
PLZZZZZ HELP ME!!!! i dont get this!
HELP
A construction company takes 1/8 hours to remove 1/2 metric tons of dirt from a construction site. What is the unit rate in metric tons per hour? Write your answer in the simplest form.
Answer:
3 1/3 metric tons per hour
Please help meeeeeeeee help help please
Answer:
27. My fiend solved the inequality correctly but graphed it incorrectly. The statement "x > 5" is correct but but since the symbol is "greater than" it should have been graphed with an open circle to the right rather than a closed circle to the right.
28. My friend is incorrect for both solving the inequality and graphing. The correct answer for solving the inequality would be "5 ≥ x ". And for graphing the correct answer would be closed circle to the right since the symbol is greater than.
Step-by-step explanation:
27. Solving the inequality
x - 7 > -2
+ 7 + 7
------- ------
0 5
answer: x > 5
Graphing the inequality
Since the symbol is greater than, it would be a open circle to the right because the the right of the number line is positives and the bigger numbers. It would be an open circle because unlike question 28 the symbol is just greater than, not greater than or equal to.
28. Solving the inequality
8 ≥ x + 3
-3 - 3
-------- --------
5 0
answer: 5 ≥ x
Graphing the inequality
Since the symbol is greater than than or equal to, it would be a closed circle to the right because the the right of the number line is positives and the bigger numbers. It would be an open circle because unlike question 27 the symbol is just greater than or equal to, not just greater than.
This might not be the right way to do it or the right answer for that matter, I am very new to solving and graphing inequalities so I just decided to give this one a shot.
Hope this helps ; )
WILL MARK BRAINLIEST PLS HELP. Fill in the table by following the rules provided for each backpack.
Answer:
See complete answer
Step-by-step explanation:
Backpack 2 is 2x, 2y, so double each number:
(0,2) = (0, 4)
(8,2) = (16, 4)
(6,5) = (12, 10)
(2,5) = (4, 10)
(0,2) = (0,4)
Backpack 3 is x + 8, y - 2 so add 8 to x and subtract 2 from y:
(0,2) = (8, 0)
(8,2) = (16, 0)
(6,5) = (14, 3)
(2,5) = (10, 3)
(0,2) = (8, 0)
Backpack 4 is x, 2y, so keep the same x and multiply y * 2
(0,2) = (0, 4)
(8,2) = (8, 4)
(6,5) = (6, 10)
(2,5) = (2, 10)
(0,2) = (0,4)
Please help.
A circle with radius 3 centimeters is cut from a square piece of felt.The sides of the felt square are 8 centimeter long. How much felt is left over? use 3.14 for π. Show your work.
Answer:
Step-by-step explanation:
The answer is 3.1372829462891
Which number line best shows how to solve -4 - (-8)?
Screen Shot Below If U Need It!
Answer:
The answer is the 3rd option
Step-by-step explanation:
As -4 -(-8)
= -4 +8
= 4
Please mark. as brainliest
Answer:
B
Step-by-step explanation:
One lower arrow is going all the way to the Four.
While |-8| = 8.
So it has it pointing to the 8. This means that 8 - -4 = 12
uhhh 6th grade work pls help
may i please get help i beg you
Answer:
Step-by-step explanation:
I need help with this question
Answer:
c
Step-by-step explanation:
Please help with these three questions! Thank you! (No links! No trolls! Will mark brainliest!)
Answer:
1. 4*10^7
2. 5.1*10^-7
3.9,842,000,000(9.842*10^9)
Answer:
im answering so you can give them brainliest!
Step-by-step explanation:
Tyler’s brother earns $14 per hour. The shoe store offers him a raise of a 5% increase per hour. After the raise, how much will Tyler’s brother make per hour?
No links please just straight forward answers
HELP PLEASE!
Which diagram represents a fraction equivalent to 40%?
Answer:
2/5. hope this helps.
Step-by-step explanation:
2/5 has a decimal of 0.4, and the percentage is 40%.
12x12/12+12x3467 How knows the answer?
Evaluate the expression when b=9 and c=4 . bc+12.3 =
Help me please I dont get it
Answer:
x>10
Step-by-step explanation:
I hope it helps. Please let me know.
Answer:
2.5x > 25
Step-by-step explanation:
1. 10 + 2.5x > 35
2. 10 + 2.5x - 10 > 35 - 10 (Subtracting 10 from both sides)
3. 2.5x +10 - 10 > 35 - 10 (Group like terms)
4. 2.5x > 35 - 10 (Simplify the arithmetic)
5. 2.5x > 25
Subtract . What is the difference in lowest terms?
One-half
Four-eighths
Three-fourths
Six-eighths
5/8 - 1/8
4/8
1/2
Hope this helps! :)
A phone company advertises a new plan in which the customer pays a fixed amount of $ 25 per month for unlimited calls in the country and $ 0.10 per minute for international calls . If a customer uses 100 international minutes , how much do they owe ?
Enter your answer in the correct monetary format. For example $20.00
Answer:
25+0.10(100)
$35.00
Answer :
$10.00
Step - by - step explanation :
First, you multiply the amount of minutes used and the cost per minute . . . what is 100 x 0.10 ? 10
What is the value of this expression
8 + 6x (10 - 4) +2
Answer:
[tex]8+6x(10-4)+2\\= 10 - 4\\= 6 + 2\\= 8 * (8 + 6x)\\ = 8 + 6x\\= 14x * 6\\= 84x\\[/tex]
Step-by-step explanation:
hope this helps.
do anyone know
-8(1+4x)+7x=-25-8x
Answer:
x = 1
Step-by-step explanation:
-8(1+4x)+7x=-25-8x (Given)
-8 + -32x + 7x = -25 - 8x (Distribute)\
-8 + -25x = -25 - 8x (Combine like terms)
-17x = -17 (Move variables(x) to the left and constants to the right)
x = 1 (Divide) (the answer is positive because when you divide a negative number by a negative number it turns positive)
What is the y-intercept of the line shown? (4 points)
a. 0
b. 1
c. 3
d. 3.5
A phone company advertises a new plan in which the customer pays a fixed amount of $ 25 per month for unlimited calls in the country and $ 0.10 per minute for international calls . If a customer paid 120 dollars , how many international minutes did they use ?
Answer: The answer would be 950 international minutes. Only if assuming that this is in one month since the question doesn't give much detail.
Step-by-step explanation:
X would be used to represent the number of months.
25+0.10x=120
0.10x=95
950 international minutes used
Answer:
950
Step-by-step explanation:
An equation to model this scenario would be: y = 0.1x + 25
y would mean the amount of money paid depending on x, which is the number of minutes.
In this problem, we know the amount of money. So we know y is 120.
We can then put 120 into the equation to find x.
120 = 0.1x +25
95 = 0.1x
x = 950
Therefore, x is 950.
question 2 please answer
The table shown reflects the change in total rainfall for the months of June, July, and August from last year to this year.
Which inequality statement correctly orders the amounts of change?
A. 1.4 > -1.25 > -1.02
B. -1.25 > -1.02 > 1.4
C. -1.02 < 1.4 < -1.25
D. -1.25 < -1.02 < 1.4
Answer:
it is c
Step-by-step explanation:
Answer:
aaaaa
Step-by-step explanation:
Help me pls it won't let me unselect the one I clicked on
Miss Riley's class has 24 students. She has the students in groups. Each group can have no more than 5 students. if every student has to be in groups how many does she have left?
Answer:
if there can be no more than 5 students, then anything less than 5 students will suffice. However we don’t want any left over ones cause we don’t want that one kid sitting alone during lunch so we can simply put 4 into each group.
Step-by-step explanation:
Hope this helped :DDD
Answer:
6 groups, 4 students in each one
Step-by-step explanation:
The factors of 24 include 6 and 4
That means that you can break 24 into those numbers
You are able to put the students up into groups of 6, with 4 students in each
However, you cannot place the students into groups of 4 (with 6 students in each) because no more than 5 students are allowed in each group
Stella models a product with algebra tiles. Write a number sentence that best describes her model. Fill in the blanks.
Answer:
555 and 777
Step-by-step explanation:
Suppose it is now 4:00 PM. What time will it be in 245 hours? Label your answer AM or PM.
Answer: 9:00 PM
Step-by-step explanation:
every 24 hours it will 4:00 PM again - so we do . . . 245 ÷ 24 = 10 days and 5 hours.
so in 245 hours it will be 9PM
Jean is x years old and jonathan is y years old how many years older is jean then jonathan. How old was jean 5 years ago
Answer:
x - y is the difference in the kids' ages
x - 5 represents Jean's age 5 years ago
Step-by-step explanation:
If Jean is older, write her age (x) before Jon's age (y): x - y. This is as far as we can go with the limited info you have shared.
Jean is x years old, so 5 years ago her age was x - 5.
What number is 10/16 of 96?
Answer:
46/69
Step-by-step explanation:
Answer:
60
Step-by-step explanation:
Minh and Mikayla are selling wrapping paper for a school fund-raiser. Customers can
buy either packages of folded paper or rolls of paper. Minh sold 6 rolls of paper and 2
packages of folded paper for a total of $44. Mikayla sold 3 rolls of paper and 9 packages
of folded paper for a total of $54. How much does each roll cost? How much does each
package of folded paper cost?
Answer:
Let x=rolls of paper,y=folded paper:
6x+2y=44
3x+9y=54
-------
6x+2y=44
6x+18y=108
16y=108-44=64
y=4
x=6
Thus, a roll of paper cost $6,folded paper was $4 each
Step-by-step explanation: