Answer:
3.08 hours
Step-by-step explanation:
Preparation for the homecoming football game, members of the student body are painting the spirit rock in front of the school.
If Angela works alone, it will take her five and a half hours.
If Brandon works alone, it will take him 7 hours. If they work together, it will take them approximately hours ?
This is calculated as:
The Number of hours they worked together = T
1/5.5 + 1/7 = 1/T
= 7 + 5.5/(5.5)(7)
= 12.5/38.5
1/T = 12.5/38.5
Cross Multiply
12.5T = 38.5
T = 38.5/12.5
T = 3.08 hours
The time required when Angela and Brandon work together, for the preparation for the homecoming football game, is 3.08 hours.
What is the relation between work and time?The total time taken is inversely proportional to the rate of work. If a unit of work is done in total n number of days, then the total work done in a day can is,
[tex]W_1=\dfrac{1}{n}[/tex]
In preparation for the homecoming football game, members of the student body are painting the spirit rock in front of the school.
If Angela works alone, it will take her five and a half hours. The work done by Angela in one hour is,
[tex]A=\dfrac{1}{5.5}\\A=\dfrac{2}{11}[/tex]
If Brandon works alone, it will take him 7 hours. The work done by Brandon in one hour is,
[tex]B=\dfrac{1}{7}[/tex]
The work done in one hour, when the work together,
[tex]A+B=\dfrac{2}{11}+\dfrac{1}{7}\\A+B=\dfrac{14+11}{77}\\A+B=\dfrac{25}{77}\\A+B=\dfrac{1}{3.08}[/tex]
Thus, the time required when Angela and Brandon work together, for the preparation for the homecoming football game, is 3.08 hours.
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Determine the value of x that would make quadrilateral LMNO a parallelogram.
3
9
11
18
Answer:
9
Step-by-step explanation:
Solve for r 4/r 5/7
There are approximately 750 students enrolled in a new school, which is already at full capacity.
The school's management board plans to add an addition to house 500 more students. If the
school population grows at 6.4% per year, in how many years will the new addition be full?
Answer:
8000
Step-by-step explanation: 700 + 500 = 1,200
1,200 x 6.40 = 8000
Evaluate the expression x + 9 when
x = 10
can someone help me plss
Answer:
the third is correct
Step-by-step explanation:
Choose Yes or No to tell whether the symbol will be reversed when the variable is isolated in each inequality?
Answer:
I am sorry but i need more information to anwser this question. I need to be able to see the symbol in order to help you. Have a great day! I hope you got them right!
Answer:
no :)
Step-by-step explanation:
Put these numbers in order from least to greatest: -4 2/5 -4.5 -5.1 -4.45 -5 -
Answer:
-5.1, -5, -4.5, -4.45,-4 2/5
Answer:
-5.1, -5, -4.5,-4.45,-4 2/5,
Step-by-step explanation:
Lets put all the number in decimal form from least to greatest.
-4 2/5= -4.4
Remember the lower the negative integer is, the higher it is on the number line.
-5.1, -5, -4.5, -4.45, -4 2/5,
heat can be produced by - two things
Ann had $120 to spend on books. After buying 10 books she had $8.30 left. If each book costs the same, let b be the cost of each book Write an algebraic equation that represents the situation:
Answer:
11.17
120-8.30 an then ÷10
Answer:
120 - (10b) = $8.30
Step-by-step explanation:
solve for x for the triangle
Step-by-step explanation:
90° + 2x-2 + x+5 = 180° [Angle sum property of triangle]
=> 90 + 2x + x - 2 + 5 = 180°
=> 3x + 93 = 180
=> 3x = 180 - 93
=> 3x = 87
[tex] = > x = \frac{87}{3} [/tex]
=> x = 29 (Ans)
richard klein works as auto mechanic and earns the following commission rates 3.00 percent for oil changes 5.00 percent for tune ups and 6.25 percent on auto parts sales he is guaranteed a minimum salary of $2,450.00 per month last month he brought in $2,500.00 in oil changes $4,500.00 in tune ups and sold $28,200.00 in parts what is his gross pay for the month
Answer:
His gross pay for the month is $4,509.50
Step-by-step explanation:
The commission Richard Klein earns for oil change = 3.00%
The commission he earns for tune ups = 5.00%
The commission he earns for auto parts sales = 6.25%
The minimum salary he is guaranteed = $2,450.00
The amount he brought in last month includes;
1) $2,500.00 in oil changes
2) $4,500 in tune ups
3) Sold $28,200.00 in parts
The amount he earns last month in commission are;
3/100 × 2,500 = 75 in oil changes
5/100 × 4,500 = 225 in tune ups
6.25/100 × 28,200 = 1762.5 in parts sold
The total commission = 72 + 225 + 1762.5 = 2,059.5
∴ The total commission = $2,059.5
The amount he makes as salary = $2,450.00
Richard Klein's gross pay for the month = His total pay for the month
Therefore;
Richard Klein's gross pay for the month = $2,059.5 + $2,450 = $4,509.5
GEOMETRY! I will give brainliest
Answer:
538.8 (4th option)
Step-by-step explanation:
Area of Circle= 3.14(pi) x r^2
Area=615.44
Sector Area = 315/360 x 615.44 = 538
What’s the additive inverse of -7x + 3 ?? ! please help it’s due at 11:59 and I have waaay more !
Answer:
7x-3
Step-by-step explanation:
The additive inverse is when you add the number with the inverse to get 0.
4
3.
A factory can produce 720 wagons in an 8-hour
day. What is the unit rate per hour?
sle
B.
Answer:
9
Step-by-step explanation:
Answer:
90
Step-by-step explanation:
i think its 90 because if 720 could be produced in 8 hours then 90 are being produced each hour
two horses are filling a pool
Answer:
What is the actual question?
Step-by-step explanation:
A can vegetables has radius 1.8 inches in height 5.7 inches find the volume of the can use 3.14 for Pi
Answer:
about 58
Step-by-step explanation:
WILL GIVE BRAINLIEST
Answer:
V=πr²h
V=(3.14)(15cm)²(325cm)
V=229,613 cm³
Answer:
d
Step-by-step explanation:
trust me i used online calculator and got that exact answer
pls make me brainliest :)
On a particular flight, the airline's income was $95,280 for a jumbo jet carrying 290 passengers. If a first-class ticket costs $680 and a coach ticket costs $288, how many of each ticket were sold for the flight?
Answer:
30 first-class tickets were sold and 260 coach tickets were sold.
Step-by-step explanation:
Let a first-class ticket be represented by f and let a coach ticket be represented by c.
On a particular flight, a jumbo jet was carrying 290 passengers. So, the sum of the first-class tickets and coach tickets must sum to 290:
[tex]f+c=290[/tex]
The total income was $95,280. Therefore:
[tex]680f+288c=95280[/tex]
We can now solve the system of equations. First, we can simplify the second equation by dividing everything by 8:
[tex]85f+36c=11910[/tex]
From the first equation, we can subtract f from both sides:
[tex]c=290-f[/tex]
Substitute:
[tex]85f+36(290-f)=11910[/tex]
Distribute:
[tex]85f+10440-36f=11910[/tex]
Simplify:
[tex]49f=1470[/tex]
So:
[tex]f=30[/tex]
From the previous equation:
[tex]c=290-f[/tex]
Substitute:
[tex]c=290-30=260[/tex]
30 first-class tickets were sold and 260 coach tickets were sold.
very urgent can someone please solve thank you
Answer:
RP= 15.3 km (3 s.f.)
Step-by-step explanation:
Please see the attached pictures for the full solution.
A package of mixed lettuce seeds contains 150 green lettuce seeds and 50 red lettuce seeds. What is the probability that a randomly selected seed will be a red lettuce seed? Write your answer as a percent.
Answer:
25%
Step-by-step explanation:
I used relative frequency approach
n(total number of seeds)= 150+50=200.
probability (selecting a red lettuce) = red lettuce divided by the total number of seeds.
probability (selecting red lettuce) = 50/200 = 0.25
in percentage, probability = 0.25*100= 25%✓
A company makes 150 bags.
43 of the bags have buttons but no zips.
38 of the bags have zips but no buttons.
34 of the bags have neither zips nor buttons.
A bag is selected at random.
What is the probability that the bag has buttons?
If 3^2x+1=3^x+5What is the value of X. 2,3,4,6
Please hurry
Answer:
4
Step-by-step explanation:
Hope it helps out!
which number line represents the solution to the inequality (will make brainliest) pls help
Answer:
C
Step-by-step explanation:
because the solution dors not include -3 but everything less than.
Square the binomial below:
(x– 4)
Answer:
x^2-8x+16
Step-by-step explanation:
(x-4)^2
x^2-4x-4x+16
x^2-8x+16
PLEASE HELP!!!!! Which graph represents the solution to this set of inequalities?
TYSM! :)
(A,B,C,or D??)
Answer:
a is the answer
Step-by-step explanation:
.......................
If a watch costs $40 and you must pay 6.5 % sales tax, how much will you pay in TAX?
Answer: 2.6
Step-by-step explanation:
Our buyer client Heather just signed a purchase agreement for a $520,000 home. The LTVR is 60%. How much is Heather putting down on the purchase?
find out the total volume of cube _Edge Length =6 inches
Given:
The edge length of a cube = 6 inches
To find:
The volume of the cube.
Solution:
We know that, the volume of a cube is
[tex]V=a^3[/tex] ...(i)
Where, a is the edge length.
Substituting a=6 in (i), we get
[tex]V=(6)^3[/tex]
[tex]V=216[/tex]
Therefore, the total volume of the cube is 216 cubic inches.
What is the measure of the missing angle?
Answer:
28 degrees
Step-by-step explanation:
85 + 67 = 152
180 - 152 = 28
Answer:
X = 28
Step-by-step explanation:
85
+67
=152
180
-152
=28
If 20 yards of carpet weighs 30 pounds, how much do 34 yards weigh in pounds?
PEOPLE!!!!! I NEED HELP! I HAVE AN EXAM COMING IN 2 DAYS!! PLEASE HELP!
Answer:
20/30=x/34
2/3=x/34
3x=2×34
3x=68
x=68/3
x=22.67pounds...
34 yards of carpet weighs 51 pounds.
What is the unitary method?The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.
Given that, 20 yards of carpet weighs 30 pounds.
Here, 1 yard of carpet weighs = 30/20
= 1.5 pounds
34 yards of carpet weighs
= 34×1.5
= 51 pounds
Therefore, 34 yards of carpet weighs 51 pounds.
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