Answer:
47
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 ?
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.
Learn more about the work and time here;
https://brainly.com/question/25572872
PLS HELP! I WILL GIVE BRAINLIEST TO BEST ANSWER! Just number 2. Pls exlpain your work. Doesn't have to be like an essay, just enough so I know that you know it's the right answer. TYSM!
PS: You may have to rotate the picture to read it.
Answer:
D
Step-by-step explanation:
If you solve you will find out that its D
60 degrees 30 degrees 72 degrees 46 83 97 215 457
solve the inequality -d ≥ 0.5
Answer:
d ≤ -0.5
Step-by-step explanation:
Multiply each term by -1
In an endurance race, Alyson rode her bicycle 7 miles less than Jeff. Together they rode 39 miles. How far did Alyson ride?
Answer:
Distance cover by Alyson = 16 miles
Step-by-step explanation:
Given:
Distance cover together = 39 miles
Assume;
Distance cover by Jeff = a
Distance cover by Alyson = a - 7
Find:
Distance cover by Alyson
Computation:
a + (a - 7) = 39
2a - 7 = 39
2a = 46
a = 23
Distance cover by Alyson = a - 7
Distance cover by Alyson = 23 - 7
Distance cover by Alyson = 16 miles
PLS HELP a parabola has the equation y = 4x^2 + bx -2 and the equation for the axis of symmetry is x = -1.
Answer:
Step-by-step explanation:
Remark
Unless you know calculus, the only way to solve this is by completing the square.
Solution
y = 4x^2 + bx - 2
y = 4(x^2 + b/4 ) - 2
y = 4(x^2 + b/4 + (1/2b/4)^2 ) - 2 - 4*(b/8)^2
y = 4(x^2 + b/4 + (b/8)^2 ) - 2 - b^2/16
y = 4(x + b/8)^2 - 2 - b^2/16
Now what you want to happen is to give b/8 a value of 1 so that when x is put in -1 you get 0 for what is inside the brackets.
b/8 = 1
b = 8
y = 4(x + 1)^2 - 2 - (8)^2 / 16
y = 4(x + 2)^2 - 2 - 4
y = 4(x + 1)^2 - 6
The vertex is at (-1, - 6)
The axis of symmetry is x = - 1
Note
This could have been done a lot shorter just by realizing that the number inside the brackets had to be + 1 as in (x + 1). But then you would not have been able to know the minimum value for y which is - 6
which of the following is NOT equivalent to 36%
Answer:
Wait, what are you talking about?
Answer:
Is there any options for your question?
Step-by-step explanation:
What is an equivalent ratio to 5:10?
Answer:
1:2
Step-by-step explanation:
Its just like fractions
You can simplify it.
Leon has $50 in a savings account that earns 10% interest, compounded annually. To the nearest cent, how much interest will he earn in 2 years?
Answer:
$10.50
Step-by-step explanation:
Interest = future value - amount saved
The formula for calculating future value:
FV = P (1 + r)^n
FV = Future value
P = Present value
R = interest rate
N = number of years
$50 x (1.1)^2 = $60.50
Interest = $60.50 - $50 = $10.50
why is no one helping me...i want a good grade but I need someone who is good with slope and is smarter than a 8th grader BUT NO no one wants to help me
Answer: what is the question
Step-by-step explanation:
what is the LCM of 5 and 7
Answer:
35
Step-by-step explanation:
Answer:
the answer is 35.
Step-by-step explanation:
18) PB = 8. Find PA.
For a school fundraiser, Jessica will make T-shirts. She will order T-shirts and print graphics on them. Jessica must spend $255 on a printing machine and
$6.80 per shirt for the blank shirts, Ink, and other supplies.
Part
What is the maximum number of T-shirts Jessica can make with a budget of $1,000?
Explain your answer or show your work:
how do u solve rational exponent equations
Will mark BRAINLIEST! Show work
Answer:
15%
Step-by-step explanation:
1. Subtract final value from starting value
65 - 55.25 = 9.75
2. Divide 9.75 by original number
9.75/65 = 0.15
3. Multiply quotient by 100 to get percentage
0.15 x 100 = 15%
please help, giving brainliest, thanks!
Answer:
Please look at the image.
I solved this by the information of 6 pages in 12 minutes which means 0.5 or half a page per minute.
Now you know you read half a page in a minute
5 pages in 10 minutes because:
10 × 0.5 = 5
8.5 pages in 17 minutes because:
17 × 0.5 = 8.5
Please I need help on these, dosent need to be right.
Answer:
Plug in the numbers in the table to find the pattern.
Step-by-step explanation:
Find the total surface area of this cone.
Leave your answer in terms of pi
SA=
The answer is 360 pie inches ^2
Find the measure of the largest angle in the diagram below.
Answer:
The largest angle is 102
Step-by-step explanation:
2x + 3x + 10 = 180
5x + 10 = 180
5x = 170
x = 34
2(34) = 68
3(34) + 10 = 102
Answer:
Step-by-step explanation:
102
Given Point A (3,-4) and Point B (8,6) on directed line segment AB, what is the y-coordinate of Point F
that partitions AB in the ratio of 3:2?
Answer:
(6,2) y-coordinate is 2
Step-by-step explanation:
The coordinates of the point F on directed line segment AB that partitions AB in the ratio 3 :2 are: (6, 2)
What is Coordinate geometry?The formula for finding the coordinates of a point that divides the line in ratio m:n are given by:
We are given that Point A (3,-4) and Point B (8,6) on directed line segment AB.
Here (x1,y1) and (x2,y2) are coordinates of the two points line passed through
(x1,y1) = A(-3,-4)
(x2,y2) = B(8,6)
Ratio: 3 : 2
m = 3
n = 2
Putting the values in the formula
( x, y) = (3 x 8 + 2 x 3 /5 , 3 x 6 + 2 x (-4) /5 )
( x, y) = (24 + 6 / 5 , 18 - 8 /5)
( x, y) = (30/5, 10/5)
( x, y) = (6, 2)
Hence,
The coordinates of the point F are: (6, 2)
Learn more about coordinate geometry at:
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What is the probability that I flip a coin three times and they are all heads? (Round to the nearest percent)
Answer:
There is probability of 33%.
how many terms are in the given expression 7x+5w+23t+3
Answer:
4
Step-by-step explanation:
7x 5w 23t 3
Rectangle ABCD is the image of ABCD after the reflection of which of the following lines
Answer My best guess is D
Step-by-step explanation:
At a school bake sale, all of the pies were cut into 6 pieces, so each person who bought a piece got ⅙ of a pie. Each slice sold for $2. The were sold out. How much money did the kids make if there were 11 pies sold? B. How many slices were sold?
Answer:
They made 132$, and 66 slices were sold.
Step-by-step explanation:
If all of the pies were cut into six pieces, and each piece costed $2, then you can multiply 6 x 2 to determine how much each pie cost. ($12)
If each pie costed $12 and there were 11 pies sold in total, then you can multiply 12 x 11 to find out how much money they made.
And to find out how many slices they sold you just have to multiply the 11 total pies by 6 because each pie had six pieces.
Rob is flying a kite with a string that makes a 70-degree angle with the ground. If the kite string is 27 meters long, how high is the kite above the ground?
(Please use the exact ratio to calculate the missing side and round your answer to the nearest hundredth.)
The kite is meters above the ground.
Answer:
25.37
Step-by-step explanation:
Use SOH or Sin∅=[tex]\frac{opposite}{hypotenuse}[/tex]
So Sin(70)= [tex]\frac{x}{27}[/tex]
Multiply both sides of the equation to end up with 27Sin(70)=x
Plug into your calculator in degrees and you get 25.37m
simplify a-(a+b)
(it's not b or a-b)
Answer:
-b
Step-by-step explanation:
a-(a+b)
a-a-b
-b
What is 5 1/2 - 3 1/4=? Ty if you answer.
Answer:
2.25
Step-by-step explanation:
your welcome. oh and make it a improper fraction then subtract:)
Answer:
2 1/4
Step-by-step explanation:
or 3.25 in decimal form
PLEASE HELP
is 18 35 and 53 going to make a right triangle
Answer:
No.
Step-by-step explanation:
53 + 35 = 88, add 18 = 106.
Answer:
no
Step-by-step explanation:
18x18 + 35 x35 = 53x53
324 + 1225 = 2809
1549 =\ 2809
9+7x=4x-9 Solve for X.. Help?
Answer:
-6 srr if you get it wrong
Step-by-step explanation:
9 + 7x = 4x - 9
7x - 4x = - 9 + (- 9)
3x = -18
x = -6
find the pyramid surface area 3ft 5ft 3ft
tell the height, width and depth then we will help