Answer:
21
Step-by-step explanation:
my teacher said so
It would take Jay 21 minutes to clear the driveway of the snow working alone
The equation is given as:
[tex]\frac 1j + \frac{1}{j + 21} = \frac{1}{14}[/tex]
Take the LCM
[tex]\frac{j + 21 + j}{j(j + 21)} = \frac{1}{14}[/tex]
This gives
[tex]\frac{2j + 21}{j(j + 21)} = \frac{1}{14}[/tex]
Cross multiply
[tex]14(2j + 21) =j(j + 21)[/tex]
Expand
[tex]28j + 294 =j^2 + 21j[/tex]
Collect like terms
[tex]j^2 +21j - 28j - 294 =0[/tex]
[tex]j^2 - 7j - 294 =0[/tex]
Using a graphing calculator, we have:
[tex]j = 21\ or\ x =-14[/tex]
The value of j cannot be negative, because of the context.
So, it would take Jay 21 minutes to clear the driveway of the snow working alone
Read more about rational equations at:
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I NEED HELP ASAP!!! PLEASE REPLY!!
Answer:
Both are correct
Step-by-step explanation:
Answer: both are correct
Step-by-step explanation:
Both are correct
you can use either way to solve it.
On a class trip to the aquarium, there is 1 adult for every 7 students. If 44 students go on the field trip, how many adults are going on the field trip?
Answer:
There would be at least 6 adults
Step-by-step explanation:
7 students-1 adult
7 students-1 adult
7 students-1 adult
7 students-1 adult
7 students-1 adult
7 students-1 adult
2 students-0 adults
What are the domain and range of the function represented by the set of
ordered pairs?
{(-6, 12).(-3,-2), (1,0), (14,-4)}
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
Domain = { -6 , -3 , 1 , 14 }
Range = { -4 , -2 , 0 , 12 }
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
Thus the correct answer is (( B )) .
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
Here, the domain and range of the function represented by the set of ordered pairs {(-6, 12).(-3,-2), (1,0), (14,-4)} is
{-6, -3, 1, 14} and {12, -2, 0, -4} respectively.
What is range?We know that the range refers to all possible values of y, and the domain refers to all possible values of x.
How to solve it?For (-6, 12), the x value = -6 and the y value = 12.
For (-3, -2), the x value = -3 and the y value = -2.
For (1, 0), the x value = 1 and the y value = 0.
For (14, -4), the x value = 14 and the y value = -4.
So, the domain is {-6, -3, 1, 14} and the range is {12, -2, 0, -4}.
Therefore the domain and range of the function represented by the set of ordered pairs {(-6, 12).(-3,-2), (1,0), (14,-4)} is
{-6, -3, 1, 14} and {12, -2, 0, -4} respectively. So, option B is correct.
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I am an Ace and am looking for some extra points. In celebration, I have decided to give away 30 points!! You only have to answer my question: What is 3^7 x 2^7??? Please answer with a power like x^y with the answer.
Answer:
279936
Step-by-step explanation:
Good luck ranking to the next level!
Answer:
279936
I just got ace rank! Finally people will KNOW I am the person who gets right answers!
Simplify your answer and keep improper, if necessary.
Mrs. Gribble was making 4 cakes and each cake required 1 1/2 cups of flour. How much flour did she use in all?
Answer:
6
Step-by-step explanation:
i liget looked this up on calculator soup
what is the radius of the cylinder
Adam, Barry, and Charles visited a small farmers market last Saturday. Adam purchased 3 dozen eggs, 1 wheel of cheese, and 5 pounds of potatoes. Barry bought 1 dozen eggs and 10 pounds of potatoes, while Charles purchased 2 dozen eggs and 2 pounds of potatoes. If Adam’s bill was $38.25, Barry’s $36.50 and Charles’ $17.20, how much did a dozen eggs, a wheel of cheese and a pound of potatoes cost?
Answer:
Dozen eggs = $5.5
Wheel of cheese = $6.25
Pound of potatoes = $3.1
Step-by-step explanation:
Let the cost
Dozen of egg = x
Wheel of cheese = y
Pound of potato = z
We will form linear equations using the information given in the question
Adam purchased 3 dozen eggs, 1 wheel of cheese, and 5 pounds of potatoes
3x + y + 5z = 38.25 ................(1)
Barry bought 1 dozen eggs and 10 pounds of potatoes
x + 10z = 36.50 ............(2)
Charles purchased 2 dozen eggs and 2 pounds of potatoes
2x + 2z = 17.20 .................(3)
solving 2 and 3
x = $5.5 and z = $3.1
substitute these values in equation 1
we get
y = $6.25
The cost
Dozen eggs = $5.5
Wheel of cheese = $6.25
Pound of potatoes = $3.1
Last year, a 1.6-gallon container of ice cream sold for $5.99. This year, the same ice cream, now in a 1.2-gallon container, sells for the same price of $5.99. By what percentage was the weight of a container of the ice cream reduced? A. 75% B. 25% C. 60% D. 40%
Answer:
25% is the answer
Step-by-step explanation:
From last year to this year, the weight of the container is reduced by
B. 25%
What is the percentage?A percentage is a value per hundredth. Percentages can be converted into decimals and fractions by dividing the percentage value by a hundred.
Given, Last year, a 1.6-gallon container of ice cream sold for $5.99. This year, the same ice cream is now in a 1.2-gallon container.
So, The amount of icecream increased this year is,
= (1.6 - 1.2) gallons.
= 0.4 gallons.
Now to obtain percentage change we'll divide the net amount change by the original amount and multiply it by 100% which is,
= (0.4/1.6)×100%.
= 0.25×100%.
= 25%.
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please help ;-; what is the constant of proportionality
Answer:
.6
Step-by-step explanation:
3/5=.6
Each line represents a proportional relationship.Write an equation for each line. Show your work.
Answer:
do u think u can zoom in more on the graph
Step-by-step explanation:
Answer:
can you zoom more in the graph?
Step-by-step explanation:
PLEASE HELP ME ASAP
i’ll give you brainliest if it’s correct please help me :(
TWO PART QUESTION
Emilio throws a marshmallow into the air from his balcony. The height of the marshmallow (in feet) is represented by the equation h= -16(t-1/4)^2+49, where T is the time (in seconds) after he throws the marshmallow. What is the maximum height of the marshmallow?
SECOND PART
Emilio throws a marshmallow into the air from his balcony. The height of the marshmallow (in feet) is represented by the equation h= -16(t-1/4)^2+49, where T is the time (in seconds) after he throws the marshmallow. How long after Emilio throws the marshmallow does it reach its maximum height?
Answer:
part 1 = 49
part 2 = .25 seconds
Step-by-step explanation:
hope that can help!
A water hose at a fire station leaked 120 gallons of
water. Water leaked at a rate of 15 gallons every 4
minutes. At this rate, how many minutes did it take
all 120 gallons of water to leak from the water
hose?
sum1 help ASAP
Answer:
Step-by-step explanation:
This is a proportion question
15 gallons / 4 minutes = 120 / x Cross multiply
15x = 4 * 120 Combine the right
15x = 480 Divide by 15
x = 480/15
x = 32 minutes
2/5 divided by 2 1/10
Answer:
4/21
Step-by-step explanation:
first you need to make them both fractions, not mixed numbers. so it would be 2/5 divided by 21/10. then you flip the second number so you can multiply it : 2/5 * 10/21. 5 and 10 are divisible by 5 so you can cross 5 out and make a 1 and cross 10 out and make a 2: 2/1 * 2/21. then multiply and you get 4/21!
hope this helps!
Translate this algebraic phrase into an algebraic expression. "4 less than the height"
Answer:
h - 4
Step-by-step explanation:
Let "h" represent the height. You would subtract the height by 4.
h - 4
Add preposition ...The plane landed ____the ranway.
Answer:
On
The plane landed ON the runway.
Step-by-step explanation:
A preposition is a word that shows the relationship of a noun or pronoun with another word.
For example, in this sentence the noun is plane and we need to connect it with runway.
And on is the answer that makes the most sense.
A car has 15 gallons of gas in its tank. The car travels 35 miles per gallon of gas. It uses 1/35 of gas to go 1 mile. How much gas dose the car use to 100 miles? Show your reasoning.
Answer:
um......I think 2 figure it out....
Step-by-step explanation:
A car has 15 gallons of gas in its tank. The car travels 35 miles per gallon of gas. It uses 1/35 of gas to go 1 mile.
answer all questions!!!!!!!!
Answer:3 6 7 9 9
Step-by-step explanation:
What is the slope of the line that passes through the points E(5, 1) and F(2, 7)?
A) 8/3
B) 3/8
C) -3/8
D) -8/3
Answer:
I would say it's B(3/8)
Answer:
7 - 1/2 - 5 = 6/-3 = -2
Step-by-step explanation:
None of those answers are correct the answer is -2
Tell whether the angles are adjacent or vertical. Then find the value of x.
Answer:
x=44, They are adjacent
Step-by-step explanation:
since this is right angle it is 90 degrees. You set the whole thing equal to 90, so 43+x+3=90, add 43 and 3=46. Then you subtract 90-46, you get x=44.
A problem is listed below. Identify its type.
Julie's parents' 25th anniversary is in 2 years. She'd like to give her parents a vacation package for their anniversary. She anticipates the vacation package will cost her $2000. An account at her bank pays 5% per year compounded monthly. How much does she need to deposit today in this account, so that she can buy the package deal for her parents' anniversary?
a) Simple Interest
b) Future Value with compound interest
c) Future Value with simple interest
d) Effective Rate
e) Present Value with compound interest
Answer:
e) Present Value with compound interest
Step-by-step explanation:
in order to determine how much money does Julie need to deposit we have to use the present value formula with compound interest:
present value = future value / (1 + i/12)ⁿ
future value = $2,000i/12 = 5%/12 = 0.4167%n = 24$2,000 = present value x (1 + 0.4167%)²⁴
present value = $2,000 / (1 + 0.4167%)ⁿ = $1,810.05
you can also calculate it using the future value formula, but you will end with the present value formula:
future value = present value x (1 + i/12)ⁿ
present value = future value / (1 + i/12)ⁿ ⇒ you are adding 1 more step
you could also calculate it using the present value formula and the effective annual rate:
effective rate = (1 + 0.05/12)¹² - 1 = 5.1162%
present value = $2,000 / (1 + 5.1162)² = $1,810.05 ⇒ but again you are just adding more steps into the process
What is the length of the unknown side of the right triangle?
Answer:
Hypotenuse
Step-by-step explanation:
Answer:
L= the sum of the square root of the square of the opposite side and the square of the base the triangle.
Step-by-step explanation:
Using Pythagorean Theorem :
the square of the hypotenuse= the square of the opposite side + the square of the base.
1
Find the missing side
in the similar figures below:
30
15
24
25
.X
Ms. Price
Mr. Clark
Mr. Smith
A) 30
B) 34
C) 36
D) 38
E) 10
Mrs. Wilson
Mrs. White
im not sure ask a professional
Round 859, 344 to the nearest thousand.
Answer: 860,000
Step-by-step explanation:
Since the nearest thousand is mostly higher then most of the numbers in the number line, we know that 9 is greater. It's close to 60,000 if we remove the 8. Therefore, the answer is 860.000
Solve for s.
8 - 4s = s + 13
Answer:
s= -1
Step-by-step explanation:
In general, how tall are giraffes? stat or not stat
Answer:
18 feet tall
Giraffes are the tallest land animals. Female giraffes are up to 14 feet tall and weigh up to 1,500 pounds. Meanwhile, males are up to 18 feet tall and can weigh 3,000 pounds.
Meet Forest, the tallest giraffe in the world
(CNN) A male giraffe living in a zoo in Australia has been crowned the tallest of them all, hitting a giddy 5.7 meters (18 feet, 8 inches). Isn't that cool?!
( just so you know some of this information was with the help of google)
Brainliest?
Consider W=4(cos(pi/2)+ isin(pi/2)) and Z=3(cos(3 pi/2) + isin(3 pi/2)). What is W + Z expressed in polar form?
Answer: The answer is b!!
Step-by-step explanation: I just took the test!
Answer:
B
Step-by-step explanation:
Ed2021
Louisa used Downtown Taxi, which charges $2 for the first mile and $1.10 for each additional mile. Pietro used Uptown Cab, which charges $5 for the first mile and $0.95 for each additional mile. They paid the same amount and traveled the same distance. How far did they travel?
Answer: 21 miles
Step-by-step explanation:
what is 1/2 times 5/4?
Answer:
1 x 5 = 5
2 x 4 = 8
5/8 is the answer.
Answer:
5/8 or 0.625
Step-by-step explanation:
1/2 * 5/4
= 5*1/4*2
=5/8
FIRST RIGHT ANSWER GETS BRAINLIEST!!!!
Madison Middle School spends $750 per year on club activities. They spend at least twice that amount on after-school activities. Write an inequality that represents how much they spend on after-school activities.
Answer:
x ≥ 1500
Step-by-step explanation:
find the original price of a pair of shoes if the sale price is $40 after a 60% discount
Answer:
Thus, the original price of the pair of shoes was $100.
Step-by-step explanation:
Percentages
After a 60% discount, the sale price is now valued at 100-60=40% of its original price.
If the sale price is $40, then the original price is calculated as
$40 / 40 * 100 = $100
Thus, the original price of the pair of shoes was $100.
Verify applying 60% discount:
$100 - 60*$100/100 = $40