Answer:
5845.67147554
Step-by-step explanation:
(45)(150)cos(30degrees)
The work done by the lawn mower is 3375 ft-lb.
The work done is equal to the force applied times the distance moved, but only in the direction of the force. In this case, the force is not horizontal, so we need to find the component of the force that is parallel to the ground.
The force applied to the lawn mower is 45 lb, and the angle between the force and the horizontal is 30°. We can use the sine function to find the component of the force that is parallel to the ground:
[tex]F_{parallel[/tex] = F * sin(theta) = 45 lb * sin(30°) = 22.5 lb
The work done is then:
W = [tex]F_{parallel[/tex] * d = 22.5 lb * 150 ft = 3375 ft-lb
Therefore, the work done is 3375 ft-lb.
Here is the solution in mathematical notation:
Work = [tex]F_{parallel[/tex] * d = F * sin(theta) * d = 45 lb * sin(30°) * 150 ft = 3375 ft-lb
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11) A rectangular garden has an area of 36.06 sq. ft. If the width is 6 ft, find the length. 12
Area of garden = 36.06 ft²
Width = 6 ft
Area = l × b
[tex]36.06 = l \times 6 \\ l = \frac{36.06}{6} \\ l = 6.01[/tex]
- BRAINLIEST answerer
It’s for pre college
Answer:
y=-2x+12
Step-by-step explanation:
The function f(x) = −(x + 5)(x + 1) is shown. On a coordinate plane, a parabola opens down. It goes through (negative 5, 0), has a vertex at (negative 3, 4), and goes through (negative 1, 0). What is the range of the function? all real numbers less than or equal to 4 all real numbers less than or equal to −3 all real numbers greater than or equal to 4 all real numbers greater than or equal to −3 Mark this and return
Answer:
Vertex of a quadratic function (formula)
Find the percentage of change. In 2016, 136.75 million votes were cast for the presidential election. In 2020 151.8 million votes have been counted . What’s the percentage of change ?
Answer:
11.0% increase
Step-by-step explanation:
The percentage change can be found from ...
((new value)/(old value) -1) × 100%
= (151.8/136.75 -1) × 100%
≈ (1.1100548 -1) × 100%
≈ 11.0% . . . . . increase
Audrey is hosting a movie marathon over the weekend. There will be p people at the party
altogether. Audrey estimates she'll need one bag of cheese popcorn and one pack of gummy
worms per person. A bag of cheese popcorn costs $2.50, and a pack of gummy worms costs
$1.50.
Pick all the expressions that represent how much money Audrey will spend on cheese
popcorn and gummy worms.
2.50( + 1) + 1.50( + 1)
2.50p + 1.50p
4.00p
p(2.50 +1.50)
Answer:
2,3 and 4
Step-by-step explanation:
The 2nd one:
2.50p + 1.50p because for each person she needs 1.50 for the gummy worms and 2.50 for the popcorn.
The 3rd one becuase it’s the same as the 2nd one, just added together already.
‘And the 4th one, it’s the same as 2 and 3, just in parentheses.
what is a 4-diget number that is divisible by both 5 and 6 explain
Answer:
3000, 1200, 6000 Are all possible answers
Step-by-step explanation:
A 4 digit number is a number consisting of 4 numerals, such as 1000, 2000, and 1234.
Numbers 5 and 6 go into many numbers. 5 goes into any number ending in 0 or 5. 6 goes into all multiples of 6, 12, 18, 24, and more.
We can confidently say that numbers 3000, 1200, 6000 Are all possible answers to this question because numbers 5 and 6 can go into these numbers.
Hope this helped!
The sales tax rate is 10%. If Janelle buys a bookcase priced at $92, how much tax will she pay?
$
Answer:
$9.20
Step-by-step explanation:
10% of 92.0 is 9.2 (just move the decimal point one place to the left
Is the value negative 10 to the left or right of a negative 5 on a horizontal number line?
Answer:
Step-by-step explanation:
there both 5The graph shows the relationship between the distance traveled by a
car and the amount of fuel used by the car. What is the constant of proportionality for this graph?
Answer:
2.5
Step-by-step explanation:
Perform the indicated operation.
1) f(x) = 4x + 5
Find f(f(-1))
Answer:
Step-by-step explanation:
f(-1)= 4(-1) + 5 = -4 + 5 = 1
f(1)= 4(1) + 5 = 9
Need help with this question
Answer:
Yes, it is a solution because inserting 8 into the equation gives you 13.
Step-by-step explanation:
1/2(8) + 9 = 13
4 + 9 = 13
13 = 13
Graph y= –3x+4. 20 POINTS!!!
Answer:
y=3 x−4
Step-by-step explanation:
The school store sold a total of 55 shirts for $620. The shirts sold were either red or white. If the red shirts sold for $12 each and the white shirts sold for $10 each, how many color of each shirt were sold?
Answer:
I used trial and error. It's a great method.
35 blue shirts
20 gray shirts
35*12=420
20*10=200
420+200=620.
Step-by-step explanation:
Answer:
$12R + $10W = $620
r=35
w=20
Step-by-step explanation:
Shen drinks 0.55 L of milk every day. How much milk does he drink in 13 days?
Write your answer in milliliters.
Answer: 7,150 mL
Step-by-step explanation:
Shen drinks 0.55L of milk daily.
In order to find how much milk Shen is drinking in 13 days multiply 0.55 L by 13:
0.55 × 13 = 7.15 L
Turn the Liters into milliliters:
1 liter = 1000 mL
7.15 liters = 7,150 mL
PLEASE FOR THE LOVE OF GOD HELPPPP!!!!! THESE ARE DUE TONIGHT!!!
1. Twelve hungry teenagers can devour a very large pizza in 20 minutes. How many teenagers would it take to finish a very large pizza in 15 minutes? (Assume that all teenagers eat pizza at the same rate.)
2. For a statue of Miss Levans, the amount of gold required is directly proportional to the square of the height of the statue. A statue of Miss Levans that is 20 feet tall requires 80 pounds of gold. How many pounds of gold does a statue that is 25 feet tall require?
3. Tina lives 30 miles away from her work, and she normally drives at 45 miles per hour. If she wants to get to work 10 minutes earlier, how fast should she drive to work, in miles per hour?
4. All of the members of our spray-painting team paint at the same speed. If 5 team members can paint a certain wall in 27 minutes, then how many minutes would it take 15 of our team members to paint the same wall?
5. All of the members of our spray-painting team paint at the same speed. If 8 team members can paint a 5000 square foot wall in 30 minutes, then how many minutes would it take the 8 members to paint an 8000 square foot wall?
6. All of the members of our spray-painting team paint at the same speed. If 12 team members can paint a 2400 square foot wall in 45 minutes, then how many minutes would it take for 9 team members to paint a 3600 square foot wall?
7. I drove to my parents' house at 60 miles per hour. If I had driven 50 miles an hour instead, then I would have gotten there 40 minutes later. How many miles did I drive?
8. Fake gold bricks are made by covering concrete cubes with gold paint, so the cost of the paint is directly proportional to their surface area while the cost of the concrete is directly proportional to their volume. A cube with edges of length 1 inch costs $1.30 to make, while a cube with edges of length 2 inches costs $6.80 to make. How much would a cube with edges of length 3 inches cost to make?
9. Anabel's horse runs 24 miles per hour. Jackie's horse runs 28 miles per hour. Both horses stand at the starting line of a straight 2-mile track, and Jackie's horse starts running 30 seconds after Anabel's. How many miles from the starting line does Jackie's horse catch up to Anabel's?
10. Mrs. Danforth packed 5 bags of fun-sized candies for her family's picnic. Each bag contains 16 pieces. She had intended to pass out the same number of candies to each of her 4 children. But Cameron, her second-youngest, argues that she should instead distribute the candies in proportion to the children's ages. All of the children have different ages. If Cameron can convince his mother to give out the candies his way, he will gain two candies while his four-year-old sister will lose twelve. How old is Mrs. Danforth's oldest child?
Answer:
1) 9 teenagers
2) 100 pounds
3) . . .
4) 81 minutes
5) 48 minutes
6) 67.5 minutes
7) . . .
8) $10.20
9) . . .
10) . . .
Sorry that I wasn't able to get all of the answers.
I'm also not sure if number 4 is correct, but I don't know what else it would be.
But anyway, hope it helps!
Solution:
The shadow of an object is directly proportional to its height. Thus,
\[\frac{\text{Height of object}}{\text{Length of shadow}} = \frac{6}{16} = \frac{3}{8}.\]
Therefore, the height of the flagpole is $\frac{3}{8} \cdot 72 = \boxed{27}$ feet.
Your Response(s):
$ 27
VtProblem 2 – Correct! – Score: 7 / 7 (28044)
Problem: Report Error
Twelve hungry teenagers can devour a very large pizza in $20$ minutes. How many teenagers would it take to finish a very large pizza in $15$ minutes? (Assume that all teenagers eat pizza at the same rate.)
(Based on Problem 7.5 of the textbook.)
Solution:
Each of the twelve teenagers eats $\frac{1}{12}$ of the pizza in $20$ minutes. Thus, the rate of a teenager is
\[\frac{\frac{1}{12} \text{ pizza}}{20 \text { minutes}} = \frac{1}{240} \ \frac{\text{pizza}}{\text{minute}}.\]
This means in $15$ minutes, each teenager can eat
\[(15 \text{ minutes}) \left( \frac{1}{240} \ \frac{\text{pizza}}{\text{minute}} \right) = \frac{1}{16} \text{ pizza}.\]Therefore, it will take $\boxed{16}$ teenagers.
Alternatively, the number of teenagers is inversely proportional to the time it takes them to finish. From the given information, the constant of proportionality is $12 \cdot 20 = 240.$ Therefore, the answer we seek is $\frac{240}{15} = \boxed{16}.$
Your Response(s):
$ 16
VtProblem 3 – Correct! – Score: 1 / 7 (28043)
Problem: Report Error
For a statue of Miss Levans, the amount of gold required is directly proportional to the square of the height of the statue. A statue of Miss Levans that is $20$ feet tall requires $80$ pounds of gold. How many pounds of gold does a statue that is $25$ feet tall require?
We suggest you study Section 7.1 if you find this problem difficult.
Solution:
Let $h$ be the height of the statue, and let $g$ be the amount of gold required. Then
\[g = kh^2\]for some constant $k.$
Since $g = 80$ when $h = 20,$
\[80 = k \cdot 20^2,\]so
\[k = \frac{80}{20^2} = \frac{1}{5}.\]
So when $h = 25,$
\[g = \frac{1}{5} \cdot 25^2 = \boxed{125}.\]
Hint(s):
Let $h$ be the height of the statue, and let $g$ be the amount of gold required. Then $g = kh^2$ for some constant $k.$ Find $k.$
Your Response(s):
% 100
% 625/4
% 10000
$ 125
VtProblem 4 – Correct! – Score: 7 / 7 (28041)
Problem: Report Error
Tina lives $30$ miles away from her work, and she normally drives at $45$ miles per hour. If she wants to get to work $10$ minutes earlier, how fast should she drive to work, in miles per hour?
We suggest you study Section 7.4 if you find this problem difficult.
Solution:
What is the expression in factored form?
42² +112+6
Answer:
(4x+3) (x+2)
Step-by-step explanation:
4x times x equals 4x^2
4x times 2 equals 8x
3 times x equals 3x
3 times 2 equals 6
8x plus 3x equals 11x which sums up everything to the equation 4x^2+11x+6
plzzzzzz help meeeeeee asap
Mrs. Rokava bought 2 quintals of apples in Jumla for Rs 17.000. She paid Rs 15 per kg for the transportation from Jumla to Nepalgunj. 10 kg of apples were damage and she sold the remaining quantity at Rs 120 per kg Calculate her profit or loss percent in the total transaction
Answer:
Step-by-step explanation:
2 quintals = 200 kg Rs 17.000
transport 200(15) Rs 3.000 +
Total investment Rs 20.000
sales (200 - 10)(120) Rs 22.800
profit 22.800 - 20.000 Rs 2.800
2.2 What is the surface area of this polyhedron? Type numbers only in your answer. Do not type words.
2.1 What polyhedron will this net
create when folded?
22 What is its surface area?
_square units
Slank 1:
Answer:
the sur face is 39 square units
Select the two pairs of figures that are similar.
Answer:
b+a+09=097
Step-by-step explanation:
welcome
Determine whether the expression 9m^2 + k is equal to 7m^2 + 2(2k-m^2) + 5k. Use properties to justify your answer.
they are not equal
The first number cannot be simplified (9m^2 + k) and is the second is equal to 5m^2+9k
hope this helps <3
Is y+1=5(x-9) linear or nonlinear
Answer:
It Is Nonlinear
Step-by-step explanation:
Nonlinearity is a term used in statistics to describe a situation where there is not a straight-line or direct relationship between an independent variable and a dependent variable. In a nonlinear relationship, changes in the output do not change in direct proportion to changes in any of the inputs.
• Use the distributive property to write an expression that is equivalent to 8(a + 4)
Answer:
8a + 32
Step-by-step explanation:
Just multiple A and 4 times 8
each month, Jacob's bank statement shows a withdrawal of 30$ for his gym membership. what was the total withdrawal for the year?
Answer:
$360
Step-by-step explanation:
12 months in a year
12 x 30 = 360
$360
Answer:
The total withdrawal is $360 dollars
Step-by-step explanation:
12 months in a year
30 * 12 = 360
$360
Please help I’m stuck on this
Answer:
y = 1/2x +1/2
Step-by-step explanation:
I find it easier to write the equation if I can find grid intersection points where the line crosses. Here, a couple of them are (1, 1) and (3, 2).
The slope can be found from ...
m = (y2 -y1)/(x2 -x1)
m = (2 -1)/(3 -1) = 1/2
The y-intercept can be found from ...
b = y -mx
b = 1 -(1/2)(1) = 1/2 . . . . . . using (x, y) = (1, 1)
Then the slope-intercept equation is ...
y = mx +b
y = 1/2x +1/2
In standard form, the equation can be written as ...
x -2y = -1 . . . . . multiply by 2; subtract y+1 from both sides
A marketing analyst runs a bivariate regression model to forecast sales at a retail store based on advertising. Her model returns the following parameter estimates: b0: 145.7 b1: 99.1 Standard Error: 72.37 She wished to forecast sales for a store where advertising equals 163. What is the forecasted standard deviation of the sales distribution for this store
Answer:
yes sir
Step-by-step explanation:
6.8py
which of the following are right triangles: a triangle with side lenghts 6 inches, 8 inches,10 inches, a triangle with side lengths 8, 15, 17, a triangle with side lengths 5, 12, 13, a triangle with side lenght 4, 5, 6
9514 1404 393
Answer:
(6, 8, 10) right(8, 15, 17) right(5, 12, 13) rightStep-by-step explanation:
It can be helpful to memorize a few of the Pythagorean triples that show up in Algebra problems. Their multiples also form right triangles.
(3, 4, 5), (5, 12, 13), (7, 24, 25), (8, 15, 17), (9, 40, 41)
The triple (6, 8, 10) is the first one of these, multiplied by 2 inches.
The only triple that is a sequence of consecutive integers is (3, 4, 5), so you know immediately that (4, 5, 6) does not form a right triangle.
Of course, you can check any of them to see if the squares of the smaller two numbers total the square of the larger number:
4² +5² = 16 +25 = 41 ≠ 6² . . . . . (4, 5, 6) is not a right triangle
Dean put together first boxes for 5 of his neighbors. Each box cost $1.00 and contained a plant and a $3.00 pair of gardening gloves. He spent a total of $42.50 on everything. How much did each plant cost?
A hose fills a 18-gallon tub in 3 minutes how long will it take to fill a 45 gallon tub
Answer:
your answer should be 7 or 7.5 minutes.
Step-by-step explanation:
Hope this helps and have a great day
The required time to fill the tub is 7.5 minutes.
What is Unitary method ?In order to solve a problem for two different values of a quantity, its unit value is first derived. This method is known as unitary method.
Given that,
The time taken by hose to fill 18-gallon tub is 3 minutes.
So, the time taken by the the same hose to fill 45 gallon can be calculated using unitary method as,
The time it takes to fill 1 gallon is 3/18 = 1/6.
Thus, the time for filling 45 gallon is 1/6 × 45 = 7.5 minutes.
Hence, the time taken by the hose to fill 45 gallon tub is 7.5 minutes.
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Prove that (I ,+) is an abelian group
where I = Set of integers
Step-by-step explanation:
First we recall the relevant definitions and properties:
An even integer is an integer that is a multiple of 2, that is, an integer that can be written as 2k2k where kk is also an integer.
An abelian group is a set with an operation that is closed in that set, is associative, has an identity element, has inverses, and is commutative.
Addition is already associative and commutative over the set of all integers, and has an identity 00 and an inverse −n−n for each integer nn.
Oh, and multiplication of integers distributes over addition (this is important because we’re dealing with multiples of 2 but also with addition. The distributive property is how multiplication relates to addition).
This means we have to show a few things:
Addition is closed over the even integers. This holds due to the distributive property: if you have even integers 2k2k and 2m2m, then 2k+2m=2(k+m)2k+2m=2(k+m) is also an even integer. The odd integers fail this property: for example, 11 is odd but 1+1=21+1=2, which is not odd.
Addition is associative over the even integers. This holds because addition is already associative over the set of all integers: 2k+(2m+2j)=(2k+2m)+2j2k+(2m+2j)=(2k+2m)+2j. The odd integers do satisfy associativity, since they’re also a subset of the integers.
Addition has an identity element over the even integers. Since we already know that 00 is an identity for the set of all integers and 00 is even, this shows that we have an identity for the even integers: 2k+0=2k2k+0=2k. This doesn’t hold for the set of odd integers, because if nn and kk are odd integers and n+k=nn+k=n then k=0k=0, a contradiction since 00 is not odd.
Addition has inverses over the even integers. We already know that integers have inverses, and if 2k2k is an even integer then −k−k is the inverse of kk, so that 2k+2(−k)=2(k+(−k))=2(0)=02k+2(−k)=2(k+(−k))=2(0)=0. This means the even integer 2(−k)2(−k) is the inverse of 2k2k. The odd numbers do satisfy this property, since they’re also a subset of the integers.
Addition is commutative over the even integers. This holds because addition is already commutative over the set of all integers: 2k
