Answer:
The angle of elevation of the ramp is 64.60°
Step-by-step explanation:
Given;
length of the ramp, L = 35 ft
distance of the platform to the foot of the ramp, d = 15 ft
The length of the ramp forms the hypotenuse side of this right angled triangle;
The angle of elevation of the ramp is in angle between the hypotenuse and adjacent side of the triangle.
Cos x = adjacent / hypotenuse
Cos x = 15 / 35
Cos x = 0.4286
x = Cos⁻¹ (0.4286)
x = 64.62
x = 64.60°
Therefore, the angle of elevation of the ramp is 64.60°
5x - 9 = 7x + 6 - 2x
Answer:
Step-by-step explanation:
5
x
−
9
=
7
x
+
6
−
2
x
Since
x
is on the right side of the equation, switch the sides so it is on the left side of the equation.
7
x
+
6
−
2
x
=
5
x
−
9
Subtract
2
x
from
7
x
.
5
x
+
6
=
5
x
−
9
Move all terms containing
x
to the left side of the equation.
Tap for more steps...
6
=
−
9
Since
6
≠
−
9
, there are no solutions.
No solution
Answer:
x=15
Step-by-step explanation:
5x-9=7x+6-2x
7x-2x=5x
5x-9=5x+6
5x-5x=x
x-9=6
9+6=15
x=15
Simplify the problem using the distributive property.
2(3x-5)
4- 3(x+1)
Answer:
2(3x−5)(4)−3(x+1)
Distribute:
=24x+−40+(−3)(x)+(−3)(1)
=24x+−40+−3x+−3
Combine Like Terms:
=24x+−40+−3x+−3
=(24x+−3x)+(−40+−3)
=21x+−43
Answer:
=21x−43
2(3x-5)
6x-10
4-3(x+1)
4-3x+1
-3x+1+4
-3x+5
6x-10-3x+5
6x-3x+5-10
3x-5
hope it helps!
can y’all please help meeeee
i would really appreciate it :)
Answer:
its 10
Step-by-step explanation:
Answer:
[tex]f^{-1}[/tex](x) = (x - 2)² - 6
Step-by-step explanation:
let y = f(x) and rearrange making x the subject, that is
y = [tex]\sqrt{x+6}[/tex] + 2 ( subtract 2 from both sides )
y - 2 = [tex]\sqrt{x+6}[/tex] ( square both sides )
(y - 2)² = x + 6 ( subtract 6 from both sides )
(y - 2)² - 6 = x
Change y back into terms of x with x = [tex]f^{-1}[/tex](x) , thus
[tex]f^{-1}[/tex](x) = (x - 2)² - 6
If 7 liters of petrol cost $14.70, calculate the cost of 15 liters of petrol.
Hi
7 = 14.70
15= X
so : X = 15*14.70 /7 = 31.5
15 liters of petrol cost 31.5
The cost of 15 liters of petrol if 7 liters cost $14.70 is $31.50
To calculate the cost of 15 liters of petrol if 7 liters of petrol cost $14.70,
First, we will determine the cost of 1 liter of petrol.
From the question,
7 liters of petrol cost $14.70
That is,
7L = $14.70
Then,
1 L = $14.70 ÷ 7
1 L = $2.10
∴ The cost of 1 liter of petrol is $2.10
Now, for the cost of 15 liters of petrol, we will multiply the unit price ($2.10) by 15
That is,
The cost of 15 liters of petrol = 15 × $2.10
∴ The cost of 15 liters of petrol = $31.50
Hence, the cost of 15 liters of petrol if 7 liters cost $14.70 is $31.50
Learn more here: https://brainly.com/question/23804367
please help, it’s a test and i don’t understand PLSPLS I HAVE LESS THAN AN HOUR!!!!
Answer:
1. obtuse
2. straight
3. acute
4. 62°
5. 72° ( I think, I'm not too sure on this one)
A student solved the equation 7 = 3(t - 1) - 2(t - 3) as shown below. Assume there is a value for t that satisfies the equation. Provide a justification for each step of the solution process. LaTeX: 7\:=\:3\left(t-1\right)-2\left(t-3\right)7 = 3 ( t − 1 ) − 2 ( t − 3 ) LaTeX: 7\:=\:3t\:-3-2t\:+67 = 3 t − 3 − 2 t + 6 LaTeX: 7\:=\:t\:+37 = t + 3 Justification: ? like terms
PLEASE ANSWER!!
Answer:
t + 3
Step-by-step explanation:
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easy - lots of points!!
For the function f defined by f(x) = 2x^2 – 3x, evaluate: f(x+3)
Answer:
2x² + 9x + 9
Step-by-step explanation:
To evaluate f(x + 3) substitute x = x + 3 into f(x), that is
f(x + 3) = 2(x + 3)² - 3(x + 3) ← expand (x + 3)² using FOIL
= 2(x² + 6x + 9) - 3(x + 3) ← distribute both parenthesis
= 2x² + 12x + 18 - 3x - 9 ← collect like terms
= 2x² + 9x + 9
How many solutions are there to the equation below? -46 = 3x + 7 x
Answer:
One
Step-by-step explanation:
7x+3x= - 46
10x= - 46
x= - 4.6
one answer
Prompt: What does Lincoln hope to gain by using the statement, "let us judge not, that we be not
judged"? Justify your answer and support it with information from the source.
Help!!!!!
Possible Answer:
"Let us Judge not, that we be not judged" I belive it means to not judge others by there Race, Relgion, or Color.
angle a measure 28 measure and angle b measure 74 what is is the measure of angel F
Answer:
78 degrees
Step-by-step explanation:
Assuming you are talking about a triangle, you would add 28 and 74 to get 102. Then subtract from 180.
28+74=102
180-102=78
Hope this helps :-)
Answer:
Assuming these are angles of a triangle, angel F should equal 78.
Step-by-step explanation:
All angles of any triangle add up to 180 degrees. 180-28-74=78.
An airline charges $150 for a ticket and $20 for each bag. Which equation shows the relationship between the number of bag, b , and the total cost, c , for flying with this airline?
Answer:
c = 150 + 20b
Step-by-step explanation:
Given:
Ticket charges = $150
Each bag carry cost = $20
Find:
Relationship between bag(b) and cost(c)
Computation:
⇒ Total cost = Ticket charges + $20(number of bags)
⇒ c = 150 + 20(b)
⇒ c = 150 + 20b
48/16 divided by 18/24
Answer:
4
Step-by-step explanation:
3/.75=4
Answer:
4
Step-by-step explanation:
48/16 equals to 3. 18/24 equals to 3/4 or 0.75. 3 divided by 0.75 equals to 4
Which of the following numbers is a factor of 78?
Choose 1 answer :
A- 7
B- 4
C- 6
D- 9
Step-by-step explanation:
78 = 2 * 39 = 2 * 3 * 13.
Since 6 = 2 * 3 and its factors can be found in 78,
Hence the answer is 6. (C)
A problem states: "There are 2 more horses than cows in a field. There are 16 animals in the field in all. How many horses are there in the field?"
Let c represent the number of cows.
Which equation represents the situation?
c + 2 = 16
2c−2=16
2c + 2 = 16
2(c+2)=16
Answer: 2c + 2 = 16
Step-by-step explanation:
One group has 2 more than the other.
That means in total, they are the same but + 2.
Only 2c + 2 = 16 represents this.
Order these numbers from least to greatest. 37.5%, 1/3, 0.3, 40%, 3/5.
Answer:
0.3, 1/3, 37.5%, 40%, 3/5Step-by-step explanation:
Given the numbers 37.5%, 1/3, 0.3, 40%, 3/5, before we can order the numbers from the least to greatest, we need to first express al the values in percentage.
For 1/3;
= 1/3 * 100
= 100/3
= 33.3%
For 0.3:
= 0.3 * 100
= 3/10*100
= 30%
for 3/5;
= 3/5 * 100
= 300/5
= 60%
Hence the numbers in percentage are . 37.5%, 33.3%, 30%, 40%, 60%
The values from the least to the greatest in terms of percentage is 30%, 33.3%, 37.5%, 40%, 60%
In term of the given values from least to greatest is;
0.3, 1/3, 37.5%, 40%, 3/5
if gas cost $3.00 per gallon, what factors will determine how much gas you purchase?
Answer:
If you are on a budget it depends if you want to purchase $50 or another amount, while if you want to fill up the gas tank it depends on the cars' capacity. Some cars can take up to 11 gallons of gas, so if wanting to fill up the tank you would need to spend $33.
Hope this helps!
explain how to factorise i,j and n
Answer:
see explanation
Step-by-step explanation:
A difference of squares is factored in general as
a² - b² = (a - b)(a + b)
(i)
(x + 5)² - 16 ← is a difference of squares, that is
(x + 5)² - 4²
= (x + 5 - 4)(x + 5 + 4)
= (x + 1)(x + 9)
(j)
(x - 4)² - 9 ← is a difference of squares, that is
(x - 4)² - 3²
= (x - 4 - 3)(x - 4 + 3)
= (x - 7)(x - 1)
(n)
(2y + 7)² - y² ← is a difference of squares
= (2y + 7 - y)(2y + 7 + y)
=(y + 7)(3y + 7)
Solve for x. Show steps.
1. 3x = 2x + 2
2. 3x + 5 = 4x + 1
3. 6x + 3 = 3x + 12
Answer:
1: x=2, 2: x=4, 3:x=3
Step-by-step explanation:
They are correct because i checked them
A store sells bouquets of fruits for $10 a bouquet. The daily cost to produce x bouquets of fruits is defined by the
function f(x) = - x4 + 3x3 + 5x2 + 20x + 1.
What is the least number of bouquets that must be sold for the store to make a profit?
3
4
5
6
Answer:
5
Step-by-step explanation:
Edgunity
Answer:
5 C
Step-by-step explanation:
even though the zeros are .401 and 4.819 its a real world problem and would only make sense to round. Once u round you have 1 and 5, and since 5 is greater, it must be 5.
The lines shown below are parallel. If the green line has a slope of -17, what is the slope of the red line?
Answer:
it would be 17
Step-by-step explanation:
Cynthia Besch wants to buy a rug for a room that is 29 ft wide and 30 ft long. She wants to leave a uniform strip of floor around the rug. She can afford to buy 756 square feet of carpeting. What dimension should the rug have?
Answer:
Dimensions of rug:
Length = 28 ft
Width = 27 ft
Step-by-step explanation:
The given dimensions of the room is:
Length = 30 ft
Width = 29 ft
Area of carpeting = 756 sq ft
Kindly refer to the attached image.
Let the uniform strip around floor is of length = [tex]x[/tex] ft
This [tex]x[/tex] feet will be 2 times along the length and
2 times along the width of room.
So, length of rug = 30 -2 [tex]\times[/tex] [tex]x[/tex] and
Width of rug = 29 -2 [tex]\times[/tex] [tex]x[/tex]
It will be rectangular in shape.
Area of a rectangle is given as:
[tex]A = Length\times Width[/tex]
[tex]756 = (30-2x) (29-2x)\\\Rightarrow 756 = 870 - 118x+4x^2\\\Rightarrow 4x^2-118x+114=0\\\Rightarrow 2x^2-59x+57=0\\\Rightarrow 2x^2-57x-2x+57=0\\\Rightarrow x =1, -\dfrac{57}{2}[/tex]
Negative length not possible.
So,Length of strip, [tex]x = 1\ ft[/tex]
Dimensions of rug:
Length = 30 -2 = 28 ft
Width = 29 -2 = 27 ft
4(3x-1) = 5x+66 show all of your work
For a right triangle with coordinates (1,4),(4,4),(1,8), explain why both the distance formula and the Pythagorean Theorem can be used to find the length of the hypotenuse.
What is the final point of (-2,1) Up 4, right 6 then reflect across the x-axis
3) A gardener has 75 clients, 45% of whom are businesses. Find the number of business clients. A) 34 clients B) 41 clients C) 73 clients D) 36 clients
Answer:
A) 34 clients
Step-by-step explanation:
From the information given, to be able to determine the number of business clients you have to calculate the 45 percent of the total number of clients that is 75:
75*45%= 33.75→ 34
According to this, the answer is that the number of business clients is 34.
dilations PLEASE HELP ME PLEASE
Answer:
D' (6, - 6 )
Step-by-step explanation:
Assuming the dilatation is centred at the origin then multiply the coordinates of D by 3, that is
D (2, - 2 ) → D'(3 × 2, 3 × - 2 ) → D' (6, - 6 )
PLEASE ANSWER THE FOLLOWING 4 QUESTIONS PLEASE BE HONEST
Answer: Answer
Step-by-step explanation:
The Blue One- 85
The Red One- 47
The Green One- 48
The Pink One- There were 6 penguins swimming in the sea. Two left, then 5 joined. How many penguins are there swimming in the sea now?
6 - 2 + 5 = x
Please let me know if my Math is correct!
If 17% of gummy bears are red then how many red gummy bears will be red out of 300?
Answer: 51
Step-by-step explanation:
17% of 300 is 51
300 x .17 =51.
3 Hundreds = ____ Tens
jon used 64.6 of fower to make 8 loafs bread. how much flower did he use to make each loaf of bread
Answer:
8.075
Step-by-step explanation:
Since john used the flour on 8 different loafs, the best way to solve this would be to use division. You did not specify lbs or any other weight so that's the only answer I can provide.