Answer:
The value of the acute angle is 40°Step-by-step explanation:
Given a ramp with a one-meter distance from edge to edge and reaches a height of 0.643 meters, the equivalent set up will form a right angled triangle where the length of the ramp will be the hypotenuse of the triangle and its height will be the opposite side of the triangle facing the acute angle directly.
To get the value of the acute angle, we will use the trigonometry ratio known as SOH, CAH, TOA.
Given length of ramp = hypotenuse = 1m
Height =Opposite side = 0.643m
Using SOH;
sin[tex]\theta\\[/tex] = [tex]\frac{opp}{hyp}[/tex]
sin[tex]\theta[/tex] = 0.643/1
sin[tex]\theta[/tex] = 0.643
[tex]\theta[/tex] =sin⁻¹0.643
[tex]\theta[/tex] = 40°
The value of the acute angle is 40°
In a standard 52−card deck, half of the cards are red and half are black. The 52 cards are divided evenly into 4 suits: spades, hearts, diamonds, and clubs. Each suit has three face cards (jack, queen, king), and an ace. Each suit also has 9 cards numbered from 2 to 10.
Dawn draws 1 card, replaces it, and draws another card. Is it more likely that she draws 2 black cards or 2 face cards?
It is more likely that she draws 2
cards.
Answer:
more likely she draws 2 face cards
Step-by-step explanation:
there is a 50% chance of drawing a black card because there are 26/52 black cards but there aee only 12/52 face cards
Find the equivalent expression 2^3
Answer:
8^1
Step-by-step explanation:
The rate of collection by a solar panel decreased steadily throughout the day due to increasing cloud cover until it reached a constant amount. Later in the day, there were two short periods where the Sun appeared, only for the cloud cover to return.
Which graph models the amount of energy collected depending on the time since the cloud cover began?
ANSWER: B
Answer:
Second graph
Step-by-step explanation:
In the second graph we can see how the rate of collection decreases steadily at 0 < x < 7.5; at x = 7.5 it becomes constant; and later in the day, there were two short periods (about x = 12.5 and x = 22.5) where the rate of collection has two peaks.
How would you describe "plate motion" to someone else? (In other words, how
do plates move?) *
Will mark as Brainliest plz help
The equation for the graph obtained when the graph of y= 1/x is compressed vertically by a factor of 0.25, translated 4 units right and then translated 3 units up
Answer:
y= (0.25)1/x-4 +3
Step-by-step explanation:
You just multiply the compression by mx. then you would add the translation (-4 since it goes to the right). and +3 since it moves up on the y axis
Calculate the inverse of the matrix and find the values for a, b, c, and d [4,12,1,10] A^1=[a/14,b/7,c/28,d/7]
Answer:
a: 5
b: -3
c: -1
d: 1
Step-by-step explanation:
Given the matrix:
A = [4 12
1 10]
its determinant is: 4*10 - 1*12 = 28
the inverse of A is:
1/28*[10 -12
-1 4]
[10/28 -12/28
-1/28 4/28]
A^-1 = [5/14 -3/7
-1/28 1/7]
a: 5
b: -3
c: -1
d: 1
The calculation is as follows:Given the matrix:
A = [4 12
1 10]
its determinant is: 4(10) - 1(12) = 28
Now
the inverse of A is:
1 ÷ 28 × [10 -12
-1 4]
[10 ÷ 28 -12 ÷ 28
-1 ÷ 28 4 ÷ 28]
A^-1 = [5÷ 14 -3 ÷ 7
-1÷ 28 1 ÷ 7]
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Multiply the binomials (3x - 5) and (4x + 6).
A)
12x2 + 38x + 30
B)
12x2 + 38x - 30
C)
12x2 - 2x + 30
D)
12x2 - 2x - 30 PLS ANYONE ANSWER
Answer:
12x² - 2x - 30
Step-by-step explanation:
(3x - 5)(4x + 6)
12x² + 18x - 20x - 30
12x² - 2x - 30
The Multiplication of the binomials (3x - 5) and (4x + 6) will be 12x² - 2x - 30. Then the correct option is D.
What is a polynomial?A polynomial expression is an algebraic expression with variables and coefficients. Unknown variables are what they're termed. We can use addition, subtraction, and other mathematical operations. However, a variable is not divisible.
The binomails are given below.
(3x - 5) and (4x + 6)
Multiply the binomials (3x - 5) and (4x + 6), then we have
⇒ (3x - 5) · (4x + 6)
⇒ 3x · (4x + 6) - 5 · (4x + 6)
⇒ 12x² + 18x - 20x - 30
⇒ 12x² - 2x - 30
The Multiplication of the binomials (3x - 5) and (4x + 6) will be 12x² - 2x - 30. Then the correct option is D.
More about the polynomial link is given below.
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Need help please one this one
Answer: each triangle is 1/3 of the whole
Step-by-step explanation: If you add an upside down triangle to the two triangles below you would get the whole.
three triangles make that whole so one third of the whole is only one of the triangles.
(hope this helps)
What is the side length of a square with a perimeter of 80 meters?
The side length is
meters.
Answer:
20
Step-by-step explanation:
A square has four sides and if the perimeter is 80 then you divide the perimeter by four to find the length of each side
The radius of a circle is 13 feet. What is the length of an arc that subtends an angle of
radians?
13 ft
Give the exact answer in simplest form.
feet
Answer:
The length of the arc is 221π/18 ft or 38.55 ft
Step-by-step explanation:
Given
Subtended angle, θ = 17π/18
Radius, r = 13 ft
Required
Length of the arc.
When an angle is given in radians, the length of the arc is calculated using the formula below
Length = rθ
By substituting
Length = 13 * 17π/18
Length = 221π/18
The answer can be left in this form.
But for simplification purpose, I'll solve further.
Taking π as 3.14
Length = 221 * 3.14/18
Length = 693.94/18
Length = 38.552222
Length = 38.55 ft (Approximated).
Hence, the length of the arc is 221π/18 ft or 38.55 ft
please answer quickly!
Answer:
1) 3 and 4
2) B
Step-by-step explanation:
sorry if i am wrong
A passenger car travels 16 mph faster than the commuter bus. If the bus travels 56 miles in the same time it takes the car to travel 84 miles, what is the speed of each vehicle?
Answer:
speed of commuter bus: 32 km
speed of passenger car : 48 mph
Step-by-step explanation:
We will use the concept of speed distance and time.
where time = distance / speed
____________________________________________________
Let the speed of commuter bus be x mph
Given that passenger car travels 16 mph faster than commuter bus.
Speed of passenger car if speed of commuter bus is x mph (x+16)mph
Distance traveled by commuter bus = 56 miles
Time taken by commuter bus to travel 56 miles = 56/X (1)
Distance traveled by passenger car = 84 miles
Time taken by passenger car to travel 84 miles = 84/(X+16) (2)
__________________________________________
It is given that time taken by both bus and car is same
so equating equation 1 and 2
we have
56/X = 84/(X+16) (by cross multiplication we have)
=> 56(X+16) = 84*X
=> 56X + 896 = 84X
=> 896 = 84X - 56 X
=> 896 = 28X
=> X = 896/28 = 32.
Therefore , speed of commuter bus is x mph or 32 km
speed of passenger car is x+16 mph = (32+16) mph = 48 mph
Final answer:
The passenger car travels at 48 mph, while the commuter bus travels at 32 mph, derived from the fact that they travel the same time but different distances.
Explanation:
To find the speeds of the passenger car and the commuter bus, we can use the formula for distance (distance = speed × time). Since both the bus and the car travel for the same amount of time, we can set up an equation to solve for their speeds based on the distances they travel.
Let x be the speed of the commuter bus in mph. Consequently, the speed of the passenger car would be x + 16 mph. According to the information given:
The bus travels 56 miles.
The car travels 84 miles.
Since they travel for the same time t, we have:
Bus: 56 miles = x × t
Car: 84 miles = (x + 16 mph) × t
Dividing the mileage of the car by the bus gives us:
[tex]\(\frac{84}{56} = \frac{(x + 16)t}{xt}\)[/tex]
[tex]\(1.5 = \frac{x + 16}{x}\)[/tex]
Multiplying by x to get rid of the fraction and then solving for x provides:
1.5x = x + 16
0.5x = 16
x = 32 mph
This means the bus travels at 32 mph and the passenger car travels at:
32 mph + 16 mph = 48 mph
Therefore, the speed of the passenger car is 48 mph and the speed of the commuter bus is 32 mph.
If a person's eye level is h meters above sea level and he can see d kilometers to the horizon, then d=3.57h. Suppose the person's eye level is 15.21 meters
above sea level. How far can he see to the horizon?
Round your answer to the nearest tenth.
Answer:
54.3m
Step-by-step explanation:
h = distance above sea level
d = distance he can sea above sea level
d = 3.57h
h = 15.21m
d = ?
d = 3.57 × 15.21
d = 54.2997m approximately 54.3m
The person can see up to a distance of 54.3m
Answer:
d = 7.5
Step-by-step explanation:
d = 3.57[tex]\sqrt{h}[/tex]
= 3.57[tex]\sqrt{4.41}[/tex]
= 3.57( 2.1)
= 7.497
d = 7.5!
I WILL MARK YOU THE BRAINLIEST OF YOU ANSWER FIRST PLS AND FAST!!
[Deleted Because Incorrect]
The shapes of the horizontal cross-sections of the cylinder below are not all congruent True or false
Answer:
False
Step-by-step explanation:
Please have a look at the attached photo
As we know the shapes of the horizontal cross-sections of the cylinder are circles congruent with the circle at the base and at the top of the cylinder because they are parallel to each other.
Factor the expression using the GCF.
60 – 36 =
Answer
12 (5 - 3)
Step-by-step explanation:
The greatest common factor is the largest number that will divide both numbers evenly. As an example, 6 is a common factor because it divides both 60 and 36. However, it is not the greatest common factor.
If I break 60 into it's prime factors, I would get 2 * 2 * 3 * 5.
If I break 36 into it's prime factors, I would get 2 * 2 * 3 * 3.
The two number have the factors, 2, 2, and 3 in common.
The greatest common factor is then: 2 * 2 * 3, or 12.
The expression can be factored as: 12 ( 5 - 3)
To factor the expression 60 - 36, we need to find the GCF of the numbers. The GCF is 12, so the factored form is 24.
Explanation:To factor the expression using the Greatest Common Factor (GCF) 60 - 36, we need to find the largest number that evenly divides both 60 and 36. The GCF of 60 and 36 is 12.
Therefore, we can rewrite the expression as 12 * (5 - 3). Simplifying further, we get 12 * 2 = 24.
So, the factored form of 60 - 36 is 24.
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Mr.Prieto wants to buy pizza that costs $14 each and 5 sodas for $2 each. He has $94. Write and solve an equation to find out how many pizzas he can buy.
Answer:
Mr. Prieto can buy 6 pizzas
Step-by-step explanation:
Cost of 5 soda's = 5 * 2 = $ 10
Remaining amount with him after buying 5 soda's= 94 - 10 = $ 84
Number of pizza's = Remaining amount/cost of 1 pizza
[tex]=\frac{84}{14}[/tex]
= 6 pizzas
Answer:
he can buy 6 pizzas
Step-by-step explanation:
5 x 2 = 10
94-10 = 84
84 divided by 14 = 6
he can buy 6 pizzas.
Which graph represents the solution set to this system of equations? –x + 2y = 6 and 4x + y = 3 On a coordinate plane, a line goes through (negative 1, negative 1) and (0, 3) and another line goes through (1, 4) and (2, 2). On a coordinate plane, a line goes through (negative 4, 0) and (0, 4) and another line goes through (negative 1, 1) and (0, negative 3). On a coordinate plane, a line goes through (0, 3) and (2, 4) and another line goes through (0, 3) and (1, 0). On a coordinate plane, a line goes through (0, 0) and (4, 3) and another line goes through (2, 5) and (4, 4).
Answer:
On a coordinate plane, a line goes through (0, 3) and (2, 4) and another line goes through (0, 3) and (0.75, 0).
This answer almost coincide with option C. I suppose there was a mistype.
Step-by-step explanation:
The system of equations is formed by:
–x + 2y = 6
4x + y = 3
In the picture attached, the solution set is shown.
The first equation goes through (0, 3) and (2, 4), as can be checked by:
–(0) + 2(3) = 6
–(2) + 2(4) = 6
The second goes through (0, 3) and (0.75, 0), as can be checked by:
4(0) + (3) = 3
4(0.75) + (0) = 3
On a coordinate plane, a line goes through (-6, 0) and (0, 3) and another line goes through (0.75, 0) and (0, 3).
Given :
The system of equation -- (-x + 2y = 6) and (4x + y = 3)
The following steps can be used in order to determine the graph represents the solution set to this system of equations:
Step 1 - Write the given system of equations.
-x + 2y = 6 --- (1)
4x + y = 3 --- (2)
Step 2 - The x-intercept of equation (1) is:
-x + 0 = 6
x = -6
Step 3 - The y-intercept of equation (1) is:
0 + 2y = 6
y = 3
Step 4 - The x-intercept of equation (2) is:
4x + 0 = 3
x = 3/4
Step 5 - The y-intercept of equation (2) is:
0 + y = 3
y = 3
On a coordinate plane, a line goes through (-6, 0) and (0, 3) and another line goes through (0.75, 0) and (0, 3).
For more information, refer to the link given below:
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The graph of g(x) = (x + 2)2 is a translation of the
graph of f(x)
by
units.
DONE
X
-2
2
4
2
h = 1
y = (2-1)
Answer:
The graph of g(x) = (x + 2)2 is a translation of the
graph of f(x) ✔ left by 2 units.
The graph of h(x) = (x − 3)2 is a translation of the
graph of f(x) ✔ right by 3 units.
100% Correct
Step-by-step explanation:
How much change will you get back from a quarter if you buy 2 ten-cent candies?
A. 1 dime
B. 1 nickel and 2 pennies
C. 2 dimes
D. 2 nickels
E, 1 nickel
Answer:
E. 1 nickel
Step-by-step explanation:
2 ten cent= 20 cent
a quarter is 25 cent
25-20=5
a nickel is 5 cent
Answer:
E.) nickle (5 cents)
Step-by-step explanation:
You give 25 cents (value of a quarter)
2 ten-cent candies is equal to 20 cents:
[tex]2*10=20\\10+10=20[/tex]
Find the difference between what you paid and the actual amount:
[tex]25-20=5[/tex]
You paid an extra 5 cents. Find the answer that has the same value as 5 cents:
A. ) 1 dime
This is wrong because a dime is worth 10 cents, not 5
B.) 1 nickel 2 pennies
this is wrong because a nickle is worth 5 cents and a penny is worthy 1 cent. Add the values, and the change would be 7 cents.
C.) 2 dimes
This is wrong because a dime is worth 10 cents, so 2 dimes would be 20 cents.
D.) 2 nickles
This is wrong because a nickle is worth 5 cents, so 2 nickles would be 10 cents.
E.) 1 nickle
This is correct because a nickle is worth 5 cents, the exact change you should receive.
:Done
The solution to an inequality is 5 ≤ = x < 9 What is the smallest value of x that will make the original inequality true? ___________.
Answer:
5 is indeed correct
Step-by-step explanation:
The smallest value of x will be 5 that will make the original inequality true.
What is Inequality?
A relation by which we can compare two or more mathematical expression is called an inequality.
Given that;
The solution to an inequality is,
⇒ 5 ≤ x < 9.
Now,
Since, The solution to an inequality is,
⇒ 5 ≤ x < 9.
Hence, The value of x = { 5, 6, 7, 8 }
Thus, The smallest value of x = 5
Therefore, The smallest value of x will be 5 that will make the original inequality true.
Learn more about the inequality visit:
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The magnitude and direction of two vectors are shown in the diagram. What is the magnitude of their
sum?
A) 5 squared
B) 8
C) 20
D) 6
The magnitude of their sum is 6 units
ResultantThe formula for calculating the resultant vector is given as:
[tex]V=\sqrt{(\sum V_x)^2+(\sum V_y)^2}[/tex]From the given figure, the resultant is calculated as:
[tex]V=\sqrt{[(4cos45)+(2sin45)]^2+((4sin45)+2cos45)^2} \\V=\sqrt{[2\sqrt{2}+\sqrt{2}]^2 +[2\sqrt{2}+\sqrt{2}}]^2\\V=\sqrt{18+18} \\V= 6 units[/tex]
Hence the magnitude of their sum is 6 units
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If a vertical plane sliced a sphere, what would be the 2-D cross section?
square
rectangle
circle
triangle
I WILL GIVE BRAINLIEST
Solve the equation:
5x + 65 = 25
What is the value of x
Answer: -8
Step-by-step explanation:
Answer:
x = -8
Step-by-step explanation:
If you multiply -8 by 5 you get -40. Then if you add 65 to -40 you get 25.
Hope this helps.
The teacher concluded that there is a correlation between having a computer and having a phone. Do you agree with the teacher? Explain your thinking. (giving brainliest to fastest response)
Answer:
yes I agree with teacher
Step-by-step explanation:
I I think this because 1 people that have a phone and a computer are the highest group and two becauseit seems that most of the class has a phone it also seems that most of the class has a computer
A Ferris wheel has a radius of 20 feet and is rotating at a rate of 4 revolutions per minute. When t = 0 (measured in seconds), a chair at the lowest point on the wheel is 6 feet above the ground. Write a model for the height, h, of the chair as a function of time.
Answer:
the model for the height, h, of the chair at a function of time is [tex]y = -20 \times sin (\frac{2\pi }{15} \times t + \frac{\pi }{2} ) + 26[/tex]
Step-by-step explanation:
To answer the question, we note that the height of the Ferris will varies proportionately to the angle of rotation, hence we can model the height according to he sine function as follows;
y = a·sin(b·x+c) + d
Where: a = Amplitude = Maximum displacement = r = 20 ft
or [tex]a = \frac{maximum - minimum}{2} = \frac{44 - 4}{2} = 20 \, ft[/tex]
The period, [tex]\frac{2\pi }{b}[/tex] = Time for one complete revolution, for a Ferris wheel making 4 revolutions per minute, we have
Period = 1 minute/4 = 15 seconds
Therefore, [tex]\frac{2\pi }{b}[/tex] = 15 seconds or [tex](b =\frac{2\pi }{15})[/tex]
d = the vertical shift is given by minimum + amplitude or maximum - amplitude = 6 + 20 = 26 ft
c = Phase shift since we want the chair to be at the minimum at t = 0 we put c = π/2
x = Independent variable, which in the case of the question is time, t
Therefore, the model for the height, h, of the chair at a function of time is as follows
[tex]y = -20 \times sin (\frac{2\pi }{15} \times t + \frac{\pi }{2} ) + 26[/tex]
i.e. y = -20×sin(2π/15 + π/2) + 26.
Final answer:
To model the height of the chair as a function of time on a Ferris wheel, use the equation h(t) = 20 × cos((8π/60)t) + 6, where t is in seconds and h(t) is in feet.
Explanation:
To write a model for the height, h, of the chair as a function of time, t, for a Ferris wheel with a radius of 20 feet and a rotation rate of 4 revolutions per minute, we must consider the motion of the wheel. Since the Ferris wheel completes one rotation in 15 seconds (60 seconds/4 minutes), the chair's height above the ground will depend on the cosine of the angular position of the chair. Including the initial condition of the chair being 6 feet above the ground at its lowest point, the mathematical model will be:
h(t) = 20 × cos(ωt + ϕ) + 6
where angular velocity ω is calculated from the rotation rate (4 revolutions per minute) and phase shift ϕ accounts for the initial position. Since t = 0 corresponds to the lowest point, ϕ is 0 degrees or 0 radians (cos(0) = 1). The angular velocity in radians per second is:
ω = 2π × rotation rate = 2π × 4 / 60 = 8π/60 rad/s
Thus, the final equation for the height of the chair as a function of time is:
h(t) = 20 × cos((8π/60)t) + 6
where t is in seconds and h(t) is in feet.
What is the value of x?
(Srº
The value of x of the missing angles is: 45
How to find the missing angle?
A linear pair of angles is a pair of adjacent angles formed when two lines intersect. The two angles of a linear pair are always supplementary, which means their measures add up to 180 degrees.
Some properties of linear pairs of angles include:
The angles in a linear pair are adjacent.
Their non-common arms are opposite rays and form a straight line.
They together form a straight angle.
Two angles forming a linear pair have a common vertex and a common arm. Their non-common sides are opposite rays that form a line.
Thus:
3x + x = 180
4x = 180
x = 180/4
x = 45
(brainliest)Armando found the volume of the figure below by using the steps shown. A rectangular prism with a length of 18 inches, width of 5 inches, and height of 8 inches. A triangular prism with a base of 18 inches and height of 6 inches. The prism has a height of 5 inches. Total Volume = Volume of rectangular prism + volume of triangular prism = 5 (8) (18) + one-half (6) (18) (8) = 720 + 432 = 1,152 cubic inches. What mistake, if any, did Armando make? Armando determined the volume correctly. Armando used the wrong formula for the total volume. Armando used the wrong dimensions for the triangular prism. Armando did not apply the order of operations correctly.
Answer: Armando used the wrong dimensions for the triangular prism.
Step-by-step explanation:
Hi, to answer this question we have to analyze Armando’s work.
Total Volume = Volume of rectangular prism + volume of triangular prism
Total Volume = 5 (8) (18) + one-half (6) (18) (8)
Total Volume= 720 + 432
Total volume = 1,152 cubic inches.
He made a mistake in the second step, where used h=8 for the triangular prism instead of h= 5 . (h=height)
The correct way to solve this is.
Total Volume = 5 (8) (18) + one-half (6) (18) (5)
Total Volume= 720 + 270
Total volume = 990 cubic inches.
Answer:
Armando used the wrong dimensions for the triangular prism.
Step-by-step explanation:
if someone was born in 2018 September 12th how old will they be in 2082?
Answer: 64 years old
Step-by-step explanation:You subtract 2082 by 2018 to get the sum of 64
Answer:
64/63
Step-by-step explanation:
It depends on what day it is in 2082 however the calculation should be simple...
2082-2018=64
If it is before September 12th in 2082, then they would be 63 because their 64th birthday would be on September 12th!
Hope this helps!
Can someone help me again on this.