Answer:
30/75 = 2/5 or 2:5
Hope this helps!!!
A boat is heading towards a lighthouse, whose beacon-light is 144 feet above the water. From point AA, the boat’s crew measures the angle of elevation to the beacon, 9^{\circ} ∘ , before they draw closer. They measure the angle of elevation a second time from point BB at some later time to be 14^{\circ} ∘ . Find the distance from point AA to point BB. Round your answer to the nearest foot if necessary.
Using the slope concept, the distance from point AA to point BB ≅ 360 feet.
What is a slope?The slope is given by the vertical change divided by the horizontal change.
It's also the tangent of the angle of depression.
We can get, the vertical change is of 144 feet.
At point A, the angle is of 9º, while the horizontal position is of [tex]x_{A}[/tex] ,
Then, we can write,
tan 9º = [tex]\frac{144}{x_{A} }[/tex]
[tex]x_{A}[/tex] = 144/tan 9º
Hence, tan 9º = 0.15
[tex]x_{A} =[/tex] 144/0.15
[tex]x_{A}[/tex] = 960
At point A, the angle is of 14º, while the horizontal position is of [tex]x_{B}[/tex] ,
Then, we can write,
[tex]x_{B}[/tex] = 144/tan 14º
Hence, tan 14º = 0.24
[tex]x_{B}[/tex] = 144/0.24
[tex]x_{B}[/tex] = 600
So, the distance in feet is of:
d = [tex]x_{A} -x_{B}[/tex]
d = 960 - 600
d = 360
d ≅ 360
Therefore,
A boat is heading towards a lighthouse, then the distance from point AA to point BB ≅ 360 feet.
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1. Use the slope to find the speed of the object in the graph below.252015-distance (miles)105-150(1.39, 11.6)23time (hour)
Notice that the slope of the line is equal to the speed
[tex]\text{Slope (speed) = }\frac{y_2-y_1}{x_2-x_1}\text{ = }\frac{20\text{ -10}}{4\text{ - 2}}\text{ =}\frac{10}{2}=5\text{miles / hour}[/tex]hence, the speed = 5 miles / hour
help meeeeeeeeeeeeee!!!!!!!!!!!!!!!!!!
Answer:
[tex]\frac{h^6}{h^8}[/tex]
Step-by-step explanation:
1. For now, let's leave the [tex]g^{-6}[/tex] to the side and just worry about the [tex]\frac{h^8}{h^2}[/tex].
2. When you apply the exponent rule you should have learned in class, we know that when you divide two bases with exponents, the exponents subtract. So, you can subtract 8 - 2, and then the greater digit's place in the fraction stays. So, since [tex]h^8\\[/tex] is the greater number (and it's in the numerator), you put the [tex]h^6[/tex] in the numerator as well.
please please please help me I’m going to die
when running a line, in a right-triangle, from the 90° angle perpendicular to its opposite side, we will end up with three similar triangles, one Small, one Medium and a containing Large one. Check the picture below.
[tex]\cfrac{x}{13}~~ = ~~\cfrac{11}{x}\implies x^2=(13)(11)\implies x^2=143\implies x=\sqrt{143}[/tex]
What exponent is understood on the base "x" in the following expression?
xy^3
What is the exponent of "x"?
The exponent that is understood on the base x in the given expression is; 1
How to interpret Exponents?The exponent of a number tells us how many times to use the number in a multiplication. Exponents are also called Powers or Indices. For example in the exponent form ab^(x), we can say that;
The base is a and its' exponent is 1.
Applying the above to our question gives us;
If the exponent form is xy^3, then we can say that;
The base is x.
We can see that there is no exponent attached to x and as such we will use 1 as 1 will still give us the value of x.
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Solve the following system of equations
5x-2y=4
8x+5y=-10
[tex]5x - 2y = 4 \\ 5x = 4 + 2y \\ \frac{5x}{5} = \frac{4 + 2y}{5} \\ x = \frac{4 + 2y}{5} ......(3)equation[/tex]
NOTE I AM SOLVING BY SUBSTITUTION
[tex]8( \frac{4 + 2y}{5} ) + 5y = - 10 \\ \frac{32 + 16y}{5 } + 5 y = - 10 \\ \frac{32 + 16y}{5} (5) + 5y(5) = - 10(5) \\ 32 + 16y + 25y = - 50 \\ 41y = - 50 - 32 \\ \\ \\ \\ 41y = - 82 \\ \frac{ - 41y}{41} = \frac{ - 82}{41} \\ y = - 2[/tex]
[tex]x = \frac{4 + 2( - 2)}{5} \\ x = \frac{4 - 4}{5} \\ x = \frac{0}{5} \\ x = 0[/tex]
ATTACHED IS THE SOLUTION
Answer: (0,-2)
Step-by-step explanation:
[tex]\displaystyle\\\left \{ {{5x-2y=4\ \ \ \ \ (1)} \atop {8x+5y=-10\ \ (2)}} \right.[/tex]
Multiply equation (1) by 5, and equation (2) by 2:
[tex]\displaystyle\\\left \{ {{25x-10y=20\ \ \ \ (3)} \atop {16x+10y=-20\ \ (4)}} \right.[/tex]
Add equations (3) and (4):
[tex]41x=0[/tex]
Divide both parts of the equation by 41:
[tex]x=0[/tex]
Let's substitute the value of x into equation (2):
[tex]8(0)+5y=-10\\0+5y=-10\\5y=-10[/tex]
Divide both parts of the equation by 5:
[tex]y=-2[/tex]
Thus, (0,-2)
out of 457 applicants for a job, 271 have over 5 years of experience and 75 have over 5 years of experience and have a graduate degree. step 2 of 2 : consider that 116 of the applicants have graduate degrees. what is the probability that a randomly chosen applicant has over 5 years of experience, given that the applicant has a graduate degree? enter a fraction or round your answer to 4 decimal places, if necessary.
The probability that a randomly chosen applicant has over 5 years of experience is 0.2768.
What is probability?It should be noted that probability simply has to do with the likelihood that an event will happen.
From the information, out of 457 applicants for a job, 271 have over 5 years of experience and 75 have over 5 years of experience.
Therefore, the probability that a randomly chosen applicant has over 5 years of experience will be:
= Number of graduate over 5 years / Number of people over 5 years experience
= 75 / 271
= 0.2768
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What is the value of the expression -38-16-(-23)?
O-31
O-45
O-54
O-77
Answer:
-31
Step-by-step explanation:
[tex]-38-16-(-23) \\ \\ =-38-16+23 \\ \\ =-54+23 \\ \\ =-31[/tex]
Find the value of the object round to the nearest hundredth
Answer:
8,377.58 [tex]mi^{3}[/tex]
Step-by-step explanation:
To solve for the volume of a right circular cone like the one in the picture, you use [tex]\pi[/tex][tex]r^{2}[/tex][tex]\frac{h}{3}[/tex].
Plug in the radius and height to get [tex]\pi[/tex][tex]20^{2}[/tex][tex]\frac{20}{3}[/tex].
Then solve (and round to the nearest hundredth) and you should get 8,377.58.
how many solutions does the expression |x + 8| + 5 = 2 have??
Answer:
x= -11
It only has one solution.
Step-by-step explanation:
HELP ASAP!!!
i have to reduce the fractions to this equation
(ii) Find p if 3^p =
3 square root 9/3
We must know the following exponent rules to help us solve this question:
[tex]a^\frac{m}{n}=\sqrt[n]{a^m}[/tex][tex]\dfrac{a^m}{a^n}=a^{m-n}[/tex][tex](a^m)^n=a^{mn}[/tex][tex]a^m=a^n, \therefore m=n[/tex]Solving the Question
[tex]3^p=\dfrac{\sqrt[3]{9}}{3}[/tex]
⇒ Rewrite [tex]\sqrt[3]{9}[/tex] as [tex]9^\frac{1}{3}[/tex]:
[tex]3^p=\dfrac{(3^2)^\frac{1}{3}}{3}[/tex]
⇒ Multiply:
[tex]3^p=\dfrac{3^\frac{2}{3}}{3}[/tex]
⇒ Subtract:
[tex]3^p=3^{\frac{2}{3}-1}[/tex]
[tex]p=\dfrac{2}{3}-1\\\\p=-\dfrac{1}{3}[/tex]
Answer[tex]p=-\dfrac{1}{3}[/tex]
Given that cosA=1/4 where 270°
Angle A is located in the third quadrant and solved to be a value of 255.522 degrees.
What is quadrant?A quadrant refers to fourth division. In a circle, a quadrant represents a quarter of a circle.
In angle calculations, there are 4 quadrants. The first quadrant is between angles 0 to 90 degrees. The second quadrant is between angles 90 to 180 degrees. The third quadrant is between angles 180 to 270 degrees. The fourth quadrant is between 270 to 360 degrees.
The each quadrant is at 90 degrees interval. and the in angle calculations, the rotation is in anticlockwise direction
How to find angle Acos A = 1/4
where 270°
270 degrees represent the third quadrant. Hence angle A is in the third quadrant
solving for angle A
let cos a = 1/4
a = arc cos ( 1/4 )
a = 75.522 degrees ( in first quadrant )
A = a + 180 degrees
A = 75.522 degrees + 180 degrees
A = 255.522 degrees
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Find the value of x
(A) x= 135
(B) x= 25
(C) x= 35
(D) x= 90
THE SUM OF THE INNER ANGLES IS 180°
[tex](x - 7) + (2x - 8) + 90 = 180 \\ x - 7 + 2x - 8 + 90 = 180 \\ x + 2x = 180 + 7 + 8 - 90 \\ 3x = 105 \\ \frac{3x}{3} = \frac{105}{3} \\ x = 35[/tex]
THEREFORE x=35°OPTION C IS THE RIGHT ANSWER.
I need help with this math question. Can someone help me? Thanks!
Answer: Eiko
Step-by-step explanation:
Eiko has the shortest time.
Consider the matrices.
A =
[-1 7 -2 -6 2 -3 -1 10]
B = [- 2 -3 1 2]
C = [-6 -8]
D = [0 0 0 0]
E = [[-8 -2 1 4 3 9 2 -7]
Operation is defined.
What operations are defined for these matrices?
Drag the operation to the boxes to correctly complete the table.
Operation is defined
Operation is not defined.
E-A
A+C
B+D
C-B
Remove all perfect squares from inside the square root sqrt(12)
Answer:
Step-by-step explanation:
Find the value of x show your steps
Round 369 962 to the nearest hundred.
Answer:
369,962
Step-by-step explanation:
If the rounding digit is 0, 1, 2, 3, or 4, drop all the digits to the right of it
If the rounding digit is 5, 6, 7, 8, or 9, add one to the rounding digit and drop all digits to the right of it
The heights of women aged 20 to 29 follow approximately the N(64, 2.56) distribution. Men the same age have heights distributed as N(69.3, 2.65). What percent of young men are shorter than the mean height of young women?
The percent of young men that are shorter than the mean height of young women is 2.5%.
What is a normal distribution?A data set with a normal distribution has the majority of its values clustered in the middle of the range and the remaining values tapering off symmetrically toward either end.
A continuous probability distribution for a real-valued random variable is known as a "normal distribution" in statistics.
Based on the information, the percentage will be calculated thus:
Z = (69.3 - 64) / 2.7 = 1.9630
So P(Z>1.96)= 1-P(Z<1.96)
(check standard normal table)
= 1-0.975
= 0.025
= 2.5%
The percentage is 2.5%.
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The length of an island is decreasing at the rate of 17 inches per year. how long will it take for the change in the length of the island to be 255 inches?
Given,
Decrement of 17 inches takes 1 year.
So, Decrement of 1 inches takes [tex]\frac{1}{17}[/tex] year.
therefore, decrement of 255 inches will take [tex]\frac{255}{17}[/tex] years, which is, 15 years.
So, the answer is 15 years.
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1. A train travels at 80 miles per hour. What equation that compares the time (t) with the distance (d)?
d = 80t
t = 80d
t = d + 80
d = t + 80
the answer is T becouse T is the time which is what you get when distance is divided by 80 mph
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5. In which of the following ways are linear systems similar to quadratic systems? Select all that apply. (3 poir
Both can be solved by graphing.
Both can have two solutions.
O Both can be solved by substitution.
O Both have solutions at the points of inters
The ways in which the linear systems are similar to quadratic systems includes:
A) Both can be solved by graphingC) Both can be solved by substitutionD) Both have solutions at the points of intersection.What are linear and quadratic system?The linear system means the model based on the use of a linear operator and, they exhibit features and properties that are much simpler than the nonlinear case. The quadratic system of equations consists of only quadratic equations.
The linear & quadratic systems are solved by graphing and substitution. In the linear systems, we get the lines and in quadratic systems, we get curves. In conclusion, the point of intersection of two lines or curves are the solutions of the respectively system.
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Write an equation that represents the line.
Use exact numbers.
Answer:
y = (3/2)x + 3
Step-by-step explanation:
Point 1: (0, 3) Point: (2, 6)
(x₁, y₁) (x₂, y₂)
y₂ - y₁ 6 - 3 3
m = ------------ = ------------ = --------
x₂ - x₁ 2 - 0 2
y - y₁ = m(x - x₁)
y - 3 = (3/2)(x - 0)
y - 3 = (3/2)x
+3 +3
------------------------
y = (3/2)x + 3
I hope this helps!
A line has equation y=-½x−3
Find the gradient.
Answer:
gradient is 1/2 = 0.5
Step-by-step explanation:
y= 1/2 x−3
Swap sides so that all variable terms are on the left hand side.
1/2 x−3=y
Add 3 to both sides.
1/2 x=y+3
Multiply both sides by 2.
1/2 x = 1/2 y+3
Dividing by 1/2 undoes the multiplication by 1/2
x= 1/2 y+3
Divide y+3 by 1/2 by multiplying y+3 by the reciprocal of 1/2
.
x=2y+6
Misty estimated the product of 99 and 2.4 to be 240. She used to estimate.
Answer:
Not 100% sure what it's asking but if it's asking what number she used to estimate the 240, she used 100 because it's one-off 99. The actual number would be 237.6
Step-by-step explanation:
Help me please I’ll give lots of points
Equivalent equations (acceptable moves)
(1)
4(x+3)=32
x+3 = 8
(2)
[tex]\frac{(9x+4)}{2} =5\\\\9x+4=10[/tex]
(3)
x- 7+ 3x=25
4x-7=25
Not equivalent (unacceptable moves)
(1)
2(x+5) = 10
2x+5 = 5( 20 is wrong)
(2)
2x+4=22
2x= 22-4= 18 (26 is wrong)
(3)
[tex]\frac{(6x-1)}{3} =27\\\\6x-1=81[/tex] (9 is wrong)
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Draw a graph that
a. Has no x-intercepts
b. Has one y-intercept of (0,-2)
c. Is continuous
d. Is not a function
Answer:the answer is b
Step-by-step explanation:
Determine the bonus based upon the formula 2 weeks' salary plus 1 percent commission: annual salary: $48,000.00 yearly sales: $76,000.00
The bonus based upon the given formula is $2606.15 approximately
Given,
Annual salary = $48,000
Yearly sales = $76,000
Bonus is given according to the formula:
2 weeks salary + 1 percentage commission
Here,
Annual salary is given as $48,000
We have to find the weekly salary:
There is 52 weeks in a year.
So, salary for one week = Annual salary / number of weeks = 48000/52 = $923.077
Now, salary for two weeks = 923.077 × 2 = $1846.154
Rate of annual commission is 1%
The commission amount:
1% of yearly sales = 1% of 76000 = (1/100) × 76000 = $760
So,
The bonus amount = 2 weeks salary + 1 percentage commission
The bonus amount = 1846.154 + 760
The bonus amount = 2606.154
Therefore, the bonus given based upon the given formula is $2606.154
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