9514 1404 393
Answer:
32.5 ft
Step-by-step explanation:
The length of the side opposite the given angle is found using the sine relation:
Sin = Opposite/Hypotenuse
height on building = (33 ft)·sin(80°) ≈ 32.5 ft
The ladder reaches about 32.5 feet up the side of the building.
_____
Additional comment
The maximum angle compliant with OSHA safety rules is 75.5°.
What is a Proportional Relationship?
1. One apple costs 25¢. Determine each cost.
a) 2 apples
b) 3 apples
c) 4 apples
d) 6 apples
e) 9 apples
f) 12 apples
li writes the expression “half of the sum of 9 and a number.” Write an algebraic expression that is equivalent to Ali’s expression. Write a second algebraic expression that is different from, but equivalent to, your first expression. Respond in the space provided.
Answer:
Step-by-step explanation:
.......
Answer:
The expression will be : (x+9) /2
What is algebraic expression?An algebraic expression is an expression built up from integer constants , variables , and the algebraic operations.
Let us take the number to be : x
Now, ( half of the sum of 9 and a number ) will be : (x+9)/2
Dividing x and 9 with 2 we get,
the second expression which is different but equivalent to first will be :
=0.5 x + 4.5
Learn more about algebraic expression :
https://brainly.com/question/953809?referrer=searchResults
#SPJ2
A city built a new subway system in 2001. This graph shows the daily number of mass transit trips and the daily number of car trips people took in that city through 2007. What does the data show?
A) As the number of mass transit trips increase, so do the number of car trips.
B) The number of mass transit trips first exceeded the number of car trips in 2005.
C) The number of car trips has decreased every year since the subway system was built.
D)According to the data, the number of mass transit trips and the number of car trips do not appear to be related.
Answer:
C.
Step-by-step explanation:
This is the correct answer, because ever since the transit system was made, car rides went down and down.
A textbook company states that the average time a student needs to take a quiz from its book is 30 minutes with a standard deviation of 3 minutes. A teacher using the book is not sure that this is correct for her classes and wants to check. She collects data on 10 random students and finds that the average time to take the quiz was only 25 minutes. As a result, the teacher performs a two-tailed hypothesis test with a significance level of 5%. Which conclusion is valid based on the results of the test
Answer:
We conclude that her students, on average, do not take 30 minutes on the quiz, contrary to what the textbook company states.
Step-by-step explanation:
We are given;
Population mean; μ = 30 minutes
Population standard deviation; σ = 3 minutes
Sample size; n = 10
Sample mean; x¯ = 25
Significance level = 5% = 0.05
Let's define the hypotheses;
Null hypothesis; H0: μ = 30
Alternative hypothesis: Ha: μ ≠ 30
Let's find the test statistic;
z = (x¯ - μ)/(σ/√n)
z = (25 - 30)/(3/√10)
z = -5.27
From online p-value from z-score calculator attached using, z = -5.27, significance level = 0.05, two tailed hypothesis, we have;
p < 0.00001
This is less than the significance level, and so we will reject the null hypothesis and conclude that Her students, on average, do not take 30 minutes on the quiz, contrary to what the textbook company stated.
Answer:
A. Her students, on average, do not take 30 minutes on the quiz, contrary to what the textbook company stated.
plz help. need it done in 2 mins
Question 3
Write the rational number as a decimal.
Answer: -2.2
Step-by-step explanation:
-10 is the most possible that can be divided by 5, resulting in -2.
The leftover 1 is divided by 5, resulting in .2.
The decimal ends up being -2.2.
Answer:
-2.2 or -1.2
Step-by-step explanation:
When you want to write a decimal as a fraction, you simply divide the numerator with the denominator. So when you divide -11 by five that would be a -2.2. Or if it is -1 1/5 the answer would be -1.2. I cant really tell what that number is.
Which expressions have products less than 3 3/5?
(Select all that apply)
The diameter of a spherical basketball is 10 inches.
What is the volume of the basketball2
Give the exact solution.
Volume
I NEED THE ANSWER FAST HELPP PLEASE
Answer:
Step-by-step explanation:
Rounded volume: 524 cubic inches.
Step-by-step solution:
The formula for the volume of a sphere is:
Where r is the radius of the sphere.
The radius is half the diameter, therefore it is r=10/2=5
We plug it into the formula and we get:
Then we get:
If we do it in our calculator we get 523.599 that rounded to the nearest whole is 524 cubic inches .
Use your answer from Part I to find the slope of a line going through each set of points. Then
describe the line as positive, negative, zero, or undefined. Show your work and explain your
answer.
A. (5, 7) and (-4,-2)
B. (1, 3) and (1, -10)
Answer:
Step-by-step explanation:
to find the slope of a line that passes for two given points we can use this formula (y2-y1)/(x2-x1). x and y inidcate the coordinates of the two points.
A (-2-7)/(-4-5) = (-9)/-9 = 1 (m is positive)
B (-10-3)/(1-1)) = the denominator is equal to zero, so the division is impossibile. This mean that m is undefined and the line is parallel to y axis
PLZZZZ HELP THIS IS WORTH 40 POINTS PLZZZ
I’ll give extra points!!!
Answer:
1) 15
2) 10
3) 11
4) -4
5) -8
6) 12
7) 14
8) -6
Step-by-step explanation:
Substitute the values thats all lol, if u need a more detailed explanation just comment <3
A small airplane is approaching a stationary crowd at 100 meters per second. The engine of the plane is emitting a sound of 485 Hz. What is the apparent frequency as it approaches the crowd?
Answer:
695.87 Hz
Step-by-step explanation:
Using the equation for Doppler shift, the frequency of the apparent sound is f' = f(v ± v')/(v ± v") where f = frequency of sound emitted by the plane's engine = 485 Hz, v = speed of sound in air = 330 m/s, v' = speed of crowd(detector) = 0 m/s (since the crowd are stationary) and v" = speed of plane(source) = 100 m/s
So, f' = f(v ± v')/(v ± v")
f' = f(v ± 0)/(v ± v")
f' = fv/(v ± v")
Since the source moves towards the detector, we use a minus a minus sign in the denominator to get a shift upwards in frequency since a shift upwards means the objects are moving closer to each other.
So,
f' = fv/(v - v")
Substituting the values of the variables into the equation, we have
f' = 485 Hz × 330 m/s/(330 m/s - 100 m/s)
f' = 160050 Hzm/s ÷ 230 m/s
f' = 695.87 Hz
What is 58 x 564 please tell me
Answer:
that is the answer 32,712
Step-by-step explanation:
your welcome.
sorry I times it by 54 instead of 58
Please help this is really hard
Answer:
The new pic will be like this , i think .
Step-by-step explanation:
Good night ^*^
(3 + 4i) + (8 + 2i)
Answer choices
11 - 6i
5 + 12i
7 + 10i
11 + 6i
Answer:
11+6i
Step-by-step explanation:
vectors addition
(3+8) +(4i+2i)
11+6i
Can you help me solve this pls
Answer:
use the Pythagorean therm = choice D
Step-by-step explanation:
find the square root of 3(squared) + 4(squared) = 5
then the square root of 5(square) + 12(squared) = 13
What is the slope and equation of a line parallel to the y-axis passing through point (-4,3)
Answer:
-4 is x and 3 is y
Step-by-step explanation:
HELP PLEASE!!!!!!!!!!!!!!!!!!!!
Answer:
The answer is A.) y=-500x+22,000
Graph the equation by translating y = |x|.
y = |x – 3| – 4
Graph b
Graph a
Graph d
Graph c
Answer:
graph d it's your answer plz make me brainy least
Answer:
d
Step-by-step explanation:
Amy is a local photographer. She charges $225 for a session and $15 for every print the customer
orders. Which of the equations below could represent the amount a photo session could cost?
A. y = 15x
B. y = 225x + 15
C. y = 225x
D. y = 15x + 225
Find the area of the figure.
14 m
5 m
2 m
16 m
Jimrgrant or Anyone solve this PLZZZZZZ
Answer:
it is B and D
Step-by-step explanation:
mark brainliest or 5 stars and heart
correct me if im wrong
Answer:
B and A
Step-by-step explanation:
Calculate distance d using the distance formula
d = [tex]\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2 }[/tex]
(1) with (x₁, y₁ ) = (0, 0) and (x₂, y₂ ) = (6, 8)
d = [tex]\sqrt{6-0)^2+(8-0)^2}[/tex]
= √(6² + 8²)
= √ (36 + 64)
= √ 100
= 10 → B
(2)
Using (x₁, y₁ ) = (- 5, 3) and (x₂, y₂ ) = (3, 15)
d = √ (3 + 5)² + (15 - 3)²
= √ 8² + 12²
= √ 64 + 144
= √ 208
≈ 14.4 ( to the nearest tenth ) → A
You cannot evaluate the square root of a __________________________. a. Positive number b. Negative number c. Zero d. Variable
Answer:
B, a negative number. negative numbers can't have square roots
Step-by-step explanation:
Hope this helps :)
PLSS HELPPP ME IM BEGGING ITS FOR A TEST DUE IN 5 MINS!!!!!!!!!!!!!!!!!!
Answer:
d
Step-by-step explanation:
What’s the answer to this?!!!!!
Step-by-step explanation:
here
Write the word sentence as an inequality.
A number b is at least −3.
Answer:
b >= -3
The symbol > = represents "greater than OR equal to".
I don’t know if this is correct !!!!!!!!!! Please answer correctly !!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!!
Answer:
The first one is correct. But why can't they be proven congruent
Step-by-step explanation:
At a children's archery camp, the percentage of target hits at different distances from the target for several campers were recorded.
The data is shown in the scatter plot below.
у
100).
80
60
.
Target Hits (%)
40
20
0 4
8 12 16 20
Distance from Target (ft)
Which interpretation can be made from this data?
OA.
ОВ.
There is a positive association between the distance from the target and the percentage of target hits.
There is a negative association between the distance from the target and the percentage of target hits.
There is no association between the distance from the target and the percentage of target hits.
OC.
OD. There is both a positive and a negative association between the distance from the target and the percentage of target
hits.
Answer:
its B
Step-by-step explanation:
The difference between three times a number and 6 is 33.
I need to write an equation for this someone help!
Answer:
Step-by-step explanation:
3x-6 = 33
= 3x = 33 + 6
= 3x = 39
x = 13
What is the value of the function
g(t) = 2(t-3)-4 for the input value t= 6?
Answer:
2
Step-by-step explanation:
Replace t with 6:
g(t) = 2(t-3)-4 becomes g(6) = 2(6-3)-4 = 2(3) - 4 = 6 - 4 = 2
4x - 35 = 234
Solve for 'x'.
Answer:
X= 67.25
Step-by-step explanation:
4x-35=234
Add 35 to both sides
4x= 269
Divide both sides by 4
X= 67.25
Answer:
x = 67,25
Step-by-step explanation:
Here it is given that,
x is an unknown to know. Since we are intelligent students, we will bring the unknowns to the left limb, and the numbers known in the right limb.[tex]\:[/tex]
We can write this matematically as,
[tex]\rightarrow 4x - 35 =234[/tex]
Move the constant to the right,
[tex]\rightarrow 4x =234 + 35[/tex]
Add the numbers,
[tex]\rightarrow 4x =269[/tex]
Divide both sides of the equation by 4,
[tex]\rightarrow x =\frac{269}{4}[/tex]
We determine the value of x,
[tex]\rightarrow \underline {x=67,25}[/tex]