Answer:
Part A
71°
Part B
The ladder is been used safely
Step-by-step explanation:
Part A
We solve the above question using Trigonometric function of Cosine
cos x = Adjacent/Hypotenuse
Adjacent = The distance between the house and the bottom of the ladder = 4 feet
Hypotenuse = Length of the ladder = 12 feet
x = Angle
Hence:
cos x = 4/12
cos x = 1/3
x = arc cos (1/3)
x = 70.528779366°
Approximately to the nearest degree
= 71°
Part B
According to the manufacturer, if the angle the ladder forms with the ground, x, is between 70° and 75°, then it meets safety standards. Is this ladder being used safely?
Angle x = 71°
Therefore, the ladder is been used safely
Mark was thinking of a number mark halves the number and gets an answer of 53.2 form an equations with x from the information
Answer: The number is 106.4
Step-by-step explanation:
Let the number be x
Mar halves the number becomes = x x 1/2 to get 53.2
The equation to solve this problem is x/ 2 = 53.2
Such that to find x
x/2= 53.2
x = 2 x 53.2= 106.4
The number is 106.4
Find the greatest common factor of 7 and 21.
Answer: 7
Step-by-step explanation:
Factors of 7 are, 1, and 7. The factors of 21 are, 1, 3, 7, and 21, making 7 the gcf.
Petra jogs 6 miles in 54 min. Fine the unit rate in minutes per mile
Answer:
the answer is 9
Step-by-step explanation:
because when you divide 54 by 6 you get 9
Find the solutions
x3 + 7x2 – X – 7 = 0
Answer:
x=−1 or x=1 or x=−7
Step-by-step explanation:
x3+7x2−x−7=0
Step 1: Factor left side of equation.
(x+1)(x−1)(x+7)=0
Step 2: Set factors equal to 0.
x+1=0 or x−1=0 or x+7=0
x=−1 or x=1 or x=−7
Answer:
x=-7,-1,1
Step-by-step explanation:
Which fractions have a least common denominator of 12? 1 A.2 and 3 2 B. 1 5 and 2 6 1 C. 5 and 9 5 1 D.2 and 3 4
Find the mean of the data.
Length (cm) of fish in tank:
7, 2, 1, 4, 5, 2, 3
Round to the nearest tenth.
Mean: [?] cm
Answer: 3.4cm
Step-by-step explanation:
Total cm = 24
Number of fish = 7
24/7 = 3.4
does 5 ÷ 1/4 equal 1/20 true or false?
Answer:
Step-by-step explanation:
No false because 5 ÷ 1/4 = 1.25 and 1/20 = 0.05
Answer:
False
Step-by-step explanation:
a sculptor needs to lift a peice of marble its a cuboid with dimentions 1m by 0.6m by 0.3 m, marble has a density of 2.7g/cm cubed
Answer:
486 kg
Step-by-step explanation:
please help this is due tomorrow
Answer :
880 (hope this helps)
Step-by-step explanation:
l.w.h.
the length is 10
i geuss the wit is 11
and the hieght is 8
multiple in order.
I need help finding the quotients
Answer:
24÷-6=-4
-15÷0.3=-50
-4+-20=-24
2/5÷3/4=0.5333
Step-by-step explanation:
Thats all i can get sorry :<
I hope it helps and hope its right
Help ME fast and pls
Answer:
the first one is 8 and 9
the second one is 13 and 14
Step-by-step explanation:
8^2 is equal to the square root of 64 and 9^2 is equal to the square root of 81.
13^2 is equal to the square root of 169 and 14^2 is equal to the square root of 196.
hope this helps and is correct.
PLZ HELP ME WITH THIS QUESTION!
Answer:
the answer is C
Step-by-step explanation:
please mark brainlist
Answer:
D.-26
Step-by-step explanation:
-26+12=-14 Hope this helps :)
An equilateral triangle has a perimeter of 42. What is it's height?
Answer:
Given that: The perimeter of the equilateral triangle is 42 inches. Side of the triangle=Perimeter/3=42/3=14 inches. The height of the triangle is 12 inches
Step-by-step explanation:
12 inches hope it helps
If y = 6, then what is the value of 9 x y?
O 15
O 25
0 44
O 54
Answer: 54
Step-by-step explanation:
Answer:
54
Step-by-step explanation:
9x6 = 54
PLEASE HELP
Is this graph proportional or non
Group of answer choices
Proportional
non-proportional
Answer:
I dont see a picture-
Step-by-step explanation:
2) Ellis thinks of a number.
He multiplies it by 4 and then subtracts 10
The result is 14
What number did Ellis think of?
Answer:
6
Step-by-step explanation:
6*4-10=14
Please guys this is easy, I need help ASAP! (Giving brainliest)!
Answer:
4a. 13
4b. -4
Step-by-step explanation:
2x-6/5 = 4 (Muti each side by 5)
2x-6 = 20
2x = 26 (Divide each side by 2)
x = 13
7- 2x/4 = 9
-2x/4 = 2 (Muti each side by 4)
-2x = 8 (Divide each side by -2)
x = -4
Pls answer b and c for my brother
Answer:
B and C
Step-by-step explanation:
Answer:
this was hard
Step-by-step explanation:
1b. 7 1/2
2b. 9 3/4
3b. 6 1/2
4b. 2 2/3
5b. 3 1/3
6b. 9 3/4
7b. 8 6/7
8b. 5 2/3
9b. 3 3/5
10b. 28
1c. 8 4/5
2c. 8 2/3
3c. 5 2/3
4c. 2 1/3
5c. 5 1/2
6c. 2 3/7
7c. 7 4/5
8c. 8 1/2
9c. 2 3/4
10c. 122
What are the zeros of this function?
Answer:
4 and 6
Step-by-step explanation:
These are the points in which y=0
John went to a friend’s house to spend his free time in an evening. Which unit of measure should be used to find the distance between the two houses?
A. milliliters
B. tons
C. kilograms
D. miles
Answer:
miles
Step-by-step explanation:
Answer:
I think Its D.
Step-by-step explanation:
Its not A because milliliters measures with graduated cylinder and stuff like that.
It's not B because tons is capacity.
Finally, it's not C because kilograms measures weight as well, so that will leave you with the answer D- Miles.
Have a Nice Day!!!!!!!!!!
4x+4y=-12
2x+4y=6
I am studying math and I i don’t know how to answer this question
Answer:
X = -y -3
X= -2y + 3 (if correct, please mark brainliest. :))
Step-by-step explanation:
1 5/18 + 1 5/18 + 17/18 + 17/18
Answer:
4.444
Step-by-step explanation:
mark me brainliest plz
After learning how to fly, Wendy reduced her daily commute time by
75
%
75%75, percent. Previously, her commute took
m
mm minutes.
Answer:
3/4m
Step-by-step explanation:
help me please , I appreciate it :))
The vertex of this parabola is at (3,5). When the value is 6, the x value is -1.
What is the coefficient of the squared term in the parabola's equation?
(3,5)
10
10
10
Answer: B -4
Step-by-step explanation:
Value of coefficient of the squared term in the parabola's equation = -4
Correct option is B.
What is parabola?A parabola is a U-shaped plane curve where any point is at an equal distance from a fixed point (known as the focus) and from a fixed straight line which is known as the directrix.
Given,
Vertex of parabola (h,k) = (3, 5)
y = 6 for x = -1
Parabola opens horizontally left side
Vertex-form equation of parabola
x = a(y - k)² + h
-1 = a(6 - 5)² + 3
-1 = a(1) 3
a = -4
Hence, -4 is value of coefficient of the squared term in the parabola's equation.
Learn more about parabola here:
https://brainly.com/question/21685473
#SPJ7
An online shopping club has 13000 members when it charges $7 per month for membership. For each $ monthly increase in membership fee, the club loses approximately 500 of its existing members. Write and simplify a function R to represent the monthly revenue received by the club when x represents the price increase.
Hint: Monthly revenue = # members•monthly fee
Just a answer with work will do, ill brainliest the best one.
Answer:
The function is: [tex]R(x)=(13000-500x)[/tex] × [tex](7 + x)[/tex]
Step-by-step explanation:
Total members=13000
Membership charge per month=$7
Increase in Membership charge per month=$1
For each $1 monthly increase in membership fee, the club loses approximately=500 members
For 1 month, 1 dollar decrease is 500 × 1
For x months, the decrease in the members is 500 × [tex]x[/tex] =[tex]500x[/tex]
The increase in membership fee is 7 + [tex]x[/tex]
After that,
Monthly revenue = Number of members × Monthly fee
Monthly revenue = [tex](13000-500x)[/tex] × [tex](7 + x)[/tex]
[tex]R(x)=(13000-500x)[/tex] × [tex](7 + x)[/tex]
Hope this helps and have a nice day!
75 POINTS!!!
An event organizer found that 70% of young couples prefer to have indoor weddings instead of outdoor weddings. You want to survey three randomly chosen couples and use the results to find the estimated probability that all three couples prefer indoor weddings.
This scenario can be simulated by generating a set of three numbers using a number generator with numbers
. The numbers
would represent couples who prefer indoor weddings. If all three numbers in the set are in the range
, it would mean that all three couples prefer indoor weddings.
Answer:
1. 0-9
2. 0-6
3. 0-6
Step-by-step explanation:
This scenario can be simulated by generating a set of three numbers using a number generator with numbers 0-9. The numbers 0-6 would represent couples who prefer indoor weddings. If all three numbers in the set are in the range 0-6, it would mean that all three couples prefer indoor weddings.
(ik you might not need this anymore, but I'm hoping it proves useful to others)
All three numbers in the set are in the range it would mean that all three couples prefer indoor weddings is 0-9, 0-6 and 0-6.
We have given that,
An event organizer found that 70% of young couples prefer to have indoor weddings instead of outdoor weddings.
What is the range?The Range is the difference between the lowest and highest values.
This scenario can be simulated by generating a set of three numbers using a number generator with numbers 0-9. The numbers 0-6 would represent couples who prefer indoor weddings. If all three numbers in the set are in the range 0-6, it would mean that all three couples prefer indoor weddings.
To learn more about the range visit:
https://brainly.com/question/2264373
#SPJ2
Mark had three bags of
jelly beans. If he ate 1/5 of a
bag each day, how long
would his jelly bean supply
last?
Plane
Answer:
Marks stash of jelly beans would last him 15 days.
Step-by-step explanation:
if you do 3 divided by 1/5 you would get 15.
NEED HELP WILL GIVE BRAINLIEST!
Answer: a=60
Step-by-step explanation:
A child tosses a baseball up into the air. On its way down, it gets caught in a tree for several seconds before falling down to the ground.
Sketch a graph that represents the height of the ball, as a function of time.
Be sure to include a label and a scale for each axis.
PLEASE HELP MEEE!!!!
this is due today at 12 help!!
(image included)
Answer:
most likely asking for something like this
Step-by-step explanation:
Answer:
Read the step-by-step for the entire answer!!!
Step-by-step explanation:
Whenever you have situations like these you have to look at it from the perspective given.
If you are throwing a ball it's going to start at ground 0 where the child is, therefore the height of the child is how high off the ground the ball is at 0 seconds.
If it is thrown, and it is stuck in the tree for a few seconds, then that means on the graph you will see an incline of the graph, and then a stale line for a few seconds as the ball is stuck in the same height for a few seconds.
After the ball falls down, then so will the height of the ball.
t - a function of time, is always on the x-axis because time variables are usually on the x-axis of a graph.
I choose seconds as a measurement of time because in a realistic situation a ball will be in the air for seconds.
h - the height of the ball, will be on the y-axis of the graph because it is a dependent variable (i.e. the height of the ball is dependent on how long the ball is in the air for).
The image below is the graph.