PLEASE HELP AND HURRY!!!!!
A square playground is covered with pebbles, except for two equal size triangular portions that have grass. How many square feet do the pebbles cover?
7ft
14ft
Answers
Answer:28\2
Step-by-step explanation:
7+7=14
7+7=14
14+14=28
Triangle A=1\2bh
So 28\2
The pebbles cover an area of 147 sq ft. We can use the Pythagorean theorem to find the solution.
What is Pythagoras theorem?
The Pythagoras theorem states that in a right triangle, the square of the hypotenuse is equal to the sum of the square of the other two sides.
Now, Let's call the length of the third side of the triangle "x".
Since the two triangles are equal in size, and they share two sides with the square, we can use the Pythagorean theorem to find x.
a² + b² = c²
7² + 7² = c²
49 + 49 = c²
98 = c²
c = √(98)
c = 7 √(2)
So, each triangle has a base of 7 ft and a height of 7 √(2) ft.
And, Area of each triangle = (base × height) / 2
= (7 × 7√(2)) / 2
= 24.5 ft²
Since, there are two triangles,
Hence, the total area of the grass is,
⇒ 24.5 sq ft × 2 = 49 sq ft
Hence, The square has an area of,
⇒ 14ft × 14ft = 196 sq ft
So, The pebbles cover an area of,
⇒ 196 sq ft - 49 sq ft = 147 sq ft.
Learn more about Pythagorean theorem here: brainly.com/question/14930619
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Related Questions
I need help with this . Please show workings.
1. a class library has 275 books . It is increased by 50 books.
What percentage increase is this?
Answers
Answer:
18.18%Step-by-step explanation:
Initial number = 275Increase in number = 50Percent increase:
50/275*100% = 18.18%Which model represents 1.56+0.33
Pls pls help me
Answers
Answer:
Model 2
Step-by-step explanation:
1.56 + 0.33 = 1.89
Please help I’m failing lolz..
Answers
Answer:
Yes, since there are no other values in the bracket, the squared is only targeting -2. (Brainiest?)
Step-by-step explanation:
:)
Which of the following best describes the equation below?
y = 8x + 7
A.
neither linear nor nonlinear
B.
linear
C.
both linear and nonlinear
D.
nonlinear
Answers
Answer:
B
Step-by-step explanation:
NO LINKS!!!!!!!!! please solve it and explain it.
Answers
Answer:
it nonlinear i think
Step-by-step explanation:
on the x it goes from a 3 3/5 to 5 2/5 then drops down to ten.
we already know this is wrong because linear means going straight and proportional when displayed on a graph instead of having zigzag and sharko lines
pls mark brainliest if its right thank u have a nice day! :D
BRAINLY AND 5 STARS AND THANK YOU IF CORRECT, NO FILE HOSTINGS OR REPORT!
Flavia has a bag with 8 white balls, 9 red balls, 14 green balls, and 10 orange balls. If she chooses two balls from the bag without replacement, what is the sample space of the second choice? Write just the number.
Answers
Answer:
6
Step-by-step explanation:
i hope its right and if not im sorry im not good with math
Write what you know about this phrase.
Preview: constant of proportionality
Answers
Answer:
Constant - A symbol having a fixed numerical value.
Proportionality - Equality between two ratios.
Jordan takes out $50 from his bank account each week. He started with $725.
Which of the following functions relates the amount in his account with the
number of weeks that have passed?
A. Y = 50x + 725
B. y = -50x – 725
C. y = 50x – 725
D. y = -50x + 725
Answers
Answer:
The answer is y= -50x + 725 so (D)
Step-by-step explanation:
Itś not gone be D on yall side s, make sure yall pay attention to the answer choices before you put
please help if you can :)
Answers
the domain of the function graphed above of
F,IF,B,5
Answer: 909.0
Solve for x. Round your answer to the nearest tenth. HELPPPPP!
Answers
Sin -1 ( 7/13)
= 32.6
Answer:
x = 32.6°
Step-by-step explanation:
Using the sine ratio in the right triangle
sin x = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{7}{13}[/tex] , then
x = [tex]sin^{-1}[/tex] ([tex]\frac{7}{13}[/tex] ) ≈ 32.6° ( to the nearest tenth )
Please help
See pic attached
Answers
The total number of counters is 18.
6 of those are red so there would be 6/18 red counters
Simplified, that is 1/3
a. 1/3
Red counters (6) + Green counters (8)=14
14/18 aren’t blue
b. 14/18
A - 6/18 reduced to 1/3
B - 14/18 reduced to 7/9
Explanation:
A - Add up all the numbers as the denominator (bottom) of your ratio fraction. Then take the number of red counters as the numerator (top) to place on top. You then get 6/18. Both numbers can be divided by 6 to get 1/3.
B - Add up all the numbers as the denominator (bottom) like you did above. Then subtract the total number by the number of blue counters (4). That number is 14 because the total number is 18 and it is your numerator (top). Now you have 14/18 which can both be divided by 2 to get 7/9.
Hope this helps, have a great day :)
Find the measure of the indicated angles below.Drag the points to show the measure of the four angles
Answer Plzz
Answers
A. Angle E = 113°
B. x = 16°
ExplainNumber A
92 + 70 + 85 + ? = 360
162 + 85 + ? = 360
247 + ? = 360
? = 360 - 247
? = 113°
Number B
108 + 84 + ( x + 30 ) + ( 2x + 18 ) = 360
(180 + 84 + 30 + 18) + (x + 2x) = 360
312 + 3x = 360
3x = 360 - 312
3x = 48
x = 48/3
x = 16°
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A bag contains 4 red balls and 5 white balls of same size.
Two balls are drawn randomly one after another (without
replacement). Find the probability that both balls are red
by drawing a tree diagram.
Ans:
Answers
Answer:
about 1/16th of a possiblity
Step-by-step explanation:
this was the best I could do. I hope this helped
What are the solutions to the equation x2 + 4x – 12 = 0?
Answers
Answer:
Step-by-step explanation:
X=2,-6
Write down the first even multiple of 9
Answers
The first even multiple of 9 is 18.
Answer:
18
Step-by-step explanation:
1 times 9 is 9;
2 times 9 is 18;
3 times 9 is 27;
and so on.
The first even multiple of 9 is 18.
Carl and Nicole are raising money to purchase basketballs for their school's team. The more money they raise, the more basketballs they will be able to purchase for the school. What is the independent variable?
Answers
Answer:
The amount of money raised
Step-by-step explanation:
The amount of basket balls depends on the money rasied and is therefore dependant, that leaves the money, which is completely independent.
The amount of the money that they've raised.
x over 5 + x over 2 = 14
Answers
Answer:
Step-by-step explanation:
x = 20
Answer:
20
Step-by-step Explanation:
Fairview is 15 kilometers due north of the airport, and Lowell is due east of the airport. If the
distance between Fairview and Lowell is 17 kilometers, how far is Lowell from the airport?
Answers
Answer:
8km
Step-by-step explanation:
The three points form a right-angled triangle with 15km as the height and 17km as the hypotenuse.
To find the distance between Lowell and the port which is the base use the pythagorean theorem.
=√17² - 15²
=8km
In ΔXYZ, ∠Y=90° and ∠X=73°. ∠ZWY=80° and XW=80. Find the length of ZY to the nearest 100th
Answers
Answer:
618.2203≈618.22
Step-by-step explanation:
618.2203≈618.22
(c) Rashid has 210g of cocoa powder and plenty of the other ingredients.
He says that he can make at least 75 cupcakes.
Is he correct?
Explain your reasoning.
Answers
Answer:
He is incorrect. He would need 225g of cocoa powder
Step-by-step explanation:
1. Lets calculate how much powder do we need per one cupcake, so 60 divided by 20, since 60g makes 20 cupcakes, 60/20 = we get 3g of cocoa powder per one cupcake.
2. Now we can multiply that by 75, 75*3=225, and 225g is more than 210g
Nina mixed 2 ⅛ pounds of apples, 1 ½ pounds of berries, and 1 ¼ pounds of grapes for a salad. She set aside ⅓ of the slad for dinner and put the rest in a container for later. How many pounds of salad did she put in the container?
Answers
Answer: [tex]\dfrac{13}{4}\ \text{or}\ 3\ \dfrac{1}{4}\ \text{Pounds}[/tex]
Step-by-step explanation:
Given
Nina mixed [tex]2\ \frac{1}{8}[/tex] pounds of apples, [tex]1\ \frac{1}{2}[/tex] pounds of berries, and [tex]1\ \frac{1}{4}[/tex] pounds of grapes.
Total salad is
[tex]\Rightarrow \dfrac{2\times 8+1}{8}+\dfrac{1\times 2+1}{2}+\dfrac{1\times 4+1}{4}\\\\\Rightarrow \dfrac{17}{8}+\dfrac{3}{2}+\dfrac{5}{4}=\dfrac{17+12+10}{8}\\\\\Rightarrow \dfrac{39}{8}\ \text{Pounds}[/tex]
Now, one-third of the salad is kept aside and the remaining is put in the container.
Amount of salad Put in the container is
[tex]\Rightarrow (1-\dfrac{1}{3})\cdot (\dfrac{39}{8})=\dfrac{13}{4}\ \text{Pounds}[/tex]
I need this ASAP PLZ
Answers
Choose the function whose graph is given by:
Answers
Zach has an above-ground pool that has a radius of 5.5 feet. He wants to put a new wall liner around his pool and needs to know the circumference of the pool. Find the circumference of the pool to the nearest hundredth.
Answers
Answer: 34.54feet
Step-by-step explanation:
Thw circumference of the pool will be calculated by using the formula:
= 2πr
where
π = 3.14
r = 5.5
Therefore, circumference = 2πr
= 2 × 3.14 × 5.5
= 34.54feet
Therefore, the circumference of the pool to the nearest hundredth is 34.54feet.
What is the probability of flipping a coin 3times and getting 3tailsin a row?
Answers
Answer:
1/8
Step-by-step explanation:
The probability of getting tails on a single flip is 1/2.
Each of the flips is an independent event so you must multiply the probability of getting tails on each flip together.
So, your answer will look like this
[tex]\frac{1}{2}[/tex] x [tex]\frac{1}{2}[/tex] x [tex]\frac{1}{2}[/tex] ; which equals;
1/8
Answer:
1/8
Step-by-step explanation:
To calculate the probability you have to name all possible results first. If you mark a result of a single coin flip as H for heads or T for tails all results of 3 flips can be written as:
Ω = { ( H , H , H ) , ( H , H , T ) , ( H , T , H) , ( H , T , T ) , ( T , H , H ) , ( T , H , T ) , ( T ,T , H ) , ( T , T , T ) }
Each triplet contains results on 1st, 2 nd and 3 rd coin. So you can see that in total there are 8 elementary events in Ω.
| Ω | = 8
Now we have to define event A of getting tails three times.
The only elementary event which satisfies this condition is ( T , T , T ) so we can write that:
A = { ( T, T , T ) }
| A | = 1
Now according to the (classic) definition of probability we can write, that:
P ( A ) = | A|/ | Ω | = 1 /8
So finally we can write the answer:
The Probability of getting 3 tails in 3 coin flips is 1 /8 .
Find the volume of the cone in terms of pi. 405TT cm3 324TT cm3
405TT cm3 72TT cm3
Answers
The volume of the cone in terms of pi is 324π cubic cm.
What is volume of cone?Volume in mathematics describes how much space a three-dimensional item takes up. It is a measurement of the object's capacity, or the volume of fluid it can store. Typically, cubic units like cubic metres (m3) or cubic centimetres are used to determine an object's volume.
A three-dimensional object's shape affects the formula used to determine its volume. A rectangular prism's volume, for instance, can be determined by multiplying its length, width, and height.
The volume of the cone is given by the formula:
V = (1/3)πr²h
Now, for r = 9 and h = 12 we have:
V = (1/3)πr²h
V = (1/3)π(9²)(12)
V = 324π cubic cm
Hence, the volume of the cone in terms of pi is 324π cubic cm.
Learn more about volume of cone here:
https://brainly.com/question/29767724
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question:4x²-9
answer:
Answers
Step-by-step explanation:
4x^2-9
=(2x)^2 -3^2
=(2x+3) (2x-3)
Hope this helps you.
Which is a true statement based on the dot plots below?
.
++
10 20 30 40 50 60
Set A
10 20 30 40 50 60
Set B
O Set A has the greater mean.
O Set A has the lesser range.
O Set B as the greater median
O Set B is less symmetric than Set A
Answers
You scored 85% on your math quiz. The quiz was out of 50 points. How many points did you get?
Answers
Answer:
43
Step-by-step explanation:
PLZ HELP!!! ASAP!!!PLZ!!!
Answers
Answer: 150 cm2
Step-by-step explanation:
60x5 divided by 2 its pretty easy.