Answer:
314ft²
Step-by-step explanation:
A = πr²
A= π10²
A=100π
A=100*3.14
A=314
Hope this helps :)
Final answer:
To calculate the area of the circular pool's surface, use the formula A = πr² with π approximated as 3.14 and the given radius of 10 feet. The area is 314 square feet, as the calculation yields A = 3.14 × 100, which does not need adjustment for significant figures.
Explanation:
To find the area of the surface of the water in the circular pool with a radius of 10 feet, we use the formula for the area of a circle, which is A = πr². Let's use the given value for pi (π) as 3.14 and the radius (r) is 10 feet. So the calculation is A = 3.14 × (10 feet)².
Now, squaring the radius, we get (10 feet)² = 100 feet². Next, we multiply this by our value for pi, resulting in A = 3.14 × 100 feet² = 314 feet². Therefore, the area of the surface of the water in the pool is 314 square feet.
Recalling significant figures, since our given radius was precise to two significant figures, our final answer should also reflect two significant figures. However, since all the numbers in 314 are significant, there is no need for adjustments in this case, and the result remains 314 square feet.
PLEASE ANSWER QUICKLY!
Simplify –7(x + 10) + 9(x – 4)
Answer:
2x-106
Step-by-step explanation:
-7(x+10)+9(x-4)
Expand parentheses:
-7x-70+9x-36
Combine like terms:
2x-106
Hope this helps!
Answer:
2x - 106 (or x - 53) i hope this helps! :)
Step-by-step explanation:
-7(x + 10) + 9(x - 4)
you need to distribute the -7 with the x and the 10
-7x - 70 + 9(x - 4)
distribute the 9 with the x and -4
-7x - 70 + 9x - 36
combine like terms first the x values
2x - 70 - 36
combine like terms
2x - 106
i dont remember if you divide both by two or not
x - 53 if so x - 53 is the answer
18pi rounded to the nearest whole number
Answer:
56.52 but you have to round so its 57
Step-by-step explanation:
You have to multiply 18 and pi so we will use 3.14 for pi. 18 times 3.14 will give you 56.52 but you have to round it so it will be 57. If the number is greater than 5 you round up but if it is less you round down.
What type of angles are <2 and <7
Answer:
alternate exterior angles
Step-by-step explanation:
hope this helps
Answer:
Alternate Exterior Angles
Step-by-step explanation:
Alternate Exterior Angles are a pair of angles on the outer side of each of those two lines but on opposite sides of the transversal.
If you had 3 bread.choices, 4 meat
choices and 2 cheese choices how many
different sandwiches could you make? (Try
to make a tree diagram and count the end
of your branches to get your answer.)
Answer:
I think it's 15
Step-by-step explanation:
I'm just guessing
Mark is trying to find the length of a building block. He knows that the sum of 2.5 times the length of the block, 5 times the length of the block, and 1.9 inches is equal to 12.4 inches. What is the length of the building block?
Answer:22
Step-by-step explanation:
I think so
A box contains 18 blue flashlights, 3 red flashlights, 7 silver flashlights, and 2 black flashlights. The flashlights are identical in size and shape. If one flashlight is chosen at random, what is the probability that the flashlight will be either blue or black?
The probability that the flashlight will be either blue or black is,
⇒ 20/30
What is mean by Probability?The term probability refers to the likelihood of an event occurring. Probability means possibility. It is a branch of mathematics that deals with the occurrence of a random event. The value is expressed from zero to one.
We have to given that;
A box contains 18 blue flashlights, 3 red flashlights, 7 silver flashlights, and 2 black flashlights.
Hence, Total number of flashlights are,
⇒ 18 + 3 + 7 + 2
⇒ 30
So, the probability that the flashlight will be blue is,
⇒ 18 / 30
And, the probability that the flashlight will be black is,
⇒ 2 / 30
Hence, the probability that the flashlight will be either blue or black is,
⇒ 18/30 + 2/30
⇒ 20/30
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The probability of flashlight to be black or blue is 2/3. To find the probability of selecting a blue or black flashlight from a box, add the number of blue and black flashlights, then divide by the total number of flashlights.
We first find the total number of blue and black flashlights, which is 18 (blue) + 2 (black) = 20.
Then, we divide this by the total number of flashlights in the box (18 + 3 + 7 + 2 = 30) to get the probability.
The probability of choosing a blue or black flashlight is 20/30 = 2/3 = 0.67.
can you help out with this
Ian purchased cans of soda for a party he was having. For every 12 cans of soda she paied $4.98. What is the cost per can of soda?
Look at the attached picture
Hope it will be helpful to you
Which of the following tables models an exponential function?
x y
0 5
1 7
2 9
3 11
x y
0 5
1 10
2 20
3 40
x y
0 5
1 6
2 8
3 11
x y
0 5
1 10
2 15
3 20
Among the given tables, only the table with y-values doubling as x increments by 1 represents an exponential function. This is characterized by a constant proportional rate of change in the y-values in relation to x.
Explanation:The question asks to identify which of the given tables models an exponential function. An exponential function is a mathematical function in the form [tex]f(x) = a · b^x,[/tex] where a is not zero, b is a positive real number not equal to 1, and x is any real number. The key characteristic of an exponential function is that the rate of change (the increase or decrease) is proportional to its current value, meaning as x increases, the value of y increases or decreases at a rate proportional to its current value.
x y
0 5
1 7
2 9
3 11
This does not represent an exponential function because the increase in y is linear.
x y
0 5
1 10
2 20
3 40
This table models an exponential function since each y-value is doubling as x increases by 1.
x y
0 5
1 6
2 8
3 11
This does not model an exponential function because the growth does not follow a constant ratio.
x y
0 5
1 10
2 15
3 20
This also does not represent an exponential function as the increase in y is linear, similar to the first table.
Therefore, the table that models an exponential function is the one where the y value doubles as x increments by 1.
Please help, I need an explanation!
A circus charges $5 per child ticket and $8 per adult ticket. There were 136 tickets sold for a total of $830. How many child tickets and how many adult tickets were purchased?
I know that I need to use c + a =136 and 5c + 8a = 830
Answer:
50 adult
86 child
Step-by-step explanation:
c + a =136
5c + 8a = 830
These are the two equations to use
c is the number of child tickets and a is the number of adult tickets
The total number of tickets is 136
The child tickets are 5 dollars apiece and the adult tickets are 8 dollars apiece and the total amount made is 830
I will use elimination
Multiply the first equation by -5
-5(c+a) = -5*136
-5c-5a =-680
Then add this to the second equation
-5c-5a =-680
5c +8a = 830
------------------------
3a = 150
Divide each side by 3
3a/3 = 150/3
a = 50
Now we can find c
a+c = 136
50 + c = 136
Subtract 50 from each side
50+c-50 =136-50
c = 86
Answer:
child tickets: 86
adult tickets: 50
Step-by-step explanation:
C + A = 136
C = 136 - A
5C + 8A = 830
5(136 - A) + 8A = 830
680 - 5A + 8A = 830
3A = 150
A = 50
C = 136 - 50
C = 86
If the product of two integers is positive, their signs are positive or negative
Answer:
It could be both 2 positives, or 2 negatives.
Step-by-step explanation:
This is because a negative times a negative is a positive, and a positive times a positive is a positive.
If the product of two integers is positive, their signs can be either positive or negative.
If the product of two integers is positive, their signs are positive or negative.
To understand this, we need to consider the rules for multiplying integers. When we multiply two positive numbers or two negative numbers, the result is always positive. However, when we multiply a positive number and a negative number, the result is always negative.
For example, if we multiply +3 and +4, the result is +12. If we multiply -3 and -4, the result is also +12. But if we multiply +3 and -4, the result is -12.
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A 10-foot ladder is leaning against a tree. The bottom of the ladder is 4 feet away from the bottom of the tree. Approximately how high up the tree does the top of the ladder reach? 2.4 feet 6.0 feet 9.2 feet 10.8 feet
Answer:
C
Step-by-step explanation:
If we were to draw a horizontal line from the bottom of the ladder to the bottom of the tree and then draw a vertical line from the bottom of the tree to the top of the ladder, we'd get a right triangle with legs as the distance between the bottom of the tree and the bottom of the ladder and the height of the ladder, and the hypotenuse is the length.
Here, we know the hypotenuse is 10 feet and that the bottom of the ladder is 4 feet away from the bottom of the tree, so use the Pythagorean Theorem to find the height:
h = [tex]\sqrt{10^2-4^2} =\sqrt{84}[/tex] ≈ 9.2 feet
The answer is C.
Answer:
9.2 feet
Step-by-step explanation:
The ladder forms a right angle triangle with the ground and the tree
10² = 4² + h²
h² = 100 - 16
h² = 84
h = 9.16515139
help please 20 points!!!!
Answer:
its 10 points
Step-by-step explanation:
Answer:
a) 21/50
Step-by-step explanation:
Diego had a glue stick with a diameter of 0.7 inches he sets it down 3.5 inches away from the edge of the table, but it rolls onto the floor. How many rotations did the glue stick make before it fell of the table
Answer:
about 1.6 times
Step-by-step explanation:
The glue stick make about 5 times rotations before it fell of the table .
What is the unitary method?The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value. Unitary method is a technique by which we find the value of a single unit from the value of multiple devices and the value of more than one unit from the value of a single unit.
This is a method that we use for most of the calculations in math.
We are given that Diego had a glue stick with a diameter of 0.7 inches he sets it down 3.5 inches away from the edge of the table.
3.5 / 0.7 = 5
The glue stick make about 5 times rotations before it fell of the table .
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Use the quadratic formula to determine the solutions to the quadratic equation. Write your answers as decimals, and round to the nearest hundredth (2 decimal spots).
2x2−5x+1=0
Enter your answers in the boxes.
x =
or x =
Answer:x=2.28
X=0.22
Step-by-step explanation:
What is 4 log Subscript one-half Baseline w + (2 log Subscript one-half Baseline u minus 3 log Subscript one-half Baseline v) written as a single logarithm? 4 log Subscript one-half Baseline 2 Superscript 4 Baseline u squared minus v cubed log Subscript one-half Baseline w Superscript 4 Baseline (StartFraction u squared Over v cubed EndFraction) log Subscript one-half Baseline (StartFraction w Superscript 4 Baseline Over u squared v cubed EndFraction) log Subscript one-half Baseline (w (StartFraction u squared Over v cubed EndFraction)) Superscript 4
the answer is b on the edg
please help
A park has a shape of a regular hexagon of sides of 2km each.Ama walks a distance of 5km along the sides of the park.What is the direct distance between the start point and the end point?
Answer: 3.61km or √13
Step-by-step explanation:
Given Data:
Sides of hexagon = 2km each
Distance walked by Ama = 5km
Therefore;
Let Ama starting position be the origin.
With this She would travel along two edges and then go halfway along a third.
Her new x- coordinate would be
= 1 + 2 + 1/2 = 7/2
Because she travels a distance of 5km which translates to 2 and half side of the Hexagon
= 2*1/2
= 1km. On her x-coordinates
For her y-coordinate we use same principles as x-coordinates
= √3 + 0 - √3/2
= √3/2
Therefore her distance walked
= √ ( (7/2)^2 + (√ 3/2)^2 )
= √ ( 49/4 + 3/4 )
= √ 13
= 3.61km
I will give you a Brainly crown if it is right. Will you help me plzzzzzz helplpppppp
Answer:
90
Step-by-step explanation:
A semicircle is 1/2 of a circle
A circle is 360 degrees
1/2 is 180
We have 90 degrees already used on the left
180-90 = 90
b = 90 degrees
Answer:
90
Step-by-step explanation:
The whole thing equals 360
so have equals 180
and half of one 180 is 90 and you're trying to find that half of 180.
Which of the following is equivalent to 60 Superscript one-half?
a. StartFraction 60 Over 2 EndFraction
b. StartRoot 60 EndRoot
c.StartFraction 1 Over 60 squared EndFraction
d. StartFraction 1 Over StartRoot 60 EndRoot EndFraction
Answer:
[tex]\sqrt{60} [/tex]
Step-by-step explanation:
[tex]60^{1/2} [/tex] means [tex](\sqrt{60} )^{1} [/tex]
if i have 20 cookies and i take 10 away, how much do i have left
Answer:
10
Step-by-step explanation:
20 - 10 = 10
Answer:
you still have 20 because they are your cookies if i had 20 and you took 10 away it would be tend but since your taking your own cookies its 20 unless you eat them
Michael recorded the number of points his team scored for the first seven basketball games.
64, 58, 60, 52, 56, 62, 54
which box plot correctly represents the data?
Answer:
The first box.
Step-by-step explanation:
The minimum is 52, the max is 64, the median is 58.
The correct option is A.
Given,
The number of points scored for the first seven basketball games.
64,58,60,52,56,62,54
On arranging it in increasing order we get,
52,54,56,58,60,62,64
The above data is ungrouped data.
We know that, The median of ungrouped data is the middle term (when the total no. terms in data is odd) on arranging the data in ascending or descending order.
So here on arranging the above data, the middle term here is 58, hence the median here is 58.
The minimum score is 52 and the maximum score is 64.
On seeing the options we find that the option A is correct because here the minimum value is 52 and the maximum is 64 and median is exactly 58.
Hence, option A is correct.
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Find the exact length of the third leg
Question 1
A bike that is regularly priced at $159 has a 25% discount. How
much is the discount?
Select one:
O $119.25
O $89.50
O $124.25
O $39.75
Answer:
the last one $119.25
Step-by-step explanation:
if you buy an item at $159 with 25% discount, you will pay 159-39.75 = 119.25.
−6≥10−8x please help me solve this!1
A rectangle has an area of 144 ft2. The length is 16 ft. What is the width?
PLEASE HELP will give brainliest !!
What is the median of the afternoon (PM) group? 26,21,15,35,38,16,13,28,30,25,15,12,9,7,44,23,55,10,37,35
The median of the afternoon (PM) group is 23.
How to solve for the medianTo find the median of a set of numbers, we need to arrange them in ascending order and find the middle value.
Arranging the numbers in ascending order:
7, 9, 10, 12, 13, 15, 15, 16, 21, 23, 25, 26, 28, 30, 35, 35, 37, 38, 44, 55
There are 20 numbers in the dataset, so the middle value would be the 10th number when arranged in ascending order. In this case, the median of the afternoon (PM) group is 23.
Therefore, the median of the afternoon (PM) group is 23.
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Question is in the file below.
Answer:
50 because of corresponding angles, 2 parallel lines
Step-by-step explanation:
WILL GIVE BRAINLIEST ANSWER TO WHOEVER ANSWERS FIRST AND CORRECTLY EXPLAIN WHY YOURE CORRECT
Answer:
I believe its A
Step-by-step explanation:
You have to count the units to the subway to the house
You start by counting the squares from the subway to the right till you meet the same line as the house is located than you count up from there to the house
I got 13
Sorry if its wrong
The decorative plaque below is going to be beaded. If beading costs $4 per square centimeter, how much will it cost to bead the plaque?
Answer:
I did all the work and i believe the answer is 153
Step-by-step explanation:
9x5=45
12x9=108
108+45=153
Answer:
pretty sure u dont need the answer anymore, i hope you dont mind me getting some points
Step-by-step explanation:
Billy has $3.00. Bubble gum costs $.30. He bought four pieces.
The question is about calculating how much money Billy will have left after buying four pieces of bubble gum which costs $.30 each from his $3.00. After buying the bubble gum, Billy will have $1.80 left.
Explanation:The subject of the question is a simple mathematical problem related to Billy's purchase of bubble gum. Billy has $3.00 and purchases four pieces of bubble gum, which costs $.30 per piece. To calculate how much money Billy will have left after buying gum, you first need to figure out how much he spent on the bubble gum. Since bubble gum costs $.30 per piece and Billy bought four pieces, the total cost for the bubble gum is 4 * $.30 = $1.20. After buying the bubble gum, Billy will have $3.00 - $1.20 = $1.80 left.
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