Why should a pool be filled 80% of its capacity?

Answers

Answer 1

Answer:

safety and quicker to drain for safty

Answer 2
For safety reasons, less bacteria and better quality of water

Related Questions

Allison measured her rectangular deck and found that it has dimensions of 512 yards by 8 yards. Both the length and the width may have a measurement error of up to 15%. What is the maximum possible area of Allison’s deck, rounded to the nearest thousandth of a square yard?

Answers

Answer:

5416.96 square yards

Step-by-step explanation:

To find the maximum possible area, increase the dimensions by 15%, since the measurement error may be up to 15%.

512(1.15) = 588.8

8(1.15) = 9.2

Find the area using the area formula, A = lw

Plug in the length and width:

A = lw

A = (588.8)(9.2)

A = 5416.96

So, the maximum possible area is 5416.96 square yards

Please answer correctly !!!!! Will mark Brianliest !!!!!!!!!!!!!!

Answers

56.7!!!!!!!!!!!!!!!!!!!!

The drama club is running a lemonade stand to raise money for its new production. A local grocery store donated cans of lemonade and bottles of water. Cans of lemonade sell for $2.50 each and bottles of water sell for $1.25 each. The club needs to raise at least $600 to cover the cost of renting costumes. The students can accept a maximum of 460 cans and bottles.

Write a system of inequalities that can be used to represent this situation.

The club sells 144 cans of lemonade. What is the least number of bottles of water that must be sold to cover the cost of renting costumes? Justify your answer.

Answers

Answer:

Step-by-step explanation:

The drama club is running a lemonade stand to raise money for its new production. A local grocery store donated cans of lemonade and bottles of water. Cans of lemonade sell for $2.50 each and bottles of water sell for $1.25 each. The club needs to raise at least $600 to cover the cost of renting costumes. The students can accept a maximum of 460 cans and bottles.

Write a system of inequalities that can be used to represent this situation.

The club sells 144 cans of lemonade. What is the least number of bottles of water that must be sold to cover the cost of renting costumes? Justify your answer

What is the value of s?

Answers

Answer:

s = 53.3

Step-by-step explanation:

The square shows that the angle is 90 degrees, and is a shared angle. Therefore, the angles together make 90.

So, to get the unknown angle, you subtract the other angle by 90.

36.7 - 36.7 = 53.3

s = 53.3
a right angle is 90 degrees and we know this is a right angle because theres that little red box. so 90-36.7 = 53.3

Brainliest for help please

Answers

Answer:

B

Step-by-step explanation:

Given

5 [tex]\frac{11}{40}[/tex]

= [tex]\frac{5(40)+11}{40}[/tex]

= [tex]\frac{200+11}{40}[/tex]

= [tex]\frac{211}{40}[/tex] → B

christian has a collection of 18 shark teeth he has 6 tiger shark what precentage is tiger​

Answers

Answer:

33.3% I think lpl

Step-by-step explanation:

Find the value of x.

Answers

Answer:

Step-by-step explanation:

The equation for this is

12(x + 1) = 10(10 - x) and

12x + 12 = 100 - 10x and

22x = 88 so

x = 44

Compré un TV que costó 35.000 pesos. Si en la aduana debo pagar 10 % por impuesto de nacionalización y 12 % sobre el precio nacionalizado de IVA. ¿Cuánto dinero pagué en total solo en impuestos?

Answers

Answer:

7700 in taxes

27300 pesos remaining

7700 en impuestos

Quedan 27300 pesos

Step-by-step explanation:

I bought a TV that cost 35,000 pesos. If at customs I must pay 10% for nationalization tax and 12% on the nationalized VAT price. How much money did I pay in total just in taxes?

Solve the inequality, then identify the graph of the
solution.
2x – 1 > x + 2
N
X
-20
-10
0
10
20
r
-20
-10
0
10
20
-20
-10
0
10
20
-20
-10
0
10
20

Answers

Hope this is straightforward.

Find the lateral area of a cone with a diameter of 10 centimeters and a slant height of 9 centimeters round to the nearest tenth

Answers

Answer:

The lateral area of a cone is 141.4 square centimeters

Step-by-step explanation:

Mathematically, we have the formula for the lateral area of a cone as;

A = pi * r * l

where r is the radius of the cone and l

is the slant height of the cone

Mathematically, the radius is simply half the measure of the diameter

we have that as 10/2 = 5 cm

So substituting these values;

A = 22/7 * 9 * 5

A = 141.4 square centimeters

Help please will give brainliest

Answers

Answer:

Maybe 1 out the 10 possibilities

Step-by-step explanation:

I remember learning this a few years back but I'm not 100% sure.

may I have help?! Thanks

Answers

Answer:

Hello! answer: A

Step-by-step explanation:

9 × 3 × 12 = 324 cm3

Answer:

324 cm cubed

Step-by-step explanation:

length×width×height. hope this helps!

Darryl was shopping for a new camera. He found one with an original price of $125.00 and is marked 45% off. Sales tax for the item is 5.2%. What is the final price of the camera, including tax?

Answers

Answer:

$75.25

Step-by-step explanation:

Given data

Original price =$125

Discount =45%

Tax=5.2%

Let us find the discount

45/100*125

0.45*125

56.25

Let us find the tax

5.2/100*125

0.052*125

6.5

Hence the amount is

125-56.25+6.5

=$75.25

100 POINTS HELP! THIS IS A PROJECT. BUT AN ANSWER TOMORROW OR TODAY IS OKAY!


Describe how to find the terms mean, median, mode, and range of a group of numbers then, give examples. Make sure you include the data set (the group of numbers) you will be working with.

Answers

Answer: We will be working with the numbers 1-4, you can change the numbers to anything, just change the math.

The mean is the "average" of a set of numbers. Add up ALL the numbers, and then divide by how many numbers there are.

Ex. 1+2+3+4 then, 10/4 =2.5

The mode is the number that occurs most frequently in a set of numbers.

Ex. 1, 2, 2, 2, 3, 4, 2, 2, 4, : The mode would be 2.

The range is the difference between the smallest and highest numbers.

Ex. 1, 2, 3, 4, ,3, 2, 3, 4, : Put all the numbers in order, then subtract highest from lowest.

1,2,2,3,3,3,4,4

4-3=1 The range would be 1.

Answer:

The median is the middle. You add and divide for the mean. The mode is the one that appears the most. And the range is the difference in between. For example, the median is the middle number in a sorted, ascending or descending, list of numbers and can be more descriptive of that data set than the average. If there is an odd amount of numbers, the median value is the number that is in the middle, with the same amount of numbers below and above. The mean is the average of the numbers.  It is easy to calculate: add up all the numbers, then divide by how many numbers there are.  In other words it is the sum divided by the count. The mode of a data set is the number that occurs most frequently in the set. To easily find the mode, put the numbers in order from least to greatest and count how many times each number occurs. The number that occurs the most is the mode! The difference between the highest and the lowest values in a set. Interval, also called range, a set of real numbers that includes all numbers between any two numbers in the set.

The vertices of quadrilateral DEFG are D(-2, 6), E(-4, 6), F(-6, 9), and G(-1, 9). Find the coordinates of the image of quadrilateral DEFG after a translation using the rule (x, y) → (x + 1, y - 6), a reflection over the x-axis, and a reflection over the y-axis

Answers

Answer:

the coordinates from all of the transformations are (1,0) (3,0) (5,-3) (0,-3)

Step-by-step explanation:

after using the first rule the coordinates were (-1,0)(-3,0)(-5,3)(0,3)

after reflectiong it over the x-axis (-1,0)(-3,0)(-5,-3)(0,-3)

after reflecting it over the y-axis it gave the final answer of (1,0) (3,0) (5,-3) (0,-3)

A carpenter needs three pieces of wood to complete a furniture. The longest piece must be twice the length of the middle-sized piece. The shortest piece must be 2 in. Shorter than the middle-sized piece. If a board 70 in. Long is to be used, then find the length of each piece.

Answers

Answer: Shortest piece = 16 in.

Middle piece = 18 in.

Longest pice = 36 in.

Step-by-step explanation:

Let x be the length of the shortest piece.

as per given, length of the middle piece = x+2

Length of the longest piece=2(x+2)

Total length = 70 in.

i.e. [tex]x+(x+2)+2(x+2)=70[/tex]

[tex]2x+2+2x+4=70\\\\4x+6=70\\\\4x=70-6\\\\4x=64\\\\ x=\dfrac{64}{4}\\\\ x=16[/tex]

Shortest piece = 16 in.

Middle piece = 18 in.

Longest pice = 2(18) in.

= 36 in.

If f(x) = x2 – 3, then f(-1) is equivalent
to

Answers

Answer:

negative 5. or -5

Step-by-step explanation:

f(-1)= (-1)2-3

2 times -1= -2

-2-3= -5

f= -5

the answer to
this question is -5

Find each product. (30 Points!)

Answers

just need an answer                            

SOMEONE PLEASE HELP ME

Answers

It’s either A or B I’m sure

Pls help me with this question

Answers

Answer:

its 6

Step-by-step explanation:

Answer:

Option D, 5 ounces

Hope this helps!

if CH CD and DG CD, then CH ? DG.

Answers

Answer:

The answer is A

Step-by-step explanation:

If two lines are perpendicular to that same line, then they are parallell.

A is the answer to your question.

Find m∠E.

m∠E= ___∘

HELP 20 points

Answers

Answer:

55

Step-by-step explanation:

Angle C = Angle D (Corresponding Angles)

Therefore, BD//AC

Angle A = Angle B (Corresponding Angles)

=>6x-15=5x-1

=>6x-5x=-1+15

=>x=14

Angle B=5x-1

            =5(14)-1

            =70-1

            =69

Angle D=4x

            =4(14)

            =56

Angle E=180-(Angle D+ Angle B)          [Angle Sum Property]

            =180-(69+56)

            =180-125

            =55

the numerator of a fraction is 2 less than the denominator . If one is added to its denominator ,it becomes 1/2 ,find the fraction.

tell me with full explanation​

Answers

Answer:

numerator = 2 and denominator is 4

Step-by-step explanation:

let the denominator be x

numerator = x-2

according to the question

[tex]\frac{x-2}{x} = \frac{1}{2}[/tex]

do cross multiplication

x*1 = 2(x-2)

x = 2x -4

4 = 2x - x

4 = x

therefore denominator is 4

numerator = x-2

=4-2

=2

47 cm
Find the surface area of the triangular prism. The base of the
prism is an isosceles triangle.
37 cm
35 cm
24 cm
The surface area is cm².

Answers

Answer:

I'll setup the problem. But I have a question about the car the equal sides of the isosceles triangle. We'll go with 37 cm

Step-by-step explanation:

you will have to find the areas of the 2 isosceles triangles at either end and the 3 rectangles around the triangles.

Area for the triangles

[tex]A = \frac{1}{2} bh[/tex]

b = base of triangle, I'll guess it's 24cm

h = height (draw a line between the vertex of the equal sdes to the base at a right angle, then use Pythagoras to

find the height)

[tex]

h = \sqrt{ {37}^{2} - {( \frac{1}{2}b) }^{2}}[/tex]

area for rectangles

37x47 + 24x47 + 37x47

sorry it's a little sloppy (I'm on a cellphone)

comment if you have questions

Brainliest goes to whoever answers correctly

Answers

Answer:

The answer is C.

it definitely c because your trying to find what they had spent

Help me please it’s urgent

Answers

Answer:

(y-7) = 2(x-1)

Step-by-step explanation:

The point slope form of a line with slope m passing through (a,b) is

(y-b) = m(x-a)

here slope m = (7-3)/(1- -1) = 4/2 = 2

The point used was (1,7)

So the equation is

(y-7) = 2(x-1)

Note:

#11 is correct

Please help I’m desperate LOOK AT MY NAME :(

Answers

Answer:

3 is the line of symmetry, its the same on both sides

Step-by-step explanation:

Hope this helps and sorry you have to do I-ready it stinks

The answer for that would be three

The value of ( - 2 / 3 ) will be ……
a) Will be negative but more than -1

b) Will be greater than 0

c) Will be a positive but less than 1

d) Will be positive but between 0.5 and 1

Answers

Answer:

will be -0.667 so the answer will be greater than 0

Which line is the correct graph for y = -3/4x
A/ blue line
B/ purple line
C/ green line
D/ red line

Answers

Answer:D

Step-by-step explanation:

can someone please help me with this?? please please please help me

Answers

Step-by-step explanation:

base is 12, hypotenuse is 20

so X² is h²-b²

so X=16

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