Help i really dont understand this :')

btw its X + 15 not 25 i messed up

Answer:

C. √2 - 1

Step-by-step explanation:

If we draw a square from the center of the large circle to the center of one of the small circles, we can see that the sides of the square are equal to the radius of the small circle (see attached diagram)

Let r = the radius of the small circle

Using Pythagoras' Theorem [tex]a^2+b^2=c^2[/tex]

(where a and b are the legs, and c is the hypotenuse, of a right triangle)

to find the diagonal of the square:

[tex]\implies r^2 + r^2 = c^2[/tex]

[tex]\implies 2r^2 = c^2[/tex]

[tex]\implies c=\sqrt{2r^2}[/tex]

So the diagonal of the square = [tex]\sqrt{2r^2}[/tex]

We are told that the radius of the large circle is 1:

⇒ Diagonal of square + r = 1

[tex]\implies \sqrt{2r^2}+r=1[/tex]

[tex]\implies \sqrt{2r^2}=1-r[/tex]

[tex]\implies 2r^2=(1-r)^2[/tex]

[tex]\implies 2r^2=1-2r+r^2[/tex]

[tex]\implies r^2+2r-1=0[/tex]

Using the quadratic formula to calculate r:

[tex]\implies r=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}[/tex]

[tex]\implies r=\dfrac{-2\pm\sqrt{2^2-4(1)(-1)}}{2(1)}[/tex]

[tex]\implies r=\dfrac{-2\pm\sqrt{8}}{2}[/tex]

[tex]\implies r=-1\pm\sqrt{2}[/tex]

As distance is positive, [tex]r=-1+\sqrt{2}=\sqrt{2}-1[/tex]  only

Answer:

B. Subtraction

Step-by-step explanation:

Inverse operation mean that you do the equation but you flip the equation so you flip the symbol too. The inverse operation for this equation would be 132 - N = 87

Answer:

Step-by-step explanation:

Equation:

Flip the equation:

Answer is B.

(optional answer: N = 45).

Answer:

[tex]beinggreat78 ~is ~here ~to~ help~ you![/tex]

Let's start with 5 squared. 5 squared, or just squared in general, represents the number behind it times itself.

[tex]5^2~or~ 5*5 = 25[/tex]

Now, add 3

[tex]25 + 3 = 28[/tex]

Next, subtract 1

[tex]28 - 1 = 27[/tex]

Now, you must divide, because the line under the first equation represents division, or a fraction. For this case, division. Before dividing your result, 27, by y, the second equation, you first want to solve equation 2, y.

[tex]\frac{18}{2} = 9[/tex]

Lastly, divide x by y, 27 divided by 9

[tex]\frac{27}{9} = 3[/tex]

The problem is solved! The final answer is 3

Answer:

2,044.99 + Whaterver the tax percentage is. For example, if it's 8%, then you can do 2,044.99 x 1.08 to get your answer.

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

5

Answer: the answer is 27.92

Step-by-step explanation: if you right it vertical and line the desimals you will get the answer

Answer:

A.2x2x2x2x3 / 2^4x3

Step-by-step explanation:

Answer:

hmm i think it should look something like this

Step-by-step explanation:

i'm not sure if i am correct

Answer:

So our answer in pi form is 30.25π

Step-by-step explanation:

The circumference of a circle is given by the formulas :

[tex]2\pi r[/tex] or [tex]\pi d[/tex]  where r is radius and d is the diameter

Since

11π = 2πr

We can solve for r to use it in the area of a circle formula:

[tex]\frac{11\pi }{2\pi } = r[/tex]

r = 5.5

The area of a circle is given by the formula:

[tex]\pi r^{2}[/tex] where r is the radius/.

Since we found r we can find the area:

π(5.5)² = 30.25π

So our answer in pi form is 30.25π

Answer:

As you have not specified the format in which to give the answer, I am giving three ways of writing it:

[tex]\sf 30.25 \pi \ units^2[/tex]

[tex]\sf \dfrac{121}{4} \pi \ units^2[/tex]

95.03 units² (nearest hundredth)

Step-by-step explanation:

Formulae

(where r is the radius)

Given:

Therefore, use the given value and the circumference equation to find the radius:

⇒ circumference = 11π

⇒ 2πr = 11π

⇒ 2r = 11

⇒ r = 5.5

Now we have found the radius, simply substitute this into the equation for area of circle:

⇒ area of a circle = πr²

                             = π5.5²

                             = 30.25π units²

Answer:

25%

Step-by-step explanation:

It starts at 2000, and ends at 8000. Then I didvided it by 4, and got 25%.

Answer:

weight in an elevator must be less than 2000 lbs goes with w < 2000

a ton is 2000 lbs goes with w = 2000

the pool must hold at least 2000 gallons goes with w ≥ 2000

the scale can hold up to and including 2000 lbs goes with w ≤ 2000

my car weighs more than 2000 lbs goes with w > 2000

Step-by-step explanation:

If the weight is less than 2000 lbs, then the inequality will have a lesser than sign. The choice that matches is w < 2000.

If a ton is exactly 2000 lbs, then it's equal to 2000. In other words, the inequality will have an equal sign. The choice that matches is w = 2000.

If a pool should be held with at least 2000 lbs, then it's weight is either greater than or equal to 2000 lbs. the choice that matches is w ≥ 2000.

If a scaled can hold up to, including 2000lbs, then the maximum weight it can hold is 2000 lbs. The weight is less than or equal to 2000. the choice that matches is w ≤ 2000.

If a car weighs more than 2000 pounds, then the weight will be greater than 2000. The choice that matches is w > 2000.

hope this helps!

Answer:

12.12m

Step-by-step explanation:

because math

Answer:

I would say 80 pounds worth of tennis and ping pong equipment  

Step-by-step explanation:

8lbs+72lbs=80lbs

Given the distance Maria ran each day, the total distance she ran during a fifteen ( 15 ) days stretch is 55.5 miles.

In mathematics, multiplication is a method of finding the product of two or more numbers. It is one of the basic arithmetic operations, that we use in everyday life.

Here, we have,

Expression for the Total of Distance ran by Maria

Total distance = Distance ran each day × Number days

Given the data in the question;

Distance ran each day by Maria Dm = 3.7miles

Number days ran n = 15days

Total number of distance ran by Maria TDm = ?

Hence, Total distance = Distance ran each day × Number days

TDm = Dm × n

We substitute in our values

TDm = 3.7miles × 15

TDm = 55.5miles

Thus, the distance Maria ran each day, the total distance she ran during a fifteen ( 15 ) days stretch is 55.5miles.

Learn more about multiplication here:

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Marla ran 3.7 miles a day for 15 days straight. How many miles did Marla run altogether during the 15 day stretch?

Answer:

paul put it at 3,8 and its supposed to be at 0,6

Step-by-step explanation:

Answer:

L = 10 in
P = 40 in

Step-by-step explanation:

The area of a square is given by the equation:

A = L²

We rearrange this equation to make L the subject:

Square root both sides:

√A = L

Now we substitute A into our rearranged equation to find L:

L = √A

L = √100

L = 10 in

The perimeter of a square is given by the equation:

P = 4L

Substitute the L we just found to find P:

P = 4(10)

P = 40 in

Answer:

9,700,000.

Explain:

9 goes in the 1,000,000th place, and 700 would be placed right behind the 9's comma. Therefore, 9,700,000

Answer: 9,700,000

In order to answer this you should start by writing out one million. By doing this, you can find out where you ones, hundreds, thousands, and millions place is. Then input what you know. The nine would go in the millions place, then the 7 would go in the thousands place.

I hope this helps! : )

Answer:

B

Step-by-step explanation:

it's B because it says -0.905

Answer:

B) Point B

Step-by-step explanation:

A) Point A is located at -0.95

B) Point B is located at −0.905

C) Point C is located at -0.88

D) Point D is located at -0.835

Therefore, option B is your answer.

Answer:

8; 3 : 8

Step-by-step explanation:

to find out how many shapes there are for every 3 circles you must first reduce the ratio down to 3 : blank

divide both sides by 4

3 : 8

that means there are 8 shapes for every 3 circles

the simplified ratio is 3 : 8

Answer:

sorry but what do i answer

Answer:

d

Step-by-step explanation:

Answer:

A = (1/2, 1/2)
B = (3 1/2, 1/2)

C = (5, 1/2)

D = (4 1/2, 1/2)

Step-by-step explanation:

Answer:

A = (1/2, 1/2)

B = (3 1/2, 1/2)

C = (5, 1/2)

D = (4 1/2, 1/2)

Step-by-step explanation:

brainliest please

Answer:

You must be in 8th grade?

Step-by-step explanation:

For the first one I don't know.

The second one I'm also not sure about.

The third one, the answer is 225 because you will divided 150 by 2 and get the answer of 75 and then multiply 75 by 3 to get the answer of 225.

For the fourth one, you will multiply 5 x 2.5 = 12.5 then you will multiply 12.5 x 20 = 250yd^2.

For the last one you will multiply 2.25 x 22 = 49.5 miles.

Answer:

First on 3/4

Step-by-step explanation:

second one 0.0

Answer:

-2/3

Step-by-step explanation:

in division problems where we have fractions we keep the first number change the sign to multiplication and flip the fraction i believe

Answer:

The histogram shows there were 22 students in the class.

The histogram is symmetrical.

The histogram has a peak.

The histogram shows the data is evenly distributed.

Step-by-step explanation:

Three real-world examples of constant rate:

Driving a Car.

Filling a Bathtub.

Interest on a Loan.

Speed is the ratio of the given distance and time.

It shows how fast an object is moving at a given time.

The formula is Distance / Time.

We can find the distance or time when the required values are given using this formula.

We have,

Here are three real-world examples of constant rate:

Driving a Car:

If a car is traveling at a constant speed of 60 km/h, it will cover a distance of 60 kilometers in one hour, regardless of the terrain, traffic, or weather conditions.

The car's speed is constant.

Filling a Bathtub:

If you are filling a bathtub with a faucet that is delivering water at a constant rate, the water level in the tub will rise at a constant rate until the tub is full.

Interest on a Loan:

If you take out a loan with a fixed interest rate, the interest will accrue at a constant rate over time, as long as you make your payments on time.

Thus,

Three real-world examples of constant rate:

Driving a Car.

Filling a Bathtub.

Interest on a Loan.

Learn more about speed here:

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The rate of lawn mowing is given as 4/3 lawns per hour.

In order to solve a problem for two different values of a quantity, its unit value is first derived. This method is known as unitary method.

The given problem can be solved using unitary method as follows,

The number of lawns mowed in 9 hours = 12

Then, number of lawns mowed in 1 hour = 12/9 = 4/3.

Hence, the rate of mowing lawn for Audrey is 4/3 lawns per hour.

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Answer:

2m+10

Step-by-step explanation:

2(5+m)

=(2)(5+m)

=(2)(5)+(2)(m)

=10+2m

=2m+10