Calculate the percentage of countries in the entire world that are
located in Asia, the percentage of countries in the world that are
located in Europe and the percentage of countries in the world that
are located in Africa. Change the percentages into fractions.

Answer:

40/11 or 3.63636

Step-by-step explanation:

"2.2" was replaced by "(22/10)".

Simplify   11/5

Divide 8 by 11/5

8/1 *5/11 = 40/11 because when dividing fractions just multiply by the reciprocal.

Step-by-step explanation:

half life time-50%-8.4hr

so for 10%- 8.4/5=1.68 hr

now for 70%

1.68 × 7 = 11.76 hrs

to one decimal place - 11.8hrs

11.8 hours ago, there were 70% more of the substance if an isotope of lead has a half-life of 8.4 hours.

Half life is the time that it takes for half of the original value of some amount of a radioactive element to decay.

Half-life period - 50% -8.4hours

so for 10%- 8.4/5 = 1.68 hour

now for 70%

1.68 × 7 = 11.76 hours

To one decimal place - 11.8hours

Hence, 11.8hours is the answer.

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Answer:280 in

Step-by-step explanation: First we multiply the length by the width and that would be 7 by 10 and we would get 70. Next we multiply the height by the total of (l x w), so 4 x 70 would be 280. Margo needs a total of 280 inches of wrapping paper to cover the entire box. Hope this helps! :)

Answer:

2.235

please mark brainliest

Step-by-step explanation:

Answer:

The product is 2.235

Answer:

d

Step-by-step explanation:

ur welcome plz mark brainliest

2/5 t is the probability that the balloon will be either red or blue.

Thus option A is correct.

The mathematical discipline known as probability specializes in determining the possibility of an event occurring. Probability, which expresses the probability of a risk, is calculated by dividing the total possible combinations by the frequency of favorable events. Composite reliabilities vary from 0 to 1, with 1 representing certainty and 0 representing hesitation.

The probability of the event will be taken as

The fact that the data of red and blue will have a chance of occurring in the event

The first draw chance would be 20/100 = 1/5

The second draw would be 20/100 = 1/5

P = 20 / 100 + 20 / 100

P = 1/5 + 1/5

P = 2/5

Therefore, option D is the correct option.

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Answer:

40

Step-by-step explanation:

Brainliest pls

To find the least common denominator (LCD) of 3/8 and 8/5, we can use the method of prime factorization.

Prime factorization of 8: 2 x 2 x 2

Prime factorization of 5: 5

To get the LCD, we need to include all the prime factors from both denominators, including duplicates:

LCD = 2 x 2 x 2 x 5 = 40

Now we need to convert both fractions so that they have a denominator of 40:

3/8 x 5/5 = 15/40

8/5 x 8/8 = 64/40

Now both fractions have a denominator of 40, and we can compare them more easily. The two fractions are:

15/40 and 64/40

So the LCD of 3/8 and 8/5 is 40.

May I please have a Brainliest? I put a lot of thought and effort into my answers, so I would really appreciate it!

Answer:

15x + 30y - 220

Step-by-step explanation:

The answer is 15x + 30y - 220

Answer:(3-5)t

Step-by-step explanation:

You solve the equation inside of parentheses first. Then if there’s no symbol by the parentheses you multiply the answer from inside the parentheses, by the number outside. In this case the number outside, is represented by “t”

141.37 square inches

Answer:

  about 141.4 square inches

Step-by-step explanation:

You want the area of icing on a cake that is 10 inches in diameter and 2 inches high.

The icing on a cake covers the lateral surface area and the area of the circular top. In terms of diameter, the sum of those areas is ...

  icing area = πdh +(π/4)d² = πd(h +d/4)

  icing area = π(10 in)(2 in + (10 in)/4) = π(10 in)(4.5 in)

  icing area = 45π in² ≈ 141.4 in²

The area of icing on the cake is about 141.4 square inches.

__

Additional comment

If you use 3.14 for π, you get 141.3 square inches.

The attachment shows the "pi button" value. We have rounded to tenths, The full precision result is given so you can round to your checker's requirements.

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Answer:

The second one

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer:

n = -3

Step-by-step explanation:

We have the equation –2(n + 2) + 6 = 8. First, we simplify it:

–2(n + 2) + 6 = 8

–2(n + 2) = -2n + (-4) = -2n - 4

So now we have:

-2n - 4 + 6 = 8

We can subtract 6 from both sides of the equation to get:

-2n - 4 = 2

We can also add 4 to both sides to get:

-2n = 6

Divide both sides by 2 to get:

-n = 3

Multiply both sides by -1 to get:

n = -3

Answer:

Inequality Form: x < -9.2

Interval Notation: (-∞, -9.2)

Step-by-step explanation:

To estimate the volume using the Midpoint Rule with \(\displaystyle n=5\), we need to divide the interval \(\displaystyle 0\leq x\leq 1\) into \(\displaystyle n\) subintervals of equal width. Since \(\displaystyle n=5\), each subinterval will have a width of \(\displaystyle \Delta x=\frac{1-0}{5}=\frac{1}{5}\).

Now, let's calculate the volume using the Midpoint Rule. The formula for the volume obtained by rotating about the y-axis is:

\(\displaystyle V\approx 2\pi \sum _{i=1}^{n}y_{i}\Delta x\)

where \(\displaystyle y_{i}\) represents the value of the function \(\displaystyle y=\sqrt{1+x^{3}}\) evaluated at the midpoint of each subinterval.

First, let's find the midpoints of the subintervals. Since the width of each subinterval is \(\displaystyle \Delta x=\frac{1}{5}\), the midpoint of the \(\displaystyle i\)-th subinterval is given by:

\(\displaystyle x_{i}=\frac{\Delta x}{2}+\left( i-\frac{1}{2}\right) \Delta x=\frac{1}{10}+\left( i-\frac{1}{2}\right) \frac{1}{5}\)

Substituting \(\displaystyle x_{i}\) into the function \(\displaystyle y=\sqrt{1+x^{3}}\), we obtain:

\(\displaystyle y_{i}=\sqrt{1+\left( \frac{1}{10}+\left( i-\frac{1}{2}\right) \frac{1}{5}\right) ^{3}}\)

Now, we can calculate the approximate volume using the Midpoint Rule:

\(\displaystyle V\approx 2\pi \sum _{i=1}^{5}y_{i}\Delta x\)

Substituting the values of \(\displaystyle y_{i}\) and \(\displaystyle \Delta x\) into the formula, we can evaluate the sum and compute the estimated volume.

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Answer:

18=x y z mc squared

Step-by-step explanation:

Answer: The three angles choice.

Step-by-step explanation:

First we need to remove the measures that can't create a triangle.

3, 5, 10 cm sides.

First of all, This is impossible. 3+5=8, which means that 10 is too large of a side to create a triangle.

Now the other ones can either create one or infinite.

Two sides: 4, 7 cm and angle 54 between them.

tan(54) = o/7 ; o = 7(tan(54)) = 9.63

OR

tan(54) = o/4 ; o = 4(tan(54)) = 5.5

There are two possible triangles, but not infinite.

3, 5, 7 ; The parameters work, but there's only one possible triangle here.

The three angles can create infinite number of triangles, since there's an infinite number of side lengths that can fit these angle proportions.

Answer: The three sides one.

Step-by-step explanation: hope this helps! <3

190-25=165/55=3

It needs more characters so yeah okay

Answer:

no bro, sorry. even though I needed to I don't have it

Answer:

Answer: Mid-point is (8, 29)

Step-by-step explanation:

Mid point formular:

\(mid \: point = ( \frac{x _{1} + x_{2} }{2} ,\: \frac{y_{1} + y_{2}}{2} )\)

substitute:

\( mid \: point = ( \frac{0 + 16}{2} , \: \frac{17 + 41}{2} ) \\ \\ = ( \frac{16}{2} , \: \frac{58}{2} ) \\ \\ = (8, \: 29)\)

Explanation:

The data from the stem-and-leaf plot is:

10,

24,25,26,

30,30,32,33,

40,45,46

Add up those values

10+24+25+26+30+30+32+33+40+45+46 = 341

Then divide over n = 11 which is the sample size.

341/11 = 31 is the arithmetic mean.

Answer:

341/11 = 31 is the arithmetic mean.

Step-by-step explanation:

Answer:

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

Step-by-step explanation:

Answer:

600 centimeters to meters is 6 meters

Answer:

Step-by-step explanation:

the answer is a. (the first one)

Number lines are used to represent relationship between numbers at regular intervals

The number line that represents the equation \(\frac{m}{-2} - 7 = -9\) is number line (c)

The equation is given as:

\(\frac{m}{-2} - 7 = -9\)

Add 7 to both sides of the equation

\(\frac{m}{-2} = -2\)

Multiply both sides of the equations by -2

\(m = 4\)

This means that, the solution to the equation is \(m = 4\)

The number line that represents \(m = 4\) is number line (c)

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Answer:

\(s\geq 45\)

Step-by-step explanation:

First, we need to find out how many spoons Lily actually needs.

420-159=420-160-1=269

Next, we need to find out how many packs of spoons Lily needs.

269/6=44.83333333…

Now we need to round this number down and add 1.

44+1=45

Finally, we need make an inequality. Remember, “at least” means greater than or equal to.

\(s\geq 45\)

Answer:

the answer is B

Step-by-step explanation:

Point P is shown on the number line below. The distance between point Q and point P is 6 units. Which number could represent point Q?

d. (6-8) is the  expression which represents the distance between points P and Q.

The distance between two points is the length of the segment connecting the given two points. The distance of a point from a line is the length of the shortest segment from the point to the line.  Distance is the total movement of an object without  direction. We can determine distance by how much ground an object has travelled, regardless of its starting or ending point.

In analytical geometry, the distance formula is used to measure the distance  between two lines, the sum of the lengths of all  sides of a polygon, the perimeter of a polygon in a coordinate plane, the area of ​​polygons and many others.

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Inequality Notation: x<1

And then on number line:

(in image)

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x < 1

5x/5 < 5/5

1. divide both sides by the same factor

2. Cancel terms that are in both the numerator and denominator

3. Divide the numbers

The correct answer is (D) -2x - 8.

To simplify the expression -1/3 ( 6x + 15 ) - 3, we can first apply the distributive property to the term in parentheses:

-1/3 ( 6x + 15 ) - 3 = -1/3 * 6x - 1/3 * 15 - 3

Then we can simplify using the properties of multiplication and division:

-1/3 * 6x - 1/3 * 15 - 3 = -2x - 5 - 3

Finally, we can combine like terms:

-2x - 5 - 3 = -2x - 8

The correct answer is therefore (D) -2x - 8.✅

The Pythagorean Theorem states that in a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides.

In this case, let's denote the lengths of the legs as a = 1.5 centimeters and b = 2 centimeters, and the length of the hypotenuse as c = 2.5 centimeters.

The equation using the triangle's side lengths to show the Pythagorean Theorem holds true for the triangle is:

a^2 + b^2 = c^2

Substituting the given values, we have:

(1.5)^2 + (2)^2 = (2.5)^2

2.25 + 4 = 6.25

6.25 = 6.25

Therefore, the equation holds true, confirming that the Pythagorean Theorem is satisfied for the given right triangle.

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