A coin is flipped 8 times. Find the probability of the event: exactly 3 heads​

Answer:

80 students

Step-by-step explanation:

Ratios:

[tex]\frac{12}{x} =\frac{15}{100} \\\\15x=1200\\x=80[/tex]

Double check:

80(0.15) = 12

Answer:

2

Step-by-step explanation:

15i-18=12

15i= 12+18

15i= 30

I= 30/15= 2

Answer:

y= x+4

y=–4–2x

Step-by-step explanation:

using the formula (x–x1)/(x1–x2)= (y–y1)/(y1–y2)

Answer:

450,000 pounds

Step-by-step explanation:

to round off to the nearest hundred thousand, look at thousand figure - If the number is greater or equal to 5, add 1 to the tenth figure. If this is not the case, add zero

to be rounded off to 500,000, it means that the thousand figure has to be between 50,000 - 99,000

the least figure would thus be 450,000

Answer:

Rent in 10th year = $5345.90

Step-by-step explanation:

Rent of apartment during first year = $1800 per month

But growth in rent with 11.5% per year will be represented by the exponential function,

Rent in 't'th year = [tex]\text{Initial rent}(1+\frac{\text{Growth rate}}{100})^{\text{time}}[/tex]

                          = [tex]1800(1+\frac{11.5}{100})^t[/tex]

                          = [tex]1800(1.115)^t[/tex]

Therefore, rent during 10th year will be,

Rent in 10th year = [tex]1800(1.115)^{10}[/tex]

                            = $5345.90

Answer:

4794

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

To solve this problem, we can just locate all the points listed in the problem.

The ordered pairs match the rectangle which is answer choice A.

Answer:

A

Step-by-step explanation:

The reason is that J,K,L,M are the points and the numbers of each points inside the parenthesis are the values of x-axis and y-axis.The first one is x and the second one is y. For example:(x,y) — (1,5)

Answer:

6/14 or in its simplest form 3/7

Answer:

20

50% of 40 is 20 because half of 40 is 20

Answer:

20

Step-by-step explanation:

1) Change 50% into a decimal

50% ⇒ 0.5

2) Multiply 0.5 by 40

0.5 × 40 = 20

Therefore, 50% of 40 is 20.

I hope this helps!

Answer:

∠3 = 102°

Step-by-step explanation:

║A straight line always equals 180°. So all we need to do is subtract 78° ║from 180° for the missing angle.

180 − 78 = 102

∠3 = 102°

Further explanation:

║The image shows two slanted lines across one vertical line. If we visualize ║a circle around the point where the slanted line intercepts with the vertical ║line, we can solve this.

[we only need one line to work with, because both lines are parallel]

║That circle you visualized divides the intercept into four sectors. One of ║those sectors, or angles, is labled 78°. We need to find the angle measure ║underneath the labled sector. The sector in the bottom right corner has ║the same angle measure as the labled sector, which is 78°. The sector ║labled ∠3 has the same angle measure as the sector in the upper right.

[a full rotation around an angle is always 360°]

║This can be easily solved by subtracting 78° from 180° to get the angle ║measure for the upper right sector, which is equivalent to ∠3. Using basic ║subtraction, 180° − 78° = 102°. We can prove this by multiplying 78° by 2, ║multiplying 102° by two, and adding the products.

78 ⋅ 2 = 156

102 ⋅ 2 = 204

204 + 156 = 360

║Because the sums equal 360°, we can determine the answer is true.

Answer:

the height when it was planted

Step-by-step explanation:

it started at 13 and grew 2.5 inches a week

Answer:

8 students

Step-by-step explanation:

Answer:

33

Step-by-step explanation:

There are 4:7 boys to girls, so there is a multiple of 11 people, 4 + 7 = 11.

there are 4*3 boys and 7*3 girls, 12 boys and 21 girls

The total value based on the information about the angles for Molly is 19 points.

From the information given, it was stated that acute angle is worth 5 points, a right angle is worth 7 points, and an obtuse angle is worth 7 points.

Therefore, the total value of the points will be:

= 5 + 7 + 7

= 19

In conclusion, the number of points will be 19.

Learn more about acute angles on:

https://brainly.com/question/6979153

Answer:

The conditions are not met.

Step-by-step explanation:

The conditions for the chi square test for goodness of fit are

1) the sample is a random sample

2) the variable under study is categorical

3) all expected value of the number of sample observations are greater or equal to 5.

A)The observations must be independent

B) for 2 categories the expected values must be at least 5

C) for the 3 categories the expected values must be at least 1 and no more than 20% may be smaller than 5

The observations given may not be independent  i.e  have equal chances of occurrences or are maybe dependent on each other in the sense that there maybe a limit for his traveling mileage or the a limit for petrol ( fuel ) usage . So if he is required to drive 500 miles in a week each day mileage depends on the other day mileage .

Also we are given the information that keeps track of his mileage for several weeks, but we are not sure if several   refers to more than 5 .

As both conditions are not clearly satisfied it is not appropriate to test his hypothesis using the chi-square goodness-of-fit test.

The sample must also be a random sample.

Here he has taken the mean of all the days.

Answer:

350

Step-by-step explanation:

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Step-by-step explanation:

256,934

What is value of the digit 5

ten thousand

Answer:

[tex] \huge\red{\boxed{\mathfrak{Answer}}}[/tex]

➳ Value of 5 = 50, 000 or Fifty Thousand.

✏ Place Value - It's in ten thousand's place.

ʰᵒᵖᵉ ⁱᵗ ʰᵉˡᵖˢ

Answer:

y=6+2x

Step-by-step explanation:

Answer:

8.33, 0.66, 24.79, 3.85, 0.61, 7.75, 60.47, 0.95, 26.48, 7.60

Step-by-step explanation:

Answer:

45

Step-by-step explanation:

We have the equation 2x² + 6x + 9 and are asked to find the value when x =3.

To solve this, all we need to do is substitute all variables with "x" to 3. Then do the properties :

2x² + 6x + 9

2(3)² + 6(3) + 9

Do exponents first :

2(9) + 6(3) + 9

Now multiply the numbers with parenthesis next to them :

18 + 18 + 9

Add to get the answer :

45

Answer:

27

Step-by-step explanation:

We have the equation:

2x^2+6x-9

If x = 3, we can substitute 3 in for the x values.

We get the equation:

2([tex]3^{2}[/tex]) + 6(3) - 9

Using PEMDAS:

First, evaluate the power.

3^2 = 9

Then, multiply the numbers.

2 x 9 + 6 x 3 - 9

We get:

18 + 18 - 9

Simplify.

18 + 18 = 36

36 - 9 = 27

Hope this helps.

Answer: Centroid

Step-by-step explanation: The center of gravity of a triangular solid with uniform thickness and density is the centroid which is the point at which one can balance the triangle. It is the center of mass of an object with uniform density.

Step-by-step explanation:

1. Oblicz:

a) Liczbę o 15% mniejszą od 60

b) Liczbę, której 15% stanowi 60

c) Jakim procentem 60 jest 15

d) O ile %większa jest 60 od 15

2. Kasia kupiła buty na wyprzedaży przecenione o 20%. Ich cena początkowa to 180 zł. W domu sprzedała je siostrze zarabiając na tym 10% wartości. Ile zapłaciła Kasi siostra za buty?

3. Liczba, którą powiększymy o 20% daje nam 30. Jaka to była liczba?

4. Za dwie książki zapłacono 42 zł. Ile kosztuje droższa z nich, jeżeli jedna jest o 25 % tańsza od drugiej?

Answer:

Commutative property

Step-by-step explanation:

Answer:

the fist one

Step-by-step explanation:

Answer:

its A

Step-by-step explanation:

i did the math