If you flipped a fair coin 18 times, about how many times would you expect heads to appear? please ansewr i need help

Answer:

53 mm

Step-by-step explanation:

Perimeter is the sum of the lengths of all its sides.

Let the length of the unknown side be x mm.

123= 25 +45 +x

x= 123 -25 -45

x= 53

Thus, the unknown side is 53 mm.

Answer:

22, 68

Step-by-step explanation:

(Complementary means that the angles together equal 90 degrees)

x + x + 46 = 90

2x + 46 = 90

2x = 44

x = 22

22 + 46 = 68

Given that C varies directly as N, the value of Calories C when the number of ounces N is increased to the given value is 684 calories.

Proportional relationships are relationships between two variables where their ratios are equivalent.

Direct variation equation is a linear equation in two variables.

It is expressed as;

a ∝ b then a = kb

Where k is the proportionality constant.

Given the data in the question;

Since Calories C and Number of ounces N varies directly, we find their proportionality constant.

a ∝ b then a = kb

C = kN

380 calories = k × 20 ounces

k = 380 calories / 20 ounces

k = 19 calories/ounces

Now,we find C when N is 36 ounces.

C = kN

C = 19 calories/ounces × 36 ounces

C = 684 calories

Given that C varies directly as N, the value of Calories C when the number of ounces N is increased to the given value is 684 calories.

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Step-by-step explanation:

Y is directly proportional to X" can be rewritten as a mathematical expression of the form Y = KX

"K" is the constant of proportionality and must be determined from the initial information.

If Y = 2/3 when X=1/12means 2/3=1/12

K = 2/3÷1/12 = 8

Now that we know the value of K, we can use it to calculate the value of Y when X=1/2

Y = (8)(1/2) = 8/2=4

Y=4

Answer:

5^2+10^2=25+100=125

Step-by-step explanation:

Answer: 125

Step-by-step explanation: 5² + 10² = 25 + 100

Answer:

7.5 feet

Step-by-step explanation:

Hello there.

1. We know that the scale drawing is 0.75 inches long.

2. If 1 whole inch on the map is equivalent to 10 feet in real life, then how much feet in real life would be 0.75 inches on the map?

0.75 is equivalent or equals to 3/4 as a fraction.

Multiply 3/4 with 10 feet to get 7.5 feet.

Hope this helped!

- Angelo

Answer:

  813 N/m²

Step-by-step explanation:

The units of pressure tell you it is found by dividing force by area. Here, we need to convert the units of the given area so we can express the pressure appropriately.

__

  pressure = force / area

  pressure = (61 N)/(750 cm² × ((1 m)/(100 cm))²) = (61 N)/(0.0750 m²)

  pressure ≈ 813 N/m²

Answer: A is cheaper

Step-by-step explanation: In the plan A, he pays $270( 45×6) as fee

Then $50/month for racket which is $300

total270+300=570

In plan b he pays 75 per month which is $450 and $37.5 on racket per month which is $225 making a total of $675

Difference in 6months is 675-570= $105 saved

Answer: 105

Step-by-step explanation:

did test

Answer:

Step-by-step explanation:

Given

Solving

Answer:

f(3) = 6

Step-by-step explanation:

f(x)=2x^2 + x -5

f(3) = 2 (3)^2 + (3) - 5

f(3) = 8 + 3 - 5

f(3) = 11-5

f(3) = 6

Answer: 5 1/4

Step-by-step explanation:

Answer:

90°

Step-by-step explanation:

The minutes hand is vertical pointing straight up.

The hours hand is horizontal pointing right.

The smaller angle between the hands is 90°.

Answer:

  6.4

Step-by-step explanation:

The hypotenuse of a right triangle can be found from the other two sides by making use of the Pythagorean theorem. It tells you the square of the hypotenuse is the sum of the squares of the other two sides:

  c² = 4² +5²

  c² = 16 +25 = 41

  c = √41 ≈ 6.4

The missing side length is about 6.4 units.

Answer:

P' (- 3, 1 )

Step-by-step explanation:

the translation

(x, y ) → (x - 6, y + 5 )

means subtract 6 from the x- coordinate and add 5 to the y- coordinate, so

P (3, - 4 ) → P' (3 - 6, - 4 + 5 ) → P' (- 3, 1 )

Answer:

x/x+3

Step-by-step explanation:

first off, we start by factorizing.

we start with the numerator  taking x out making it x (x-3) / x^2 - 9

then we factorize the denominator a bit more...making it x (x-3) /  (x-3) (x+3)

as you can tell there is a (x-3) on both sides. so we can cross them out.

x/x+3 is left. try it yourself again so you can understand other questions like this! I hope I could help!

Answer:

17s

Step-by-step explanation:

Distance/Time = 264/11

So, in 1 second the toy robot travels 24 centimeters

408/24 = 17s

That's what I concluded with

Answer:

option C is the answer

Step-by-step explanation:

hope this helps you

Step-by-step explanation:

Use the property of logarithm (change of base)

Apply to the given logarithm, considering same natural base

The rule is

[tex]\boxed{\sf log_ab=\dfrac{log_eb}{log_ea}=\dfrac{lnb}{lna}}[/tex]

Now

[tex]\\ \rm\Rrightarrow log_8(12)=\dfrac{ln12}{ln8}[/tex]

Answer:

sample means

Step-by-step explanation:

Answer: you can you you side tools

Step-by-step explanation:

The net income of Dorothy when she works 40 hours per week and her net pay is $2,718 monthly (4 week) is $17/ hour approximately.

When 'a' is divided by 'b', then the result we get from the division is the part of 'a' that each one of 'b' items will get.

Thus, if 10 mangoes are there, and 2 people, then 10 ÷ 2 is the number of mangoes each person would get, which is 5.

Division, thus, can be interpreted as equally dividing the number that is being divided in total x parts, where x is the number of parts the given number is divided.

Thus,  [tex]a \div b = a[/tex] divided in b equal parts.

Also, we can write: [tex]a \div b = a \times \dfrac{1}{b}[/tex]

(it is since a = a times 1 so [tex]a/b = 1 \times (a/b) = (1/b) \times a[/tex])

For this case, we're given that:

Since there are 4 weeks in a month, and each week, Dorothy works 40 hours per week, so the number of hours she worked in those 4 weeks (one month work approx) is:

[tex]40+40+40+40 = 4 \times 40 = 160 \: \rm hours[/tex]

That means, Dorothy gets $2718.26 for 160 hours of work.

Thus, if we divide this salary in 160 parts equally, we'll get net hourly income of Dorothy, as shown below:

[tex]\text{1 hour's pay} = \dfrac{2718.26}{160}\approx 16.98 \approx 17 \: \rm dollars[/tex]

Thus, the net income of Dorothy when she works 40 hours per week and her net pay is $2,718 monthly (4 week) is $17/ hour approximately.

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In a meta analysis, the researcher combines the actual results of a number of studies.

Statistical study is used to obtain the data and examine this data in the way, that its effectiveness can be measured.

There are three main types of statistical study-

When the researcher combines the actual results of a number of studies, then this study is called the meta analysis.

Here, in this analysis, he consists of a set of statistical procedures that employ effect sizes to compare a given finding across many different studies.

Thus, In a meta analysis, the researcher combines the actual results of a number of studies.

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Step-by-step explanation:

2/3 X = 2x -24

now just solve for X.

2X = 8X - 72

-6x = -72

X = 12

Answer:

P(vanilla cupcake)= 1/2

Step-by-step explanation:

Knowing that:

3 vanilla cupcakes

3 other cupcakes

Total = 6

To Find:

What is the experimental probability that the next cupcake sold will be a vanilla cupcake?

Write your answer as a fraction or whole number.

P(vanilla cupcake)=

Solve:

Experimental probability is expressed as:

(Favorable outcomes) / (Total outcomes)

The favorable outcome in this situation is vanilla cupcakes. There were 3 vanilla cupcake sold, so this is the numerator of our fraction.

To find the total outcomes we add 3 + 3, which equals 6. This will be the denominator of our fraction.

The fraction used to express experimental probability will be: 3/6

We can further simplify this to 1/2.

Thus:

P(vanilla cupcake)= 1/2 or 3/6

Kavinsky

Answer:

The area of figure = 600 cm ²

Step-by-step explanation:

Area of this figure = area of triangle + area of rectangle

Area of triangle = 1/2 × base × height

Area of rectangle = length× breadth

=> (1/2 × 20 × 20 ) + ( 20×20 )

=> 200 + 400

=> 600 cm²

Answer:  g + s = 698

                   3g = s

Step-by-step explanation:

By looking the question, we know that gold tickets and silver tickets add up to 698, so we get:

g + s = 698

And we know that silver tickets is three times of the gold tickets.

3g = s

We combined them together, we get :

g + s = 698

3g = s

Answer: (-5, -4)

Step-by-step explanation:

Reflection across y axis flips the sign of x coordinate only

Answer:

the other person is probably correct!

Step-by-step explanation:

Answer:

it is C

Step-by-step explanation:

got it right on edge

Answer:

1,582.6 in.3

Step-by-step explanation:

Answer:

Triangular prism

Step-by-step explanation:

Got it right on edge 2022 :)

The three-dimensional figure that has exactly three rectangular faces is a rectangular pyramid

The volume of a pyramid, is the product of the area of its base with the height of the pyramid, and divide by 3. We express this product with the formula V = ( 1/3) ×B×h, where B is the area of the base of the pyramid, and h is its height.

Volume of Pyramid = ( 1/3 )a²H

Given data ,

Let the pyramid be represented as A

Now , A rectangular prism has 6 faces, where each face is a rectangle.

A rectangular pyramid has 5 faces, where 4 faces are triangles and 1 face is a rectangle.

A triangular prism has 5 faces, where 2 faces are triangles and 3 faces are rectangles.

A triangular pyramid has 4 faces, where 3 faces are triangles and 1 face is a rectangle.

Hence , the only figure that has exactly three rectangular faces is a rectangular pyramid

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[tex]~~~~(x-2)^2 = 16\\\\\implies x-2 = \pm\sqrt{16}\\\\\implies x-2 = \pm4\\\\\implies x= \pm4 +2\\\\\implies x=-4+2~~ \text{or}~~ 4+2\\\\\implies x = -2~~ \text{or}~~ 6[/tex]

Answer:

[tex]x = - 2[/tex]

[tex]x = 6[/tex]

Step-by-step explanation:

[tex](x - 2)^{2} = 16[/tex]

[tex]x - 2 = ± \: 4[/tex]

[tex]x - 2 = - 4[/tex]

[tex]x - 2 = 4[/tex]

[tex]x = - 2[/tex]

[tex]x = 6[/tex]