HELP
Find the area of the semicircle.

Either enter an exact answer in terms of

π

πpi or use

3.14

3.143, point, 14 for

π

πpi and enter your answer as a decimal.

3.25 x 10^-6 written in decimal notation  is 0.00000325

Solution:

Decimal notation is simply a form of a number using a decimal point

Given number : [tex]3.25 \times 10^{-6}[/tex]

Steps to follow:

In order to convert a number written in scientific notation to one written in standard or decinal notation, follow these steps:

To convert to decimal notation:

Multiply the decimal number by 10 raised to the power indicated.

[tex]\rightarrow 3.25 \times 10^{-6}[/tex]

Here the exponent of 10 is -6

So the decimal point is moved 6 places to right

[tex]\rightarrow 3.25 \times 10^{-6} = 0.00000325[/tex]

Final answer:

To convert the scientific notation 3.25 x 10^-6 into decimal form, you move the decimal point six places to the left, resulting in 0.00000325.

Explanation:

To convert 3.25 x 10^-6 into decimal notation, you need to move the decimal point 6 places to the left because it is a negative exponent. Start with 3.25 and move the decimal:

The decimal notation of 3.25 x 10^-6 is 0.00000325.

Final answer:

To find the area of the clock face with a 4-meter radius, use the area formula for a circle, which gives approximately 50.265482 m². Rounded to the nearest square meter, the clock face area is about 50 m².

Explanation:

The clock face in a famous clock tower has a radius of 4 meters, and we want to find the area of the clock face to the nearest square meter. To do this, we use the formula for the area of a circle, which is A = πr², where A is the area and r is the radius of the circle.

Plugging in the radius of the clock face:

A = π(4 m)² = π(16 m²) ≈ 50.265482 m²

However, since we want the answer to the nearest square meter, we round this to:

A ≈ 50 m²

Final answer:

The area of the clock face with a radius of 4 meters is approximately 50 square meters when rounded to the nearest square meter.

Explanation:

The area of a clock face in a famous clock tower, given its radius is 4 meters, can be calculated using the formula for the area of a circle, which is [tex]A = πr^2[/tex] where A is the area and r is the radius of the circle. In this case, substituting the radius of 4 meters into the formula gives us[tex]A = π(4m)^2 = π16πm^2.[/tex] To give an answer to the nearest square meter, we use the value π = 3.14, resulting in [tex]A = 16(3.14)m^2 = 50.24m^2[/tex], which rounds to 50 m².

By dividing 452 pictures of dogs by 4, we find that each of the 4 equal groups has 113 pictures. The division process involves using place value and the standard algorithm for long division.

To find out how many pictures of dogs are in each group, we need to divide the total number of pictures by the number of groups. The question states there are 452 pictures of dogs and these are divided into 4 equal groups. We can use long division to solve this.

Step-by-Step Solution:

Write down the division: 452 ÷ 4.

Start by looking at the hundreds place in 452. There are 4 hundreds in 452. Since 4 divided by 4 is 1, we put 1 in the hundreds place of the quotient.

Multiply the divisor (4) by the quotient (100) to get 400.

Subtract 400 from 452 to get 52.

Now, look at the tens place in 52. There are 5 tens in 52, and since 5 divided by 4 is 1 with a remainder, we put 1 in the tens place of the quotient and have a remainder of 12 after subtracting 40 (1 x 4 tens) from 52.

Next, look at the ones place in 12. There are 12 ones, and since 12 divided by 4 is 3, we put 3 in the ones place of the quotient.

After placing 3 in the ones place, we have no remainder, which means the division is complete and the quotient is 113.

Therefore, each group has 113 pictures of dogs.

Answer:

[tex]f(x)=4(6x)[/tex]

Step-by-step explanation:

Given:

the given expression is.

[tex]f(x)=4(3)2x[/tex]

Simplify the given expression.

[tex]f(x)=4(3)2x[/tex]

[tex]f(x)=4(3\times 2x)[/tex]

[tex]f(x)=4(6x)[/tex]

Therefore, the option [tex]f(x)=4(6x)[/tex] is an equivalent function to [tex]f(x)=4(3)2x[/tex].

Answer:

the slope, m, is -6

Step-by-step explanation:

One of the most commonly used equations for a straight line is y = mx + b, where m is the slope and b is the y-intercept.

Comparing  y=4-6x to y = b + mx, we see that the slope, m, is -6 and the y-intercept, b, is 4.

The slope of the line y = 4 - 6x is -6, which shows that for every increase of 1 in the x-coordinate, the y-coordinate decreases by 6.

The equation is given as follows:

y = 4 - 6x

As we know that the equation is in slope-intercept form, y=mx+b.

Here, m is the slope and b is the y-intercept.

As per the question, the y-intercept is 4, which means the line crosses the y-axis at (0,4).

The slope, -6, tells us that for every increase of 1 in the x-coordinate, the y-coordinate decreases by 6.

Thus, the slope of the line y = 4 - 6x is -6.

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Answer:

[tex]radius=5\ cm[/tex]

Step-by-step explanation:

Let r be the radius of the circle and A be the area of the circle.

Given:

[tex]r_{1} = 2\ cm, A_{1}=12.566\ cm^{2}[/tex]

And [tex]r_{2} = ?, A_{2}=78.54\ cm^{2}[/tex]

The area of a circle is directly  proportional to the square of its  radius.

A ∝ [tex]r^{2}[/tex]

[tex]A = kr^{2}[/tex]-----------(1)

Where k is the constant of proportionality

Find constant value by substituting [tex]r_{1} = 2\ cm, A_{1}=12.566\ cm^{2}[/tex]

in equation 1.

[tex]A = kr^{2}[/tex]

[tex]A_{1}=k(r_{1})^{2}[/tex]

[tex]12.566=k\times 2^{2}[/tex]

[tex]12.566=k\times 4[/tex]

[tex]k=\frac{12.566}{4}[/tex]

[tex]k=3.141[/tex]

Find [tex]r_{2}[/tex] by substituting k and [tex]A_{2}[/tex] value in equation 1.

[tex]A = kr^{2}[/tex]

[tex]A_{2}=k(r_{2})^{2}[/tex]

[tex]12.566=3.141\times (r_{2})^{2}[/tex]

[tex](r_{2})^{2}=\frac{78.54}{3.141}[/tex]

[tex](r_{2})^{2}=25.004[/tex]

where: 25.004 ≅ 25

[tex](r_{2})^{2}=25[/tex]

[tex]r_{2}=\sqrt{25}[/tex]

[tex]r_{2}=5\ cm[/tex]

Therefore; the radius of the circle is 5 cm.

Final answer:

The radius of a circle with an area of 78.54 cm² is approximately 4 cm, after setting up a proportion with a known circle area and solving for the unknown radius.

Explanation:

The area of a circle is given by the formula A = πr², where A is the area and r is the radius of the circle. Given that a circle with a radius of 2 cm has an area of 12.566 cm², we set up a proportion to find the radius of a circle with an area of 78.54 cm²:

(12.566 cm²) / (2 cm)² = (78.54 cm²) / r².

Solving for r, we find r² = (78.54 cm²) × (2 cm)² / (12.566 cm²).

After calculation, we get r approximately equal to 4 cm, rounding to the nearest whole number.

Answer:

C = 6.75n + 50

Step-by-step explanation:

The equation for the cost of renting the party room can be written in the form;

C= mn+k ......i

Where C = cost

n = number of people

Substituting the 2 cases into the equation we have,

Case 1

117.5 = 10m + k ......1

Case 2

151.25 = 15m + k .....2

Subtracting eqn 1 from 2 we have

151.25 - 117.50 = 15m - 10m

5m = 33.75

m = 33.75/5 = 6.75

Substituting m = 6.75 into eqn 1, we have

117.50 = 10(6.75) + k

k = 117.5 - 67.50

k = 50

Therefore, rewriting the eqn i, we have

C = 6.75n + 50

The total number of miles Jean ran in the two weeks is 4.5 m.

Given that, last week Jean ran 2 fewer than 4m miles.

An expression is a combination of terms that are combined by using mathematical operations such as subtraction, addition, multiplication, and division.

Here,

Number of weeks Jean ran last week = 4-2=2 m

Number of weeks Jean ran this week = 2+0.5

= 2.5 m

Total number miles = 2+2.5

= 4.5 m

Hence, the total number of miles Jean ran in the two weeks is 4.5 m.

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Answer: 2√3

Step-by-step explanation: To divide √60 by √5, we simply divide the numbers that are inside the radicals.

Since the quotient of 60 divided by 5 is 12,

the square root of 60 divided by the square root of 5 is √12.

However, we can simplify the square root of 12.

The √12 breaks down into 4 · 3 and 4 breaks down into 2 · 2.

The 2's match up, so a 2 comes outside of the radical.

Since the 3 doesn't pair up, it stays inside.

So our answer is 2√3.

Final answer:

The simplification of [tex]\sqrt{60}/\sqrt{5[/tex] results in [tex]2\sqrt{3,[/tex] by combining the square roots into one and then simplifying the inner value.

Explanation:

The question asks for the simplification of the expression which is the square root of 60 divided by the square root of 5. To simplify this expression, one can utilize the property of square roots that allows the division within a single square root function. Here’s a step-by-step explanation:

Write the expression as [tex]\sqrt{60}/\sqrt{5[/tex]

Combine the square roots using the property[tex]\sqrt{(a)}/\sqrt{(b)} = \sqrt{(a/b),[/tex] giving[tex]\sqrt{60}/\sqrt{5[/tex]

Simplify 60/5 to get 12.

Now take the square root of 12, which is not a perfect square. However, we can express 12 as the product of 4 (which is a perfect square) and 3 (4 * 3 = 12).

Finally, we write the expression  [tex]\sqrt{4} * \sqrt{3,[/tex] which simplifies to [tex]2\sqrt{3,[/tex]

Thus, the simplified form of [tex]\sqrt{60}/\sqrt{5[/tex] is [tex]2\sqrt{3,[/tex], which cannot be simplified any further as [tex]\sqrt{3[/tex] is an irrational number and does not have a precise decimal representation.

It is always important to remember that when rounding is necessary, you should round the result up if the digit following the last significant digit is 5 or greater, and round it down if it is less than 5.

Answer:

square root of 72 is approximately 8.49

i hope that right!

Step-by-step explanation:

Answer: 1

Anything that goes to the 0 power is always going to be 1

To use the Distributive Property on the expression 8(5 - 1), you would multiply 8 by each term inside the parentheses, simplify, and perform the subtraction. The final evaluated result is 32.

The problem is asking to use the Distributive Property to simplify the mathematical expression and then evaluate it. The Distributive Property, in basic terms, indicates that multiplication distributes over addition or subtraction. So, for the expression 8(5 - 1), you would apply the Distributive Property as follows:

8 * 5 - 8 * 1

40 - 8

= 32

So, the equivalent expression is 40 - 8, and the evaluated result is 32.

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To find the exact values of cos(0), csc(0), and tan(0) given a point on the terminal side of 0, we can use the coordinates of the point to determine the values of the trigonometric functions.

To find the exact values of cos(0), csc(0), and tan(0) given that (-3,-2) is a point on the terminal side of 0, we can use the coordinates of the point to determine the values of the trigonometric functions.

First, we can find the value of cos(0) by dividing the x-coordinate (-3) by the distance from the origin, which is sqrt((-3)^2+(-2)^2). Therefore, cos(0) = -3 / sqrt(13).

Next, we can find the value of csc(0) by dividing 1 by the y-coordinate (-2). Therefore, csc(0) = 1 / -2 = -1/2.

Finally, we can find the value of tan(0) by dividing the y-coordinate (-2) by the x-coordinate (-3). Therefore, tan(0) = -2 / -3 = 2/3.

Answer:

12x+25

Step-by-step explanation:

7x+7+5x+15+3

12x+25

Answer:

About $0.10 per ounce

Step-by-step explanation:

12 pound costs $18.75. Lets find the cost per pound first:

Cost Per Pound = [tex]\frac{18.75}{12}=1.5625[/tex]

We know, there are 16 ounces in 1 pound.

We know 1 pound costs 1.5625

To find cost per ounce, we have to divide this by 16.

So,

Cost Per Ounce = [tex]\frac{1.5625}{16}=0.097[/tex]

Rounded to nearest cent, that would be 10 cents per ounce

Answer:

Use distributive property, add 3z to both sides, divide by -8 on both sides

Step-by-step explanation:

You have to do parenthesis first, then equal both sides, then divide

1. The reciprocal of 5 plus the reciprocal of 7 is the reciprocal of what number?

The reciprocal of 5 plus the reciprocal of 7 is the reciprocal of [tex]\frac{12}{35}[/tex]

1. The reciprocal of 5 plus the reciprocal of 7 is the reciprocal of what number?

From given question,

[tex]\text{ reciprocal of 5} = \frac{1}{5}[/tex]

[tex]\text{ reciprocal of 7} = \frac{1}{7}[/tex]

Given that,

reciprocal of 5 + reciprocal of 7 = ?

[tex]\frac{1}{5} + \frac{1}{7} = x[/tex]

On cross-multiplying we get,

[tex]\frac{1}{5} + \frac{1}{7} = \frac{7+5}{5 \times 7} = \frac{12}{35}[/tex]

Thus reciprocal is [tex]\frac{35}{12}[/tex]

So the reciprocal of 5 plus the reciprocal of 7 is the reciprocal of [tex]\frac{12}{35}[/tex]

2. The reciprocal of the product of two consecutive integers is 1/72

The value of two consecutive numbers are 8 and 9

Let the two consecutive integers be x and x + 1

Given that reciprocal of product of two consecutive integers is [tex]\frac{1}{72}[/tex]

product of two consecutive integers = x(x + 1) = [tex]x^2 + x[/tex]

reciprocal of the product of two consecutive integers = [tex]\frac{1}{72}[/tex]

[tex]\frac{1}{x^2 + x} = \frac{1}{72}\\\\x^2 + x = 72\\\\x^2 + x - 72 = 0[/tex]

Solve the above quadratic equation by grouping method

[tex]x^2 + x - 72 = 0\\\\x^2 -8x + 9x - 72 = 0\\\\x^2 + 9x + (-8x - 72) = 0\\\\x(x + 9) -8(x + 9) = 0\\\\(x + 9)(x - 8) = 0[/tex]

Thus x = -9 or 8

Ignoring negative value,

x = 8

Thus two consecutive integers are x = 8 and x + 1 = 8 + 1 = 9

8 and 9 are two consecutive integers

Answer:

y=\frac{5}{3}x-5

Step-by-step explanation:

Answer: x≤-2

Step-by-step explanation: Solve for x. (NUMBER LINE ATTACHED)

Hope this helps you out.

The solution of the inequality is shown in figure.

What is Inequality?

A relation by which we can compare two or more mathematical expression is called an inequality.

Given that;

The inequality is,

⇒ 5x + 3 ≤ - 7

Now,

Solve the inequality as;

⇒ 5x + 3 ≤ - 7

⇒ 5x + 3 - 3 ≤ - 7 - 3

⇒ 5x  ≤ - 10

⇒ 5x/5 ≤ - 10/5

⇒ x ≤ - 2

Thus, The solution of the inequality is;

⇒ x ≤ - 2

Therefore, The solution of the inequality is shown in figure.

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Divide the total number of cans by 6.

42 / 6 = 7

He bought 7 six packs.

Final answer:

Victor bought 7 six-packs of soda.

Explanation:

To find the number of six-packs of soda Victor bought, divide the total number of cans by 6. In this case, Victor bought 42 cans in total, so dividing 42 by 6 gives us 7. This means Victor bought 7 six-packs of soda.

1. Set up a ratio:

7 tagged / 350 fish = 250 tagged / x fish

Solve for x:

x = (350 * 250) / 7

x = 12,500 fish

2. Divide number of boys by the population ratio:

450 / 2/5 =  (450 *5) /2 = 2250 / 2 = 1125 total students.

3.  4 quarters = $1, so they have 24 quarters total.

The ratio 3:5 means for every 3 quarters there are 5 dimes.

24 quarters / 3 = 8

8 x 5 = 40 dimes.

(1)  The population of fish in the False river is 12500.

(2) There are 1125  total number of students in the school .

(3) There are 40 dimes in the bag.

(1) Number of fish tagged by Louisiana biologists =  250

On the next day a sample was collected from the False river

The number of fish in the sample = 350

Number of tagged fish in the sample =  7

Let the population of fish in the False river  = P

Takin the ratio we can

[tex]\rm \dfrac{7}{350}= \dfrac{250}{P} \\\\P = (250)(350)/(7)\\P = 12500[/tex]

So the population of fish in the False river = 12500

(2) The number of boys in the school = 450

Let the total number of students in the  school be B

According to the given condition

[tex]\rm \dfrac{2}{5}\times B = 450\\\\B = (450\times 5) /2 \\B = 2250/2 =1125[/tex]

So the total number of students in the school = 1125

(3) Let the number of dimes in the bag be x

According to the given condition we can write

[tex]\rm \dfrac{Number\; of\; quarters }{Number\; of\; dimes } = \dfrac{3}{5} ........(1)[/tex]

Also  it is given that there are $6 in quarters in the bag.

$1 = 4 quarters

So $6 has  [tex]\rm 4\times 6 = 24 \; quarters[/tex]

So we can put this value in equation (1)

[tex]\dfrac{24}{x} =\dfrac{3}{5} \\\\x = 40 dimes[/tex]

So we can conclude that there are 40 dimes in the bag.

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Answer:9

Step-by-step explanation:4

Answer:

7/15

Step-by-step explanation:

11+7+9+3= 30

11= red

3=yellow

11+3=14

=14/30

=7/15

Answer:

7/15

Step-by-step explanation:

Probability of an event is the number of possible outcome divided by the total outcome. It is a ratio. The probability that an event will or will not happen is 1 as those are the only two possibilities.

Given that the flower shop has 11 red roses, 7 pink roses, 9 white he roses , and 3 yellow roses in stock , the total number of flower available

= 11 + 7 + 9 + 3

= 30 flowers

The probability that a rose selected is ;

red = 11/30

yellow = 3/30

the probability they the selected rose is red or yellow

= 11/30 + 3/30

= 14/30

= 7/15

Answer:

the population of the city in the year 2035 is 126,226

Step-by-step explanation:

The population of a city is modeled by

[tex]P(t)= 78300(1.023 )^t[/tex]

P ( t ) represents the number of people and t is the number of years since 2014.

in the year 2014, the year t=0

we need to find the population in the year 2035

2035-2015= 21

so find population when t=21

[tex]P(t)= 78300(1.023 )^t[/tex]

[tex]P(21)= 78300(1.023 )^{21}=126226.36[/tex]

Answer

30+30+15+15+18+18

Step-by-step explanation:

The expression to calculate the surface area of the prism is 2 * (3 * 5 + 3 * 6 + 5* 6)

The given parameters are:

The surface area of a rectangular prism is:

Area = 2 * (Length * Width + Length * Height + Width * Height)

Substitute known values

Area = 2 * (3 * 5 + 3 * 6 + 5* 6)

Hence, the expression to calculate the surface area of the prism is 2 * (3 * 5 + 3 * 6 + 5* 6)

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Answer: 7 bags

Step-by-step explanation:

Total no. of oranges rotten - 12

To buy no. of bags to get   -  at least 40 good oranges

No. of oranges in a bag       - 8

40  +  12 = 52 oranges

As each bag contains 8 oranges and 52 is not divisible by 8 we end up taking the closest divisible number that is 54.

If we divide 54 by 8 we get 7.

Hence Max needs to buy 7 bags of oranges.

Note: As they have asked at least 40 good oranges

(2/3)²+5×2-4

(4/9)+5×2-4

(4/9)+10-4

10 4/9 - 4

6 4/9

answer: second choice

Answer:

n=8

Step-by-step explanation:

3n-5=19

3n=19+5

3n=24

n=24/3

n=8

Answer:

48 inches

Step-by-step explanation:

Dagne can jump 13.2 inches that is 27.5% of her height. Let x inches be Dagne's height.

Then

x inches - 100%

13.2 inches - 27.5%

Write a proportion:

[tex]\dfrac{x}{13.2}=\dfrac{100}{27.5}[/tex]

Cross multiply:

[tex]27.5x=13.2\cdot 100\\ \\27.5x=1,320\\ \\x=\dfrac{1,320}{27.5}\\ \\x=48\ inches[/tex]

Answer: The answer is 5 and 3/5 hours

Step-by-step explanation:

Answer:

5 and 3/5 hours

Step-by-step explanation: