Help me pls dont answer if you don’t know i will give brainliest

Answer:

x>25/2

(25/2,∞)

Step-by-step explanation:

Answer:

It would be D

Step-by-step explanation:

(a) The doubling time of the population is approximately 13.86 years., (b) It takes approximately 23.10 years for the population to triple in size, (c) It takes approximately 27.72 years for the population to quadruple in size.

To calculate the doubling time of the population, we need to find the time it takes for the population to double from its initial value. In this case, the initial population is 9 million.

(a) Doubling Time:

Let's set up an equation to find the doubling time. We know that when the population doubles, it will be 2 times the initial population.

2P(0) = P(t)

Substituting P(t) = 9e^(0.05t), we have:

2 * 9 = 9e^(0.05t)

Dividing both sides by 9:

2 = e^(0.05t)

To solve for t, we take the natural logarithm (ln) of both sides:

ln(2) = 0.05t

Now, we can isolate t by dividing both sides by 0.05:

t = ln(2) / 0.05

Using a calculator, we find:

t ≈ 13.86

Therefore, the doubling time of the population is approximately 13.86 years.

(b) Time to Triple the Population:

Similar to the doubling time, we need to find the time it takes for the population to triple from its initial value.

3P(0) = P(t)

3 * 9 = 9e^(0.05t)

Dividing both sides by 9:

3 = e^(0.05t)

Taking the natural logarithm of both sides:

ln(3) = 0.05t

Isolating t:

t = ln(3) / 0.05

Using a calculator, we find:

t ≈ 23.10

Therefore, it takes approximately 23.10 years for the population to triple in size.

(c) Time to Quadruple the Population:

Similarly, we need to find the time it takes for the population to quadruple from its initial value.

4P(0) = P(t)

4 * 9 = 9e^(0.05t)

Dividing both sides by 9:

4 = e^(0.05t)

Taking the natural logarithm of both sides:

ln(4) = 0.05t

Isolating t:

t = ln(4) / 0.05

Using a calculator, we find:

t ≈ 27.72

Therefore, it takes approximately 27.72 years for the population to quadruple in size.

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Answer:

what line

Step-by-step explanation:

what line cause i dont see one

Answer:

y=-\(\frac{1}{3} x+6\)

Step-by-step explanation:

Slope intercept form is y=mx+b. So, you solve for y by putting x to the other side and dividing by 6. In order it looks something like:

2x+6y=36
2x -2x +6y = 36 =2x
6y=36-2x

y=6-2/6x
y=6-1/3x

Answer:

Step-by-step explanation:

Answer:

51380000 mg

Step-by-step explanation:

10 - 3 = 7

7.34 x 7 = 51.38

1 kg = 1000000 mg

51.38 x 1000000 = 51380000

When \(7.34 \times 10^{-3} kg\) is converted to milligrams the result is 7340 mg.

Given, that kilograms to be converted to milligrams.

Multiplication: It is the basic mathematical operation among subtraction, division and addition. Multiplication follows associative and distributive property.

Exponential multiplication:

a) \(10^{-3} = \frac{1}{1000}\)

b) \(10^3 = 1000\)

Conversion factors:

1 Kg = 1000 grams

1 Gram = 100 milligrams

1 kg = 1000000 mg

Apply unitary method to convert Kg to mg.

1 kg = 1000000 mg

Multiply both sides by  \(7.34 \times 10^{-3} kg\)

\(7.34 \times 10^{-3} kg\) × 1 = \(7.34 \times 10^{-3} kg\) × 1000000

Here the kilograms is converted to equivalent milligrams.

\(7.34 \times 10^{-3} kg\) = 7340 milligrams

Thus the total milligrams in \(7.34 \times 10^{-3} kg\) are 7340 .

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Answer: 18 and 37

Step-by-step explanation:

The answers should be 18 and 37, I am very sorry if these answers are incorrect.

To write a division as a fraction: In the numerator write the dividend and in the denominator write the divisor:

Then, 4 divided into 3 is:

Answer:

Opposite sides are equal in length and opposite angles are equal in measure. To find the area of a parallelogram, multiply the base by the height. The formula is: A = B * H where B is the base, H is the height, and * means multiply.

I hope it's helpful!

Explanation:

The proof can be had by making use of the AAS congruence postulate (twice) and CPCTC.

We start by showing ΔPQY≅ΔPRX, then by showing ΔXQN≅ΔYRN. The proof is then a result of CPCTC.

1. PQ≅PR, ∠Q≅∠R . . . . given

2. ∠P≅∠P . . . . reflexive property of congruence

3. ΔPQY≅ΔPRX . . . . AAS congruence postulate

4. PX≅PY . . . . CPCTC

5. PX+XQ=PQ, PY+YR=PR . . . . segment sum theorem

6. PX+XQ = PY +YR . . . . substitution property

7. PX +XQ = PX +YR . . . . substitution property

8. XQ = YR . . . . subtraction property of equality

9. ∠XNQ≅∠YNR . . . . vertical angles are congruent

10. ΔXNQ≅ΔYNR . . . . AAS congruence postulate

11. XN ≅ YN . . . . CPCTC

__

Additional comment

You probably did steps 1-3 in part (a) of the problem.

Standard deviation normal distribution table or calculator to determine the probability of observing a z-score of 1.3 or higher.

The probability is approximately 0.0968, or 9.68%.

To determine the mean number of times the letter appears on a page, we can multiply the probability of the letter appearing (0.066) by the total number of characters on the page (2650):

\(Mean = 0.066 \times 2650 = 174.9\)

To calculate the standard deviation, we can use the formula:

Standard deviation = \(\sqrt(n \times p \times q)\)

n is the sample size (2650), p is the probability of success (0.066), and q is the probability of failure \((1 - p = 0.934)\).

Standard deviation = \(sqrt(2650 \times 0.066 \times 0.934) = 13.2\) (rounded to 1 decimal place)

Determine whether 192 occurrences of the letter on a page is unusual, we can use the z-score formula:

z = (x - mean) / standard deviation

x is the observed number of occurrences (192), mean is the expected number of occurrences (174.9), and standard deviation is the standard deviation we just calculated (13.2).

\(z = (192 - 174.9) / 13.2 = 1.3\)

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Answer:

The expression (2n)(2n + 1)(4n + 1)/6 - 2n(2n + 1) + 2n is equivalent to ∑i=1 to 2n (i-1)².

Step-by-step explanation:

The expression ∑i=1 to 2n (i-1)² represents the sum of (i-1)² for values of i ranging from 1 to 2n. We can simplify and rewrite this expression using properties of summation:

∑i=1 to 2n (i-1)² = ∑i=1 to 2n (i² - 2i + 1)

= ∑i=1 to 2n i² - ∑i=1 to 2n 2i + ∑i=1 to 2n 1

Now let's evaluate each term separately:

∑i=1 to 2n i²:

This represents the sum of the squares of i for values of i ranging from 1 to 2n. This can be expressed as the formula for the sum of squares:

∑i=1 to 2n i² = (2n)(2n + 1)(4n + 1)/6

∑i=1 to 2n 2i:

This represents the sum of 2i for values of i ranging from 1 to 2n. We can factor out the 2 and use the formula for the sum of the first n positive integers:

∑i=1 to 2n 2i = 2(2n)(2n + 1)/2 = 2n(2n + 1)

∑i=1 to 2n 1:

This represents the sum of 1 for values of i ranging from 1 to 2n. Since we are summing 1 a total of 2n times, this is simply 2n.

Putting it all together, we have:

∑i=1 to 2n (i-1)² = ∑i=1 to 2n i² - ∑i=1 to 2n 2i + ∑i=1 to 2n 1

= (2n)(2n + 1)(4n + 1)/6 - 2n(2n + 1) + 2n

= (2n)(2n + 1)(4n + 1)/6 - 2n(2n + 1) + 2n

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x+2x+x=d is solution set of a linear system whose augmented matrix.

What does matrix mean?

First statement

[ 1 2 3 | d][x]

[ 1 2 3]x=d

x+2x+3x=d

Second statement

Ax=d

Given that A = [ 1 2 3]

[ 1 2 3]x=d

x+2x+3x=d

x+2x+x=d

Then, they are going to have the same solution

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Answer:

54°

Step-by-step explanation:

∠A = 2x + 10, ∠C = 3x - 14

∠E + 266 = 360 (sum of angles around a point)

∠E = 360 - 266

∠E = 94°

AB is parallel to line BD. Lets draw a line cuts line AB and line BD to form ∠B and ∠D. Hence:

∠B + ∠D = 180° (sum of interior angles on the same side)

∠A + ∠B + ∠C + ∠D + ∠E = 540° (sum of angles in a pentagon)

2x + 10 + 3x - 14 + 94 + 180 = 540

5x + 270 = 540

5x = 540 - 270

5x = 270

x = 54°

Answer:

The answer is "\(\frac{3}{7}\)"

Step-by-step explanation:

Please find the complete question:

The dilation scale factor will be the same:

\(=\frac{\text{Picture to Center Gap}}{\text{Related pre-image distance to the middle}}\)

Throughout the picture, the distance is \(CP'=6\), while the equivalent distance is \(CP=14\). The factor of scale is then\(=\frac{CP'}{CP} =\frac{6}{14} =\frac{3}{7}\)

The decrease because if a factor of scale is below 1 and a factor of scale is higher than 1. Dilation is a reduction since \(\frac{3}{7}<1\), therefore the scale factor is \(\frac{3}{7}\).

The scale factor of the given dilation is; 6/14 and the dilation is a reduction

The image of the object undergoing transformation is missing and so i have attached it.

From the attached object, we se that CP = 14.

Also CP' = 6

Thus; Scale factor is 6/14

Now, reduction is reducing the dimensions while enlargement is increasing the dimensions by a scale factor.

Since the denominator of the scale factor is greater than the numerator, then there is a reduction.

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Answer:

12.649

Skills needed: Trigonometry

Step-by-step explanation:

1) We need to use one of the fundamentals of trigonometry, which is:

Soh Cah Toa

---> Soh = \(sin(\angle x) = \frac{opposite}{hypotenuse}\) (\(sin(\angle x) \) equals the side Opposite of it divided by the Hypotenuse -- sin is short for sine (pronounced as sign)

Soh = Sine Opposite Hypotenuse

---> Cah = \(cos(\angle x) = \frac{adjacent}{hypotenuse}\) (\(cos(\angle x)\) equals the side adjacent (not the hypotenuse) to the angle divided by the hypotenuse -- cos is short for cosine (pronounced as co-sign)

Cah = Cosine Adjacent Hypotenuse

---> Tan = \(tan(\angle x) = \frac{opposite}{adjacent}\) (\(tan(\angle x) \) equals the side opposite of it divided by the side (not hypotenuse) adjacent to it -- tan is short for tangent

Tan = Tangent Opposite Adjacent

2) In this case, we are solving for adjacent:

This is because \(\overline{BC}\) is next to \(\angle \theta\) and \(\overline{BC}\) is not the hypotenuse (\(\overline{AC}\) is the hypotenuse as it is opposite the right angle)

---> We are given opposite as side \(x\) is opposite \(\angle \theta\)

3) Let's plug it in:

\(\tan \angle x = \frac{opposite}{adjacent}\)

\(\angle \theta = 31, adjacent = 7.6, opposite = \overline{BC}\)

\(\tan 31 = \frac{7.6}{\overline{BC}}\) --> Here, we should multiply both sides by \(\overline{BC}\)

\(\overline{BC} * \tan 31 = 7.6\) --> To get \(\overline{BC}\) by itself, divide both sides by \(\tan 31\)

\(\overline{BC} = \frac{7.6}{tan 31}\)

You have to plug this into the calculator as you cannot mentally solve trig functions.

---> Plugging it into calc:\(\overline{BC} = \frac{7.6}{\tan 31} = 12.6485 \text{ rounded to the ten-thousandths place}\)

\(12.6485\) is rounded to the ten-thousandths, but the problem asks for 3 SF, so that would be \(12.649\) (rounded that 85 to 9 (or 90))

The number of nickels that Sonji has as per the given equation is 63.

We are given the information that Sonji has 21 dimes (which means that d=21). We can use the equation to find the number of nickels n.

0.10d + 0.05n = 5.25

0.10(21) + 0.05n = 5.25

2.10 + 0.05n = 5.25

0.05n = 3.15

n = 3.15 / 0.05

n = 315 / 5

n = 63

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Answer:

(5, 3)

Step-by-step explanation:

\(\vec{AB}=(2, 5) \\ \\ \vec{CD}=-\vec{DC}=-\vec{AB}=(-2, -5) \\ \\ \therefore D(7-2, 8-5)=(5, 3)\)

Answer:

6 × 28 = 168

Step-by-step explanation:

So, hermes have to work for 28 hours to get enough money for his video games system.

Answer:

42 ft

Step-by-step explanation:

body = x

tail = 7x

x + 7x = 48

8x = 48

Divide both sides by 8

x = 6

Tail

7x = 7(6)

7x = 42

Answer:

B, C, and E

Step-by-step explanation:

B because 0.75*10=7.5. C because 4*0.75=3. And E because 0.75 is how much each snickers bar is is that is the unit price

Answer:

3.507 x 107 in scientific notation.

Answer:

3.507 x 10^7 is the answer to your question.

If we are told that ab=0, then we can infer that either a or b (or both) must be equal to 0.

This is because when the product of two numbers is 0, at least one of the numbers must be 0 according to the zero product property.

One of the most crucial concepts for pupils to understand in maths and science is the zero product property.

The greatest educators, mathematicians, and recognized scientists in the fields of physics and chemistry have worked with Vedantu to provide their insights on the subject.

Their suggestions helped us develop materials for your understanding that would make it simple for you to put these ideas into practice.

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