need help will give brainliest ​

Answer:

3x

Step-by-step explanation:

If Dan is x years old and Olly is 3 times as old, that means that Olly's age is 3 * x or 3x for short.

Answer:

3x

Step-by-step explanation:

If Dan is x years old and Olly is 3 times old as Dan, then the expression is 3x.

Answer:

The greatest prime number less than 50 is 47

The expressions are simplified to;

1. 72n² + 63n

2. 18t - 18t²

3. -18b² - 18b

4. -56r - 21r²

5. -6m + 9m²

Algebraic expressions are simply described as expressions that are known to consist of coefficients of variables, variables, constants, terms, and factors.

These algebraic expressions are also made up of mathematical or arithmetic operations.

These operations are;

From the information given, we have;

1. -9n (-8n -7)

expand the bracket

72n² + 63n

2. -2t(-9 + 9t)

expand the bracket

18t - 18t²

3. -3b(6b + 6)

expand the bracket

-18b² - 18b

4. -7r(8 + 3r)

expand the bracket

-56r - 21r²

5. 3m(-2 + 3m)

expand the bracket

-6m + 9m²

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The expression that is equivalent to the expression 2ˣ⁺⁴ is 16(2ˣ)

From the question, we have the following parameters that can be used in our computation:

2ˣ⁺⁴

The above expression is an exponential expression with the following properties

When the above expression is expanded, we have

2ˣ⁺⁴ = 2ˣ * 2⁴

Evaluate the expression 2 exponent 4

So, we have the following representation

2ˣ⁺⁴ = 2ˣ * 16

Rewrite as follows

2ˣ⁺⁴ = 16 * 2ˣ

This gives

2ˣ⁺⁴ = 16(2ˣ)

Hence, the expression that is equivalent to the expression is 16(2ˣ)

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The solution to the integral ∫ [csc x · (cot x + csc x)] dx is - (csc x + cot x) + C. (Correct choice: A)

In this problem we find the case of an integral involving trigonometric functions, this can be solved quickly by means of algebra properties and integral tables. Integral tables are an useful resource to find the result of integrals that require a lot of time to be solved.

First, write the function within the integration operator and simplify by algebra properties:

csc x · (cot x + csc x)

csc x · cot x + csc² x

Second, rewrite the integral by integral properties:

∫ [csc x · (cot x + csc x)] dx = ∫ csc x · cot x dx + ∫ csc² x dx

Third, use integral tables to find the solution to the integral:

∫ [csc x · (cot x + csc x)] dx = - csc x - cot x + C

∫ [csc x · (cot x + csc x)] dx = - (csc x + cot x) + C

Where is C is the integration constant.

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Answer:

99 yeah yeah

Step-by-step explanation:

okayyyyyyy

Answer:

20 tickets each will have to bought with fast pass so that the total cost is equal to that of each other.

Step-by-step explanation:

Entry fee for The Great Adventure theme park = $15

Charge for fast pass at each ride = $1.50

Entry fee for The Big Thicket amusement park = $15

Charge for fast pass at each ride = $1.00

Let the number of ride tickets purchased with Fast pass = \(x\)

As per question statement, the total cost at each will be equal to that of each other.

Writing in the equation form, we get:

$15 + $1.50 \(\times\) \(x\) = $25 + $1.00 \(\times\) \(x\)

\(\Rightarrow 1.50x -1.00x = 25 -15\\\Rightarrow 0.50x = 10\\\Rightarrow x = 20\)

Therefore, 20 tickets each will have to bought with fast pass so that the total cost is equal to that of each other.

Rewrite the function using the change-of-base identity as

\(e^{x^2} \log_{10}(2x) = e^{x^2} \dfrac{\ln(2x)}{\ln(10)}\)

Apply the product rule:

\(\left(e^{x^2} \log_{10}(2x)\right)' = \left(e^{x^2}\right)' \dfrac{\ln(2x)}{\ln(10)} + e^{x^2} \left(\dfrac{\ln(2x)}{\ln(10)}\right)'\)

Use the chain rule:

\(\left(e^{x^2} \log_{10}(2x)\right)' = e^{x^2}\left(x^2\right)' \dfrac{\ln(2x)}{\ln(10)} + e^{x^2} \dfrac{(2x)'}{2\ln(10)x}\)

Compute the remaining derivatives:

\(\left(e^{x^2} \log_{10}(2x)\right)' = 2xe^{x^2} \dfrac{\ln(2x)}{\ln(10)} + e^{x^2} \dfrac2{2\ln(10)x} = e^{x^2}\left(\dfrac{2x\ln(2x)}{\ln(10)} + \dfrac1{\ln(10)x}\right)\)

If you like, you can convert back to base-10 logarithms:

ln(2x) / ln(10) = log₁₀(2x)

1 / ln(10) = ln(e) / ln(10) = log₁₀(e)

Then

\(\left(e^{x^2} \log_{10}(2x)\right)' = e^{x^2}\left(2x\log_{10}(2x)+\frac{\log_{10}(e)}x\right)\)

Answer:

B

Step-by-step explanation:

bbbbbb brainless me

Q = 91°

Step-by-step explanation:

Note how the angles correspond to each of the shapes:

J ---> S

G ---> R

H ---> Q

I ----> P

Since J = 55°, we can see that S is also 55°. With H = 91°, this means that Q is also 91°

Answer:

9/5 feet if they want an improper fraction

Step-by-step explanation:

p = 2l + 2w

2(7/10) = 14/10

rewrite 1/5 as 2/10

2(2/10) = 4/10

14/10 + 4/10 = 18/10 feet or simplified to 9/5 feet if they want an improper fraction

The slope field for the differential equation would be D . Graph D .

A slope field provides a pictorial representation of differential equations that displays the magnitude and direction of the derivative or slope for solution curves at various points in the plane .

The length of line segments represents the magnitude, while the direction indicates the sign of the slope.

The equation given is y = 2 y + x which means that the slope is positive. This is why we can tell that Graph D has the correct slope field as it goes up for positive.

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Answer:

3.75 cm²

Step-by-step explanation:

Area of a triangle = 1/2bh = 1/2(2.5)(3) = 3.75 cm²

The answer is:

11

Hopefully this is right

Answer:

11

Step-by-step explanation:

\(4^{2}\)-3*4+7 = 16 -12+7 = 4+7 = 11

Answer: Shade 6 pieces

Step-by-step explanation:

Because 2/5 of 15 is 6

Answer:

Product of 6 and a number. y÷9.

The sequence of the number of circles indicates that for the 10th case,  the number of circles are; 111 circles on the lower left and 111 circles on the top right

Please find attached a drawing of the pattern for the 10th case, created with MS Word

A sequence is an orderly arrangement of values or objects following a specified pattern.

The first pattern indicates that the number of circles in the first column on the left are 2. The number of circles located in the second row from the left side are 3

The second pattern indicates that the number of circles in the first column on the left are 3. The number of circles located in the second row from the left side are 4

The sequence of pattern in the nth case is therefore;

The number of circles in the first column on the left in the nth case are n + 1. The number of circles located in the second row from the left side are n + 2, and the number of squares circles between the column on the left and the row of circles on the top are n each, which indicates;

The number of circles in the first column on the left in the 10th case are 10 + 1 = 11. The number of circles located in the second row from the left side are 10 + 2 = 12

The dimensions of the square of circles to the left of the first column and above which the horizontal row of circles at the top are located are each 10 units wide and 10 units in height

Please find attached the drawing of case 10 creates with MS Word

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Answer:

option B

Step-by-step explanation:

180-(43+75)= 62

Si hay 15 niños en una clase de 25 estudiantes, ¿cuál es la proporción de niñas y niños en la clase?​

Let

x -------> number of boys

y -----> number of girls

we have that

x+y=25 -------> equation A

x=15

substitute the value of x in equation A

15+y=25

y=25-15

y=10

the ratio of girls to boys is

ratio=y/x

ratio=10/15

simplify

Answer:

Hi there!

Your answer is

(C-12)/A = M

Step-by-step explanation

c=12+a * m

SOLVE FOR M!

C=12+AM

-12

C-12+AM

Divide out A to isolate M

(C-12)/A = M

The equation that can be used to find the number of minutes[m] a customer used is -   m = (c - 12)/a

Equation rearrangement is a process of arranging the equation parameters in terms of a specific parameter.

Given is a phone company that charges a base fee of $12 per month plus an additional charge per minute. The monthly phone charge cost [c] can be represented by the equation: c = 12 + a x m, where [a] is the additional charge per minute, and [m] is the number of minutes used.

The given equation is -

c = 12 + a x m

Since, we know the values of [a] and [c], we can solve for [m] as follows -

c = 12 + a x m

c - 12 = a x m

m = (c - 12)/a

Therefore, the equation that can be used to find the number of minutes[m] a customer used is -

m = (c - 12)/a

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Answer:

9 1/2

Step-by-step explanation:

19/2=19.5

Answer:

y=-28 and x=6

Step-by-step explanation:

y=-6x+8...... eqn(1)

7x+2y=-14.......eqn(2)

Two times equation (1)

2y=-12x+16..... eqn(3)

2y=-14-7x........ eqn (2)

eqn(3) - eqn(2)

0=-5x+30

5x=30

x=6

from eqn (1) where x=6

y=-6(6)+8

y= -36+8

y=-28

Answer:

Let us consider we are given.1.54 and 2.37.

So here for 1.54 you can do one set of the 100 and then 5 tenths and 4 hundredths.as well as for the 2.37 you can to 2 hundreds and 3 tenths as well as the 7 hundredths. So here we are adding these numbers 1.54 + 2.37 is 3.91.so answer is 3.91. You can do 3 hundreds and 9 tenths and 1 hundredths.

Step-by-step explanation:

5, 8, 8, 5 has a population standard deviation of 3

Given,

The population is

{5, 8, 8, 5}

The population's mean is calculated as follows:

Sum of terms / Number of terms

Calculate the values and then replace them in the equation.

Sum equals 5 + 8 + 8 + 5 = 26

Number of terms = 4

The population's average is 26 / 4 = 6.5

The population's variance is equal to (5 - 6.5)² + (8 - 6.5) (8 - 6.5)² + (8 - 6.5) (8 - 6.5)² + (5 - 6.5)²

= (-1.5) (-1.5)² + (1.5) (1.5)² + 1.5² + (-1.5) (-1.5)²

= 2.25 + 2.25 + 2.25 + 2.25

= 9

The population's standard deviation is equal to

= 3

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The money will double in value in approximately 11.6 years.

From the question, we have the following parameters that can be used in our computation:

When the money doubles, the amount is

A = 900 * 2

A = 1800

The compound interest formula is given as

A = P(1 + r/n)^nt

Also from the question, we have

n = 12

This is so because the loan is compounded 12 times in a year as a result of being compounded monthly

Solving further, we replace the variables with their values in the above equation

1800 = 900 * (1 + (6%)/12)^(t*12)

Divide both sides by 900

2 = (1 + (6%)/12)^(t*12)

Also, we have

2 = (1.005)^(t*12)

Take the logarithm of both sides

12t = log(2)/log(1.005)

Evaluate the quotients

12t = 139

Divide both sides by 12

t = 11.6

Hence, the number of years is 11.6 years

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