Please help me find the side to x

Answer:

80 cm²

Step-by-step explanation:

Given 2 similar figures with sides in the ratio a : b , then

ratio of areas = a² : b²

Here ratio of sides = 7 : 14 = 1 : 2

ratio of areas = 1² : 2² = 1 : 4

Thus area of B is 4 times area of A

area of B = 4 × 20 = 80 cm²

Answer:

False

Step-by-step explanation:

−111−9  =  −121+17

−120 ≠ −104

The probability that a student will spend less than 3 hours studying in normal distribution is 0.3085.

The most significant probability distribution in statistics for independent, random variables is the normal distribution, sometimes referred to as the Gaussian distribution. In statistical reports, its well-known bell-shaped curve is generally recognized.

The majority of the observations are centered around the middle peak of the normal distribution, which is a continuous probability distribution that is symmetrical around its mean. The probabilities for values that are farther from the mean taper off equally in both directions. Extreme values in the distribution's two tails are likewise rare.

Given that the value of mean = 4 and the value of standard deviation is 2.

P(X < 3) = P (Z < 3 - 4 / 2)

= P (Z < -1/2)

= P(Z < -0.5)

= 0.3085

Hence, the probability that a student will spend less than 3 hours studying is 0.3085.

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Decision points

are represented in the flowchart using a diamond symbol. Answer: D. Diamond.

A

flowchart

is a kind of diagram that is used to represent an algorithm, workflow, or process. A flowchart comprises different shapes, which represent distinct steps or activities in a procedure. Flowcharts are used in different fields, such as education,

engineering

, programming, and business, to demonstrate decision making, problem-solving, process control, and project management.

Flowcharts are used to:

Visualize

processes and workflows that need to be organized or improved

Communicate a sequence of steps that are essential to complete a project

Identify the root cause of a problem

Illustrate the steps of a procedure to new employees or staff members

A decision point in a flowchart is a point where the sequence of flowchart changes its direction based on the

outcomes

of the preceding steps. Decision points are represented in the flowchart using a diamond symbol.

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Since the improper integral converges to a finite value\((3e^{-25})\) the infinite series also converges by the Integral Test.

To use the Integral Test to determine if the given infinite series is convergent, we first need to find the corresponding integrand and improper integral. The infinite series is:

\(\sum_{n=5}^{infinity}  6ne^{-n^2}\)
The corresponding integrand is:

\(f(x) = 6xe^{-x^2}\)

Now, we need to find the value of the improper integral:

\(\int _5^{infinity} 6xe^{-x^2}dx\)

To evaluate this integral, we'll first find the antiderivative using substitution. Let u = -x^2, so du = -2xdx. Then, we have:

∫ (-3)e^u du = -3∫e^u du

The antiderivative of e^u is e^u. So, we get:

-3e^u = -3e^(-x^2)

Now we'll evaluate the limit as the upper bound approaches infinity:

\(Limit _{ t=infinity} [ -3e^{-t^2} ] - ( -3e^{-5^2} \\= Limit_{ t=infinity} [ -3e^{-t^2}+ 3e^{-25) ]\)
As t approaches infinity, e^(-t^2) approaches 0:

\(-3(0) + 3e^{-25)} = 3e^{-25}\)

Since the improper integral converges to a finite value\((3e^{-25})\) the infinite series also converges by the Integral Test.

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Answer:

I'm not 100% sure but I think c is 55°

The binary and decimal form of 5613base 10 in base 8​ is  (5613)₁₀ = (12755)₈

While decimal numbers use the 10 digits 0, 1, 2, 3, 4, 5, 6, 7, and 9, octal numbers only use the eight digits 0, 1, 2, 3, 4, and 5.

5613 / 8 = 701, leaving only 5.

8 divided by 701 equals 87, leaving 5 as the remainder.

87 / 8 = 10, leaving a value of 7.

10/8 = 1, leaving 2 as the undetermined number.

1/8 equals 0, hence the final result is 1.

The remaining numbers are put together in reverse order to provide the required Octal number, which is 12755.

Therefore,(5613)₁₀ = (12755)₈

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Answer:

.933 mph

Step-by-step explanation:

Answer: 3 39/40

Step-by-step explanation: I gotchu bro

(っ◔◡◔)っ ♥ Answer:

⁎    D. 3 39/40        

Explanation:

⁎ 15/4 - 2/5

75/20 - 8/20 = 67/20

67/20 + 5/8

134/40 + 25/40 = 159/40

⁎ Simplified :   3 39/40  

A word from me:

- Please mark me brainiest, trying to achieve the next rank!

- Hope you have a wonderful & great day! ♥ ヾ(•ω•`)o

Answer:

Step-by-step explanation:

We worry about 2 things:

-terms power

-coefficient for each term

(3x-4)^5, has 2 terms 3x and -4

-Start with the first term to the highest power 5 and second term to the lowest power 0, then the high power goes down and low power increases until the first term has the lowest power 0 and the second term has the highest power 5.

-The coefficients for each term we take it from the Pascal triangle.

For the the power 5 the coefficients are 1, 5, 10, 10, 5, 1

\((3x-4)^{5} = 1*(3x)^{5} *(-4)^{0} +5*(3x)^{4} *(-4)^{1} +10*(3x)^{3} *(-4)^{2}+10*(3x)^{2} *(-4)^{3}+5*(3x)^{1} *(-4)^{4}+1*(3x)^{0} *(-4)^{5}\)

Simplify:

\((3x-4)^{5} = 3^{5} x^{5} -20*3^{4} x^{4} +160*3^{3} x^{3}-640*3^{2} x^{2}+1280*3x-1024\)

\((3x-4)^{5} = 243 x^{5} -1,620x^{4} +4,320 x^{3}-5,760x^{2}+3,840x-1024\)

Answer:

The answer is 8.

Value of equation log (3x+2) = log2(4x-6) is 2.8

An equation is a formula that expresses equality  by connecting two expressions with an equal sign =. It consists of variables, constants and coefficients

given equation,

log(3x+2) = log2(4x-6)

Taking antilog on both sides

3x + 2 = 2(4x - 6)

3x + 2 = 8x - 12

8x - 3x = 12 + 2

5x = 14

x = 14/5

x = 2.8

Hence, 2.8 is the value of equation log (3x+2) = log2(4x-6).

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The number of pennies there are, given the types of coins you have are 5 pennies.

Since we have 5 dimes, we can set up the equation:

1/4 = 5/x

where x is the total number of coins.

Solving for x, we can cross-multiply:

1x = 45

x = 20

So we have a total of 20 coins.

Subtracting the number of quarters (3), dimes (5), and nickels (7), we get:

20 - 3 - 5 - 7 = 5 pennies

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Deone's length was 19.5 inches at birth. Assuming his development proceeds normally, his length should be about 29.5 inches by his first birthday.

We know that According to the Centers for Disease Control and Prevention (CDC), the average length for a boy at birth is around 20 inches, and the average length for a boy at one year of age is around 30 inches.

To estimate Deone's length at one year of age, we use the average growth rate between birth and one year, which is approximately 10 inches.

So , we add 10 inches to Deone's length at birth of 19.5 inches to estimate his length at one year of age:

⇒ Estimated length at 1 year = 19.5 inches + 10 inches = 29.5 inches

Therefore, Deone's length should be about 29.5 inches by his first birthday, assuming that his development proceeds normally.

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Answer:

x = 24

Step-by-step explanation:

x/x+20=30/55

(x)(55)=(30)(x+30)

55x= 30x+600

-30x -30x

25x+600

25x/25=600/25

x=24

The option that describes the graph of the inequality is:

"number line with open circle on point negative 5 and arrow shaded to the left"

Here we have the following inequality:

2.5 < -0.5*x

First, need to isolate the variable which is x, to do that we divide both sides by -0.5

Remember that because we divide by a negative number, we need to change the direction of the inequality.

2.5/-0.5 > -0.5*x/-0.5

-5 > x

The graph of this inequality will be a number line with an open circle at x = -5, and a line that extends to the left of it, because x is smaller than -5.

Thus the correct option is:

"number line with open circle on point negative 5 and arrow shaded to the left"

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Answer: B.

Step-by-step explanation: It's B, -5 with the arrow pointing to the left.

The clerk walked approximately 0.371π meters during the 132 minutes of delivering along the hallway.

To find the number of 3-meter segments the clerk walked during the 132 minutes, we need to integrate the velocity function over the given time interval.

v(t) = 4π sin(t)

The clerk starts at one end and takes 13 minutes to finish deliveries, so the time interval is from t = 0 to t = 13.

To calculate the distance walked, we integrate the absolute value of the velocity function over the given interval:

Distance = ∫[0, 13] |v(t)| dt

Let's calculate the integral:

Distance = ∫[0, 13] |4π sin(t)| dt

Since the absolute value of sin(t) is positive for the given interval, we can simplify the integral to:

Distance = 4π ∫[0, 13] sin(t) dt

Using the integral of sin(t), which is -cos(t), the expression becomes:

Distance = -4π cos(t) |[0, 13]

Now we can evaluate the integral over the given interval:

Distance = -4π (cos(13) - cos(0))

Simplifying further:

Distance = -4π (cos(13) - 1)

Calculating the value:

Distance ≈ -4π (0.907 - 1)

Distance ≈ -4π (-0.093)

Distance ≈ 0.371π meters

Therefore, the clerk walked approximately 0.371π meters during the 132 minutes.

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Answer:

32n = 100 - 20

n = 2.5

he purchased 2 sweaters

Step-by-step explanation:

32n = 100 - 20

If Favian originally had $100 but spent $20 on a belt, he only had 80 left, meaning that 80 = 32n which means that he was able to but 2 sweaters and got $16 back. Therefore the formula would be 32n = 100 - 20

The formula for the number of sweaters will be 32n = 100 – 20.

A linear system is one in which the parameter in the equation has a degree of one. It might have one, two, or even more variables.

Favian received a $100 gift card to a clothing store.

Using only the gift card, he was able to purchase n sweaters that cost $32 each and 1 belt for $20.

If there was no tax on the sweaters and belt,

Then the equation will be

32n + 1 x 20 = 100

    32n + 20 = 100

             32n = 80

                 n = 2.5 ≈ 2

If Favian originally had $100 but spent $20 on a belt, he only had 80 left, meaning that 80 = 32n, which means that he was able to but 2 sweaters and got $16 back.

Therefore, the formula would be 32n = 100 – 20.

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Answer:

f(x) = log (x-5)

Step-by-step explanation:

__________

f(x) = log(x - 5) is the  function has an asymptote at x = 5 and an x-intercept of (6,0)

A relation is a function if it has only One y-value for each x-value.

we need to find the function which has an asymptote at x = 5 and an x-intercept of (6,0)

An asymptote is a line that the graph of a function approaches as either x or y go to positive or negative infinity.

There are three types of asymptotes: vertical, horizontal and oblique.

The asymptotes are lines, they are written as equations of lines. The vertical asymptotes are x = 5.

f(x) = log(x - 5) is the  function has an asymptote at x = 5 and an x-intercept of (6,0)

Hence, f(x) = log(x - 5) is the  function has an asymptote at x = 5 and an x-intercept of (6,0)

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The given hypothesis is that the proportion of people who write with their left hand is equal to 0.24.

Type I error is rejecting a true null hypothesis, while type II error is failing to reject a false null hypothesis.

Option C is a type I error as it rejects the claim that the proportion of people who write with their left hand is 0.24 when the proportion is actually 0.24, which means the null hypothesis is true.

Option D is a type II error as it fails to reject the claim that the proportion of people who write with their left hand is 0.24 when the proportion is actually different from 0.24, which means the null hypothesis is false.

In conclusion, type I error is rejecting a true null hypothesis, and type II error is failing to reject a false null hypothesis in hypothesis testing.
In hypothesis testing, we have two types of errors: Type I error and Type II error.

Type I error occurs when we reject the null hypothesis when it is actually true. In this case, the null hypothesis is that the proportion of people who write with their left hand is equal to 0.24. Therefore, a Type I error corresponds to option C: Reject the claim that the proportion of people who write with their left hand is 0.24 when the proportion is actually 0.24.

Type II error occurs when we fail to reject the null hypothesis when it is actually false. In this case, the null hypothesis is that the proportion of people who write with their left hand is equal to 0.24. Therefore, a Type II error corresponds to option D: Fail to reject the claim that the proportion of people who write with their left hand is 0.24 when the proportion is actually different from 0.24.

To summarize:
- Type I error: Option C
- Type II error: Option D

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Answer:

  f(x) = x +3

Step-by-step explanation:

The first differences for adjacent x-values are all 1, so this is a linear function. Because those differences are all 1, it is a linear function with a slope of 1. We observe that f(0) = 3, so that is the y-intercept.

__

The slope-intercept form of a linear function is ...

  y = mx + b . . . . . where m is the slope (1) and b is the y-intercept (3).

A suitable function rule is ...

  f(x) = x +3

Answer:

61

Step-by-step explanation:

46 then you have to add another 15 feet for underground and you get 61 because it is asking form the roof to the basement floor

hope this helps  

Answer:

It should take 3.43 days for the two of them to paint the house if they work together.

Step-by-step explanation:

The together rate is the sum of each separate rate.

In this problem:

Together rate: 1/x

Adam's rate: 1/8

Judy's rate: 1/6.

So

Together rate = Adam's rate + Judy's rate

\(\frac{1}{x} = \frac{1}{8} + \frac{1}{6}\)

\(\frac{1}{x} = \frac{3 + 4}{24}\)

\(\frac{1}{x} = \frac{7}{24}\)

\(7x = 24\)

\(x = \frac{24}{7}\)

\(x = 3.43\)

It should take 3.43 days for the two of them to paint the house if they work together.

On solving the provided question, we can say that the approximate amperage setting be if a welder were set to the high range would be 350 amps.

The variable's range is obtained by finding its largest observed value (maximum) and subtracting its smallest observed value (minimum). Variational bounds or possible range: various steel prices; various styles; The extent or magnitude of a procedure or action: insight. the maximum or expected range of a weapon's projectile. The range of a list or set is the number between the minimum and maximum. Prior to identifying the region, align all the numbers. Remove (remove) the lowest number from the highest number next. The list's range is provided in the solution.The solution provides the list's range.

here,

the approximate amperage setting be if a welder were set to the high range would be 350 amps

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The coordinates are simple. Hope you understand this and you can draw it out.

Answer:

The answer would be A. It is the population PER YEAR, so it would not be C or D because the population change is only negative, and -2,500,000 people/year is way too much. It must be A, -83,333 people/year. Hope I helped!

Answer:

x= 12

Step-by-step explanation:

12÷6=2

Answer:

$500

Step-by-step explanation:

100-12=88

88/100=440/x

88x=100(440)

88x=44000

/88.  /88

x=500

hopes this helps

Answer:

vegetarians= 28

chickens= 44

Step-by-step explanation:

let the number of vegetarians be x

and chickens be y

So

x+2.7y=119.6----------1

x+y=72--------------2

from 2, x= 72-y

put x= 72-y in 1

72-y+2.7y=119.6

-y+2.7y=119.6-72

1.7y=47.6

divide both sides by 1.7

y=47.6/1.7

y=28

put y=28 in 1

x+28=72

y= 72-28

y=44

Answer:

Step-by-step explanation:

1. X=11

Answer:

First page

x=11

y=-15

Second page

x=26

x=10

Third page

x=36

x=88

fourth page

x=81

n=36

fifth page

x=10

x=2

Step-by-step explanation:

Hope this helps

can you mark brainliest it would really help me thank you