a pentagon has a side of 5cm, what is the perimeter of the pentagon

Answer:

D- 5hrs

Step-by-step explanation:

If the family can hike 3 miles per hour,
for 15 miles: 15/3 = 5 hours.

Every hour they cover 3 miles per hour, so to cover 15 miles, they will take 5 hours

Answer:

D. 5 hours

Step-by-step explanation:

3 miles per 1 hour so 3/1

15 miles per x hours so 15/x

3/1 = 15/x or 3 = 15/x

get x by itself so

3 divided by 3 and 15 divided by 3

x = 5 hours

Answer:

\(a_n=a_{n-1}-4.\)

Step-by-step explanation:

1) if the given sequence is 9;5;1;-3, then a₁=9; a₂=5; a₃=1 and a₄=-3 and

2) the difference is -4.

3) if the difference is -4, then the correct answer is A: aₙ=aₙ₋₁ - 4.

Answer: mean = 55

Step-by-step explanation:

Distance between 64 and 82 = 18

Each standard deviation is worth 9 units.

So 64 - 9 = 55(mean)

Or use m= x-zq

Absolute value represents a value's distance from zero (0) on the number line. It is expressed using a pair of vertical bars. In the order of operations, absolute value signs are considered like parenthesis and other grouping symbols. We complete the operations inside the absolute value signs first to get a single number. Then we take the absolute value of the number at the same time we evaluate exponents in the expression.

A number line can be defined as a type of graph with a graduated straight line which contains both positive and negative numerical values (numbers) that are placed at equal intervals along its length.

An absolute value function can be defined as a type of function that consist of an algebraic expression, which placed within absolute value symbols.

Mathematically, the standard form of the equation for an absolute value function is given by:

y = a|x - h| +k.

Where:

h and k are the vertex of the graph.

Absolute value represents a value's distance from zero (0) on the number line. Also, it is typically expressed using a pair of vertical bars. In the order of operations, absolute value signs are considered like parenthesis and other grouping symbols such as brackets.

Furthermore, you should complete the operations inside the absolute value signs first to get a single number. Then, you take the absolute value of the number at the same time when you evaluate exponents in the expression.

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The bootstrap method of constructing confidence intervals can be used to estimate any parameter of interest, including a population mean, median, or standard deviation.

The basic idea behind the bootstrap method is to repeatedly resample the available data to create a large number of simulated datasets. From these simulated datasets, one can compute the statistic of interest (e.g., mean, median, standard deviation) and construct a confidence interval by determining the range of values that includes a specified percentage of the simulated statistics. This approach is particularly useful when the population distribution is unknown or when the sample size is small, as it allows one to obtain more accurate estimates of population parameters and to assess the variability of these estimates.
Hi! The bootstrap method of constructing confidence intervals can be used to estimate any parameter, including a population mean, a population median, and a population standard deviation. This technique allows for the estimation of various population parameters by resampling and simulating from the original sample data.

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Answer:

x=2.4

y=5.6

Step-by-step explanation:

x=8-y

3*(8-y)-0.5y=10

24-3y+0.5y=10

-2.5y=-14

y=5.6

8-5.6=2.4

Answer:

-47(-35)(-73)

1645×-73

-120 085

ans: -120 085

Answer:

-47(-35)(-73)

1645×-73

-120 085

ans: -120 085

Step-by-step explanation:

9.9.9.9 is the expression  which is equivalent to 3 the power of 8

The given expression is 3⁸

We have to find the equivalent expression of  3⁸

Equivalent expressions are expressions that work the same even though they look different.

=\(3^2^\times^4\)

=(3²)⁴

=3²×3²×3²×3²

=9×9×9×9

=9.9.9.9

Hence, 9.9.9.9 is the expression  equivalent to 3 the power of 8

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Answer:

Step-by-step explanation:

According to the table, each value of y (dependent variable) is twice the corresponding value of x (independent variable).

This can be shown as

Correct choice is 2 times

A regular polygon with an interior angle of 162° has 20 sides. To calculate the number of sides in a regular polygon given the measure of an interior angle.

We can use the formula:

n = 360° / (180° - A)

where n is the number of sides and A is the measure of the interior angle.

For an interior angle of 160°:

n = 360° / (180° - 160°) = 360° / 20° = 18

Therefore, a regular polygon with an interior angle of 160° has 18 sides.

For an interior angle of 162°:

n = 360° / (180° - 162°) = 360° / 18° = 20

Therefore, a regular polygon with an interior angle of 162° has 20 sides.

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The second-smallest positive integer that, when divided by 3, leaves a remainder of 2, and when divided by 7, leaves a remainder of 3 is 38

Given that,

We have to find the second-smallest positive number that, when divided by 3, leaves a remainder of 2, and when divided by 7, leaves a remainder of 3.

We know that,

We get equations as

N = 3a + 2

N = 7b + 3

Subtracting these equations we have that

3a - 7b - 1  = 0

3a - 7b =  1

So,

a=12 and b=5

The second integer we get is 38

Therefore, the second-smallest positive number that, when divided by 3, leaves a remainder of 2, and when divided by 7, leaves a remainder of 3 is 38

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Answer:

B. 7

Step-by-step explanation:

\(I=Prt \\ \\ 196=700(0.04)t \\ \\ 196=28t \\ \\ t=7\)

We will find the values as follows:

*Discount:

So, the discount is $6.

*Sale price:

So, the sale price is $14.

why is 20/2 bigger than 25/15​?

because 20/10 = 2

and 25/15 = 5/3 or 1.66

2 is bigger than 1.66

Answer:

75

Step-by-step explanation:

Answer:

$90

Step-by-step explanation:

First you find the total area of the shape:

9ft times 6 ft times 5 ft= 270 ft

divide 270 ft by 3 to get the amount of money that Maya will pay.

270 divided by 3 is 90

so the answ er is $90

No, you can’t multiply a monomial and binomial together and have a product of a monomial.

The first step is to calculate the total area of 600 bricks.

Area of one brick = 12 inches x 18 inches = 216 square inches

Area of 600 bricks = 600 x 216 = 129,600 square inches

Next, we need to convert the height of the wall from feet to inches since the area of the bricks is in square inches.

10 feet = 120 inches

Now, we can divide the total area of the bricks by the height of the wall to find the length of the wall.

Length of the wall = Area of 600 bricks / Height of the wall
Length of the wall = 129,600 square inches / 120 inches
Length of the wall = 1080 inches

Finally, we can convert the length of the wall back to feet by dividing by 12 since there are 12 inches in a foot.

Length of the wall = 1080 inches / 12 inches/foot
Length of the wall = 90 feet

Therefore, the length of the wall is 90 feet.

To solve this problem, we need to use the formula for calculating area which is length x width. We also need to convert units from feet to inches and vice versa as necessary to ensure we are working with the same units throughout the problem.

The length of the wall is 90 feet.

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Answer:

her brother is 9

Step-by-step explanation:

21-3=18   18 divided by 2 = 9

Answer:

Genevieve's brother is 9 years old

Step-by-step explanation:

The equation (Genevieve "G", the brother "B")

\(G=2B+3\)

\(21=2B+3\)

\(21-3=2B\)

\(18=2B\)

\(\frac{18}{2} =B\)

\(9=B\)

Hope this helps

A drop of water is denser than a ping-pong ball.

Usually, water is made of particles that are firmly pressed together. In differentiation, plastic (the material ping pong balls are made of) may be a lightweight fabric and the particles are not as firmly stuffed together.

The thickness of a ping pong ball is 0.0840 g/cm³, though water’s thickness is 997 kg/m³. Subsequently, ping pong balls aren’t about as thick as water and will continuously coast and surface greatly quickly.

The ping pong ball appears to oppose gravity and coast within the air.

Ping-pong balls drift within the water since they are amazingly lightweight, empty, and filled with air. Too, the water’s surface pressure makes it simple for the ping pong ball to drift.

In expansion, water is denser than ping pong balls, making them look for the most noteworthy point of water.

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The sound which we hear when the pig pong ball is bounced on the floor

is 19.48 DB

The repeating of sounds, especially in rhyme, is the form of repetition that most people connect with poetry. Alliteration, assonance, and onomatopoeia are other sound patterns in poetry that give additional meaning in addition to rhyme. Every one of these audio elements has a certain purpose in a poem.

a) \(\sum \ log(n)\)

by expanding the series for each value of n is

log (1) + log (2) + log(3) + log (4) + ......... + log ( 96)

simplify the expanded form we get

0 + 0.3010 + 0.4771+0.6020 ......................... + 1.982

=> 149.9963

b) \(\sum_{n=0}\) to infinity \(\sqrt{0.9^n}\)

formula for the sum of number in geometric progression

is  a/1-r

to find the ratio of the successive terms

plugging into the formula

r = \(\frac{a_{n+1}}{a_n}\)

r = \(\frac{\sqrt{0.9^{n+1}} }{\sqrt{0.9^n} }\)

=> r = \(\frac{\sqrt{0.9^n \times 0.9} }{\sqrt{0.9^n} .1}\)

=> r = \(\frac{\sqrt{0.9} }{1}\)

=> r = \(\sqrt{0.9}\)

=> a = \(\sqrt{0.9^0}\)

=> a = \(\sqrt{1}\)

=>  a= 1

by applying the formula having the value a =1 is

\(\frac{1}{1-\sqrt{0.9} }\)

rationalize the denominator by multiplying with \(1+\sqrt{0.9}\)

=> \(\frac{1+\sqrt{0.9} }{(1-\sqrt{0.9} ) (1+\sqrt{0.9}) }\)

=> 19.4868

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Answer:

(1,1.5)

Step-by-step explanation:

The unit rate is the rate per unit

Since the unit is by x and x = 1 that is the unit rate

I would appreciate it if you mark this answer as brainliest ( especially if it helped you alot!!) Thank you!

Answer:

√9=3

√25=5

5+3=8

Step-by-step explanation:

this is the solution if i understand it correctly

Answer:

About 4

because

3.74 rounded is 4

Answer:

Step-by-step explanation:

if you divide 4928/77=64

choice C

Answer:

194 cents is the correct answer

Step-by-step explanation:

6.99 dollars is 41.94

Answer:

B: -1.94

Step-by-step explanation:

First, you would want to multiply 6 and 6.99

You should get 41.94.

Finally, subtract 41.94 with 40.00. (41.94-40.00).

You should get -1.94. The reason why we add a negative sign is because the total cost of the 6 bikes is more then what she payed with.

The series expansion for e z 1 z up to z 5 is obtained by multiplying the Maclaurin series for e z and 1 1 z. For |z| 1, this series converges.

The Maclaurin series for e^z is:

e^z = 1 + z + z^2/2! + z^3/3! + z^4/4! + ...

The Maclaurin series for 1/1-z is:

1/(1-z) = 1 + z + z^2 + z^3 + z^4 + ...

Multiplying these two series together gives:

e^z/(1-z) = (1 + z + z^2/2! + z^3/3! + z^4/4! + ...)(1 + z + z^2 + z^3 + z^4 + ...)

= 1 + (1+z) + (z + z^2/2! + z^2) + (z^2/2! + z^3 + z^3/3!) + (z^3/3! + z^4 + z^4/4!) + ...

= 1 + z + 2z^2 + 3z^3 + 5z^4 + ...

This series converges for |z| < 1

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Answer:

the one to the left because rigt

The null and alternative hypotheses are:

H0: β1 = 0 (The slope is not significant.)

H1: β1 ≠ 0 (The slope is significant.)

Here,β1=0.0943seβ1=0.107α=0.05

Test the slope significance and find the t-test statistic.

We need to find the t-test statistic so that we can compare it with the t-distribution, whose distributional properties we know, to determine if we can reject or fail to reject the null hypothesis.t-test statistic is calculated by dividing the value of β1 by its standard error (seβ1) and taking the absolute value of this quotient.

t-test statistic = | β1/seβ1 | = |0.0943/0.107| = 0.881

The degrees of freedom (df) associated with this t-test are df = n - 2, where n is the sample size for the explanatory variable x.

In this problem, the decision rule and conclusion are as follows:

Decision Rule: Reject the null hypothesis if |t-test statistic| > tc where tc is the critical value obtained from the t-distribution with df degrees of freedom and a significance level of α/2 in each tail.

Conclusion: The slope is not significant if we fail to reject the null hypothesis, but the slope is significant if we reject the null hypothesis. Since the t-test statistic (0.881) is less than the critical value (1.987), we fail to reject the null hypothesis. Therefore, we conclude that the slope is not significant.

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Only one singlet is expected in the 1H NMR spectrum of 2,2,4,4-tetramethylpentane. So, correct option is A.

In the 1H NMR spectrum, the number of singlets corresponds to the number of unique hydrogen environments in the molecule. Each unique hydrogen environment, where the hydrogens are chemically equivalent, will produce a singlet peak.

In 2,2,4,4-tetramethylpentane, all the carbons are identical, and each carbon is bonded to three hydrogen atoms. The four methyl groups (-CH3) are also chemically equivalent to each other. Therefore, all the hydrogens in this molecule are in equivalent environments, and there are no differences between them.

Since all the hydrogens are chemically equivalent, they will produce a single peak in the 1H NMR spectrum. This single peak is called a singlet.

Hence, the correct answer is option a, as only one singlet is expected in the 1H NMR spectrum of 2,2,4,4-tetramethylpentane.

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Answer: Two singlets.

Step-by-step explanation:

The methyl groups are all equivalent with no neighbors, so they all give rise to only 1 peak.

There is a methylene group that gives rise to another peak.

So the total is 2 singlets.