I NEED HELP PLEASE!! Does anyone understand this??

Answer:

b

Step-by-step explanation:

NOT 100% SURE PLEASE GIVE BRAINLIEST

Answer:

60miles

Step-by-step explanation:

Answer:

60 miles

Step-by-step explanation:

If he's going 30 miles/hour, then you just multiply 30 by 2.

Therefore ,In other words  the solution of the given problem of fraction is even though 21 can be divided by 3, it cannot be divided by 6. (for an integer anyway)

A fractional or ratio element is a portion of the whole. The numerator a denotes the number of parts that are included, and the denominator b denotes the number of pieces of equal size into which the whole has been divided. The least common multiple (LCD) of two fraction denominators is called the LCM of those denominators.

Here,

21/3 = 7    21/6 = 3.5

18/3 = 6   18/6 = 3

24/3 = 8   24/6 = 4

12/3 = 4     12/6 = 2

Each can be split to get an integer, with the exception of:

21/6 = 3.5

Therefore ,In other words, even though 21 can be divided by 3, it cannot be divided by 6. (for an integer anyway).

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we have:

the graph that best represents is: A

answer: A

Conducting a hypothesis test at the 5% significance level we can conclude that the girls' mean is higher than the boys' mean.

To conduct a hypothesis test to determine if the girls' mean is higher than the boys' mean, you will need to use a two-tailed hypothesis test with a significance level of 5%. The null hypothesis is that the girls' mean is not higher than the boys' mean, and the alternative hypothesis is that the girls' mean is higher than the boys' mean. The test statistic is calculated using the formula:

Test statistic = (Girls' mean - Boys' mean) / (Standard deviation of the difference / √(sample size))

The test statistic for this study is calculated as: (3.3 - 1.6) / (1.6/√40) = 4.375.

Using a 5% significance level and two-tailed hypothesis test, the critical value for this test is 1.96. Since the test statistic (4.375) is greater than the critical value (1.96), the null hypothesis can be rejected.

Therefore, we can conclude that the girls' mean is higher than the boys' mean.

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300 + (200)r is the proper expression for sales if the number of units expected to be sold is uniformly distributed between 300 and 500. If r is a random number between 0 and 1.

What is a random number?

a random number is a number chosen by chance -- i.e., randomly, from a set of numbers. All the numbers in a specified distribution have equal probability of being chosen randomly.

Given that r is a random number between 0 and 1.  it is uniformly distributed between 300 and 500 will be done by using the formula of 300+200r.

If r = 0, 300+200r will result in the output as 300

If r = 0.5, 300+200r will result in the output as 400

If r= 1, 300+200r will result in the output as 500

Hence ,the proper expression for sales is 300+200r

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Answer:

1.148698

Step-by-step explanation:

The number that will be equal to 2 when raised to the power of 5 is 1.1487.

When raising a particular number to the power of another, It implies that we are multiplying that particular number in the number of places with which the power is being raised.

From the given information:

SO;

We will need to determine the fifth root of 2 in order to eliminate the power of 5 in x.

i.e

\(\mathbf{ \sqrt[5]{x^5}=\sqrt[5]{2} }\)

\(\mathbf{ x=\sqrt[5]{2} }\)

x = 1.1487

Therefore, we can conclude that the number that will be equal to 2 when raised to the power of 5 is 1.1487.

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Answer:

19

Step-by-step explanation:

Answer:

a = 120

b = 80

c = 40

d = 0.5

e = 50%

Step-by-step explanation:

Did it on Edge 2020! have fun

Answer:

a = 120

b = 80

c = 40

d = 0.5

e = 50%

Step-by-step explanation:

got it fully correct on Edge 2021 :]

The needed Ahmed takes 45 seconds longer than Tonya to run a afar.

Simplification involves applying rules of computation and algebra to remove gratuitous terms, factors, or operations from an expression.

Then,

To calculate how much longer it takes Ahmed to run a afar than Tonya, we need to find the difference between their handling times.

First, we need to convert the times to a common unit. Let's convert the times to seconds,

Ahmed's time 8 twinkles 30 seconds = ( 8 x 60) 30 = 510 seconds

Tonya's time 7 twinkles 45 seconds = ( 7 x 60) 45 = 465 seconds

Now we can find the difference in their times

Ahmed's time- Tonya's time = 510 seconds- 465 seconds = 45 seconds

thus, Ahmed takes 45 seconds longer than Tonya to run a afar.

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Answer:

w = 5.2

Step-by-step explanation:

4(2.25w + 3.1) - 2.75w = 44.9

9w + 12.4 - 2.75w = 44.9

6.25w + 12.4 = 44.9

6.25w = 32.5

w = 5.2

4(2.25w+3.1)-2.75w=44.9

9w+12.4-2.75w=44.9

9w-2.75w+12.4=44.9

44.9-12.4=32.5

9w-2.75w=32.5

6.3w/6.3=32.5/6.3

=5 10/63

s = 55.3 in this situation means the annual sales that can be written in millions like 55.3 million sales in 2008.

Mean:

Mean is the fraction of the sum of the observed data by the total number of sample data.

That is,

Mean = Sum of all observations / number of observations

Given,

Let s be the annual sales (in millions) for a particular electronic item.

The value of s is 55.3 for 2008.

Here we need to find what does s = 55.3 mean in this situation.

According to the question,

s represents the annual sales (in millions) for a particular electronic item.

So,

s = 55.3

means the the annual sales (in millions) for a particular electronic item.

Like 55.3 millions of particular electronic item sold in 2008.

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We can use the radical rules to simplify the product 3(4x2). To start, we simplify 4 to its square root, which equals 2. Next, we employ the power property of radicals, which asserts that (a,m) = (a(m/2)), to simplify the cube root (x2) by using it. In this instance, (x2) = x.

We now get 3 * 2 * x, which simplifies to 6x when the simpler terms are combined.The result is that the product 3(4x2) has the simplest form (6x).We can dissect the constituent parts and use the radical-simulation principles to simplify the product 3(4x2).In the beginning, we may reduce the square root of 4 to 2: 3(2x2).Then, since it contains a square (2) and a cube root (), we can reduce them as follows:

3 * 2 * x^(²/³)Taking the square root before the cube root is shown by the exponent 2/3. We may calculate the exponent by reducing it to: 3 * 2 * x(2/3)The terms are then combined when we multiply the coefficients: 6 * x(2/3)As a result, 6x(2/3) is the product of 3(4x2) in its simplest form.

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Answer:

B

Step-by-step explanation:

Chad used the scale of 1 scale inch which is equal to 9 feet.

In the conventional system of measuring, an inch is a unit of length. Either in or " can be used to denote length in inches. For instance, 16 in or 16" can be used to write 5 inches.

Given that,

The length of the gym in real life = 81 feet

The length of the gym in scale drawing = 9 inches

1 scale inch = length of the gym in real life/length of the gym in the scale drawing

1 scale inch = 81/9 = 9

Thus, Chad used the scale of 1 scale inch which is equal to 9 feet.

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Answer:

2

Step-by-step explanation:

We want to find the value of p/2 - 5 when p = 14.

Simply put 14 in the place of p and solve:

14/2 - 5

7 - 5 = 2

The value of 2.

The solution for the system of equations -

x+3y+z=-8      

2x+y-6z=20    

x-2y+z=-13    

is x = 5.875, y = 1, z = 16.875

The general equation of a straight line is -

[y] = [m]x + [c]

where -

[m] is slope of line which tells the unit rate of change of [y] with respect to [x].

[c] is the y - intercept i.e. the point where the graph cuts the [y] axis.

The equation of a straight line in point slope form can be also written as-

\(y-y_{1}=m\left(x-x_{1}\right)\)

We have the following set of equations -

x+3y+z=-8       ..[1]

2x+y-6z=20     ..[2]

x-2y+z=-13        ..[3]

We can write eq [3] as -

z = - 13 - x + 2y

So, eq [1] and [2], will become -

x + 3y + (-13 - x + 2y) = -8

x + 3y - 13 - x + 2y = -8

5y = - 8 + 13

5y = 5

y = 1       ..Eq[4]

AND

2x + y - 6z = 20

2x + y - 6(- 13 - x + 2y) = 20

2x + y + 78 + 6x - 12y = 20

2x + 1 + 78 + 6x - 12 = 20

8x = 47

x = 5.875      ..Eq[5]

Now -

x - 2y + z = -13

5.875 - 2 + z = - 13

z = 16.875

Therefore, the solution for the system of equations -

x+3y+z=-8      

2x+y-6z=20    

x-2y+z=-13    

is x = 5.875, y = 1, z = 16.875.

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Answer:

D.

Step-by-step explanation:

The justifications for 2 and 3 are;

Addition property of equality and

Multiplication property of equality

1. x/2 - 9 = -4 given

Add 9 to both sides

2. x/2 = -13 (Addition property of equality)

cross product

3.x = -26 (Multiplication property of equality)

Therefore, x/2 - 9 = -4 where x Is -26 is justified by addition and multiplication property of equality.

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Answer:

its c  look at god

Step-by-step explanation:

The answer to the question is an option D.

The numerical value that represents the part of the whole is termed a Fraction. A fraction consists of a numerator and a denominator. The numerator is the parts taken out from the whole and the denominator refers to the total part of the whole.

Example  =  \(\frac{4}{7}\) where 4 is the numerator and 7 is the denominator.

As per the question,

\(\dfrac{\frac{5}{7}}{\frac{1}{3}} = \dfrac{5 \times 3}{7 \times 1}\)

\(= \dfrac{15}{7}\)

Thus the value of the option  D is correct  i. e.

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Midsegment is half the parallel side:

ORT is isosceles, the angles O and R are equal and measure:

IRN is isosceles, the angles N and I are equal and measure:

ABC is isosceles, the angles A and B are equal and measure:

The two non zero roots of the equation sin x - x² + 1/2 = 0 are - 0.375 and 1.1875.

Given the function is,

f(x) = sin x - x² + 1/2

f(0) = 0.5 > 0

and f(-1) = sin (-1) - 1 + 1/2 = - 1.3415

So the root is between 0 and - 1.

So the first iteration is,

x₁ = (-1 + 0)/2 = - 0.5

f(x₁) = f(-0.5) = sin (-0.5) - (-0.5)² + 1/2 = - 0.2294 < 0

Second iteration is,

f(0) > 0 and f(-0.5) < 0

So the root is between 0 and - 0.5.

x₂ = (- 0.5 + 0)/2 = -0.25

Now, f(-0.25) = 0.1901 > 0

So the third root is in between -0.25 and - 0.50.

So, third iteration is, x₃ = (-0.25 - 0.5)/2 = - 0.375

Hence the first root is - 0.375.

For second root:

f(x) = sin x - x² + 1/2

Now,

f(1) = 0.3415 > 0

f(1.5) = - 0.7525 < 0

First iteration is,

x₁ = (1 + 1.5)/2 = 1.25

f(1.25) = - 0.1135 < 0

Second iteration is,  x₂ = (1 + 1.25)/2 = 1.125

f(1.125) = 0.1366 > 0

So third iteration is,  x₃ = (1.125 + 1.25)/2 = 1.1875

Hence the second root 1.1875.

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Answer:

A. EF

Step-by-step explanation:

Answer:

EF

Step-by-step explanation:

The reason is because EF and BC are in the same plane

The regular expression is ^(a(aa)*b)$.

To create a regular expression for the language L = {w = {a,b}* | w has an odd number of 'a's and ends with 'b'}, we can use the following expression:

^(b|(a(aa)*b))$

Breaking it down:

^ indicates the start of the string.

(b|(a(aa)*b)) matches either 'b' or a sequence of 'a's followed by an odd number of 'a's and 'b'.

(aa)* matches zero or more pairs of 'a's.

$ indicates the end of the string.

This regular expression ensures that the string starts with 'b' or a sequence of 'a's, followed by an odd number of 'a's, and ends with 'b'. Any additional characters or sequences in between are not allowed.

Please note that regular expressions can have different notations and conventions depending on the context or programming language you're using. The expression provided here follows a general pattern that should work in most cases.

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The number of people coming in during the lunch hour is 160

The complete question is in the attached image

The random numbers are given as:

18, 38, 87, 16, 56, and 5

Regroup the numbers

Number           Group       Probability

5, 16, 18           1 - 20             3/6

38, 56             21 - 60           2/6

56                    61 - 90          1/6

Based on the individual numbers and the probability table, we have:

X      20      30     40

P     3/6     2/6    1/6

The expected value is:

\(E(x) = \sum xp\)

This gives

E(x) = 20 * 3/6 + 30 * 2/6 * 40 * 1/6

Evaluate

E(x) = 160/6

There are six ten-minute intervals.

So, we have:

People = 6 * 160/6

Evaluate

People = 160

Hence, the number of people coming in during the lunch hour is 160

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Answer:

she should have to work 35 hours a week

Answer:

slope m = - 8

Step-by-step explanation:

the equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b ) a point on the line

y + 3 = - 8(x - 4) ← is in point- slope form

with slope m = - 8

The slope is :

Solution:

Given: \(\bf{y+3=-8(x-4)}\)

To determine the slope, it's important to know the form of the equation first.

There are 3 forms that you should be familiar with.

The three forms of equations of a straight line are:

This equation matches point slope perfectly.

The question becomes, how do you work with point slope to find slope?

In point slope, m is the slope and (x₁, y₁) is a point on the line.

Similarly, the slope of \(\bf{y+3=-8(x-4)}\) is -8.

Answer:

-8 and 3

Step-by-step explanation:

The asked numbers are -8 and 3.

An equation is a mathematical statement that shows that two mathematical expressions are equal.

For instance, 3x + 5 = 14 is an equation, in which 3x + 5 and 14 are two expressions separated by an 'equal' sign.

Given that, two numbers multiply to -24 and add up to -5

Let the two numbers be x and y

x+y = -5...(i)

xy = -24

x = -24/y...(ii)

Put eq (ii) in eq (i)

-24/y + y = -5

-24 + y² = -5y

y²+5y-24 = 0

Factorizing,

y = 8 and 3

Taking y = 3, put it in eq(ii)

x = -24/3

x = -8

Hence, the asked numbers are -8 and 3.

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