URGENT!! ILL GIVE BRAINLIEST!!!! AND 100 POINTS!!!

Answer:

500

Step-by-step explanation:

We know that in one hour, there is 60 minutes. If we need to figure out how many pens are produced in two hours, we can use an equation that looks like this:

60 × 2 (number of hours) = 120 (total minutes)

Now that we know that 120 is the total amount of minutes, we now need to figure out how many pens are produced. If 50 pens are produced every 12 minutes, then we need to figure out how many times 12 goes into 120.

12 × 10 = 120

Now that we know that 12 goes into 120 10 times, we now need to multiply 10 by 50 to get the total amount of pens produced.

10 × 50 = 500

500 pens are produced every two hours,

Answer:

Step-by-step explanation:

A machine can manufacture 50 pens in 12 minutes. How many pens can it manufacture in two hours?

50 : 12 = x : 120

x = 50 × 120 : 12

x = 500

-------------------

check

50 : 12 = 500 : 120

25 : 6 = 25 : 6

25/6 = 25/6

the answer is good

Answer:

77.47°

75.96°

26.57°

Step-by-step explanation:

Given vertices of the triangle:

Find the vectors from A to B, B to C and A to C:

[tex]\begin{aligned}AB = B - A &=(x_B-x_A,y_B-y_A) \\&=(-3-(-2), 8-4)\\& = (-1, 4) \end{aligned}[/tex]

[tex]\begin{aligned}BC=C-B &=(x_C-x_B,y_C-y_B)\\ &=(6-(-3),8-8)\\&=(9,0)\end{aligned}[/tex]

[tex]\begin{aligned}AC = C - A &=(x_C-x_A,y_C-x_A)\\&= (6-(-2), 8-4) \\&= (8, 4)\end{aligned}[/tex]

Use Pythagoras Theorem to calculate the magnitudes of the vectors:

[tex]|AB| = \sqrt{(-1)^2+4^2}=\sqrt{17}[/tex]

[tex]|BC|=\sqrt{9^2+0^2}=9[/tex]

[tex]|AC| = \sqrt{8^2+4^2}=4\sqrt{5}[/tex]

[tex]\boxed{\begin{minipage}{6 cm}\underline{Dot Product of two vectors}\\\\$a \cdot b=|a||b| \cos \theta$\\\\where:\\ \phantom{ww}$\bullet$ $|a|$ is the magnitude of vector a. \\ \phantom{ww}$\bullet$ $|b|$ is the magnitude of vector b. \\ \phantom{ww}$\bullet$ $\theta$ is the angle between $a$ and $b$. \\ \end{minipage}}[/tex]

Rearrange the dot product formula to make θ the subject:

[tex]\implies \theta=\cos^{-1}\left(\dfrac{a \cdot b}{|a||b|}\right)[/tex]

Use the rearranged dot product formula to find the angles between two pairs of vectors.

[tex]\boxed{\begin{minipage}{4 cm}\underline{Dot Product}\\\\$\textbf{u} \cdot \textbf{v}=u_1v_1+u_2v_2$\\\\where:\\ \phantom{ww}$\bullet$ $\textbf{u}=\left\langle u_1,u_2 \right\rangle$ \\\phantom{ww}$\bullet$ $\textbf{v}= \left\langle v_1,v_2 \right\rangle$ \\ \end{minipage}}[/tex]

Angle A

[tex]\implies A=\cos^{-1}\left(\dfrac{AB \cdot AC}{|AB||AC|}\right)[/tex]

[tex]\implies A=\cos^{-1}\left(\dfrac{-1 \cdot 8+4 \cdot4}{\sqrt{17} \cdot 4 \sqrt{5}}\right)[/tex]

[tex]\implies A=\cos^{-1}\left(\dfrac{8}{4 \sqrt{85}}\right)[/tex]

[tex]\implies A=77.47^{\circ}\; \sf (2 \; d.p.)[/tex]

Angle C

[tex]\implies C=\cos^{-1}\left(\dfrac{BC \cdot AC}{|BC||AC|}\right)[/tex]

[tex]\implies C=\cos^{-1}\left(\dfrac{9 \cdot 8+0 \cdot4}{9 \cdot 4 \sqrt{5}}\right)[/tex]

[tex]\implies C=\cos^{-1}\left(\dfrac{72}{36 \sqrt{5}}\right)[/tex]

[tex]\implies C=26.57^{\circ}\; \sf (2 \; d.p.)[/tex]

Interior angles of a triangle sum to 180°.

[tex]\implies B=180^{\circ}-A-C[/tex]

[tex]\implies B=180^{\circ}-77.47^{\circ}-26.57^{\circ}[/tex]

[tex]\implies B=75.96^{\circ}[/tex]

Therefore, the interior angles of the triangle with the given vertices are:

the square is hatched that is  Area of the square adjacent to the third side of the triangle is 85 units square that is 85/100= 17/20

What is Pythagoras theorem?

Pythagoras theorem states that a right-angled triangle, the square of one side is equal to the sum of the squares of the other two sides.

Given that areas of the squares adjacent to two sides of a right triangle are :

35 sq units

50 sq units

To determine the area of the square adjacent to the third side of the triangle

According to Pythagoras theorem,

Hypotenuse² = Base² + Perpendicular²

As figure is missing  assuming given sides are perpendicular sides

Then Area of the square adjacent to the third side of the triangle = 35 + 50

= 85 units square

Now, assuming 50 sq unit is an area on hypotenuse

Then Area of the square adjacent to the third side of the triangle  = 35 - 50

= 15 units square

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Analysis of weekly widget production reveals that the number of widgets X produced in a week is a random variable with mean and standard deviation the mean and the standard deviation of C  is Third one.

Whats is a widget?

On both Apple iOS and Android devices, widgets present specific data that resides in an application running in the device. Each widget on an iPhone or other smartphone display presents selected bits of information that reside in the associated applications.

To add a widget on an Android smartphone, go to your home screen, touch and hold an empty space, then:

Tap Widgets. You'll see a list of what's available to install.

Touch and hold a widget. You'll see images of your home screens.

Slide the widget to where you want it. Lift your finger

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Answer:

Below

Step-by-step explanation:

Not very good syntax on your post

  I will assume   23.6 %  ow what numer is 45,400

       23.6 % = .236 in decimal

                 .236 * x  = 45400

                        x =  45400/ .236 = 192,372.8814

Answer:

15wz² - 2wz³

Step-by-step explanation:

when collecting like terms the terms must have the same variables, with variables having the same exponents.

(15wz² + 3wz³) - 5wz³ ← remove parenthesis

= 15wz² + 3wz³ - 5wz³ ← collect like terms

= 15wz² + (3wz³ - 5wz³)

= 15wz² + (- 2wz³)

= 15wz² - 2wz³

Since the amounts are not provided, we have mathematically computed the correct amounts for the deductions and gross and net pay, respectively, below.

The net pay is the amount earned after allowed deductions are made to the gross pay or earnings for the period.

Some of the deductions include social security, medicare, federal income tax withholding, and retirement contributions, among others.

Total hours worked for last week = 48 hours

Hourly rate of pay = $11.00

Gross pay for the week = $528 ($11 x 48)

Social Security Tax = $32.74 (6.2% of $528)

Medicare Tax = $7.66 ($528 x 1.45%)

Federal income tax withheld = $52.80 ($528 x 10%)

401(k) Retirement savings contributions = $26.40 ($528 x 5%)

Total deductions = $119.60

Net pay for the week = $408.40 ($528 - $119.60)

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Answer:

when m=3,

then,2/5×3-1/3

=6/5-1/3

=(6×3-1×5)/15

=13/15 Ans...

99.73 % of the points on a process control chart to fall within the UCL and LCL.

Given that,

We have to find the percentage of the points on a control chart to fall within UCL and the LCL.

We know that,

Calculating the sample data's standard deviation,. Adding three times to that sum. For the UCL, add (3 x to the average) and for the LCL, deduct (3 x from the average).

In control chart , control limits UCL and LCL are three standard deviations either side of the mean , so 99.73% of points are within the UCL and LCL.

Therefore, 99.73 % of the points on a process control chart to fall within the UCL and LCL.

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Answer:

10

Step-by-step explanation:

56 ÷ 7 = 8 each.

80 ÷ 8 = 10

The rectangle PQMN to rectangle RSTU and triangle XYZ to triangle ABC are congruent figures.

What are congruent figures?

Two figures are said to be 'congruent' if they can be placed exactly over each other. When you place one slice of bread on top of the other, you'll notice that they're both the same shape and size. The term "congruent" refers to having exactly the same shape and size.

To identify the congruent figures in the given figures:

Two polygons are congruent if they have the same size and same shape.

(1) Rectangle PQMN and rectangle RSTU are the same shapes.

MN ≅ RS

NP ≅ ST

QP ≅ UT

MQ ≅ UR

Therefore rectangle PQMN and rectangle RSTU are congruent figures.

(2) Triangle XYZ and triangle ABC:

XY ≅ AB

YZ ≅ BC

XZ ≅ AC

Therefore triangle XYZ and triangle ABC are congruent figures.

Hence, the rectangle PQMN to rectangle RSTU and triangle XYZ to triangle ABC are congruent figures.

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As calculated from the given data the confidence interval for μ is (3.65, 3.91).

Let X_1,..,X_nX 1 ,..,X n  are n observations

from population with mean μ.

Than sample mean

= n1i=1/n∑X i​

Sample variance is defined by,

s = 1/( n-1 )∑(X i​ - mean) ²

n = sample size = 10

c = 95%

therefore ,

mean = 37.82/10

          =3.782

variance = 0.29556/9

               =0.03

Data points' variance from the mean is a measure of how they vary. A variance, according to Layman, is a measurement of how widely apart a set of data (numbers) are from their mean (average) value.

Finding the expected difference of deviation from the actual number is what is meant by variance. As a result, variance is influenced by the data set's standard deviation.

Data is more dispersed from its mean the higher the variance value, and less dispersed from mean if the variance value is low or minimal. As a result, it is referred to as a measure of data spread from mean.

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​

x^2-4x-5=0

Using sum and product method

sum= -4

product= -5

factor= -5, 1

x^2-5x+x-5

x(x-5)+1(x-5)

(x-5)(x+1)

Null hypothesis is rejected and it was concluded that proportion of the use of drugs in local seniors is more compare to national seniors.

As given in the question,

Total number of local seniors be n₁ = 100

Total number of national seniors be n₂ = 100

Let us consider proportion of local seniors be p₁

Number of local seniors using drugs = 65

Null hypothesis : p₁ = p₂

Alternative hypothesis : p₁> p₂

p₁ = 0.65

1 - p₁ = 0.35

And proportion of national seniors be p₂

Number of national seniors using drugs = 61

p₂ = 0.61

1 - p₂ = 0.39

Standard error = √ [p₁(1-p₁)/n₁ + p₂(1-p₂)/n₂]

                       = √0.65( 0.35)/100 + 0.61(0.39)/100

                       = √0.002275 + 0.002379

                       = 0.0682

Z =( p₁ - p₂ ) /  √ [p₁(1-p₁)/n₁ + p₂(1-p₂)/n₂]

  = 0.65 - 0.61 / 0.0682

  = 0.04/ 0.0682

  =0.5865

p-value = 0.2788 > 0.05

Null hypothesis rejected at the 5% level.

Therefore, from the given proportion of the distribution it is concluded that local seniors uses drugs in higher rate than the national seniors as null hypothesis rejected .

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Answer:

(7,6)

Step-by-step explanation:

An ordered pair is a member of both equations if it satisfies both equations. In other words, we need to find values of x and y that make both equations true.

We can start by setting the two equations equal to each other, since they both represent the same variable, x. This gives us the equation -5y + 37 = -6y + 43. We can then solve this equation by subtracting -6y from both sides, which yields -5y + 37 - (-6y) = -6y + 43 - (-6y), or -5y - (-6y) + 37 = 43. This simplifies to -y + 37 = 43, or y = 43 - 37 = <<43-37=6>>6.

Now that we have found the value of y that satisfies both equations, we can plug this value into either equation to find the corresponding value of x. For example, we can plug y = 6 into the equation x = -5y + 37 to find that x = -5 * 6 + 37 = -30 + 37 = <<-30+37=7>>7. Therefore, the ordered pair that is a member of both equations is (7, 6).

Answer:

just substitute each value of x into the function

Step-by-step explanation:

1. (x=-2) y= 4(-2)+2

2. (x=0) y= 4(0)+2

3. (x=2) y= 4(2)+2

4. (x=4) y= 4(4)+2

use the same steps but change the value of x. go ahead a use your calculator

Answer:i believe its 60 with x=30

Step-by-step explanation:

Step-by-step explanation:

M(<BAC)=95° , M(<ABC)=2x , M(<ACD)=145°

let M(<ACB)=y

Then M(<ACB)+M(<ACD)=180° , Because they are in a straight line and straight line can measure 180°.

so , y+145°=180°

y=180°_145°

y=35° , M(<ACB)=35°

The sum.of the interior angle of any triangle is 180° . so now we have 95° , 38° and 2x so the value of x be

95°+35°+2x =180°

130°+2x=180°

2x=180°_130°

2x=50° , divide both sides by 2 to find the value of x

x=25° , 2*25°=50° , M(<ABC)=50°

M(<BAC)=95°, M(<ABC)=50° , M(<ACB) =35°

95°+50°+35°=180°

The coordinates are the best estimate of the solution to the system of equations (-1,0). The correct option is A.

A coordinate plane is a 2D plane which is formed by the intersection of two perpendicular lines known as the x-axis and y-axis. A coordinate system in geometry is a method for determining the positions of the points by using one or more numbers or coordinates.

The system of equations is,

-3x + y = 2

-4x + 7y = 1

When the graph is plotted on the coordinates axes, The value of x and y are -0.765 and -0.964, The best estimation for the coordinates will be (-1,0).

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This is short. And it is does not have a binomial distribution.

Given,

When a variable has only two possible outcomes and each trial is independent of the others, the binomial distribution is utilised.

Here,

Yes, there are only two possible outcomes for each kid. Their last names either have more than six letters, or they do not.

However, as you choose, the names are not put back into the hat, changing the probabilities. As a result, the trials are not independent, and the distribution is not binomial.

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Answer:

Open circle shaded to the right

Step-by-step explanation:

Since its a more than inequality, its is shaded to the right.

Since the inequality applies to numbers GREATER than 3 you have a open circle because you are not including 3.

The difference between the two candidate voted is less than the margin of error, so the result cannot be predicted.

4% of 2052 is 4/100 x 2052 = 82.08

44% of 2052 is 902.88

46% of 2052 is 943.92

The difference between the two candidate voted is less than the margin of error

It increases as the level of confidence increases because the larger the expected proportion of intervals that will contain the parameter the larger the margin of error.

The race was too close to call means it is within the margin of error for one candidate to receive 44% of the popular vote and for the other candidate to receive 46​%, the poll cannot predict the winner.

Therefore, The result cannot be predicted as the race was too close to call.

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Answer:

(XYZ) and (ABC)

(MNQP) and (RUTS)

Step-by-step explanation:

XYZ and ABC are the same triangle. They are just rotated.

Similarly, MNQP and RUTS are the same figures. They are rotated.

The number of  mac and cheese Abdullah can buy for $20 is 8.

The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.

Given that, at the grocery store, Abdullah purchased 3 pounds of mac and cheese for $7.50.

Now, cost of 1 pound of mac and cheese =Total cost/Number of pounds of mac and cheese

= 7.50/3

= $2.50

Then, with $20 Abdullah can by =20/2.50

= 8

Therefore, the number of  mac and cheese Abdullah can buy for $20 is 8.

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Answer: The resulting P-value is 0.923, which is greater than 0.05. Therefore, we do not reject the null hypotheses.

Step-by-step explanation:

(a) The appropriate hypotheses for this study would be:

Null hypothesis: There is no difference in intelligence scores between first-born and second-born monozygotic twins.

Alternative hypothesis: There is a significant difference in intelligence scores between first-born and second-born monozygotic twins.

(b) In Minitab, we can conduct a Paired-T test using the following steps:

1. Enter the data into two columns, one for first-born twins and one for second-born twins.

2. Select "Stat > T Tests > Paired T" from the menu.

3. In the "Paired-T Test" dialog box, select the two columns of data as the "Pairs" and specify the significance level as 0.05.

4. Click "OK" to run the test.

The P-value obtained from this test is 0.752, which is greater than the specified significance level of 0.05. Therefore, we do not reject the null hypotheses.

Why is it appropriate to use a Paired-T test in this study?

It is appropriate to use a Paired-T test in this study because the data consists of paired samples (first-born and second-born monozygotic twins) and we are comparing the mean difference between the two groups. The Paired-T test is specifically designed to compare the means of paired samples and allows for the correction of any inherent dependency between the two groups.

The P-value of 0.752 indicates that there is a 75.2% chance of obtaining the observed difference in intelligence scores between first-born and second-born twins if the null hypothesis is true.

Since this probability is relatively high, we cannot conclude that there is a significant difference in intelligence scores between the two groups. This means that the intelligence scores of first-born and second-born twins are not significantly different.

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P-value = 0.29, which is higher than 0.05. Therefore, we don't reject the null hypotheses.

a)The proper hypotheses for this investigation would be:

Null hypotheses: First-born and second-born monozygotic twins do not differ in their cognitive ratings.

Appropriate hypotheses: First-born and second-born monozygotic twins' IQ scores differ significantly.

(b)The steps listed below can be used to do a Paired-T test in Minitab:

1. Separate the data into first-born twins and second-born twins columns.

2. "Stat > T Tests > Paired T" can be selected from the menu.

3. Choose the two data columns as the "Pairs" in the "Paired-T Test" dialogue box, and enter 0.05 for the significance level.

4. To launch the test, click "OK".

This test yielded a P-value of 0.752, which is higher than the 0.05 designated threshold of significance. Therefore, we don't reject the null hypotheses.

Why is a Paired-T test useful for this study?

The first-born and second-born monozygotic twins in this study are paired samples, and we are comparing the mean difference between the two groups, therefore a Paired-T test is acceptable. The Paired-T test allows for the correction of any inherent dependencies between the two groups and is specifically created to compare the means of paired samples.

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ARPANET  does not extend beyond the boundaries of a particular organization.

ARPANET is considered the forerunner of the internet.

ARPANET stands for Advanced Research Projects Agency Network. It was established by the Department of Defense of the United States in 1969, and it used two protocols that were determinant for the invention of the Internet: the packet-switching network and the TCP/IP protocol suite. The scientist that participated in the development of the research were Paul Baran, Lawrence Robles, and Donald Davis. So ARPANET is considered the forerunner of the internet.

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total income from the continuous caster in the first year is $43200

A serial caster's first year gross income can be found by integrating the function f(t) representing the number of months in a year from t = 0 to t = 12.

To find this integral, we can use the formula for integrals of exponential functions.

∫ f(t) dt = F(t) = 36000/0.05 * (e0.05t - 1)

Inserting the limits of the integration, we get:

∫36000e0.05t dt from t = 0 to t = 12 = 36000/0.05 * (e0.05*12 - 1) = 36000/0.05 * (1.63 - 1) = 36000/0.05 * 0.63 = 43200

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The p-value for the given information is 0.247.

The p value refers to a number which is calculated from a statistical test and describes how likely a researcher is to have found a particular set of observations if the null hypothesis were true.

According to the provided information,

Sample size, n = 100

Sample proportion p’ = 47/100 = 0.47

The null hypothesis is: H0 - p = 0.5

The alternative hypothesis is: Ha - p > 0.5

Probability to be tested p = 0.5

Standard deviation = √p(1 – p)/n = √0.5(1 - 0.5)/100 = 0.05

z-test statistics is given by

z = (p’ – p)/σ = (0.47 – 0.5)/0.05 = - 0.6

From the table,

P value = 0.247

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