M∠1=19 , m∠2 what is the answer?

-2(-2m+5n=6)

1(-4m+10n=14)

4m-10n=-12

-4m+10n=14

add these equations to eliminate m:

0=2

this system has NO solutions

The fraction of the students in Siena's class are girls with brown eyes is 5/12.

Let the fraction of students in Siena's class with brown eyes be a=5/8.

And the fraction of students in Siena's class with brown eyes are girls be b=2/3.

Then, the fraction of students in Siena's class are girls with brown eyes be z=a×b

Therefore, by substituting the fraction values, we get

z=(5/8)×(2/3)

z=5/12.

Hence, 5/8 of the students in Siena's class have brown eyes. 2/3 of the students with brown eyes are girl. Then, the fraction of students in Siena's class are girls with brown eyes is 5/12.

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Answer:

\(18\)

Step-by-step explanation:

\(x + y = 10 (1)\\ x - y = 6(2) \: \\ 2y = 4 \: \: ie \: y = 2 \\ x + y = 10 \\ x = 10 - 2 \\ x = 8 \\ x3 - y3 = (8 \times 3) - (2 \times 3) \\ = 24 - 6 \\ = 18\)

Answer:

The right approach is "Systematic sampling".

Step-by-step explanation:

Answer: Its 6:15

Step-by-step explanation:

Its simple math. 7:00 subtract 45minutes, knowing that 60minutes is an hour and that its the 7 hour from the 6 hour. Gets you 6:15.

Yep.

The 45 minutes before 7 o'clock will be 6.15 AM/PM.

the indefinite continued progress of existence and events in the past, present, and future regarded as a whole.

In other words, time is something which measure by motion and it is given by einstein that time depends upon motion.

For example time = distance/velocity so it means time also depends on velocity.

In the given question, we know that in

1 hour  = 60 minutes

45 minutes before of 7 o'clock = 60 - 45 = 15 minutes after 6 o'clock hence 6.15 minutes will be correct answer.

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Answer:

2 days

Step-by-step explanation:

275 miles times 0.05 = $13.75 for mileage

200-13.75=186.25 left

186.25/63.41(daily fee)= 2.93

She can rent it for 2 days

Answer:

Step-by-step explanation:

find the semiperiter (1/2 perimeter or L+W)

80 : 2 = 40

now we know that 4z + 2 + 3z + 3 = 40

we solve for z with an equation

4z + 2 + 3z + 3 = 40

7z = 40 - 2 - 3

7z = 35

z = 35 : 7

z = 5

now we find CD

3z + 3 =      (z=5)

3 * 5 + 3 =

15 + 3 =

18

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

check (remember pemdas)

4z + 2 + 3z + 3 = 40

4*5+2+3*5+3 = 40

20+2+15+3=40

40 = 40

the answer is good

a. The sample mean is 3 and the sample standard deviation is approximately 1.53.

b. The estimated standard error for the sample mean is 0.765.

a. The sample mean is:

mean = (2 + 2 + 6 + 2)/4 = 3

The sample standard deviation can be calculated using the formula:

s = √(sum((xi - mean)²)/(n - 1))

where xi represents each score in the sample. Plugging in the values, we get:

s = √((2-3)² + (2-3)² + (6-3)² + (2-3)²)/3

s = √(14/3)

s ≈ 1.53

So, the sample mean is 3 and the sample standard deviation is approximately 1.53.

b. The estimated standard error for the sample mean can be calculated using the formula:

SE = s/√(n)

where s is the sample standard deviation and n is the sample size. Plugging in the values, we get:

SE = 1.53/√4)

SE = 0.765

So, the estimated standard error for the sample mean is 0.765.

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Answer:

B.) 600

Step-by-step explanation:

if you are rounding to the nearest hundred value you would get 600 because the 3 in 638 will round down to 600

it can not be A because it is to far down from the number line

it can not be C or D because they are to far up on the number line

So the correct answer has to be B-600

if the 2nd number is 5 or more you will always round up.

if the 2nd number is 4 or less you will have to round down.

After rounding off Jaime has (B) 600 blocks with him.

So, rounding off 636:

We can easily tell that after rounding off, the number of blocks will be:

Therefore, after rounding off Jaime has (B) 600 blocks with him.

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The correct question is given below:

Jaime has 636 blocks. after rounding off how many blocks does he have?

A. 500

B.600

C.700

D.800

Answer:

l = 40 m

Step-by-step explanation:

The formula for area of a rectangle is

A = lw, where

Step 1:  Since we're given the area and width, we plug in these two values for A and w and to solve for l (length):

360 = 9l

Step 2:  Divide both sides by 9 to solve for l

(360 = 9l) / 9

40 m = l

Optional Step 3:  We can check our answers by checking that the product of 40 and 9 is 360

40 * 9 = 360

360 = 360

Answer & Step-by-step explanation:

Simplify the expression.

Exact Form:

7/12

Decimal Form:

0.583

Hope this Helps!!! :)

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Answer:

Increase.

Step-by-step explanation:

Let's say p=25.

50/25=2

If p decreased and we turned the 25 into a 2, then 50/2=25.

The answer increased.

I hope this is what you were looking for!! <3

Answer:

1. >

2.<

3.<

btw

Absolute value equations are equations where the variable is within an absolute value operator, like |x-5|=9. The challenge is that the absolute value of a number depends on the number's sign: if it's positive, it's equal to the number: |9|=9. If the number is negative, then the absolute value is its opposite: |-9|=9.

Answer:

12.5%

Step-by-step explanation:

0.2 of 1.6 is 12.5%. (0.2/1.5=12.5% or 0.125)

Answer:

You can't round 7 to the nearest to 10, because there is nothing to round.

Step-by-step explanation:

Answer:

Literally take your f(x) and - your g(x)

(x^2+9x+18) - (x + 6)

Remember to distribute the negative sign.

Given:

in 27, the smaller triangle is the image of the larger triangle after a dilation with Center C

We will find the scale factor and the value of y

First, the result of the dilation gives similar figures

So, the side lengths of the figures will be proportions

We will find the scale factor (r) as follows:

now, we will find the value of y using the ratio and proportions

So, the answer will be:

The scale factor = 2/3

y = 3

(A) The lack of any particular intervention or treatment is a distinguishing feature of a quasi-experiment.

Experimental and quasi-experimental studies are characterized by testing an intervention's effects.

If a human subject is included in an intervention, the researcher will randomly assign them to either receive the independent variable, such as a modified diet or nutritional supplement or to the control group.

Putting into practice an intervention without using randomization.

"In that, an independent variable is manipulated, quasi-experimental research is comparable to experimental research.

Because there is either no control group, no random selection, no random assignment, or no active manipulation, it varies from experimental research."

Therefore, (A) the lack of any particular intervention or treatment is a distinguishing feature of a quasi-experiment.

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Complete question:

What is the hallmark of a quasi-experiment?

A. the absence of any specific intervention or treatment.

B. high levels of control over treatment conditions.

C. random assignment of participants to conditions.

D. lack of random assignment of participants to conditions.

When analyzing categorical data, it is often useful to examine the relationship between two variables. Crosstabs, or contingency tables, are commonly used to display the counts of observations in each combination of the two variables. However, these raw counts can be difficult to interpret, especially if the totals for each variable are different.
By transforming the counts into percentages of row or column totals, we can better understand the patterns and relationships in the data. Percentages allow us to compare the proportions of one variable within each category of the other variable, regardless of the total number of observations. This can help us identify any trends or patterns in the data that may not be immediately apparent from the raw counts.

For example, suppose we have a crosstab of gender and favorite color. The raw counts may show that more females than males prefer blue, but it's difficult to know if this difference is meaningful without knowing the total number of males and females in the sample. By transforming the counts to percentages of row totals, we can see that 40% of females prefer blue, while only 30% of males do. This suggests that there may be a relationship between gender and favorite color.

Overall, transforming raw counts into percentages of row or column totals can help us better understand the relationship between two categorical variables, especially when the totals are different.

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Answer:

she messed up at -17=34x

Step-by-step explanation:

she added 8x to each side but she was actually supposed to subtract

The error is 8(x - 3) + 7 = 2x(13) and -17 = 34x.

4 - 17 = -13, not 13

8x - 17 = 26x

-17 = 26x -8

-17 = 18x ( it should be like this, but this is still wrong because it should -26)

The solution is:

8(x - 3) + 7 = 2x(4 - 17)

8(x - 3) + 7 = 2x(-13)

8x - 24 + 7 = -26x

8x - 17 = -26x

8x + 26x = 17

34x = 17

x = 17/34

x = 1/2

Hope it helps!

a) Laplace transform :

1) 2s/(s² + 4)²

2)  1/s-2 + 2/(s-2)² + 4

b) Inverse laplace transform :

1)  \(e^{-3t}\)(1 + 2t)

2)  1/2(\(e^{3t} + e^{-3t}\))

Given,

Functions.

a)

1)

f(t) = tsintcost

L(tsintcost) = L(tsin2t/2)

= 1/2 L(tsin2t)

= 2s/(s² + 4)²

2)

f(t) =  \(e^{2t}\)  (sint + cost)²

L( \(e^{2t}\) (sint + cost)² ) = L( \(e^{2t}\) +  \(e^{2t}\)  sin2t)

= L( \(e^{2t}\) ) + L ( \(e^{2t}\) sin2t)

= 1/s-2 + 2/(s-2)² + 4

b)

1)

f(s) = s+5/s² + 6s + 9

f(s) = s+ 5 /(s+3)²

Take partial fraction,

= 1/s+3 + 2/(s+3)²

Take inverse of the f(s),

\(L^{-1}\) (f(s)) = \(L^{-1}\)( 1/s+3 + 2/(s+3)²)

f(t) = \(e^{-3t}\)(1 + 2t)

2)

f(s) = s/s² - 9

f(s) = s/(s+3)(s-3)

Taking partial fraction ,

f(s) = 1/2/s+3 + 1/2 /s-3

Taking inverse laplace of f(s),

\(L^{-1}\) (f(s))  =  \(L^{-1}\) ( 1/2/s+3 + 1/2 /s-3)

f(t) =  1/2(\(e^{3t} + e^{-3t}\))

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The function rule to represent the total amount earned with Option A and earned with Option B are f(x) = 100 + 10x and f(x) = (1/100) * 2^x.

What is the function rule?

The function rule is the relationship between the input or domain and the output or range. A relation is a function if and only if there exists one value in the range for every domain value.

For Option A, the total amount earned can be represented by the function:

f(x) = 100 + 10x

where x is the number of days in February (x = 28 for a standard non-leap year)

For Option B, the total amount earned can be represented by the function:

f(x) = (1/100) * 2^x

where x is the number of days in February (x = 28 for a standard non-leap year)

the above function will be in cents, to get dollar values divide it by 100.

hence, the function rule to represent the total amount earned with Option A and earned with Option B are f(x) = 100 + 10x and f(x) = (1/100) * 2^x.

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Answer: 9

Hope this helps

Answer:

9

Step-by-step explanation:

Answer:

a^8

Step-by-step explanation:

When dividing exponents simply subtract the exponents and keep the base the same

So a^10 / a^2

Subtract the exponents

10-2=8

And keep the base

We would get a^8

Answer:

x=3

Step-by-step explanation:

f(x)=2x+6

f(x)=12

Hence:

2x+6=12

2x+6-6=12-6

2x=6

x=6/2

x=3

To determine whether a mapping is a homomorphism, monomorphism, epimorphism, or isomorphism, we need to consider its properties and relationships between its domain and range.

A homomorphism is a mapping between two algebraic structures that preserves the operations of the structures. In other words, if we have two algebraic structures A and B with operations *A and *B, respectively, then a homomorphism f: A → B satisfies the property that f(x *A y) = f(x) *B f(y) for all x, y in A. A monomorphism is a type of homomorphism that is injective, meaning that distinct elements of the domain map to distinct elements in the range.

To determine which of the given mappings are homomorphisms, monomorphisms, epimorphisms, or isomorphisms, we need to apply the definitions and properties of these mappings.
Let f: G → H be a mapping between two groups G and H.
a) To determine if f is a homomorphism, we need to check if it preserves the group operations. That is, we need to check if f(xy) = f(x)f(y) for all x, y in G. If this property holds, then f is a homomorphism. If it also satisfies f being injective, f is a monomorphism. If it is surjective, f is an epimorphism. Finally, if f is both injective and surjective, then f is an isomorphism.
b) To determine if f is a monomorphism, we need to check if it is injective. That is, we need to check if f(x) = f(y) implies x = y for all x, y in G. If this property holds, then f is a monomorphism. If it also satisfies f preserving the group operations, f is a homomorphism.
c) To determine if f is an epimorphism, we need to check if it is surjective. That is, we need to check if for every h in H, there exists at least one g in G such that f(g) = h. If this property holds, then f is an epimorphism. If it also satisfies f preserving the group operations, f is a homomorphism.

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A regular linear regression model is statistically helpful in providing a good fit to the information that can be used to make precise predictions about new information agendas.

A linear regression model is useful when the explanation of a significant amount of variation of the dependent variable utilizes one or more independent variables. The usability of a linear regression model can be comprehended by examining various statistical measures for instance

R-squared value of 1 shows that all of the changes in the dependent variable are elaborated by the independent variable, Hence, an R-squared value of 0 points that none of the variations is elaborated

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Answer:

The slope of the best-fit line shows that as time increases, the total number of calories that a teenager consumes throughout the day also increases.