I AM IN DESPERATE NEED OF HELP!! IM SO LOST PLEASE HELP

Answer:

Students in her classes At the beginning of the semester, but 13 students withdraw from her classes before Test three. So now she has 150 students. If she has one classes in total, in each class has an equal number of students. How many students are in each class round your answer to the nearest ones? Well, first of all, if she only has one class, then there's 150 students in that class is or class, this is the middle school math teacher signing out.

lazyuser30

well, we know the first $25,000 is taxed at 8%, wait a second!!!!! Chris didn't make 25,000 bucks, he only made $17,000, so he'd be in the range of $0 - $25,000 because $17,000 is in that range, that means he owes 8% of 17,000

\(\begin{array}{|c|ll} \cline{1-1} \textit{\textit{\LARGE a}\% of \textit{\LARGE b}}\\ \cline{1-1} \\ \left( \cfrac{\textit{\LARGE a}}{100} \right)\cdot \textit{\LARGE b} \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{8\% of 17000}}{\left( \cfrac{8}{100} \right)17000}\implies 1360\)

The amount Chris owes in tax is $1360.

The percentage is calculated by dividing the required value by the total value and multiplying by 100.

Example:

Required percentage value = a

total value = b

Percentage = a/b x 100

Example:

50% = 50/100 = 1/2

25% = 25/100 = 1/4

20% = 20/100 = 1/5

10% = 10/100 = 1/10

We have,

The first $25,000 is taxed at 8%.

This means,

Amount from 0 to $25000 is taxed at 8%.

Now,

Chris earned = $17,000

Tax amount.

= 8% of 17,000

= 8/100 x 17,000

= 8 x 170

= $1360

Thus,

The tax amount is $1360.

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Answer:

  10√2 -15√5

Step-by-step explanation:

Radicals are simplified by factoring out squares. Like radicals can be combined.

  \(\sqrt{2}-(5\sqrt{20}-3\sqrt{18}+\sqrt{125})\\\\=\sqrt{2}-(5\sqrt{4\cdot5}-3\sqrt{9\cdot2}+\sqrt{25\cdot5})\\\\=\sqrt{2}-10\sqrt{5}+9\sqrt{2}-5\sqrt{5}\\\\=\boxed{10\sqrt{2}-15\sqrt{5}}\)

Answer:

d for sure

Step-by-step explanation:

The expected winning and the value of that prize, which gives an expected winning is c. $3.13 per ticket.

The expected winnings per ticket in the raffle can be calculated by adding the products of the probability of the expected value of winning each prize. The predicted wins per ticket may be computed as the total of each prize's value multiplied by its probability of winning, i.e.

Expected winnings per ticket

= (1/800) × $400 + (4/800) × $200 + (12/800) × $125 + (30/800) × $60 + (753/800) × $0

If we condense the equation, we obtain:

Calculating the total wins anticipated per ticket

= $0.50 + $1.00 + $1.88 + $0.75 + $0

Expected winnings per ticket = $3.13

Therefore, if you buy a ticket, the expected winnings per ticket are $3.13.

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Complete question:

For a fundraiser, there is a raffle with 800 tickets, each costing $15. 1 ticket will win a $400 prize, 4 tickets will win a $200 prize, 12 tickets will win a $125 prize, 30 tickets will win a $60 prize, and the remaining tickets will win nothing. if you buy a ticket, what are the expected winnings per ticket? question options:

a) $5.36

b) $5.63

c) $5.33

d) $5.66

Answer:

The given relation is not a function if there exist multiple values of y for a single value of x.

We cannot determine whether the relation is a function or not by looking at the first three pairs.

For the fourth pair, we need to ensure that there is only one value of y for any given value of x. Therefore, x cannot be equal to 12, -11, or 33 because those values have already been assigned a specific y value. If x is equal to any of those values, it would create a situation where there are multiple y values for the same x value, violating the definition of a function.

Therefore, x cannot be equal to 12, -11, or 33.

Answer:

15 min

Step-by-step explanation:

Answer:

For the equation given:

\(x + 2y = 16 \\ 2y = - x + 16 \\ y = - \frac{1}{2} x + 8\)

for perpendicular lines, the relationship between their slopes is given by:

\(m _{1} \times m _{2} = - 1\)

m1 is slope for one line, and m2 is slope for another line.

\( - \frac{1}{2} \times m_{2} = - 1 \\ \\ m_{2} = - 1 \times - 2 \\ { \underline{ \: \: m_{2} = 2 \: \: }}\)

Therefore, equation is;

\({ \boxed{ \boxed{y = 2x - 2}}}\)

Answer:

The positive regions of a function are those intervals where the function is above the x-axis. It is where the y-values are positive (not zero). The negative regions of a function are those intervals where the function is below the x-axis. It is where the y-values are negative (not zero).

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

just answered it !

The value of a Chi-Square goodness-of-fit test at a 5% significance level is 13.45

We need to perform a Chi-Square goodness-of-fit test at a 5% significance level.

First we need to calculate the expected count

expected value = ∑(x)/n

= (40 + 33 + 35 + 32 + 60)/5

= 200/5

= 40

Now we need tocalculate the test statistic value

Observed  expected  O - E    (O - E)^t/E       %

40                40             0            0                   0

33                40             -7          1.225          9.11

35                40             -5          0.625         4.65

32                40             -8         1.6                11.90

60                40             20        10                 74.35

Chi square test is 13.45

Therefore, the value of test statistics is 13.45.

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Answer:

1/3 is the simplified answer

Answer:

32.5 - 18.3 = 14.2 meters of the pipe was left.

\(\qquad \qquad\huge \underline{\boxed{\sf Answer}}\)

For the given question, we have to perform simple subtraction :

\( \qquad \sf  \dashrightarrow \: 32.5 - 18.3\)

\( \qquad \sf  \dashrightarrow \:14 .2 \: m\)

( 2x − 27 ) ( −x + 15 )

= ( 2x + −27 ) ( −x + 15 )

= ( 2x ) ( −x ) + ( 2x ) ( 15 ) + ( −27 ) ( −x ) + ( −27 ) ( 15 )

= −2x^2 + 30x + 27x − 405

= −2x^2 + 57x − 405

The ratio of the number of jackets to the number of sweaters is 1:4.

According to the question,

The ratio of the number of shirts to the number of trousers = 4:5

∴ Let the number of shirts be 4x and that of trousers be 5x.

The ratio of the number of jackets to the number of shirts = 3:8

∴ Let the number of jackets be 3y and that of the shirts be 8y.

The ratio of the number of sweaters to the number of trousers = 6:5

∴ Let the number of sweaters be 6z, and that of trousers be 5z.

Now,

Number of shirts = 4x = 8y

                           ⇒ x = 2y.               (1)

Number of trousers = 5x = 5z

                            ⇒ x = z                 (2)

From eq.(1) and eq.(2), we get,

x = 2y = z

⇒ z = 2y                                              (3)

But, from above, we have, the number of sweaters = 6z

                                                                                     = 6 × 2y    {from eq.(3)}

                                                                                     = 12y

∴ The ratio of the number of jackets to the number of sweaters = 3y ÷ 12y

                                                                                                    = 1:4

Hence, the ratio of the number of jackets to the number of sweaters is 1:4.

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Answer:

The ratio of the number of jackets to the number of sweaters is 1/4.

Step-by-step explanation:

Let's assign variables to the quantities mentioned in the problem:

Let S be the number of shirts.

Let T be the number of trousers.

Let J be the number of jackets.

Let W be the number of sweaters.

We are given the following ratios:

The ratio of shirts to trousers: S/T = 4/5

The ratio of jackets to shirts: J/S = 3/8

The ratio of sweaters to trousers: W/T = 6/5

We need to relate these variables using the given information to find the ratio of jackets to sweaters (J/W).

First, let's simplify the given ratios:

S/T = 4/5 can be rewritten as S = (4/5)T

J/S = 3/8 can be rewritten as J = (3/8)S

W/T = 6/5 can be rewritten as W = (6/5)T

Now, substitute these expressions into the ratio we are trying to find:

J/W = (J/S)/(W/T)

= [(3/8)S]/[(6/5)T]

= [(3/8)(4/5)T]/[(6/5)T]

= (3/8)(4/5)/(6/5)

= (3/8)(4/6)

= (3/8)(2/3)

= 6/24

= 1/4

Therefore, the ratio of the number of jackets to the number of sweaters is 1/4.

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To calculate the amount in the account at the end of the two-year period, we need to determine the total amount deposited and the interest earned.

The deposits are made quarterly for two years, which means there will be a total of 8 deposits (4 deposits per year * 2 years).

Each deposit is $100, so the total amount deposited over the two years is 8 * $100 = $800.

Now, let's calculate the interest earned. The interest rate is 12% per year, and since the deposits are made quarterly, we need to adjust the interest rate accordingly. The quarterly interest rate is 12% / 4 = 3%.

We can use the formula for the future value of a series of deposits:

Future Value = Deposits * [(1 + Interest Rate)^Number of Periods - 1] / Interest Rate

Plugging in the values:

Future Value = $100 * [(1 + 0.03)^8 - 1] / 0.03

Calculating this expression:

Future Value = $100 * [1.03^8 - 1] / 0.03

Future Value ≈ $921.50

Therefore, the amount in the account at the end of the two-year period, with the given conditions, is closest to $921. Hence, the closest option from the given choices is $921.

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Answer:

-24/23 = x

Step-by-step explanation:

Step 1: Write equation

x - 12 = -4(-6x - 3)

Step 2: Solve for x

Distribute -4: x - 12 = 24x + 12

Subtract x on both sides: -12 = 23x + 12

Subtract 12 on both sides: -24 = 23x

Divide both sides by 23: -24/23 = x

The answer is: a. Yes, the forecast fails the bias test.

To determine whether the forecast fails the bias test, we need to compare the Average Error (AE) with zero.

If the AE is significantly different from zero, it indicates the presence of bias in the forecast. If the AE is close to zero, it suggests that the forecast is unbiased.

In this case, the Average Error (AE) is -2.0, which means that, on average, the forecast is 2.0 units lower than the actual values. Since the AE is not zero, we can conclude that there is a bias in the forecast.

Therefore, the answer is:

a. Yes, the forecast fails the bias test.

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Answer:

1) AD = 9 in

2) DE = 9.25 in

3) ∠EDC = 36°

4) ∠AEB = 108°

5) 11.5 in

Step-by-step explanation:

1) AD = BC = 9in

2) AC = BD (diagonals are equal)

⇒ BD = 14.25

⇒ BE + DE = 14.25

⇒ 5 + DE = 14.25

DE = 9.25

3) Since AB ║CD,

∠ABE = ∠EDC = 36°

4) ∠ABE = ∠BAE = 36°

Also ∠ABE + ∠BAE + ∠AEB = 180 (traingle ABE)

⇒ 36 + 36 + ∠AEB = 180

∠AEB = 108

5) midsegment = (AB + CD)/2

= (8 + 15)/2

11.5

Answer:

\(\frac{27}{4}\) or \(6\frac{3}{4}\)

Step-by-step explanation:

6.75 = \(6\frac{3}{4}\) = \(\frac{27}{4}\)

Because 0.75 = \(\frac{3}{4}\)

I would appreciate it if you mark my answer as brainliest.

Answer:

6 3/4

Step-by-step explanation:

so first 1/4 equals to 0.25

so if 1/4 is 0.25 than 3/4 would be 0.75

6 in this equation represents 24/4

so it would be (24+3)/4

which is 27/4

after simplifying you would get 6 3/4

The linear equation y = 5 · x - 14 is a possible equation that intercepts the line 2 · x + y = 0 at point (x, y) = (2, - 4),

To generate a system of linear equations, we need to derive an additional that intercepts the line 2 · x + y = 0 at point (x, y) = (2, - 4). We need to find an equation of the form:

y = m · x + b

Where:

Please notice that there are more than a single choice. First, choose the slope of the line:

m = 5

Second, substitute the slope and the independent and dependent variables:

b = y - m · x

b = - 4 - 5 · 2

b = - 14

Third, write the resulting linear equation:

y = 5 · x - 14

The linear equation y = 5 · x - 14 is a possible equation of the system of equations.

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The two theoretical quantities of ANOVA (Analysis of Variance) are:
1. Between-group variance.

2. Within-group variance:

1. Between-group variance.

This is the variance that can be attributed to differences between the group means.

It is calculated by comparing the mean of each group to the overall mean of all the data points.

The larger the between-group variance, the more likely there are significant differences between the groups.
2. Within-group variance:

This is the variance that can be attributed to differences within each group, i.e., the individual differences among the data points in each group.

It is calculated by comparing the individual data points in each group to their respective group mean.

The smaller the within-group variance, the more likely the groups are homogeneous.
In ANOVA, these two quantities are compared using an F-ratio.

If the between-group variance is significantly larger than the within-group variance, it indicates that there are significant differences between the group means, and the null hypothesis can be rejected.

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Answer:

b and c

Step-by-step explanation:

x+30<60 -->x < 60 -30 = 30 --> x < 30

Answer:

B and C

Step-by-step explanation:

We can solve for x in the inequality just like you do when solving algebra equations of an = sign.

x + 30 < 60

x + 30 - 30 < 60 -30

x < 30

"<" means the number on the left is smaller than the number on the right. Both numbers must not be equal to each other.

Since x is smaller than 30, and is not 30,

the only option that is correct is B, 1 and C, 29.

The value of the number is 12

Note that algebraic expressions are expressions composed of terms, coefficients, variables, constants and factors.

They are also made up of arithmetic operations like addition, multiplication, division, subtraction, bracket, parentheses, etc

From the information given, we have that;

Let the number be x

3(x + 7) = 6x - 24

collect the like terms

3x + 21 = 6x - 24

3x - 6x = -24 - 21

subtract the terms

-3x = - 35

Make 'x' the subject of formula

x = 12

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Answer:

$21 / 6 burgers= price per burger

$3.50 per burger

Brainiest plz?

Answer:

The slope of g(x) is less than the slope of f(x)

Step-by-step explanation:

Find the slopes of both lines with rise/run

f(x): 3/1 = 3

g(x): 2/4 = 1/2

The slope of g(x) is less than the slope of f(x)

Answer:

B. The slope of g(x) is less than the slope of f(x)

Step-by-step explanation:

The slope of f(x) is 2/1 or just 2 and the slope of g(x) is 1/2, less than f(x).

The number of small boxes purchased is 4.

The number of large boxes purchased is 2.

The number of nails in a small box is 50, and the number of nails in a large box is 450.

The total number of nails bought is 1100.

Let the number of large boxes be "x".

The number of small boxes is "2x".

An equation is a formula in mathematics that expresses the equivalence of two expressions by linking them with the equal sign.

The equation can be formed as given below :

x*450 + 2x*50 = 1100

450x + 100x = 1100

550x = 1100

x = 2

The number of small boxes purchased is 2*x = 2*2 = 4.

The number of large boxes purchased is x = 2.

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Answer:

4 boxes of small nails.

2 boxes of large nails.

Step-by-step explanation:

Define the variables:

Given information:

Create a system of equations with the given information and defined variables:

\(\begin{cases}x=2y\\50x+450y=1100\end{cases}\)

Substitute the first equation into the second equation and solve for y:

\(\implies 50(2y)+450y=1100\)

\(\implies 100y+450y=1100\)

\(\implies 550y=1100\)

\(\implies \dfrac{550y}{550}=\dfrac{1100}{550}\)

\(\implies y=2\)

Substitute the found value of y into the first equation and solve for x:

\(\implies x=2(2)\)

\(\implies x=4\)

Therefore the contractor purchased:

Answer:

9

Step-by-step explanation:

i can not really tell what letters are on the picture but i think it is 9

Answer:

See below

Step-by-step explanation:

You can always plug in x's and solve for y.