easy please help 8th grade math

why do these problems even exist, such a tedious process.


(6 * 15) + 10 = 100

Answer:

15*6+10

Step-by-step explanation:

15*6= 90

90+10= 100

The smallest positive value x is mathematically given as

\(x= \pi/B\)

Generally, the equation for is mathematically given as

d) for a displacement of the wave at t=0 is 30 sec

\($A \sin (B x-C(0))=0$\)

\(\begin{aligned}-A \sin B x &=0 \\\sin B x &=\sin n \pi \\B x &=m \pi\end{aligned}\)

Therefore, x=(n \pi)/ 8

Since n equals one for the smallest value, the equation that follows provides an answer for the smallest positive value of x that can be found.

\(\begin{aligned}x &=\frac{n \pi}{B} \\&=\frac{(1) \pi}{B} \\x &=\frac{\pi}{B}\end{aligned}\)

In conclusion, the smallest positive value x is

x= \pi/B

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Complete Question

The complete Question is attached below

(a)The percent chance of winning if you buy one ticket is 1.1%.

(b) the percent chance of winning at least one ticket is 100% - 97.8% = 2.2%.

(c)the percent chance of winning at least one ticket is 100% - 93.3% ≈ 6.7%.

The probability of winning a raffle ticket is calculated by dividing the number of winning tickets by the total number of tickets. In this case, we know that 1.1% of the tickets are winners.

a) When you buy one ticket, your chance of winning is the same as the percentage of winners, which is 1.1%.

b) If you buy two tickets, you can calculate the chance of winning at least one of the tickets by finding the probability of not winning both tickets and subtracting it from 100%. The probability of not winning one ticket is 98.9% (100% - 1.1%). Therefore, the probability of not winning both tickets is (98.9%)*(98.9%) = 97.8%. Subtracting 97.8% from 100% gives us the chance of winning at least one ticket, which is 2.2%.

c) Similarly, for six tickets, we calculate the probability of not winning all six tickets. The probability of not winning one ticket is 98.9%, so the probability of not winning all six tickets is (98.9%)^6 ≈ 93.3%. Subtracting 93.3% from 100% gives us the chance of winning at least one ticket, which is approximately 6.7%.

Therefore, as you increase the number of tickets you buy, your chances of winning increase, but they are still dependent on the overall percentage of winning tickets in the barrel.

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The likelihood that one unknown probability exceeds another in view of the evidence of two samples can be assessed using statistical inference methods. One common approach is to perform hypothesis testing.

Here is a step-by-step explanation of how to determine the likelihood:

1. Formulate the null and alternative hypotheses:
  - The null hypothesis (H0) assumes that the two probabilities are equal.
  - The alternative hypothesis (H1) assumes that one probability exceeds the other.

2. Choose an appropriate statistical test:
  - The choice of test depends on the nature of the data and the specific question being addressed. Common tests include the z-test and the t-test.

3. Collect two independent samples:
  - The samples should be representative of the population and should have sufficient size to provide reliable results.

4. Calculate the test statistic:
  - The test statistic quantifies the difference between the sample proportions or means.

5. Determine the critical value or p-value:
  - The critical value is compared to the test statistic to make a decision.
  - The p-value is the probability of observing a test statistic as extreme as the one obtained, assuming the null hypothesis is true.
  - If the p-value is smaller than a predetermined significance level (usually 0.05), we reject the null hypothesis in favor of the alternative hypothesis.

6. Interpret the results:
  - If the null hypothesis is rejected, we conclude that there is evidence to suggest that one probability exceeds the other.
  - If the null hypothesis is not rejected, we fail to find evidence to suggest that one probability exceeds the other.

It's important to note that the interpretation of the results depends on the specific context of the question and the nature of the data. Additionally, the choice of test and assumptions made should be carefully considered to ensure accurate inference.

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Answer:

n=6

Step-by-step explanation:

1/2n+3=6

     -3.  -3

1/2n=3

X2.   x2

n=6

Hopes this helps please mark brainliest

Answer:

\(\huge\boxed{\sf n = 6}\)

Step-by-step explanation:

\(\displaystyle \frac{1}{2} n+3=6\\\\Subtract\ 3 \ to \ both \ sides\\\\\frac{1}{2} n=6-2\\\\\frac{1}{2} n = 3\\\\Multiply \ 2 \ to \ both \ sides\\\\n = 3 \times 2\\\\n = 6\\\\\rule[225]{225}{2}\)

A. The functions are classified as follows:

B. The functions are defined as follows:

C. The value of each house after 25 years is given as follows:

There is a significant difference in the value of either house after 25 years, as exponential functions increase faster than linear functions, especially for larger input values.

A function is classified as exponential if when the input variable is changed by one, the output variable is multiplied by a constant.

Hence the house 1 has the value function as an exponential function, as:

312,519.92/303,417.40 = 303,417.40/294580 = 1.03

The function is defined as follows:

f(x) = 294580(1.03)^x.

And the value of the home after 25 years is given as follows:

f(25) = 294580(1.03)^25 = $6176,785.

A function is classified as linear if when the input variable is changed by one, the output variable is increased/decreased by a constant.

Hence the value of the house 2 is linear, as the rate of change each year is of $9,000.

The function is defined as follows:

f(x) = 295000 + 9000x.

The value after 25 years is given as follows:

f(25) = 295000 + 9000(25) = $520,000.

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Answer:

8.5 quarts

Step by step explanations:

divide the volume value by 2

Answer:  The slope-intercept form is y = -2x + 10

Step-by-step explanation:

Step 1: The y-intercept is the point where x=0, so that is (0,10)

Step 2: Use the points (-2,14) and (-1,12) to find the slope

Slope (m) = ΔY/ΔX = -2/1 = -2

Step 3: The slope-intercept form is:

y = mx+b

y = (step 2 value) x + (step 1 value)

y = -2x+10

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Answer:

just pay attention dude

Answer:

The answer for the first part would be 3.89 minutes for the eight graders. There are 60 seconds in one minute so you’d have to take away 29 and add it to the full 4 minutes, which makes the 8th graders best time for the race 4.29 minutes. That’s more than 4 minutes, so the seventh graders would earn the points instead.

Step-by-step explanation:

The seventh graders would earn the points instead and awarded 40 points.

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

We are given that If the team’s best time for the race is less than 4 minutes, then the eighth graders earn 40 points.

If not, the seventh graders earn 40 points.

There are 60 seconds in one minute so, we have to take away 29 and add it to the full 4 minutes, which makes the 8th graders best time for the race 4.29 minutes.

That’s more than 4 minutes, therefore, the seventh graders would earn the points instead.

Hence, 3.89 minutes for the eight graders.

The seventh graders would earn the points instead and awarded 40 points.

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Answer:

the entrance fee per parent is $25, while the cost per child is $6.

Answer:

144m^3

Step-by-step explanation:

Answer:

935.65 minutes.

Step-by-step explanation:

The battery life of the nth model can be represented by the exponential function:

f(n) = 735(1.04)^(n-1)

where n is the number of the model.

To find the battery life of the latest model 7 months from now, we need to find f(8):

f(8) = 735(1.04)^(8-1)

f(8) = 735(1.04)^7

f(8) = 935.65

Therefore, the battery life of the latest model 7 months from now will be approximately 935.65 minutes.

Note: The battery life is rounded to two decimal places.

Word form One hundred three and five hundred three thouandth

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Answer:

$1.00

Step-by-step explanation:

20/10=2

Answer:

$2 per candy

Step-by-step explanation:

20 \ 10 = 2

Answer:

x<-2

Step-by-step explanation:

17+4x<9

4x<-8

x<-2

The solution is:

Work/explanation:

Recall that the process for solving an inequality is the same as the process for solving an equation (a linear equation in one variable).

Make sure that all constants are on the right:

\(\bf{4x < 9-17}\)

\(\bf{4x < -8}\)

Divide each side by 4:

\(\bf{x < -2}\)

Answer: y = 17x + 114

Step-by-step explanation:

The equation for the slope-intercept form is y = mx + b.

Arrange the equation so that it resembles y = mx + b.

You will do this by multiplying and subtracting so y is on the left side of the equation and mx + b is on the right side of the equation.

y + 5 = 17(x + 7)

y + 5 = 17x + 119

y + 5 - 5 = 17x + 119 - 5

y = 17x + 114

Answer:

Y = 17x + 114

Step-by-step explanation:

1. Y + 5 = 17 (x+7)

2. Y + 5 = 17x + 119   [Multiply the numbers in parenthesis by 17.]

3. Y = 17x + 114.     [To keep the balance and move the 5 over, subtract it from 119.]

The probability of rolling a sum greater than 10 is 4/36, which simplifies to 1/9, or approximately 0.1111.

There are 36 possible outcomes when rolling two 6-sided dice. Each outcome is equally likely.

To find the probability of rolling a sum greater than 10, we need to count the number of outcomes where the sum is greater than 10, and then divide by the total number of outcomes.

The outcomes where the sum is greater than 10 are:

4 + 6 = 10

5 + 6 = 11

6 + 5 = 11

6 + 6 = 12

So there are 4 possible outcomes where the sum is greater than 10.

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Answer:

hey

Step-by-step explanation:

Given that cos(θ) = -33/65 and θ terminates in quadrant IV, we can determine the remaining trigonometric functions. The values are: sin(θ) = -56/65, tan(θ) = 56/33, csc(θ) = -65/56, sec(θ) = -65/33, and cot(θ) = 33/56.

We know that cos(θ) = -33/65, which is negative in quadrant IV. In this quadrant, the sine function is negative, so sin(θ) = -sqrt(1 - cos²(θ)) = -sqrt(1 - (-33/65)²) = -56/65.

To find the remaining trigonometric functions, we can use the definitions and relationships between the trigonometric functions. We have tan(θ) = sin(θ)/cos(θ) = (-56/65) / (-33/65) = 56/33.

Using the reciprocal identities, we find csc(θ) = 1/sin(θ) = -65/56, sec(θ) = 1/cos(θ) = -65/33, and cot(θ) = 1/tan(θ) = 33/56.

Therefore, the remaining trigonometric functions of θ, based on the given information, are sin(θ) = -56/65, tan(θ) = 56/33, csc(θ) = -65/56, sec(θ) = -65/33, and cot(θ) = 33/56.

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If the length of a rectangle is nine inches more than its width and its area is 442 square inches, the width of the rectangle is 17 inches and its length is 26 inches.

Let's denote the width of the rectangle as "w" and its length as "l". From the problem statement, we know that:

l = w + 9 (since the length is nine inches more than the width)

The area of the rectangle is given by the formula:

A = l * w

Substituting in the expression for "l" in terms of "w", we get:

A = (w+9) * w

Simplifying, we get a quadratic equation:

w^2 + 9w - 442 = 0

We can solve this equation by factoring or using the quadratic formula. Factoring gives:

(w+26)(w-17) = 0

Therefore, the possible values for "w" are -26 and 17. However, since the width of the rectangle cannot be negative, we can eliminate -26 as a possible value. Thus, the width of the rectangle is 17 inches.

Using the expression for "l" in terms of "w", we can find the length:

l = w + 9 = 17 + 9 = 26 inches

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Answer: $23.92

Step-by-step explanation:

First, we know that 6 bagels is $2.99.

48/6=8

This means that 6 is a multiple of 48, which makes it easier to solve.

$2.99 x 8 = 23.92

= $23.92

Using the given information we found that the equation of the parabola is:

y = (-4/9)*(x - 3)^2 + 5

And its graph is below.

For a parabola with vertex (h, k), the equation is:

y = a*(x - h)^2 + k

Here the vertex is (3, 5), so the equation is:

y = a*(x - 3)^2 + 5

And the y-intercept is y = 1, this means that:

1 = a*(0 - 3)^2 + 5

1 = a*9 + 5

1 - 5 = a*9

-4/9 = a

So the parabola is:

y = (-4/9)*(x - 3)^2 + 5

And its graph is below.

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Answer:

y-7=-13(x-5)

Step-by-step explanation:

y-y1=m(x-x1)

y-7=-13(x-5)

Answer:

B.

Step-by-step explanation:

A = ab/2

A = (6 cm)(10 cm)/2

A = 30 cm^2

Answer: B.

Answer:

-65d - 55

Step-by-step explanation:

Given expression,

→ -5(13d + 11)

Simplifying the expression,

→ -5(13d + 11)

→ (-5 × 13d) + (-5 × 11)

→ -65d + (-55)

→ -65d - 55

Thus, answer is -65d - 55.

Step-by-step explanation:

the 1st side length is 4x+1 if x is the width. 2(length)+2(width)=perimeter

2(4x+1)+2x=92

8x+2+2x=92

10x=90

x=9

width=x=9

length=4x+1=4(9)+1=37

Hope that helps :)