i will give u brianliest

Answer: A   4

step by step explmationn

Answer:

C. 4.25

Step-by-step explanation:

You would want to subtract the one so you could subtract it to 18 then divide 4 by 17 to get 4.25

25% is 50% of 50.

Explaination is on the picture.

50% of 100 is 50.

A value or ratio that may be stated as a fraction of 100 is referred to as a percentage in mathematics. If we need to calculate a percentage of a number, we should divide it by its entirety and then multiply it by 100.

Let x be a number such that

50% of x is 50

This forms an equation in one variable which can be solved by transposition.

\(50/100\times x = 50\)

x/2=50

On multiplying 2 both sides,

\(X/2\times 2 =50\times 2\)

X=100

Thus, 50% of 100 is 50.

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Correct question:

50% of what is 50.

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:

53.34

Step-by-step explanation:

Let the number of miles be m.

\(\frac{m}{1}=\frac{613.4}{11.5} \approx 53.34\)

Answer:

n = 2

Step-by-step explanation:

16 + 2n = 20

2n = 4

n = 2

Step-by-step explanation:

3b-3=3(b-1)

3.5+4=7,5

The system of linear equations are;

a + b = 5.30

a + b = 7

Expressing the information as a system of linear equations:

Consider that apples = a, oranges = b

If $5.30 is charged for one apple and one orange, then we get the equation as

a + b = 5.30 - - - (1)

If $14 is charged for 2 apples and 2 oranges,  then we get the equation as ;

2a + 2b = 14 - - - - (2)

a + b = 7

Since both equations give varying combined cost for an equal amount of fruit, so a unique cost cannot be obtained for each fruit from the systems of equation using a simultaneous equation process.

From (1)

a = 5.30 - b

Put a, b in (2)

2(5.30 - b) + 2b = 14

10.6 - 2b + 2b = 14

10.6 = 14

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Answer: 2.7mm

Step-by-step explanation:

The formula for the circumference of a circle is given as 2πr. In thkw case, thw circumference is 17mm.

Therefore, 2πr = 17

2 × 3.14 × r = 17

6.28r = 17

r = 17/6.28

r = 2.7mm

Therefore the radius of the circle is 2.7mm

Answer:

AOB

Step-by-step explanation:

An obtuse angle is larger than 90 and less than 180

COB = 90

AOB is larger than COB and less than 180

Answer:

6.2

Step-by-step explanation:

Answer:

y = 2x - 1

Step-by-step explanation:

Because the z-critical value for a 95% C.I is longer than the z-critical value for a 90% C.I, the 95% c.I is always wider than the 90% CI for any given sample.

We are aware that the width of the C.I. ale o inverses grows with confidence level. As a result, the 95% C.I. is wider than the 90% C.I. since the critical value of the 95% C.I. is higher.

Because the z-critical value for a 95% C.I is longer than the z-critical value for a 90% C.I, the 95% c.I is always wider than the 90% CI for any given sample.

Percentage:

Use the percentage formula to express a number or percentage in terms of 100. % simply indicates one out of one hundred. An expression for a number between 0 and 1 can be made using the percentage formula. It is a number that is represented as a fraction of 100. The sign % is used to denote it and it is mostly used to compare and calculate ratios. The formula for percentage increases is the ratio of the increased value to the original value multiplied by 100. It is described in percentage form. If anything is valued more highly, both its value and proportion will rise.

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Given:

The series is

\(2x+2x^2+2x^3+...+2x^n\)

To find:

Whether the given series is arithmetic, geometric, both, or neither.

Solution:

We have,

\(2x+2x^2+2x^3+...+2x^n\)

Difference between consecutive terms are:

\(d_1=a_2-a_1\)

\(d_1=2x^2-2x\)

\(d_1=2x(x-1)\)

And,

\(d_2=a_3-a_2\)

\(d_2=2x^3-2x^2\)

\(d_2=2x^2(x-1)\)

Here, \(d_1\neq d_2\).

So, the given series is not an arithmetic series.

Ratio between consecutive terms are:

\(r_1=\dfrac{a_2}{a_1}\)

\(r_1=\dfrac{2x^2}{2x}\)

\(r_1=x\)

And,

\(r_2=\dfrac{a_3}{a_2}\)

\(r_2=\dfrac{2x^3}{2x^2}\)

\(r_2=x\)

Similarly upto last pair of consecutive terms.

\(r_{n-1}=\dfrac{a_n}{a_{n-1}}\)

\(r_{n-1}=\dfrac{2x^n}{2x^{n-1}}\)

\(r_{n-1}=x\)

Since, \(r_1=r_2=...=r_{n-1}\), so the given series have a common ratio.

Therefore, it is a geometric series.

Answer: What is the balanced equation for so2 O2 SO3?

2SO2 + O2 → 2SO3.

Step-by-step explanation:

When comparing means of three or more conditions, an analysis of variance (ANOVA) should be used instead of multiple t-tests. This is because using multiple t-tests increases the risk of a type I error, where a significant difference is found when there is none. ANOVA controls for this by using a single test to determine if there is a significant difference between the means. Additionally, using multiple t-tests increases the risk of a type II error, where a significant difference is not found when there is one.

ANOVA is also more likely to detect statistical significance between the means because it takes into account the variability within each condition as well as the variability between conditions. This increases the power of the test and reduces the chances of missing a significant difference between the means.

When using ANOVA, the results can indicate that there are no differences between any of the population means (option a), that at least one of the three population means is different from another population mean (option b), that all three of the population means are different from each other (option c), or that one population mean is different from one of the other population means, but not the other population mean (option d).

Finally, ANOVA provides a measure of effect size, typically reported as r2, which indicates the proportion of variability in the data that can be attributed to the differences between the conditions. This can be useful in determining the practical significance of the results.

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Answer:

adjacent interior angle

Step-by-step explanation:

Answer:

im pretty sure shes right

Step-by-step explanation:

The answer to C is 1.5 or 3/2

Since we know that 2x is equal to 3 because the solution is three and 3+3=6 then we divide 3 by 2 to get 3/2

Answer:

$5820.07

Step-by-step explanation:

Substitute 243 into the equation for n:

\(c=117\sqrt[3]{243^{2} }+1264\\c=117\sqrt[3]{59049}+1264\\c=117*38.9407384+1264\\c=4556.06639+1264\\c=5820.06639\)

Round 5820.06639 to the nearest hundredth:

5820.07

$5820.07

Answer:

1.6 - 1.4 = 0.2

0.2 / 1.4 = 0.14 = 14%

Step-by-step explanation:

Answer:

The answer is

11x+15

Hope it will help you

a) This test is one-sided. b) Hypotheses: Null hypothesis (H0): is not significantly greater than the allowable limit (μ <= 51 mg/I). Alternative hypothesis (H1): significantly greater than the allowable limit (μ > 51 mg/I). c) Using a z-table or calculator, the critical value for α = 0.02 is approximately 2.055. d) The test statistic is = 5.625 e) This p-value is very small and can be approximated as less than 0.001. f) There is strong evidence to suggest that the concentration of the pollutant in the Liesbeek river exceeds the allowable limit.

(a) The test in question is one-sided because it specifically aims to determine if the pollutant concentration exceeds the safe limit (greater than).

(b) The hypotheses being tested are: Null Hypothesis (H0): The mean pollutant concentration is equal to or below the safe limit (μ ≤ 51 mg/l). Alternative Hypothesis (H1): The mean pollutant concentration exceeds the safe limit (μ > 51 mg/l).
c) To determine the critical value, we need to find the z-score corresponding to the significance level of 2% (α = 0.02) in the upper tail of the standard normal distribution. Using a z-table or calculator, the critical value for α = 0.02 is approximately 2.055.

d) The test statistic can be calculated using the formula: test statistic = (sample mean - population mean) / (standard deviation / sqrt(sample size)) test statistic = \(\frac{(52.25 - 51)}{\frac{2}{\sqrt{25} } }\), test statistic = \(\frac{2.25 }{0.4}\), test statistic = 5.625

e) To determine the p-value of the test statistic, we compare it to the critical value. Since the test is one-sided and the test statistic is positive, the p-value is the probability of observing a test statistic greater than or equal to 5.625 in the upper tail of the standard normal distribution. This p-value is very small and can be approximated as less than 0.001.
f) Based on the p-value being smaller than the significance level of 0.02, we reject the null hypothesis. There is strong evidence to suggest that the concentration of the pollutant in the Liesbeek river exceeds the allowable limit.

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Answer:

second option

Step-by-step explanation:

Answer:

Mean

Step-by-step explanation:

The value of a is -5 after Fiona divided 3x² + 5x - 3 by 3x+2.

To find the value of a, we need to perform a polynomial division of 3x² + 5x - 3 by 3x + 2. The result of the division is a polynomial plus a remainder, which should be equal to ax + b for some constants a and b. The constant b represents the remainder over the divisor, so we can set the expression equal to b to find its value. When dividing 3x² + 5x - 3 by 3x + 2 using polynomial long division, we get:

            x                

3x + 2 | 3x² + 5x - 3

            - 3x² - 2x    

             3x - 3

            3x + 2        

                -5

Therefore, the remainder is -5, which is represented by the expression a = -5.

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Center of mass: 0.065g/3 units below release point at t=300ms. and Center of mass velocity: gt - 0.2g/3 at t=300ms.

i) At t=300ms, the center of mass of the two stones is located 0.065g/3 units below the release point. This can be obtained by calculating the individual displacements of the stones using the equations d1 = (1/2)gt^2 and d2 = (1/2)g(t-0.1)^2. Then, using the formula for the center of mass displacement, d_com = (d1 + 2d2) / 3, we substitute the values to find the answer.

ii) At t=300ms, the center of mass velocity is given by v_com = gt - 0.2g/3. This is derived by taking the derivatives of the displacement equations for the stones, d1' = gt and d2' = g(t-0.1), and substituting them into the equation for the center of mass velocity, v_com = (d1' + 2d2') / 3. Simplifying further, we obtain the final expression for the center of mass velocity.

Therefore, at t=300ms, the center of mass of the two stones is located 0.065g/3 units below the release point, and it is moving with a velocity of gt - 0.2g/3.

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A)

If the order of choice is taken into consideration, we consider four possibilities for the first choice and three for the second. Then the total number of ways is given by:

B)

If the order of choices is not taken into consideration, we must divide the the previous result by 2, which is the total number of ways by which we can organize two letters (ex: AB and BA):