PLEASE HELP! I WILL GIVE BRAINLIEST!

Answer:

Answer:

Below.

Step-by-step explanation:

Reflection in x-axis: (x, y) ----> (x, -y).   (x value stays the same)

Reflection in y-axis: (x, y) ----> (-x, y).   ( y value stays the same)

Answer:

-3

Step-by-step explanation:

first you’d do the things in parentheses

In the parentheses you would simplify the exponent first because PEMDAS

(-3)^2 = 9

-4 + 9 - 6 = -1

Then you would do 15 / 3 which equals 5

5 x -1 = -5

-5 + 2 = -3

Answer:

3rd option

Step-by-step explanation:

=)

Answer:

  \(A=300ml\)

Step-by-step explanation:

From the question we are told that

5% solution of dextrose sugar in water

20% solution of dextrose in

100 milliliters of distilled water water

Generally in mathematically solving we call A the amount of D20W added

Since 20% of dextrose is needed

       \(20 \%*100=20milliter\)

Total quantity after addition (100+x)

for DW5% total solution is

          \(5\% (100+A)= \frac{5}{100}(100+A)\)

          \(5\% (100+A) =5+0.05A\)

Mathematically

           \(5+0.05A =20\)

           \(5+0.05A =20-5\)

           \(A=\frac{15}{0.05}\)

           \(A=300ml\)

Therefore the required quantity \(A=300ml\)

The equation 2x + cos(x) = 0 has exactly one real root. This can be shown by considering the behavior of the function f(x) = 2x + cos(x) and using the intermediate value theorem.

To prove that the equation 2x + cos(x) = 0 has exactly one real root, we need to demonstrate the existence and uniqueness of the root.

Existence of a real root: By considering the behavior of the function f(x) = 2x + cos(x), we can observe that f(x) is continuous for all real numbers. As x approaches negative infinity, the value of f(x) becomes more negative, and as x approaches positive infinity, the value of f(x) becomes more positive. Since f(x) is continuous and changes sign as x varies, the intermediate value theorem guarantees the existence of at least one real root.

Uniqueness of the real root: To prove uniqueness, we consider the derivative of f(x), which is f'(x) = 2 - sin(x). Since the derivative f'(x) is always positive, it indicates that the function f(x) is strictly increasing. As a result, f(x) = 0 can have at most one real root since there are no significant changes in f(x) after the initial root.

Therefore, the equation 2x + cos(x) = 0 has exactly one real root.

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The probability that a person will wait for more than 9 minutes is approximately 0.0912 or 9.12%. This means that out of 100 people, about 9 of them will wait for more than 9 minutes in the line.

To solve this problem, we need to use the normal distribution and standardize the variable of interest. We know that the mean waiting time is 5 minutes and the standard deviation is 3 minutes, so we can write: Z = (X - μ) / σ

where X is the waiting time, μ is the mean waiting time (5 minutes), σ is the standard deviation (3 minutes), and Z is the standardized variable.

To find the probability that a person will wait for more than 9 minutes, we need to find the area under the normal curve to the right of 9. We can do this by standardizing 9 using the formula above: Z = (9 - 5) / 3 = 1.33 .

We can use a standard normal table or a calculator to find the probability that Z is greater than 1.33. Using a calculator, we find that this probability is approximately 0.0912.

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Answer:

p(A or more than 10) = 0.7 + 0.4 - 0.2 = 0.9

Step-by-step explanation:

Given the following probabilifu distribution :

Probability that show had animals in it :p(A) = 0.7

Probability that show aired more than 10 times : p(more than 10) = 0.4

Probability that show had animals and aired more than 10 times: p(A n more than 10) = 0.2

Recall:

P(A or B) = p(A) + p(B) - p(A n B)

Hence,

p(A or more than 10) = p(A) + p(more than 10) - p(A n more than 10)

p(A or more than 10) = 0.7 + 0.4 - 0.2 = 0.9

Tertiary consumers are one level above primary producers in a food chain. In a food chain, the transfer of energy and nutrients occurs from one trophic level to another.

The trophic levels are categorized into producers, primary consumers, secondary consumers, and tertiary consumers.

Primary producers, such as plants or algae, are the first trophic level in a food chain. They convert energy from sunlight into organic matter through photosynthesis. Primary consumers, also known as herbivores, are the organisms that feed directly on primary producers.

Secondary consumers are the next trophic level and they feed on primary consumers. They are usually carnivores or omnivores that consume herbivores.

Finally, tertiary consumers occupy the highest trophic level in a food chain. They are the top predators that feed on secondary consumers. These can include large carnivores or even apex predators.

Therefore, tertiary consumers are one level above primary producers in the food chain. They represent the organisms that obtain energy by consuming other organisms higher up in the trophic hierarchy.

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There are 75 percent of Americans consume alcoholic beverages regularly. so, the correct answer is D).

According to a 2021 survey conducted by the National Institute on Alcohol Abuse and Alcoholism, approximately 75% of adults in the United States reported that they had consumed alcohol in the past year.

However, it's important to note that this does not necessarily mean that they consume alcohol regularly. The percentage of Americans who consume alcoholic beverages regularly may vary depending on how "regularly" is defined and the specific population being studied.

So, the correct option is D).

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The value of the sample statistic is used to estimate the value of the population parameter.

So the appropriate is  D. Sample statistic

Sample statistic :

A sample statistic is a statistical finding based on a small sample size. A sample is only a small portion of the population. Let's imagine you were interested in determining the average income for all Americans in your population. Instead of knocking on every door in America because of time and money constraints, you decide to ask 1,000 random people.

Your sample consists of these a thousand persons. A sample statistic is one that is drawn from a portion of data or a population and contains statistical information (such as an average, median, or other type of statistic).

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The annuity could pay $221.19 per month.

ANNUITY FORMULA: \(P_t=\frac{d\left[\left(1+\frac{s}{n}\right)^{n t}-1\right]}{\frac{s}{n}}\)

Where,

So,

Loren anticipates having $500,000 when he retires.

He establishes a 30-year payout annuity at a 10%interest.

Each month, the annuity could provide

In the formula, replace the above values as follows:

Now, divide both sides by: 2260.487925

Therefore, the annuity could pay $221.19 per month.

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Remember that

If an ordered pair is a solution to an inequality, then the ordered pair must satisfy the inequality

so

we have

y ≥0.5x+1.8

Verify each ordered pair

N 1 -----> (4.5,3)

x=4.5, y=3

substitute

3 ≥0.5(4.5)+1.8

3 ≥ 4.05 ------> is not true

that means ----> the ordered pair is not a solution

N 2 ----> (2.5,2)

2 ≥ 0.5(2.5)+1.8

2 ≥ 3.05 ------> is not true

that means ----> the ordered pair is not a solution

N 3 -----> (3,2.5)

2.5 ≥ 0.5(3)+1.8

2.5 ≥ 3.3 -----> is not true

that means ----> the ordered pair is not a solution

N 4 ----> (4,4.5)

4.5 ≥ 0.5(4)+1.8

4.5 ≥ 3.8 -----> is true

the ordered pair is a solution

therefore

the answer is the last option

Unit rate for first graph = 52 mph

Unit rate for 2nd graph = 67 mph

The two graphs given plot two linear relationships between Distance travelled (mi) and Time (hr.). We need to find the unit rate for each.

Unit rate is the speed calculated when the time is unity, i.e., when time = 1 hr. on both the graphs.

On the first graph the co-ordinate marked is (1,52), which implies the Distance travelled = 52 miles and Time = 1 hr

So the speed = Distance travelled/ Time

                      = 52/1

                      = 52 mph

Thus, the unit rate = 52 mph

On the second graph two co-ordinates are given which are (3,201) and (4,268).

Consider any one co-ordinate to find the speed in this case. Also this speed will be constant as the graph is a straight line between the Distance travelled and the Time.

So consider (3,201) which means Distance travelled = 201 miles and Time = 3 hr

So the speed = Distance travelled/Time

                       = 201/3

                       = 67 mph

Unit rate is the speed when time = 1 hr

Since this speed is constant everywhere on the second graph, the speed when time = 1 hr is also 67 mph.

Hence the unit rate = 67 mph

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Juliet will have  13 cups mixture of the orange juice and water .

Given :-

Juliet already has 9 cups of orange juice , and she adds 32 fluid ounces of water into the  cup of orange uice syrup.

So, we have to find that how much cups of syrup does Juliet had ,

So, we know that

1 cup = 8 ounces

but she adds 32 ounces of water which means

= No. of ounces added / no. of ounces in a glass

= 32 / 8

= 4

therefore ,

9 + 4 = 13 glasses.

which means she has 13 glasses of the syrup made up of water and orange juice .

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Answer:

-9/4

Step-by-step explanation:

A perpendicular slope is on that is the negative reciprocal. current slope=4/9 and the negative recipocal is -9/4.

Answer:

y-1 = 2(x+2)

Step-by-step explanation:

Point slope form of a line is

y-y1 = m(x-x1) where m is the slope and (x1,y1) is a point on the line

y -1 = 2(x - -2)

y-1 = 2(x+2)

Answer:

the 3rd option

Step-by-step explanation:

the x intercept is where the graph crosses. The x axis. Here the slope is negative one half. Count rise over run between two points. Use the ones on the grid

The numerator for the equivalent fractions 2/5 = ?/15 is 6.

The correct answer choice is option D.

A fraction is a value which consists of a numerator (top or upper value) and a denominator (down or lower value).

2/5 = ?/15

cross product

2 × 15 = 5 × ?

30 = 5?

divide both sides by 5

? = 30/5

? = 6

Hence, 6 is the numerator of the fraction.

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Answer:

X= Y/200 - 3/2

Step-by-step explanation:

The unit rate in acres of land planned by the workers per day is found is 16/35 acres.

For the mentioned question-

Total acres of land planted = 2/5 acres.

Total time taken = 7/8 days.

Thus, unit rate in acres per day = Total acres of land planted / Total time taken

unit rate in acres per day = (2/5) / (7/8)

unit rate in acres per day = (2*8)/(5*7)

unit rate in acres per day = 16/35

Thus, unit rate in acres of land planned by the workers per day is found is 16/35 acres.

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The value is the closest estimate of this product is 6,300.

Rules for Rounding Numbers to Nearest 100. Rule 1: While round off to nearest 100, if the digit in the tens place is between 0 to 4 or <5, then the tens place is replaced by 0. Rule 2: If the digit in the unit’s place is equal to 5 or greater than 5, then the tens place is replaced by 0 and the hundreds place is increased by 1.

So 6,265 is between 6,200 and 6,300

Therefore, The value is the closest estimate of this product is 6,300.

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C) 36 yards   18*6=108

108ft to yards is 36

Answer:C

Step-by-step explanation:

Each jump rope is 6 feet long, so 18 jump ropes would require a total of:

18 x 6 = 108 feet of rope

Since there are 3 feet in a yard, we can convert 108 feet to yards by dividing by 3:

108 ÷ 3 = 36 yards

Therefore, the football coach should buy 36 yards of rope. The answer is (C).

The shop makes 25% profit if the cost price per dress is R280.

The one-sample z-statistic for evaluating the hypothesis that unvaccinated people get COVID-19 is not 0.03 is -85.7. This statistic tested the hypothesis that unvaccinated people do not get COVID-19 at 0.03%.

In order to compute the one-sample z-statistic, we must first do a comparison between the observed proportion of COVID-19 instances in the placebo group and the expected proportion of 0.03. (p - p0) / [(p0(1-p0)) / n is the formula for the one-sample z-statistic. In this formula, p represents the actual proportion, p0 represents the predicted proportion, and n represents the sample size.

The observed proportion of COVID-19 instances among those who received the placebo is 162/18325 less than 0.0088. According to the received wisdom, the proportion that should be anticipated is 0.03. The total number of people sampled is 18325. After entering these numbers into the formula, we receive the following results:

z = (0.0088 - 0.03) / √[(0.03(1-0.03)) / 18325] ≈ (-0.0212) / √[(0.0291) / 18325] ≈ -85.7

As a result, the value of the z-statistic for just one sample is about -85.7. This demonstrates that the observed proportion of COVID-19 cases in the unvaccinated population is significantly different from the expected proportion of COVID-19 cases in that population.

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The output of the given code will be:

6

In the code, the variables x and y are assigned the string values of "2" and "4" respectively. The int() function is then used to convert these string values into integers. The variable z is assigned the sum of x and y, which is 2 + 4, resulting in 6. Finally, the print() function is used to display the value of z, which is 6, as the output. Therefore, the correct option is 6.

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Answer:

three fifths

Step-by-step explanation:

The absolute value of any number is the number itself without the negative sign

The negative absolute value of negative three-fifths is a three-fifths option (C) is correct.

Fraction number consists of two parts, one is the top of the fraction number which is called the numerator and the second is the bottom of the fraction number which is called the denominator.

It is given that:

The negative absolute value of negative three-fifths:

= |-3/5|

= -(3/5),     y = |x| if x < 0; y = -(x)

= 3/5

Thus, the negative absolute value of negative three-fifths is a three-fifths option (C) is correct.

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