I WILL GIVE BRAINLY HELP ME PLSSS

-5x + 7 = -13

A. x = -4
B. x = -6/5
C. x = 6/5
D. x = 4

PLSSS SHOW YOUR WORK PLSS

To determine the product of 5 and 0.3 using the given number line, we can make jumps of 0.1 units, starting from 0 and moving to the right. By making 3 jumps of 0.1 units each to reach 0.3, and repeating this process 5 times, we end up at 1.5 on the number line. Therefore, the product of 5 and 0.3 using the number line is 1.5.

Start at 0 on the number line.

Each tick mark represents a tenth, so make jumps of 0.1 units to the right.

Make 3 jumps of 0.1 units each to reach 0.3.

Repeat this process 5 times since we want to find the product of 5 and 0.3.

After making 5 jumps of 0.3 units each, we end up at 1.5 on the number line.

Therefore, using the number line, we can determine that the product of 5 and 0.3 is 1.5.

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The five friends should pay $21.54 for the meal plus a 20% tip.

Your question seems incomplete; it might be:

Five friends plan to split a restaurant bill evenly. The cost of the meal is about $89.75, and they want to leave a 20% tip. What amount should each friend pay?

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The zero of a linear function is the point where the function crosses the x-axis, which means that the y-value is equal to 0.

The best estimate for the zero of the linear function represented in the table can be determined by examining the x and y values.

Considering the given options:
A) Between 0 and 10
B) Between 2 and 33
C) Between 1 and 23
D) Between 3 and 44

You can find the best estimate for the zero by analyzing the table and locating the interval where the y-value changes from positive to negative or vice versa. This means that somewhere within that interval, the y-value would equal 0, making that interval the best estimate for the zero of the linear function.

Remember to always look for the interval in which the y-value crosses the x-axis, and that will help you determine the best estimate for the zero of the linear function.

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An alpha particle with a charge of +2e and a mass of 6.64 × 10^-27 kg enters an electric field of 1.2 × 10^3 N/C. The alpha particle is accelerated from rest through a distance of 3.7 cm.

Find the speed of the alpha particle when it emerges from the electric field and the time taken to travel the distance.   More than 100 words.Electric fields accelerate charged particles. Alpha particles have a charge of +2e and a mass of 6.64 × 10^-27 kg, where e is the fundamental unit of charge.

The electric field that is responsible for the acceleration of the alpha particle can be calculated as follows:F = EqWhere F is the electric force, E is the electric field, and q is the charge of the particle.

The electric field can, therefore, be calculated as:E = F/qE = (2 × 1.6 × 10^-19) / (6.64 × 10^-27)E = 1.2 × 10^3 N/CThe alpha particle is accelerated from rest, meaning that its initial velocity is zero.  

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If there are 100 cows in this dairy, it requires a total of 32000 L of water daily to operate the dairy. According to the U.S. Department of Agriculture, the average dairy cow can consume up to 200 L of water daily.

An additional 120 L per cow per day is required to wash the milking equipment and milking area. So, in total, a single cow requires 320 L of water per day. For instance, suppose there are 100 cows in this dairy.

To determine the total quantity of water required for the day, multiply the amount of water needed per cow by the number of cows:100 cows × 320 L/cow = 32000 L

Therefore, if there are 100 cows in this dairy, it requires a total of 32000 L of water daily to operate the dairy.

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Answer:

45 minutes

Step-by-step explanation:

We want to know how long it takes to an airplane to fly a distance of 375 miles, if the speed of the airplane is 500 miles per hour.

For this, we should divide the distance/speed to get the time that the plane needs.

T = 375mi/(500mi/h) = 0.75 hours

The plane needs 0.75 hours or 0.75*60 = 45 minutes to fly that distance.

20/21 is the probability that the sample has at least one female.

The total number of students in the club is 4 + 5 = 9.

The sample size is 3. Therefore, the number of ways to choose 3 students out of 9 is: C(9,3) = 84.

There are 5 female students. Therefore, the number of ways to choose 3 students from 5 female students is: C(5,3) = 10.

The probability of selecting at least one female is equal to 1 minus the probability of selecting all male members. The probability of selecting all male members is the number of ways to choose 3 members out of 4 male students divided by the total number of ways to choose 3 members from 9. Therefore, the probability of selecting all male members is: C(4,3) / C(9,3) = 4/84 = 1/21.

So, the probability of selecting at least one female is: P(at least one female) = 1 - P(all male members) = 1 - 1/21 = 20/21.

Therefore, the probability that the sample has at least one female is 20/21.

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Sarah's percentage error is 35%.

The predicted value is 80 words per minute, and the actual value is 52 words per minute.

To find the percentage error, we need to find the difference between the predicted and actual values, divide it by the predicted value, and then multiply by 100 to get the percentage.

Sarah's percentage error can be calculated as follows:

percentage error = |(predicted value - actual value) / actual value| x 100%

Substituting the given values, we get:

percentage error = |(80 - 52) / 80| x 100%

percentage error = |28 / 80| x 100%

percentage error = 0.35 x 100%

percentage error = 35%

Therefore, Sarah's percentage error is 35%.

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Answer:

a - b

Step-by-step explanation:

Assuming you mean:  \((a^\frac12-b^\frac12)(a^\frac12+b^\frac12)\)

Apply Difference of Two Squares formula \((a-b)(a+b)=a^2-b^2\):

\(\implies (a^\frac12-b^\frac12)(a^\frac12+b^\frac12)=(a^\frac12)^2-(b^\frac12)^2\)

Apply the exponent rule \((a^b)^c=a^{bc}\) :

\(\implies (a^\frac12)^2-(b^\frac12)^2=a^1-b^1=a-b\)

The units for da/dx are pounds per foot squared.

The units for da/dx would be pounds per foot squared. This is because da/dx represents the rate of change of the function a(x), which has units of pounds per foot, with respect to x, which has units of feet. When we take the derivative of a(x), we essential do division of the change in a(x) by the change in x.  

The change in a(x) has units of pounds, and the change in x has units of feet. Therefore, the units for da/dx are pounds per foot squared.

To further explain this, imagine that a(x) represents the weight of a beam that is x feet long. The units for a(x) would be pounds per foot, as it gives us the weight of the beam per unit of length. The derivative of a(x), or da/dx, would give us the rate at which the weight of the beam changes as we increase its length by one foot.

This rate of change would be in units of pounds per foot squared, as we are dividing the change in weight (pounds) by the change in length (feet squared).

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e) A perfect forecast of the demand would be worth the difference between the expected cost under perfect forecasting and the expected cost under the current demand probabilities.

f) To determine the location that would minimize the expected opportunity loss, we need to calculate the expected cost for each location under different demand scenarios and choose the one with the lowest expected cost.

g) The expected value of perfect information is the difference between the expected cost under perfect information and the expected cost under the current demand probabilities.

For a more detailed explanation, we start with part e. A perfect forecast of the demand would allow the company to accurately anticipate the demand level for each location. By using the demand probabilities and the corresponding costs for each location, the company can calculate the expected cost under perfect forecasting.

The value of this perfect forecast is the difference between the expected cost under perfect forecasting and the expected cost under the current demand probabilities.

Moving to part f, to minimize the expected opportunity loss, the company needs to choose the location with the lowest expected cost.

This involves calculating the expected cost for each location by multiplying the demand probabilities with the corresponding costs and summing them up. The location with the lowest expected cost would minimize the expected opportunity loss.

Lastly, part g involves calculating the expected value of perfect information.

This is done by comparing the expected cost under perfect information (where the company knows the exact demand level) to the expected cost under the current demand probabilities. The expected value of perfect information is the difference between these two costs.

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Answer:

usando un gráfico

Step-by-step explanation:

Debido a que el dominio se refiere al conjunto de posibles valores de entrada, el dominio de un gráfico consta de todos los valores de entrada que se muestran en el eje x.

By using the approximation of 62,500 inches to the mile, you can simplify and expedite various calculations involving distances and conversions between inches and miles, providing a convenient tool for numerical analysis and problem-solving

The approximation of 62,500 inches to the mile is commonly used in various calculations, especially in scenarios where conversions between inches and miles are involved. This approximation simplifies the conversion process and allows for easier calculations.

For example, if you need to convert a distance from miles to inches, you can simply multiply the number of miles by 62,500 to obtain the equivalent distance in inches. Conversely, if you have a measurement in inches and want to convert it to miles, you divide the number of inches by 62,500 to get the distance in miles.

Additionally, this approximation can be useful in other applications, such as determining the number of inches in a given number of miles, or calculating the length of a specific distance in miles based on its measurement in inches.

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.

If p > 5 is prime and p is divided by 10, then the remainders are 1, 3, 7, or 9

The given information, we know that p is a prime number greater than 5, and that p is divided by 10. This means that p must end in either 0 or 5. since those are the only digits that allow for a number to be divisible by 10.

However, we also know that p is prime, which means it cannot be divisible by any number other than 1 and itself. This rules out the possibility of p ending in 0. since any number ending in 0 is divisible by 10 (and therefore not prime).

Therefore, p must end in 5. This means that p can be written in the form:

p = 10n + 5

where n is some integer. Now, let's consider what happens when we divide p by 10:

p/10 = (10n + 5)/10 = n + 0.5

Since p/10 is not an integer (it has a decimal component of 0.5), we know that p cannot be evenly divided by 10. Therefore, when p is divided by 10, there must be a remainder.

To determine what possible remainders there could be, we can look at the possible values for the last digit of p. Since p ends in 5, the last digit can only be 1, 3, 7, or 9 (since these are the only digits that, when multiplied by 5 and added to 10n, result in a number ending in 5).

Therefore, if p > 5 is prime and p is divided by 10, the remainder must be either 1, 3, 7, or 9.

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Answer:

Explanation BELOW:

Step-by-step explanation:

To figure this out, do the following:

Take the X values and multiply them by 3, then add 2 to get your Y values.

EXAMPLE: X=3.

y=2+3x

y=3x3=9

y=9+2

y=11

The slope-intercept equation for the given line is y = 2x + 3

From the question, we are to determine the equation for the line

The slope-intercept form of the equation of a straight line is

y = mx + b

Where m is the slope

and b is the y-intercept

First, we will determine the slope

Slope of the line = (3 - 0) / (1.5 - 0)

Slope of the line = 3/1.5

Slope of the line = 2

∴ m = 2

On the graph, we can observe that the y-intercept is 3

∴ b = 3

Thus,

The equation becomes

y = 2x + 3

Hence, the slope-intercept equation for the given line is y = 2x + 3

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Answer:

for the box n=40, the answer is 80 = 2 x n

for the box n=10, the answer is 8 x n = 80

for the box n = 8, the answer is n x 2 = 16 and 40 = n x 5

Step-by-step explanation:

for the box with 40, 2x40=80

for the box with 10, 10x8=80

for the last box, 2x8=16 and 5x8=40

和和和和 和 和和和和和  和  呵呵

我做的很难

但是不是很难

Answer:

y = 1

x = 4

Step-by-step explanation:

x + 3y = 7 → ( 1 )

2x - y = 7 → ( 2 )

First, let us make x the subject in equation ( 1 ).

x = 7 - 3y  → ( 3 )

Let us find the value of y.

For that let us take equation (1) & replace x with ( 7 - 3y ).

2x - y = 7

2 ( 7 - 3y ) - y = 7

Solve the brackets.

14 - 6y - y = 7

Combine like terms.

14 - 7y = 7

Subtract 14 from both sides.

-7y = 7 - 14

-7y = -7

Divide both sides by -7.

y = 1

Let us find value of x

For that let us take equation (3) & replace y with 1.

x = 7 - 3y

x = 7 - 3 × 1

x = 7 - 3

x = 4

Step 1. The expression that we have is:

And we need to solve for v.

Step 2. To solve this problem we use the following rule for absolute value expressions:

In our case:

Step 3. The final step to solve is to subtract 4 to all parts of the expression:

Answer:

Using the combination formula, it is found that there are 99768240 ways in which they can travel.

The passenger seat positions are not important, which means that the order is not important, which is why the combination formula is used.

Combination formula:

\(C_{n,x}\) is the number of different combinations of x objects from a set of n elements, given by:

\(C_{n,x} = \frac{n!}{x!(n-x)!}\)

In this problem:

The, the number of ways is given by:

\(N = C_{20,7}C_{13,5}C_{8,8}\)

\(N = \frac{20!}{7!13!} \times \frac{13!}{5!8!} \times \frac{8!}{0!8!} = 99768240\)

There are 99768240 ways in which they can travel.

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On solving the provided question we can say that  to find quotient, divide

\(6x-3/5x^2 + 5/x\\\), quotient = 6x-3 / 25x

One of the four fundamental operations in mathematics, division is the process of merging two integers to produce a new number. Addition, subtraction, and multiplication are additional operations. The opposite of multiplication is division. When you multiply three groups of four by twelve, you get four in each group when you split twelve into its three equal parts. The basic goal of sharing is to determine how many equal groups are formed when sharing fairly, or how many individuals belong to each group. To divide is to separate into two or more equally sized areas, classes, categories, groups, or subdivisions.

to find quotient, divide

\(6x-3/5x^2 + 5/x\\\)

quotient = 6x-3 / 25x

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'S' is the incenter, so Angle Bisectors type of segments are drawn.

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Answer:

If 5 is added to the square of a positive number,the sum is 69.find the number.

pls mark me as a brainalist pls

Answer:

c. (6, 0)

Step-by-step explanation:

First, add y on both sides of the first equation, so it's easier to solve:

-x+y = 6

x+2y = 12

Then, add the 2 equations:

3y = 18

y = 6

Since c is the only one with a 6, we can deduce that the answer is c.

We can further check by plugging y back into the first equation:

-x+6 = 6

-x = 0

x = 0

This confirms that the answer is c.

I hope this helped.

Answer:

2880

Step-by-step explanation:

10 x 8 x 6 x 12 = 5760/2 = 2880

With this query, no effort is necessary. measure the tbsp. of all items.

A great source of both phosphorus and calcium, which are essential for the growth and upkeep of strong, strong teeth and bones, is milk. They lower the chance of developing osteoporosis and suffering broken bones later in life. Milk encourages strong bones.

1. Measure \(8\) tbsp. chocolate sauce and add \(2\frac{1}{2}\) cups of milk.

No work is required for this question. It is a simple instruction to measure out 8 tbsp. of chocolate sauce and add it to \(2\frac{1}{2}\) cups of milk.

2. Start with \(1\frac{3}{4}\) cups of milk and add \(2\frac{1}{2}\) tbsp. chocolate sauce.

No work is required for this question. It is a simple instruction to start with \(1\frac{3}{4}\) cups of milk and add \(2\frac{1}{2}\) tbsp. of chocolate sauce.

3. Add \(3\frac{1}{3}\) tbsp. chocolate sauce to \(1\frac{1}{4}\) cups milk.

No work is required for this question. It is a simple instruction to add  \(3\frac{1}{3}\)tbsp. of chocolate sauce to \(1\frac{1}{4}\) cups of milk.

4. For every 1 cup of milk add \(2\frac{1}{2}\) tbsp. of chocolate sauce.

No work is required for this question. It is a simple instruction to add \(2\frac{1}{2}\) tbsp. of chocolate sauce for every \(1\) cup of milk.

5. Stir \(1\) tbsp. chocolate sauce into \(\frac{2}{3}\) cup milk.

No work is required for this question. It is a simple instruction to stir 1 tbsp. of chocolate sauce into \(\frac{2}{3}\) cup of milk.

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Answer:

witch one is the selection

Answer:

We can assume angles 102° and angles 0 and 42° are alternate interior angles.

So, to solve for 0, we must add this unknown angle to 42° and make it equal to 102°;

Let's make '0', x(our variable we solve for)

x + 42 = 102

-42         -42

x = 60

There are 360 black counters and 306 white counter in 20:17 ratio.

Let's denote the number of black counters by B and the number of white counters by W. We know that the ratio of black to white counters is 20:17, which means that:

B/W = 20/17

We also know that there are 54 more black counters than white counters, which means that:

B = W + 54

We can use substitution to solve for B. Substituting the second equation into the first equation, we get:

(W + 54)/W = 20/17

Cross-multiplying, we get:

17(W + 54) = 20W

Expanding the left side, we get:

17W + 918 = 20W

Subtracting 17W from both sides, we get:

918 = 3W

Dividing both sides by 3, we get:

W = 306

Now we can use the second equation to find B:

B = W + 54 = 306 + 54 = 360

Therefore, there are 360 black counters in the bag.

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