I need help on this pls​

Answer:

0.4%

Step-by-step explanation:

Given that:

Number of people with mild allergic reaction = 28

Total number of people = 7000

To find:

Percentage of people who have a mild allergic reaction to the shampoo = ?

Solution:

First of all, let us understand how can we calculate percentage of a particular amount.

Percentage of a particular amount can be calculated by dividing the amount with the total amount and then multiplying it with 100.

Percentage of \(p\) from \(q = \frac{p}q\times 100\)

Here,

\(p = 28\\q =7000\)

Therefore, the percentage of people who have mild allergic reaction:

\(\dfrac{28}{7000}\times 100\\\Rightarrow \dfrac{2800}{7000} \\\Rightarrow 0.4\%\)

Answer: 52 , 36 , 28

I goygot these numbers by following the rule . Each time you divide by 2 so u get the half and then add 10 . I see the numbers are even and they are decreasing so they are getting smaller . Hope it helps

Answer:

C

Step-by-step explanation:

Answer:

a=0.7

A Area

0.49

Using the formula

A=a2

Solving fora

a=A=0.49=0.7

It's 28.

So first, you need to calculate the rate of change, or slope, for each of the equations. You also need to put each of them into equation form, using the y=mx+b formula, but you can't do that without knowing the slope, or rate of change. Please note, the rate of change in this answer will be referred to as slope and the initial value will be referred to as y-intercept.

For the first one, the equation is already written for you. The slope in the equation  is 5/2, or 2.5 in decimal form.

For the second one, we start at knowing 0=1, so the y intercept is 1. So then we see that 1=3/2, or 1.5 in decimal form. So, we just find the difference between 1 and 1.5, which is 0.5. We can now write our equation, y=0.5x+1.

The third one is the hardest one to calculate. We see the initial value, or the y intercept is 2. So far we have y=mx+2. Now, we have to figure out the slope, or rate of change. So, we see that 0=2. Now, let's look at another point in the graph. We'll do 2,5 since it is a clear point. So, here, the y value is 5. Let's subtract 5-2, and we get 3. However, we are not done. Because we chose a clear point in the graph to compare, we jumped 2 x spaces ahead, not one. So, now we divide by 2 to equal that out. So, 5/2=1.5. The slope is 1.5. Now, we have our equation, y=1.5x+2.

Now, we just compare our slopes, or rate of change to each other to find the greatest. We have 2.5, 0.5 and 1.5. 2.5 is the greatest. That was the first one. Now, it is asking us what the y value would be if x equals 10. So, we can just plug in 10 where x is in the equation. So, y=10x2.5+3. 10x2.5=25 and then plus 3 is 28. So, that is your answer.

I hope this helps you answer the problem.

Answer: it is 5/16

Step-by-step explanation: Because you dive by 2

Answer:

a. greater than 180⁰

Step-by-step explanation:

you know its greater than 180⁰ because the angle is more than 90⁰ since it does not have a right angle (the box)

Answer:

c

Step-by-step explanation:

if there is a decimal in the equation then it is always going to end up a decimal

Answer:

Hi there!

Your answer is:

Based off the equation we know that the slope is 1 and the y intercept is 6. We know that slope is rise/run so it goes UP one unit for every unit it goes RIGHT! We must start at the point (0,6) because that is the y intercept

Explanation:

Associative properties for multiplication is stated as follows:

(a * b) * c =

A pyramid with a square base has a volume of 42.67 cubic meters.

A perimeter is a closed route that covers, surrounds, or outlines a two-dimensional form or length. The circumference of a circle or an ellipse is its perimeter. There are various practical applications for calculating the perimeter. The perimeter of a shape is the distance around its edge. A shape's perimeter is always computed by summing the lengths of each of its sides. The perimeter of a thing is the distance surrounding it. Your house, for example, has a fenced-in yard. The perimeter of the barrier is its length.

Here,

perimeter=12.8 m

side=12.8/4

=3.2 m

volume=1/3*3.2²*12.5

=1/3*128

=42.67 m³

The volume of a pyramid with a square base is 42.67 m³.

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Answer:

x/2  - 8x + 15

Step-by-step explanation:

Expand the polynomial using the foil method

Answer:

Step-by-step explanation:

Its the 3rd one

Answer:

c 15.9 m

Step-by-step explanation:

you are welcome

Answer:

3x+2x=95

5x=95

X=19

Step-by-step explanation:

it may help you to understand

The probability that the sample proportion will be greater than 0.78 is:

78% of 400 is 0.78× 400 = 312.

So this probability is 1 subtracted by the p value of Z when x = 312

Z = (X - μ)/σ

We are going to approximate the binomial distribution to the normal.

Binomial probability distribution-

Probability of exactly x sucesses on n repeated trials, with p probability.

Can be approximated to a normal distribution, using the expected value and the standard deviation.

The expected value of the binomial distribution is:

E(X) = np

The standard deviation of the binomial distribution is:

√V(X) = √np(1 - p)

Normal probability distribution-

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean and standard deviation o, the zscore of a measure X is given by:

Z = (X-μ)/σ

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z- score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

When we are approximating a binomial distribution to a normal one, we have that-

μ = E (X), σ = √V√(X).

In this problem, we have that:

n=400, p=0.8

So = E(X)=np=400-0.8=320

σ = √V(X) = √np(1-p)=√400×√0.8×√0.2=8

Hence, the probability that the sample proportion will be greater than 0.78 is:

78% of 400 is 0.78× 400 = 312.

So this probability is 1 subtracted by the p value of Z when x = 312

Z = (X - μ)/σ

Z = (312- 320)/8.

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Angles Formulas at the center of a circle can be expressed as:

Central angle, θ = (Arc length × 360º)/(2πr) degrees

Sum of Interior angles=180°(n-2)

The angles formulas are used to find the measures of the angles. An angle is formed by two intersecting rays, called the arms of the angle, sharing a common endpoint.

The corner point of the angle is known as the vertex of the angle. The angle is defined as the measure of the turn between the two lines.

There are various types of formulas for finding an angle; some of them are the central angle formula, double-angle formula, etc...

We use the central angle formula to determine the angle of a segment made in a circle.

We use the sum of the interior angles formula to determine the missing angle in a polygon.

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Answer: y- 12

Step-by-step explanation:

12 is less than y so is like 12 being subtracted from y.

Answer/Step-by-step explanation:

The following inequalities can be translated and matched as follows:

1. A number is larger than 5:

Let that number be x. Numbers that are larger than 5 are 6, 7, 8 and so on. Therefore, the number that is larger is greater than 5. This can be represented in the symbolic form as:

x > 5

2. A number is below 5:

Numbers that are below 5 are 4, 3, 2 and so on. Therefore, we can say the number, x, is less than 5. This can be written in symbolic form as:

x < 5

3. A number is not less than 5:

A number that is not less than 5 could equal 5 or any other number that is larger than 5. Therefore, we can say the number, x, equals 5 or greater than 5. This can be written as:

x ≥ 5

4. A number is at most 5:

At most 5, means the number, x, is either 5 or less than 5. This can be written as:

x ≤ 5

just copy off of the picture :)

We can make 37 , 3-letter strings  from the letters a, b, c, and d.

1 . AAA    - This word could be written in 1 way.

2. AAB, AAC, AAD  

3.ABB, ACC, ADD

4. ABC, ABD, ACD      

Total = 1+9+9+18

        = 37

So, we can make 37  3-letter strings  from the letters a, b, c, and d by applying the method called permutation.

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Answer:

The other factor is 4x-3

Step-by-step explanation:

We want to divide 4x^2 + 5x -6 by x + 2

Unfortunately, we cannot say if x + 2 is a factor or not.

To know if it’s,

we set x + 2 = 0 and this means x = -2

We substitute this into the larger polynomial.

This gives;

4(-2)^2 + 5(-2) -6 = 16 -10-6 = 0

What this actually means is that it is a factor of it since it leaves no remainder.

The issue now is finding this other factor.

So let’s use the long division

(x + 2). _| 4x ^2 + 5x -6

Kindly note that 4x^2/x = 4x, we now multiply this by (x+2) so we get 4x(x+2) = 4x^2 + 8x which we will subtract from 4x^2 + 5x -6

_ 4x_

(x+2). ___|4x^2 + 5x -6

-(4x^2 + 8x)

-3x -6

next is -3x/x = -3

_-4x-3_

(x+2). _| 4x^2 + 5x-6

-(4x^2 +8x)

__________

-3x-6

-(-3x-6)

_________

0

So the other factor is 4x-3

Answer:

I think it's D

Step-by-step explanation:

I think it's D bc (3, 3) are the same and parallel lines are the same

____

____

-this is an example of parallel lines

Hope this helps

⇒Option A is an expression of a difference 7 and 5x which is the product of 5 and x.

⇒Option A is the  answer.

Answer:

Explanation:

There are two possible answers for a tue-false test:

True and False

It is given

Answer:

\({ \bf{this \: is \: a \: set \: of \: combination : }} \\ \\ = { \tt{ {}^{25} {C} _{7}}} \\ = { \tt{480,700}}\)

Answer:   {(x + 2), (x - 1), (x - 3)}

Step-by-step explanation:

Presented symbolically, we have:

x^3 - 2x^2 - 5x + 6

Synthetic division is very useful for determining roots of polynomials.  Once we have roots, we can easily write the corresponding factors.  

Write out possible factors of 6:  {±1, ±2, ±3, ±6}

Let's determine whether or not -2 is a root.  Set up synthetic division as follows:

-2   /   1   -2   -5   6

              -2     8   -6

     -----------------------

        1     -4      3    0

since the remainder is zero, we know for sure that -2 is a root and (x + 2) is a factor of the given polynomial.  The coefficients of the product of the remaining two factors are {1, -4, 3}.  This trinomial factors easily into {(x -1), (x - 3)}.

Thus, the three factors of the given polynomial are {(x + 2), (x - 1), (x - 3)}

Answer:

\(x^{2} + y^{2} = 36\)

Step-by-step explanation:

The form of the equation for a circle is \((x-h)^{2} + (y-k)^{2} = r^{2}\), where \((h, k)\) is the center and \(r\) is the radius. Here, (h, k) is (0,0) and r is 6, so the equation would just be \(x^{2} + y^{2} = 36\).

Answer:

x² + y² = 36 (top right answer)

Formula for the circle:

(x - h)² + (y - k)² = r²

h = X center point  

k = Y center point

The median value is the 11th score which is 84%.Changing 49% to 69% will increase the mean but the median will not change.

The three measures of central tendency used in statistics are mean, median, and mode. While describing a set of data, we always specify the focal point of any data set. The measure of central tendency is this. Every day, data are presented to us. We discover them in books, articles, bank statements, phone and utility bills, as well as in newspapers. There are so many; they are all around us. The challenge now is if we can identify some key characteristics of the data by focusing on only a few data points. The means, medians, and modes—measures of central tendency or averages—can be used to do this. When describing a set of data, a measure of central tendency locates the set's center.

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Answer:

IT WAS NOT D!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Step-by-step explanation:

Answer:

k=-2

Step-by-step explanation:

11k - 16 - 2k = 17k

11k- 2k -17k=16

-8k=16

k=16/-8

k=-2

hope it helps u

Answer:

k = -2

Step-by-step explanation:

11k - 16 - 2k = 17k

9k − 16  =  17 k

− 8k − 16 = 0

− 8k = 16

k  = −2

Answer:

2

Step-by-step explanation:

Un círculo unitario es un círculo con un radio de 1