Can someone please help will give brainliest

Answer:

A) f'(x) = 0.3((x-1)²+1)

Step-by-step explanation:

Answer:

For this question, you can use the simultaneous equation to solve this problem.

Equation 1 reads: x + y = 34. (There are 34 notes in total.)

Equation 2: 5x + 10y = 235 (The notes are worth a total of $235.)

To find x in terms of y, we can apply equation 1:

x = 34 - y

When we use this expression to replace x in equation 2, we obtain:

5(34 - y) + 10y = 235

By condensing and figuring out y, we get at:

y = 15

There are 15 $10 bills in the wallet as a result.

If the probability of picking a red marble out of the total 63 is 8/9, then it's reasonable to think that 8/9 of the total number of marbles must be red. So there are likely 8/9 × 63 = 56 red marbles in the bag.

Answer:

si

Step-by-step explanation:

si

Answer:

a) 35/75

b)25/75

c)10/75

Step-by-step explanation:

Answer:

x^3+2x^2-15x

Step-by-step explanation:

Ohk there various methods and steps which can be followed,but let's simplify

In the first method,

Lets put off the brackets hence we will multiply,simplify the equations in the brackets,which would be as followed:

x(x-3)(x+5)

Let's Start with solving the bracket equation,which would be-

(x-3)(x+5)=x(x+5)-3(x+5)=x^2+5x-3x-15

=x^2+2x-15

While multiplying the above equation we got with `x',we get:

x(x^2+2x-15)=x^3+2x^2-15x(Hence solved)

Or/otherway/otherwise:

x(x-3)(x+5)=[x(x-3)](x+5)=(x^2-3x)(x+5)

=x^2(x+5)-3x(x+5)=x^3+5x^2-3x^2-15x

=x^3+2x^2-15x(Solved)

Answer:

Step-by-step explanation:

The angle of depression is the downward angle the air traffic controller

looks down from in the tower.  It also equals the angle of elevation which is the angle formed by the runway and the line of sight.

With this information you can find the remaining angle:

180 - (90 + 18)

180 - 108 = 72

Let Angle B = 72°

Angle A = 18°

Angle C =90°

We have one side - 140 feet - this is side a - it is across from angle A.

There is a right triangle formed by the runway (side b) the tower, side a, and the line of sight (side c)

Using the law of sines:

sin A/a = sinB/b

sin 18°/a = sin72°/b

.3090/140 = .9510/x

cross multiply and then divide

140 × .9510/.3090

133.14/.3090

430.873 ft

round to a tenth = 430.9 ft

Answer:

36 cm

Step-by-step explanation:

Because the plant is growing the same amount each week you would take 12(3) and get 36 cm at the end of the 12 weeks.

The probability that the donor has type AB blood is P ( AB ) = 7 %

The probability that the donor has type A or B blood is P ( A or B ) = 60 %

The probability that the donor is not type O = 57 %

The probability that an event will occur is measured by the ratio of favorable examples to the total number of situations possible

Probability = number of desirable outcomes / total number of possible outcomes

The value of probability lies between 0 and 1

Given data ,

Let the percentage of donors that have Type O blood = 43 %

Let the percentage of donors that have Type A blood = 38 %

Let the percentage of donors that have Type B blood = 12 %

Let the percentage of donors that have Type AB blood = 7 %

Now , the probability is

The probability that the donor has type AB blood is P ( AB ) = 7 %

The probability that the donor has type A or B blood is P ( A or B ) = percentage of donors that have Type A blood + percentage of donors that have Type B blood

On simplifying , we get

The probability that the donor has type A or B blood is P ( A or B ) = 60 %

And , The probability that the donor is not type O = 1 - percentage of donors that have Type O blood

The probability that the donor is not type O = 57 %

Hence , the probabilities are solved

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The complete question is :

The American Red Cross says that about 43% of the U.S. population has Type O blood, 38% Type A, 12% Type B, and the rest Type AB

Find the probability that the donor has type AB blood

Find the probability that the donor has type A or type B blood

Find the probability that the donor is not Type O blood

Answer:

Percentage of students who tried both questions = \(8\%\)

Percentage of students who tried at least one question = \(96\%\)

Step-by-step explanation:

Given: 25 students take a midterm psychology exam, 15 answered the first of two bonus questions, 11 answered the second bonus question, and 1 didn't bother with either one.

To find: percentage of students who tried both questions and percentage of students who tried at least one question

Solution:

Let A denotes students who answered the first of two bonus questions and B denotes students who answered the second bonus question.

Let U denotes the universal set denoting students who take a midterm psychology exam.

\(n(A)=15\,,\,n(B)=11\,,\,n(U)=25\)

\(n\left ( A'\cap B' \right )=1\)

\(n\left ( A'\cap B' \right )=n\left ( A\cup B \right )'\\=n(U)-n\left ( A\cup B \right )\\\Rightarrow 1=25-n\left ( A\cup B \right )\\n\left ( A\cup B \right )=25-1=24\)

\(n\left ( A\cup B \right )=n(A)+n(B)-n\left ( A\cap B \right )\\24=15+11-n\left ( A\cap B \right )\\n\left ( A\cap B \right )=15+11-24=2\)

Percentage of students who tried both questions = \(\frac{2}{25}\times 100=8\%\)

Percentage of students who tried at least one question = \(\frac{24}{25}\times 100=96\%\)

Step-by-step explanation:

This is of the form

(x-h)^2 + ( y-k)^2 = r^2        so r^2 = 16  means r = 4   units

Answer:

a) 263,158

b) $164,500

c) Ethical issues companies face when deciding to move operations: job loss for employees, poor working conditions and exploitation of workers, negative environmental impact,...

Step-by-step explanation:

a)

Total cost = (0.25 + 0.02 + 0.03 + 0.15) x + 250,000

Total revenue = 1.40x

Setting the two equations equal to each other and solving for x, we get:

(0.45)x + 250,000 = 1.40x

0.95x = 250,000

x ≈ 263,158

b)

If the company sells 270,000 candy bars at $1.40 each, the total revenue generated is:

270,000 * $1.40 = $378,000

The total cost of producing 270,000 candy bars is:

(0.25 + 0.02 + 0.03 + 0.15) * 270,000 + $250,000 = $213,500

Therefore, the company's profit is:

$378,000 - $213,500 = $164,500

c)

Ethical issues companies face when presented with the decision to move operations: job loss for employees, poor working conditions and exploitation of workers, negative environmental impact,...

Answer:

hope it helps, twanks you (owo)

Step-by-step explanation:

Solving for X in a Right Triangle

Subtract the sum of the two angles from 180 degrees. The sum of all the angles of a triangle always equals 180 degrees. Write down the difference you found when subtracting the sum of the two angles from 180 degrees. This is the value of X

Answer:

x = -3

Step-by-step explanation:

There are a total of 3 forwards on the team.

A fraction represents a part of the whole or group of objects.In a fraction, numerator and denominator are separated by a horizontal bar known as the fractional bar

Given:

2/8 of the players are forwards.

Total number of players on the team = 12

We will determine the total number of forwards on the team by multiplying the total number of players by the fraction representing the forwards.

Fraction representing the forwards:

= 2/8

= 1/4

Total forwards on the team:

= 12 * (1/4)

= 3.

Translated question:

Of the 12 players on the team, 2/8 are forwards. What are the total forward in the team?

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1. Initial prediction for the data set with smaller Mean Absolute Deviation was Period A. Prediction was wrong.

2. The Mean Absolute Deviation for Period A is 1.8 and Period B, 1.1

This means that period B has a smaller Mean absolute deviation.

We start by finding the mean for each set;

Period A: Mean = (1×92 + 1×94 + 3×95 + 1×96 + 2×97 + 1×99 + 1×100)/10

= 960/10

= 96

Period B: Mean = (1×94 + 3×95 + 1×96 + 4×97 + 1×98)/10

= 961/10

= 96.1

Period A:

Mean Absolute Deviation = ((92-96) + (94-96) + 3(95-96) + (96-96) + 2(97-96) + (99-96) + (100-96))/10

Mean Absolute Deviation = (4 + 2 + 3 + 0 + 2 + 3 + 4)/10

Mean Absolute Deviation = 1.8

Period B:

Mean Absolute Deviation = ((94-96.1) + 3(95-96.1) + (96-96.1) + 4(97-96.1) + (98-96.1))/10

Mean Absolute Deviation = (2.1 + 3.3 + 0.1 + 3.6 + 1.9)/10

Mean Absolute Deviation = 1.1

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Answer:

I think it is 42 i hope u get it right

Answer:

I don't see the graph, but try finding the perimeter count all the sides

Step-by-step explanation:

There you go

PLEASE MARK IT AS A BRILLIANT ANSWER

The value of 'n' is 18 in the given equation 8n - 5 = 139.

We have to find the value of 'n'.

To do so, we need to solve the given equation.

Let us see how we can solve the given equation.8n - 5 = 139

We need to find the value of 'n'.

Let us bring the constant term to the right side by adding 5 to both the sides of the equation.8n - 5 + 5 = 139 + 5On simplifying, we get8n = 144Now, we need to isolate 'n' to find its value.

To do so, we divide both the sides by 8.8n/8 = 144/8On simplifying, we get n = 18

Therefore, the value of 'n' is 18.

Hence, the value of 'n' is 18 in the given equation 8n - 5 = 139.

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Answer:

(7, 24, 25 ) and (11, 60, 61 )

Step-by-step explanation:

To obtain the Pythagorean triplets for a given value n

n , \(\frac{n^2-1}{2}\) , \(\frac{n^2+1}{2}\)

(a) for n = 7 , then

\(\frac{7^2-1}{2}\) = \(\frac{48}{2}\) = 24 , \(\frac{7^2+1}{2}\) = \(\frac{50}{2}\) = 25

Triplet = (7, 24, 25 )

(b) for n = 11

\(\frac{11^2-1}{2}\) = \(\frac{120}{2}\) = 60 , \(\frac{11^2+1}{2}\) = \(\frac{122}{2}\) = 61

Triplet = (11, 60, 61 )

The length of WZ is 7.5 inches and the measurement of angle Y is 45 degrees for the similar shapes QRST and WXYZ.

Similar shapes are two or more shapes that have the same shape, but different sizes. In other words, they have the same angles, but their sides are proportional to each other. When two shapes are similar, one can be obtained from the other by uniformly scaling (enlarging or reducing) the shape.

If Lynn's quadrilateral WXYZ is a smaller shape of QRST, and they are similar, then:

the side QR corresponds to WX and QR corresponds to WX, so:

QR/WX = QT/WZ

2/5 = 3/WZ

WZ = (3 × 5)/2 {cross multiplication}

WZ = 15/2

WZ = 7.5

The angle RST corresponds to XYZ, so:

angle S = angle Y = 45°

Therefore, length of WZ is 7.5 inches and the measurement of angle Y is 45 degrees for the similar shapes QRST and WXYZ.

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Answer:

A. T > 2.539

Step-by-step explanation:

We have a hypothesis test of the mean, with unknown population standard deviation.

The hypothesis are:

\(H_0: \mu = 2.1 \\\\H_a: \mu > 2.1\)

From the hypothesis we can see that the test is right-tailed, so the critical value of t should be a positive value.

The degrees of freedom can be calculated as:

\(df=n-1=20-1=19\)

The significance level is 0.01, so the critical value tc should be the one that satisfies:

\(P(t>t_c)=0.01\)

Looking up in a t-table, for 19 degrees of freedom, this critical value is tc=2.539.

Answer:

The scale of the drawing to become the statue is 7, and likewise for the statue to become the drawing it is 1/7.

Drawing * Scale = Statue

Take the first dimension:

9 * scale = 63

63/9 = scale

scale = 7

Answer:

7

Step-by-step explanation:

The scale factor is the ratio between the actual size and the model size.

Here, they are termed as "statue" and "drawing" respectively.

Finding scale factor :

The position of the √7 on the number line is slightly right of the 2.6.

What is a number line?

A number line is defined as the number marked on the line calibrated into an equal number of units. For example -1, 0, 1, and so on.

Here,

In general conclusion,

√4< √7 < √9

2 < √7 < 3

So, the value of the √6 lies between 2 and 3.

√6 = 2.6457

Hence, the position of the √7 on the number line is slightly right of the 2.6.

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The Lim household used 225 kWh of electricity in that month. The solution has been obtained by using the arithmetic operations.

What are arithmetic operations?

All real numbers are thought to be adequately described by the four basic operations, often known as "arithmetic operations." The mathematical operations quotient, product, sum, and difference come after division, multiplication, addition, and subtraction.

We are given that the Lim household paid $45 for electricity usage in a certain month and each electricity (in kWh) is charged at $0.20​.

Let the electricity used be x.

So, we get an equation as

⇒ 0.20x = $45

Using the division operation, we get

⇒ x = 225 kWh

Hence, the Lim household used 225 kWh of electricity in that month.

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