Can you please help me solve this #2

Answer: i dont kno man

Step-by-step explanation:

From the explanations, we can say that for the research experiment;

A Her results were not typical. She should have called on females fewer than 10 times since most of the data is centered around 10.

Since the teacher is conduction the experiment to see if she  was more likely to call on boys or girls in class, it means that there may have been some bias in the research.

The reason for the purposed bias comes from the  she is also a female. However,  it is not only just about genders only but which student was closer and as such if the teacher is female it’s more likely for a female student to be closer to her eye view whereas the boys may be in the back as usual and so 23 shows a typical expectation.

Now, looking at the options, we can say that the correct one is certainly.

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Answer:

it is easy 56 and 45 and 567

the cost of 145 refrigerators is $16954.82 and fixed cost rate per refrigerator is $116.92

What is the arithmetic operation?

The four fundamental operations of arithmetic are addition, subtraction, multiplication, and division of two or more quantities. Included in them is the study of numbers, especially the order of operations, which is important for all other areas of mathematics, including algebra, data management, and geometry. The rules of arithmetic operations are required in order to answer the problem.

A company manufactures small refrigerators. The total cost to manufacture 57 refrigerators is $6665.

manufacture 1 refrigerator is $6665/57 = $116.92

So to make 145 refrigerators the money will spent is $116.92*145= $16954.82

The fixed cost arte per refrigerator is $116.92

Hencve the cost of 145 refrigerators is $16954.82 and the fixed cost rate per refrigerator is $116.92

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Answer: C

Step-by-step explanation:

Compound interest equation:

Find equations for each case below.

1) P = 1200, r = 0.09, n = 1, t = 15

2) P = 1200, r = 0.12, n = 4, t = 15

3) P = 1200, r = 0.12, n = 12, t = 15

4) P = 1200, r = 0.15, n = 2, t = 9

Answer:

7.065

Step-by-step explanation:

So, to find the area of a circle you need to use "A =  π r2"

First, we have to find out the radius of the circle, so cut the diameter in half, that will equal 1.5 ft

then, you put 3.14 (pi) into a calculator

then put (1.5 x 1.5) which is 1.5 to the second power.

the equation put together will be 3.14 (1.5 x 1.5)

So the answer will be 7.065

The selling price of a used book at the store where the owner buys a used book for $1.50 and resells the used book at a price of 400% the price at which he buys the used book is $6.00

The selling price of an item is the price which is displayed on the item on the shelves of a store. The selling price is often different from the price at which the item is bought, or produced, which is often lesser than the price at which the item is sold.

The amount at which the owner buys each used books = $1.50

The amount at which the owner of the used book store sells the books = 400% of the amount he paid for the books

400% of an amount x is equivalent four times the amount. (4 × x)

The price at which the owner sells a used book at his store, P, is therefore;

P = 400% × $1.50 = 400/100 × $1.50 = $6.00

The price of a used book at the store is $6.0

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The sale price of the shirt can be found by calculating 30% of the original price, which in this case would be $22.40 x 0.30 = $6.72. Thus, the sale price of the shirt would be $22.40 - $6.72 = $15.68.

Answer:

Step-by-step explanation:

I'd say c.) table b only. Because it's a straight line which I think is positive but i'm not sure about the association between the variables part. If wrong I'm sorry.

Answer:

Below

Step-by-step explanation:

If they are similar the ratios of their sides are similar

11 is similar to 43    as   8 is similar to OP

Set up a ratio of this statement:

11/43  =  8/OP      then OP = 8 * 43/11 = 31.3 units  

The total carbon dioxide that the country would emit over the course of the 6 year period is 661,505 kilotons.

The formula that can be used to determine the emission each year is:

Emission in the first year x(1 - rate of decrease)^number of years

Emission in the first year = 120,000

Emission in the second year = 120,000 x (1 - 0.034)^1 = 115,920

Emission in the third year = 120,000 x (1 - 0.034)^2 = 111,978.72

Emission in the fourth year = 120,000 x (1 - 0.034)^3 = 108,171.44

Emission in the fifth year = 120,000 x (1 - 0.034)^4 = 104,493.61

Emission in the sixth year = 120,000 x (1 - 0.034)^5 = 100,940.83

Sum of emissions from the first year to the sixth year = 661,505

This illustrates the concept of exponential decrease.

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The 4ml of this solution, this patient will need in a day.

Multiplication is the mathematical operation that is used to determine the product of two or more numbers. If an event can occur in m different ways and if following it, a second event can occur in n different ways, then the two events in succession can occur in m × n different ways.

We are given that 80 kg patient needs a medication X in the amount of 0.25 mg/kg/day.

The medication comes in a liquid solution of 50 mg for every 10 ml therefore,

0.25 x 80 = 20mg/day

50/10 = 5mg/ml

Then the patient need in a day;

20/5= 4ml

Theefore, The solution, this patient will need in a day is 4 ml.

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The coordinates of S(x₁, y₁)=(3/2 , 5) if F(0, 2) and G(2,6) and the lines divided in the ratio 1:3

Finding the ratio by which a line segment is divided by a point internally or externally in coordinate geometry is done using the Section formula. The centroid, incenter, and ex center of a triangle are determined using it. Finding systems' centers of mass, equilibrium locations, etc. are all done using this method in physics. Finding the ratio by which a line segment is divided by a point internally or externally in coordinate geometry is done using the Section formula. The centroid, incenter, and ex center of a triangle are determined using it.

Given,

F(0, 2) and G(2, 6)

And also given that the points S lies on the way along FG then:

The lines divides the ratio,

1:3= m:n

Here we have to find the coordinates of S, we get:

S(x₁, y₁)=((mx₁+n x₂)/(m+ n), (my₁+n y₂)/(m+ n))

=((1(0)+3(2))/4 , (1(2)+3(6))/4)

=(6/4 , 20/4)

=(3/2 , 5)

S(x₁, y₁)=(3/2 , 5)

Therefore, the coordinates of S(x₁, y₁)=(3/2 , 5).

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Answer:

----------------------------------

Given

We need to find the point S(x, y) which makes FS = 1/3 FG.

Each coordinate of S is at 1/3 FG distance from F.

Find values of x and y:

So the point S is at (2/3, 10/3).

Answer:

continue the streak:)

Step-by-step explanation:

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hoped this helped:)

brainliest for the brains lol

Answer:

not enough information

The distance between the cars after a hour is 14 meters.

Speed is the rate at which an object's location changes in a particular direction. The distance traveled on relation changes to a particular direction. The distance in relation to the time it took to travel the distance is the speed. It's a scalar quantity.

In this case, the cars leave town at the same time. One travels west at 56 mph, and the other travels south at 42 mph.

With the speed, the total distance after an hour will be:

= 56 - 42

= 14 meters

The cars are 14 meters apart.

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Answer:

B: y=2/3-5x

Step-by-step explanation:

15x+3y=2

-15x.     -15x

3y=2-15x

/3 /3. /3

y=2/3-5x

so B is the correct answer

hopes this helps please mark brainliest

Answer:

D

Step-by-step explanation:

Based on the information provided, it appears that the correct answer would be option D: y=2 - 15x. This can be determined by solving the given equation for y by isolating the y-term on one side of the equation. To do this, you can subtract 15x from both sides of the equation, resulting in y = 2 - 15x.

Here is the complete process for solving the equation:

Begin by subtracting 15x from both sides of the equation:

15x + 3y = 2

-15x -15x

This simplifies to:

3y = 2 - 15x

Now, divide both sides by 3 to isolate the y-term:

3y/3 = (2 - 15x)/3

This simplifies to:

y = 2/3 - 15x/3

Finally, since 3 is a common factor, we can simplify the right side of the equation further by dividing both the numerator and the denominator by 3:

y = 2/3 - 15x/3

y = (2/3) / (3/3) - (15x/3) / (3/3)

y = (2/3) / 1 - (15x/3) / 1

y = 2/3 - 15x/3

y = 2/3 - 5x

Therefore, the equivalent equation is y = 2/3 - 5x, which is option D.

The measure of three angles of triangle are 45°, 55° and 80°.

Angle sum property of triangle states that the sum of interior angles of a triangle is 180°.

Let the smallest angle of triangle be x.

One angle the triangle measures 10° greater the smallest angle, that is x+10°

The third angle measures 10° less than twice the smallest angle.

The third angle is 2x-10°

Now, x+2x-10°x+10°=180°

⇒ 4x=180°

⇒ x=45°

So, 2x-10°=80° and x+10°=55°

Therefore, the measure of three angles of triangle are 45°, 55° and 80°.

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Answer:

11 inches

Step-by-step explanation:

4x + x = 55    Combine like terms

5x = 55     Divide both sides by 5

x = 11  This is the length of the shortest piece the other piece is 44 4(11)

Answer:

11 inches, 44 inches

Step-by-step explanation:

First of all, we need to make this equation, into an algebraic one:

4x + x = 55

The x represents the number of inches for the rope.

Now you simplify:

5x = 55

This equation can be simplified to a regular division problem:

55/5 = x

Using basic division, x is equal to 11 inches.

Now, this is just the shorter rope.

Note that the other piece is 4 times larger than the short one:

4 x 11 = 44

Thus 11 inches and 44 inches is the answer

The reduced fraction of 0.245 is 49/200.

What is the greatest common factor (GCF)?

A group of numbers' greatest common factor (GCF) is the biggest factor that all the numbers have in common. For instance, the numbers 12, 20, and 24 share the components 2 and 4. Since four is the largest, we refer to the GCF of 12, 20, and 24 as four. Frequently, GCF is used to identify common denominators.

We have,

0.245

Write 0.245 as  

0.245 / 1

Multiply both the numerator and denominator by 10 for each digit after the decimal point.

0.245/1

=   0.245 x 1000 / 1 x 1000

=  245 / 1000

In order to reduce the fraction find the Greatest Common Factor (GCF) for 245 and 1000. Keep in mind a factor is just a number that divides into another number without any remainder.

The factors of 245 are: 1  5  7  35  49  245

The factors of 1000 are: 1  2  4  5  8  10  20  25  40  50  100  125  200  250  500  1000

The Greatest Common Factor (GCF) for both 245 and 1000 is: 5

Now to reduce the fraction we divide both the numerator and denominator by the GCF value.

245/ 1000

= 245 ÷ 5 /1000 ÷ 5

=  49 / 200

The decimal part is: 0.245 = 245/1000

Full simple fraction breakdown: 245/1000

= 49/200

Hence, the reduced fraction of 0.245 is 49/200.

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After solving the equation the value of F = (3GR -G - 8S) / 5S

Define Algebraic Expression

In mathematics, an expression that includes variables, constants, and algebraic operations is known as an algebraic expression (addition, subtraction, etc.)

Given expression is,

5F + 8 / G = 3R - 1 / S

Multiply both side by G

( 5F + 8 / G ) * G= (3R - 1 / S) * G

Simplify it,

5F + 8 = G(3R - 1) / S

Now, solve for F

5F = (3GR - G / S )- 8

5F = 3GR - G - 8S / S

F =  3GR - G - 8S / 5S

Hence, After solving the equation the value of F = (3GR -G - 8S) / 5S

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Answer:

[tex]y+5=-\frac{2}{3}(x-5)[/tex]

Step-by-step explanation:

The slope of the line is [tex]\frac{-1-(-5)}{-1-5}=-\frac{2}{3}[/tex].

Using the point [tex](5,-5)[/tex], the equation is [tex]y+5=-\frac{2}{3}(x-5)[/tex].

Answer:

Hope it helps

Step-by-step explanation:

y - 15 = -4/3(x - 9)

Formula available for acceleration, velocity and position of plane are

k²=2as, k=30a, s=450a and the value of k is 230 ft/sec

rate of changes of distances with respect to time.

rate of changes of velocity with respect to time.

Given, final velocity, v= k ft/s

time needed to attain speed k is 30 s

time, t= 30 sec

acceleration, a = constant

initially at time t=o, velocity and distance travel by aircraft was also o

initial velocity u =0, distance s = 0

as per the formula regarding velocity, distance, time and acceleration

v² = u²+2as

as per the question final velocity v= k, initial velocity u=0

k² = 2as

again, the formula v= u+at

the velocity of v after 30 second

 k= a×30

acceleration, a= k/30

from the other formula, s=ut+1/2×at²

distance travel by aircraft after 30 second with initial velocity 0.

s= u×0+1/2×a(30) ²

s= 450a

previously we got a=k/30

now, s =450×k/30= 15k

if the runway is 3450 feet long and the plane needs to use the entire runway to take off then the value of k will be

s=15k

k=230 ft/sec

hence, the value of k is 230 ft/sec

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The algebraic expression 18n - 45 is correct for the statement "45 less than the product of 18 and a number written as an algebraic expression"

We can represent an unknown number using letters and then carry out basic mathematics operations to get the value of the unknown number.

Let us represent the unknown number with the letter "n"

The product of 18 and the number will be;

18 × n = 18n

45 less than the product of 18 and the number (n) is thus written algebraically as;

18n - 45

Therefore, 45 less than the product of 18 and a number(n) is written as an algebraic expression as 18n - 45.

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The value of the number will be;

⇒ 5/2

A number which can be written in the form of fraction p / q , where q is non zero, are called Rational numbers.

Given that;

The rational number is,

⇒ 2.5

Now,

Since, The rational number is,

⇒ 2.5

Hence, We get;

⇒ 2.5 = 25/10

          = 5/2

Thus, The value of the number = 5/2

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