SOLVES FOR 50 POINTS AND BARINLISTEST

The symbols d and sd represent:

The differences in the mean of the paired data entries in the dependent samples.

What is the standard deviation?

A measure of a set of values' variance or dispersion is called the standard deviation.

Here,

d: the difference between paired data in the dependent samples.

sd:  standard deviation.

The dependent samples' dependent samples' standard deviation for the variance between the means of the paired data items.

Hence, the differences in the mean of the paired data entries in the dependent samples.

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Answer:

0, 9.5

Step-by-step explanation:

We can rewrite the equation as [tex]y=0x+9.5[/tex].

Comparing this to slope-intercept form, the slope is 0 and the y-intercept is 9.5.

The first system of equations has no solution and the second set of equations has a unique solution.

If we are having two equations as

[tex]a_{1} x^{2} +b_{1} x+ c_{1} =0[/tex]

and [tex]a_{2} x^{2} +b_{2} x+ c_{2} =0[/tex]

The condition at which these equations will have infinitely many solutions is

[tex]\frac{a_{1} }{a_{2} } =\frac{b_{1} }{b_{2} } =\frac{c_{1} }{c_{2} }[/tex]

The condition at which these equations will have infinitely many solutions is

[tex]\frac{a_{1} }{a_{2} } =\frac{b_{1} }{b_{2} } \neq \frac{c_{1} }{c_{2} }[/tex]

For, the 26th question, we have

4x +8y = -8

4x +8y +8 = 0

x +2y +2 =0 equation(1)

x =-2y +1

x +2y -1 = 0 equation(2)

On comparing these equations with the general form, we have

[tex]a_{1} = 1, a_{2} =1\\b_{1} = 2, b_{2} = 2\\c_{1} = 2, c_{2} = -1[/tex]

So, [tex]\frac{a_{1} }{a_{2} } =\frac{b_{1} }{b_{2} } \neq \frac{c_{1} }{c_{2} }[/tex]

Thus, this system of equations has no solution.

Now, For the 27th question, we have

2x - 3y = 6

2x -3y -6 = 0 equation(3)

[tex]y = \frac{2}{3}x -2 \\\\3y = 2x -6\\\\3y -2x +6 = 0[/tex] equation (4)

On comparing these equations with the general form, we have

[tex]a_{1} = 2, a_{2} =3\\b_{1} = -3, b_{2} = 2\\c_{1} = -6, c_{2} = 6[/tex]

So, [tex]\frac{a_{1} }{a_{2} } \neq \frac{b_{1} }{b_{2} }[/tex]  

Thus, this system of equations has a unique solution.

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Answer:

x = 5

Step-by-step explanation:

I'm going to assume that this is asking you to graph in Slope-Intercept form, but if I am mistaken, comment on my answer and I will happily change it.

Slope-Intercept form:

y = mx + b

You leave y and x as variables, while m and b are to be substituted for slope and y-intercept. y-intercept is when x=0, where a point on a line is on the y axis.

To help you learn, for example, we have an equation is slope-intercept form:

y = 8x + 3

In this case, the slope is 8 and the y intercept is 3 as m is the slope and b is the y-intercept.

The slope is the steepness of the graph. The value of the slope is how much the y-value increases if the x-value increases by 1.

We can find the slope from 2 points using this formula:

[tex]\frac{y_2 - y_1}{x_2 - x_1}[/tex]

So, we plug in our points into the formula.

[tex]\frac{-2-3}{5-5}[/tex]

Simplify.

[tex]\frac{-5}{0}[/tex]

Anything divided by 0 is undefined. This means the line we are graphing is completely vertical, known as undefined. We can only get this if the x value stays the same no matter what. In this case, the x value stays the same when the y value changes, meaning a undefined slope.

We have a special case here. If the slope is undefined, we do not use y = mx+b. Instead, we use:

x = what the x values of the 2 points are

x values of both points: 5

x = 5

Bobby spent $20 out of $75 of his monthly allowance on paintbrushes.

What is monthly allowance?

Giving someone money on a regular basis to help them pay for the things they need is known as giving them an allowance.

Main Body:

total monthly allowance = $75

Now Bobby spent 40% on his art supplies,

which means we need to calculate 40% of 75.

⇒(40/100)*75

⇒30

so Bobby spent $30 on art supplies.

now according to question,

Bobby spent 2/3 on paintbrushes

⇒2/3 of art supplies

⇒(2/3 )*30

⇒$20

Hence Bobby spent $20 on his paintbrushes.

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In a triangle ABC the value of side a is 13.12 cm.

A triangle is a three-sided closed-plane figure formed by joining three noncolinear points. Based on the side property triangles are of three types they are Equilateral triangle, Scalene triangle, and Isosceles triangle.

We know in a ΔABC, a/sinA = b/sinB = c/sinC.

GIven, In a ΔABC A = 29°, B = 36°, b = 15.8 cm.

∴ a/sinA = b/sinB.

a/sin(29°) = 15.8/sin(36°).

a/0.49 = 15.8/0.59.

a = (15.8×0.49)/0.59

a = 7.742/0.59.

a = 13.12.

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The expression for the perimeter of the square with and without brackets is 4(t + 5) and 4t + 20, respectively.

We are given a shape. The shape is a square. The side length of the square is equal to (t + 5). We have to find the expression for the perimeter of the square. A perimeter is a closed route that covers, surrounds, or outlines a two-dimensional form or length. Let the perimeter of the square be denoted by the variable "P".

The expression for the perimeter of the square in brackets is given below:

P = 4(t + 5)

The expression for the perimeter of the square without brackets is given below:

P = 4t + 20

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Answer:

Step-by-step explanation:

3060

Answer:

0

Step-by-step explanation:

153 isn't between 1-100 making the probability 0

Answer: (0,9)

Step-by-step explanation:

4-2=2

2-2=0

3+3=6

6+3=9

or just put this into the calculator on the table button

Using the properties of similar triangle and parallel lines we calculate the length of GF as √65 units.

It is given that GH is parallel to DE or GH || DE in the trapezium GHDE .

Therefore in the triangles ΔFDH and ΔFDE , we can say that

ΔFDH is similar to ΔFDE by angle angle angle axiom of similarity.

Now using the properties of similar triangles we can say that :

FG / DF = GH / DE

Now let us consider the length of GF be x.

Therefore DE = x

Now using the properties of similar triangles and substituting the values we get:

x / 13 = 5 / x

or, x² = 65

or, x = √65

Therefore the length of DE and GF is equal to √65.

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The Verdicts on each value of u according to the given inequality are as follows; 11, 13 and 8.

It follows from the task content that the values which are solutions to the inequality; u ≤ 13 are to identified.

To determine the solution of an inequality on a number line, the number line representation of such inequality is very pivotal.

Therefore, the inequality given; u ≤ 13 simply implies that; the solution set of u includes 13 and all numbers to the left of 13 on the number line.

Hence, by considering each of the given values of u; we have;

Ultimately, the solutions to the inequality among the answer choices are; 11, 13 and 8 respectively.

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0.1367 percent of randomly chosen cookies will weigh less than 14 grams.

Given data;

Is it possible to calculate the likelihood that a randomly selected cookie weighs less than 14g using the information provided above?

Let,

X = Average cookie weight in a pack of 30

E (X) = μ = 15

Var (X) = σ²/n

           = 1²/30 =  0.0333

⇒ Standard Deviation (X) = √0.0333 = 0.1826

P(X ≤ 14.8) = (X-15 / 0.1826 < 14.815/0.1826)

= P(14.815 - 0.1826)

= P(Z-1.1)

= 0.1367

Hence, the probability that a randomly selected cookie has a weight less than 14g is 0.1367

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The value of f(10) = 107 and f(-3) = 16.

The function is defined as in mathematics, an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable). An example of this would be y=x2. You only get one output for y if you enter anything for x. Considering that x is the input value.

Given that f(x)=x² + 7

We do determine the values of F (10) and F(-3)

Now f(10)

= (10)2 +7

= 100 +7

= 107

Now f(-3)

= (-3)2 +7

= 9 +7

= 16

Therefore the value of f(10) = 107 and f(-3) = 16

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Slope intercept form become C = 10 + 0.20m

What do you mean by linear equation?

A linear equation is one that has a degree of 1 as its maximum value. No variable in a linear equation, thus, has an exponent greater than 1. A linear equation's graph will always be a straight line.

Both linear equations with one variable and those with two variables exist.

The standard form or the general form of linear equations in one variable is written as, Ax + B = 0; where A and B are real numbers, and x is the single variable.

Slope intercept form is y =  mx + c where m is the slope and c is the y-intercept.

It is given that an Uber driver charges a $10 pick-up fee plus $0.20 per mile.

Let m be the total miles.

According to question, the equation become

Total charges, C = 10 + 0.20m

Therefore, slope intercept form become C = 10 + 0.20m

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Answer:C. (1,-3)

E. (2,5)

Step-by-step explanation:

Answer: P and Q could both be equal to -1

The fraction 3/5 fits into 2 1/5 more than once. The quotient is more than one.

We are given two fractions. The first fraction is 3/5, which is a simple fraction. The second fraction is 2 1/5, which is a mixed fraction. We will first convert the mixed fraction into a simple fraction.

F = 2 1/5

F = (2*5 + 1)/5

F = 11/5

We need to find out if the quotient is more or less than one. So we will divide the second fraction by the first fraction. Let the quotient be represented by the variable "Q".

Q = (11/5)÷(3/5)

Q = (11/5)×(5/3)

Q = 11/3

Q = 3.667

We can see that the quotient is more than one. Hence, the fraction 3/5 fits into 2 1/5 more than once.

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Answer:

the fraction 3/5 fits into 2 1/5 more than 1 time. That means the quotient is greater than.

Step-by-step explanation:

The ratio table's missing values are 6: 3, 24:12, and 18:9.A ratio shows how many of one number there are of another. Two numbers are expressed as x: y, which is equivalent to x/y, to represent their ratio.

A ratio shows how many of one number there are of another. Two numbers are expressed as x: y, which is equivalent to x/y, to represent their ratio.

where each of the two variables, x and y, is a separate quantity.

Additionally, the combined total is given as x + y.

Therefore, Peoples = 6, 18 and Benches = 3, 12

Now,

These ratios are equivalent: 6: 3, x: 12, and 18: y.

Ascertain the values of x and y.

Given that all ratios are equal.

so we obtain;

⇒ 6 : 3 = x : 12

⇒ 6 / 3 = x / 12

⇒ 6 × 12 / 3 = x

⇒ x = 24

And, ⇒ 6 : 3 = 18 : y

⇒ 6 × y = 18 × 3\s⇒ y = 18 × 3 / 6\s⇒ y = 9

Therefore, the ratio table's missing values are 6: 3, 24:12, and 18:9.

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Answer:

y= 12

Step-by-step explanation:

Just change the y-value (b in y=mx+b)

Answer:

ok ask your teacher

Step-by-step explanation:

Answer:

1.6544 ounces

Step-by-step explanation:

47x0.0352

1.6544 ounces

Hopes this helps please mark brainliest

The features for each of the exponential functions are listed as follows:

1.

2.

3. The key features are listed as follows:

The features to the graphs of the exponential functions are listed as follows:

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Answer:

0.5625

Step-by-step explanation:

18/32=0.5625

The expression that represents a 20% discount off the price of an item that originally cost d dollars include:

0.8d

d - 0.2d

Expression simply refers to the mathematical statements which have at least two terms which are related by an operator and contain either numbers, variables, or both.

In this case, the cost of the item is d. Since there's a 20% discount, the new cost will be:

= d - (20% × d)

= d - 0.2d

= 0.8d

The cost is 0.8d.

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1. The number of students who study all three subjects is 10.

2. The number of students who study only mathematics and chemistry is 8

Set operations are the operations that are applied on two or more sets to develop a relationship between them.

Let mathematics = M, physics = P, chemistry = C.

n(M∪P∪C) = 80

n(M) = 48

n(P) = 40

n(C) = 44

n(M∩P) = 20

n(M∩C) = ?

n(C∩P) = 24

n(M∩P) + n(M∩C) + n(C∩P) - 3n(C∩P∩M) = 32

20 + n(M∩C) + 24 - 3n(C∩P∩M) = 32

n(M∩C) = 3n(C∩P∩M) - 12 - *

We know,

n(M∪P∪C) = n(M) + n(P) + n(C) - n(M∩P) - n(M∩C) - n(C∩P) + n(C∩P∩M)

80 = 48 + 40 + 44 - 20 - n(M∩C) - 24 + n(C∩P∩M)

n(M∩C) = n(C∩P∩M) + 8 -

Equating

n(C∩P∩M) + 8 = 3n(C∩P∩M) - 12

2n(C∩P∩M) = 20

n(C∩P∩M) = 10

Putting the value of n(C∩P∩M) in *

n(M∩C) = 18

n(M∩C) - n(C∩P∩M) = 8

Therefore, eight students study mathematics and chemistry.

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The total amount of money that farmer will make to sell the tomatoes for $2 per tomato will be $14720.

Arithmetic operators are four basic mathematical operations in which summation, subtraction, division, and multiplication involve.,

Summation = addition of two or more numbers or variable

Multiplication = to multiply any two or more numbers or variables called multiplication.

The number of red tomato = 128 × 32

The number of yellow tomato = 102 × 32

The total cost will be,

2(128 × 32) + 2(102 × 32)

⇒ 2(4096) + 2(3264)

⇒8192 + 6528

⇒$14720

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Answer:

8.00am

Step-by-step explanation:

from 12 at night to 12 noon the time notation for 24 hrs and 12 hrs stay the same