Solve the system of linear equations by graphing
y=-x+7
y=x+1

The percent error is a measure of how accurate a measurement is. It is calculated by taking the difference between the measured value and the true value, dividing that difference by the true value, and then multiplying by 100 to get a percentage.

In this case, the true value of the baseball's speed is 4.2 miles per hour and the measured value is 5 miles per hour. To find the percent error:

(5 - 4.2) / 4.2 * 100 = 0.190476 * 100 = 19.0476%

So the percent error in this measurement is 19.0476%. This means that the measurement was off by 19.0476% from the true value.

Alternatively, we can round it to 19% for ease of interpretation

Therefore, the percent error in this measurement is 19%.

Answer:

[tex]-x^{2}[/tex] -4x + 21

Step-by-step explanation:

-(x-3)(x+7)

(-x + 3) ( x + 7)

[tex]-x^{2}[/tex] - 7x + 3x + 21

[tex]-x^{2}[/tex] -4x + 21

The percentage of the people that surveyed shop at a local grocery store is 57%.

        The number of people who buy at the local grocery store = 43

        The percentage  [tex]=\frac{43}{76} \\\\[/tex]

                                     = 0.5657 * 100%

                                     = 57 %

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The range of

The logarithmic function f(x) = log_b x is a decreasing function if and only if b > 1.

To see why, consider that for any positive real number x, log_b x increases as x increases. This can be seen by using the definition of logarithms: log_b x is the power to which b must be raised to produce x. As x increases, the power to which b must be raised to produce x must also increase, so log_b x must increase as well.

Therefore, if b > 1, then log_b x is a strictly decreasing function, because as x increases, the power to which b must be raised to produce x increases at an increasing rate, so log_b x decreases at an increasing rate. On the other hand, if 0 < b < 1, then log_b x is a strictly increasing function, because as x increases, the power to which b must be raised to produce x increases at a decreasing rate, so log_b x increases at a decreasing rate.

It is important to note that for b = 1, the logarithmic function is undefined, as log_1 x is not defined for any positive real number x.

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If one is the sole factor that connects a fraction's numerator and denominator, then that fraction is said to be in its simplest form.The mixed fraction is 33*3/4

As an illustration, the fraction 89 has only one common component between the digits 8 and 9, which is 1.Since fractions always work or can be calculated when they are in their simplest form, we simplify them.When two numbers are represented together, they are called mixed numbers.

Based on the given conditions, formulate:45 / 1/1/3

Convert the expression into a fraction: 45/1/1+1/1

Expand the fraction to get the least common demominator: 45/ 3/1*3+1/3

Calculate the product or quotient:45/3/3 +1/3

Write the numerators over common denominator:45/3+1/3

Calculate the sum or difference:45/4/3

Divide a fraction by multiplying its reciprocal:45* 3/4

Write as a single fraction:45* 3/4

Calculate the product or quotient:135/4

Convert to mixed fraction: 33*3/4

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The value of (10x - 2y) + (-3y) - (2x-2y) is 8x-3y (option A)

In math, to subtract means to take away from a group or a number of things. When we subtract, the number of things in the group reduces or becomes less. The minuend, subtrahend, and difference are parts of a subtraction problem.

For example, if 5 mangoes were taken from a basket filled with 20 mangoes, the number of mangoes left in the basket is calculated by subtracting 5 from 20 i.e 20-5 = 15 mangoes.

(10x-2y) + (- 3y) - (2x-2y)

10x +2y -3y-2x +2y

collect like terms

10x -2x+2y-3y-2y

8x-3y

= 8x - 3y

Therefore the value of Subtracting (2x - 2y) from the sum of (10x - 2y) and (-3y) is 8x+3y

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Two numbers are: - 36.65 and 0.655. This can be solved by using the concept of equation.

An equation is an algebraic expression that proves two mathematical expressions are equal in algebra, and this is how it is most commonly used. For instance, the equation 7x + 14 = 35 consists of the two equations 7x + 14 and 35, which are separated by the 'equal' sign. The point-slope form, standard form, and slope-intercept form are the three main types of linear equations.

By deleting parenthesis and grouping like words, each side of the equation may be made simpler. The changeable item on one side of the equation can be separated using addition or subtraction. To determine the variables, apply divisions or multiplication.

Given that,

two numbers multiply to -24 and add 36.

Let, two numbers are: x and y

Now, xy = -24 ............. (1)

or, y = - 24/x

x + y = 36 .............. (2)

Next, put y = - 24/x in equation no. (2) we get -

x + (-24/x) = 36

or, x² - 24 = 36x

or, x² - 36x - 24 = 0

or, x = -36.65

so, y = (-24/x) = (-24/ - 36.65)

y = 0.655

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The equation of the line in slope intercept form is  y = 4x + 5.

The equation of line can be represented in slope intercept form as follows:

y = mx + b

where

A line passes through the points (0, 5) and (1,9).  The slope of the line can be found as follows;

m = slope = 9 - 5 / 1 - 0

m = 4 / 1

m = 4

Hence, let' find the y-intercept of the equation using (0, 5).

y = 4x + b

5 = 4(0) + b

b = 5

Therefore, the equation of the line is y = 4x + 5.

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The number of people in the waiting room is 102.

A fraction is a quantity that is a non-integer. In maths, a fraction usually has a numerator and a denominator. The numerator is the number above. While the denominator is the number below. An example of a fraction is 2/3.  

The first step is to determine the total number of people in the waiting room. To do this, divide 136 by 2/3.

Number of people in the waiting room = 136 ÷ 2/3

= 136 x 3/2 = 204

Number of people in the waiting room if it is half full = total number of people in the waiting room x 1/2

204 x 1/2 = 102

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An equation with infinite solutions has both sides equal.

We know that a solution of an equation is a value that satisfies given equation.

As we know the system of equations has infinitely many solutions if the system of lines are coincident, and if they have the same y-intercept.

In some equations, any value for the variable makes the equation true. This means, an equation has infinitely many solutions.

Consider the equation 5x + 13 = 3x + 13 + 2x

5x + 12 = 5x + 12             .....(combine like terms)

13 = 13                           ........(subtrsct 5x from each side)

As we know 13 = 13 is always true.

To check that above equation has an infinite number of solutions, we try substituting some different values for x

For x = 3

5(3) + 13 = 3(3) + 13 + 2(3)

15 + 13 = 9 + 13 + 6

28 = 28

The statement 28 = 28 is always true. So, x = 3 is a solution.

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Protein of [tex]125 g[/tex] Yoghurt A is [tex]6,5 g[/tex]

Protein of [tex]150 g[/tex] Yoghurt B is [tex]4,0 g[/tex]

How many grams of protein are provided by [tex]100 g[/tex] of yoghurt A?

First, find the ratio of the weight of the yogurt A

[tex]125 g : 100 g[/tex]

125 and 100 have the same factor is 25. then divide both numbers by 25 to simplify it.

[tex]\frac{125}{25}:\frac{100}{25} =5:4[/tex]

Find grams of protein are provided by [tex]100 g[/tex] of yoghurt A use comparison [tex]5:4[/tex]

[tex]\frac{4}{5}(4)=\frac{16}{5}=3,2 g[/tex]

[tex]3,2g[/tex] of protein are provided by [tex]100 g[/tex] of yoghurt A.

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To write 1 more than a number, we use the mathematical operation of addition and the notation 1 + Number = N+1.

To write 1 more than a number, we need to use the mathematical operation of addition. Addition is the process of combining two or more numbers to find the total or sum.

In this case, we are given the number 1 and we are asked to find the number that is 1 more than it. To do this, we can use the mathematical notation: 1 + Number = N+1.

This notation means that we are adding 1 to a number, which results in N+1. The "+" symbol is the addition operator and it is used to indicate that we are performing an addition operation. The "=" symbol is used to indicate that the result of the addition is N+1.

Another way to write 1 more than a number is to use the phrase "1 plus a number". This phrase indicates that we are adding 1 to a number to get N+1.

Therefore, In short, to write 1 more than a number, we use the mathematical operation of addition and the notation 1 + Number = N+1. This means that we are adding 1 to a number, resulting in N+1. It can also be written as "1 plus N", indicating the same operation.

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The area on the map in square centimetres is 64 cm².

The scale of the plan is 1:20, meaning that for every 1 unit of measurement on the plan, the corresponding measurement on the actual boat is 20 units.

If the actual area of the base of the boat is 0.64 m², then the area on the map will be:

(0.64 m²) * (1/20)² = 0.0064 m²

To convert this to square centimetres, we multiply by 10,000 (since 1 m² = 10,000 cm²):

0.0064 m² * 10,000 = 64 cm²

Therefore, the area on the map in square centimetres is 64 cm².

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Answer:

16 cm²

Step-by-step explanation:

The scale of the map indicates the ratio of the linear dimensions of the map to the actual ones. Then the area of the map will correlate with the actual one, as with a scale square:

S map = S actual * (1:20)²

S map = 0.64 m² * 1/400

S map = 0.0016 m²

But we know that 1 meter contains 100 cm, so 1 m² = 10,000 cm². Then:

0.0016 m² * 10000 = 16 cm²

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A. The answer for part A is $460.

B. The answer for part B is 11,166.67 dollars

What are the Profit and Loss?

A. To find the commission earned on the first $4,000 in sales, we can multiply $4,000 by 4% which is (4,000 * 0.04) = 160 dollars

To find the commission earned on the remaining amount of sales above $4,000, we can subtract $4,000 from $9,000 to find the amount of sales above $4,000 which is (9,000 - 4,000) = 5,000

then we can multiply $5,000 by 6% which is (5,000 * 0.06) = 300 dollars

So the total commission earned is 160 + 300 = 460 dollars.

So the answer for part A is $460.

B. To find the amount of money in sales, we can use the commission formula: commission = (sales * rate)

The commission rate for sales above $4,000 is 6% and the commission earned is $670.

So, we can set up the equation as : 670 = (sales * 0.06)

We can solve this equation to find the value of sales by dividing both sides of the equation by 0.06

sales = 670 / 0.06

sales = 11,166.67

So the answer for part B is 11,166.67 dollars.

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Answer:

[tex] \sf \: 34 \: isosceles \: triangle \: - - - - - - - - - - - - - - - - - - - - - - - - [/tex]

Step-by-step explanation:

[tex]b = 144 - 2a < 2a [/tex]

So, that

[tex]a > 36[/tex]

and 2a < 144 so that

[tex]a < 72[/tex]

since a = b implies a = 48

{37,38,39.......71}/{48}

There are 71-37 = 34 isosceles triangle

Answer:

  2x -1

Step-by-step explanation:

You want to show that (3x+4) is a factor of f(x) = 6x^2+5x-4, and you want the other factor.

When the product, f(x), is divided by one of its factors, the remainder will be zero and the quotient will be the other factor.

The attached long division shows the remainder (bottom line) is zero, and the quotient (top line) is (2x -1), the other factor.

The other factor is (2x -1).

Answer:

Step-by-step explanation:

The car is moving at 1.36 miles per hour. It will travel 4.09 miles in 3 hours. If you drive like this, I would suggest speeding up.

Using properties of Similar triangles, The measure of QP is 14.49.

Triangles with the same shape but different sizes are said to be similar triangles. Squares with any side length and all equilateral triangles are examples of related objects. In other words, if two triangles are similar, their corresponding sides are proportionately equal and their corresponding angles are congruent.

Similar triangles differ in size but have the same shape. Corresponding angles are identical in similar triangles. Similar triangles have corresponding sides that have the same ratio. The ratio of the square of any two of their corresponding sides to any identical triangle's area is the same.

Given two triangles,

ΔPQR and ΔPNO are Similar,

So, their sides are present in the ratio -

NO / QR = NP / PQ

We are given, QR = 10

NP = 21

On putting the values in the NO / QR = NP / PQ equation,

⇒ NO / 10 = 21 / QP

As NO = QP (given)

We can write as -

QP / 10 = 21 / QP

⇒ QP²  =  10 × 21

⇒ QP²  = 210

⇒ QP = 14.49

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According to the solving  the average of this new list of numbers is 60.

The average is defined as the mean value which is equal to the ratio of the sum of the number of a given set of values to the total number of values present in the set.

The sum of the original list's four numbers, whose average is 90, is as follows:

4 × 85 = 232

Since 80 is the fourth number inside the original list, the first three numbers in the original list add up to:

232 − 105 = 127

The total of these updated first 3 numbers is also: if the first 3 numbers inside the new list are the same as those in the old list:

127

The total of the first four numbers with in new list, if the fourth number is 96, is:

127 + 115 = 242

As a result, the new list of four numbers' average is:

242 ÷ 4 = 60

According to the solving  the average of this new list of numbers is 60.

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The triangles SAT and SAO are congruent by the Side-Angle-Side (SAS) congruence theorem.

The Side-Angle-Side congruence theorem states that if any of the two sides on a triangle are the same, along with the angle between them, then the two triangles are congruent.

For the triangles SAT and SAO in this problem, we have that:

The common angle are between the common sides, hence the SAS congruence theorem was used to determine the congruence of the two triangles.

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Answer:

The closest estimate to the total cost of Mr. Johnson's turkey (before taxes) is $54.67.

Step-by-step explanation:

You can calculate this by multiplying the weight of the turkey (18 3/4 pounds) by the price per pound ($2.95).

(18 3/4) * ($2.95) = 54.67

The probability of selecting a 2 and then a number divisible by 4 will be C. 1/24.

Probability simply means the chance that a particular thing or event will happen. It is the occurence of likely events. It is simply the area of mathematics that deals with the numerical estimates of the chance that an event will occur

The probability of selecting 2 is 1/6.

The probability of selecting a number divisible by 4 will be 1/4.

The probability of selecting a 2 and then a number divisible by 4 will be:

= 1/6 × 1/4

= 1/24

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A formed angle has been created between the two sides. Two of the sides of XYZ are the same length if XY = YZ. It will be an isosceles triangle as a consequence.

An isosceles triangle in geometry is a triangle with two equal-length sides. There are two ways to describe it: either as having precisely two sides of equal length or at least two sides of equal length, with the equilateral triangle being an exception to the second definition. The two sides have come to an agreement.The base of the triangle is the third side of an isosceles triangle, which is not equal to the other two sides.

The two angles are exactly aligned with the equal sides.

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Answer:

Domain: x ≥ 4

Range: y ≥ 6

Step-by-step explanation:

Step-by-step explanation:

the absolute value always generates the positive value of the argument, no matter what the sign of the argument is.

+ stays +

- turns to +

so, we actually have

-3×2 + 4×5 = -6 + 20 = 14

The gradient is −3 and the y-intercept is 6.

The gradient of a function is defined to be a vector field. Generally, the gradient of a function can be found by applying the vector operator to the scalar function. (∇f (x, y)).

This kind of vector field is known as the gradient vector field. Now, let us learn the gradient of a function in the two dimensions and three dimensions.

The gradient should take a scalar function (i.e., f(x, y) and produces the vector function (∇ f).

The vector ∇f(x, y) should lie in the plane.

The gradient of a function can be found by applying the vector operator to the scalar function. I.e., ∇f (x, y).

y+3x=6

Rearrange the equation to the slope-intercept form,

y=mx +b,

where ,

m is the slope and b is the y-intercept.

Subtract 3x from both sides.

y=−3x+6

The gradient is −3 and the y-intercept is 6.

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