Ella needed to get her computer fixed. She took it to the repair store. The technician at the store worked on the computer for 3 hours and charged her $61 for parts. The total was $226. Write and solve an equation which can be used to determine x, the cost of the labor per hour.

Answer: -14

Step-by-step explanation:

-21 - (-7)

-21 + 7

-14

Answer:

-14 is the correct answer

I need help on it too. Can any one help me find the answer

Answer: C, D, E

Step-by-step explanation:

A negative multiplied by a negative is a positive. In option A, for example, a one is implied in front of the first negative sign, thus: -1 * (-1/2) = 1/2. The same goes for option B, leaving C, D, and E as the only negative values.

The stages of the race ordered from shortest to longest are:

Stage 21 : 4%

Stage 4: 0.044 x 100 = 4.4%

Stage 8: (6 / 125) x 100 = 4.8%

Stage 1 : (11 / 200) x 100 = 5.5%

Stage 17 : 0.06 x 100 = 6%

The first step is to convert the given decimals, percentages and fractions to the same measure to aid comparison. All would be converted to percentages.

Percentage is the fraction of an amount expressed as number out of 100. In order to convert a number to a percentage, multiply by 100. The sign that represents percentage is %.

Stage 1 : (11 / 200) x 100 = 5.5%

Stage 4: 0.044 x 100 = 4.4%

Stage 8: (6 / 125) x 100 = 4.8%

Stage 17 : 0.06 x 100 = 6%

Stage 21 : 4%

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The operation of Subtraction can be used to result in the smallest co-efficient term on the x term.

In the given question, Two functions are given f(x) = 3x - 1, and g(x) = 3x + 4. Now we have to find out which mathematical operation results in the smallest co-efficient term on x. We know that the basic Operations are:    

=> Now, we use the operation of Subtraction for the two functions. Which can be calculated by: f(x) - g(x), Calculating we get:

=> (3x - 1) - (3x - 4)

=> 3x -1 -3x + 4

=> 3

Here we get the Coefficient of x = 0 which is the lowest.

Hence, Subtraction will be used

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Each ribbon will be of 2/3 yards for her 6 dolls .

Division is one of the four fundamental arithmetic operations, or the process by which two numbers may be joined to produce a new number. Addition, subtraction, and multiplication make up the remaining operations. A division in mathematics is the dividing of a sum into equal portions. One can divide a group of 20 people into four groups of five, five groups of four, and so on.

length of each ribbon = 4 / 6 = 2/3 yards each

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The measure of m∠DBC in the semicircle is 90°

An equation is an expression that shows the relationship between two or more numbers and variables.

Equations are classified based on degree (value of highest exponents) as linear, quadratic, cubic and so on. Variables can be dependent or independent. Dependent variables depend on other variable while an independent variable do not depend.

From the image:

∠BAC = ∠BDC = 45° (angle in same segment are equal)

∠BCD = 90° (angle subtended at circumference by semicircle)

In triangle BDC:

∠BDC + ∠BCD + ∠DBC = 180° (angle in a triangle)

45 + 90 + ∠DBC = 180°

∠DBC = 90°

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y = -x equation does not represent a direct variation.

y = 3x + 2

y=-3x

y = 0.5x

equations are represent a direct variation

How can you tell if there is a direct variation?

Simply build ratios from a table of values if you have one and wish to determine whether the data indicate a direct variation. You have a straight variation if all the ratios are the same.

The constant of variation is k = = 3, for instance, if y varies straight as x and y = 6 when x = 2. So, y = 3x serves as the equation to describe this direct variation.

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Answer:

19

Step-by-step explanation:

Answer:

9d :)

Step-by-step explanation:

So, we have the equation 5c + 9d - 5c

We combine our like terms which are 5c and -5c bc they both have the variable "c"

When we do 5c + -5c we get 0 since were adding a negative and a positive. This leaves us with just 9d, therefore, that's your answer!

The amount of rye seed and bluegrass seed used in the mixture is 109.8 and 70.2 pounds respective.

In response to the given question;

Let's say the amount of rye seed is 'x.'

The cost of rye seed = $6.50 per pound

Let's say the amount of bluegrass seed is 'y.'

The cost of bluegrass seed = $3.50 per pound.

The total seeds are 180 pounds.

Thus,

x + y = 180

x = 180 - y .......eq 1.

The other equation for the total cost of $5.33 per pound is;

6.50x + 3.50y = 5.33×180

Put the value of x from eq 1.

6.50(180 - y) + 3.50y = 959.4

1170 - 6.50y + 3.50y = 959.4

3y = 210.6

y = 70.2

x = 180 - 70.2 = 109.8

Thus, the amount of rye seed and bluegrass seed used in the mixture is 109.8 and 70.2 pounds respectively.

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Answer:

$2139.58

Step-by-step explanation:

First, you find how much each paycheck is worth with taxes excluded, since she is only keeping 79% of the money you multiply 65,000 by 0.79=51350. Since she is getting paid twice a month, she is getting 24 paychecks a year. So you diving 51350 by 24 to get 2139.58333 but round down to 2139.58

Answer:

-3

Step-by-step explanation:

your x-axis has to be 0 then the point on the y-axis is the y-intercept

IT MEANS THE GRADIENT OF THE NEW EQUATION IS GOING TO BE

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

TOO

[tex]2 = \frac{2}{5} ( - 7) + c \\ 2 = \frac{ - 14}{5} + c \\ c = 2 + \frac{14}{5} \\ c = \frac{24}{5} [/tex]

THE EQUATION PARALLEL TO THE ONE GIVEN NOW IS

[tex]y = \frac{2}{5} x + \frac{24}{5} [/tex]

The equation of the line containing the points (1, 3) and (-1,2) is [tex]y = \frac{1}{2}x + \frac{5}{2}[/tex].

So, Option(c) is the correct one.

Given points are (1, 3) and (-1,2).

The slope of the given line is =  [tex]\frac{y_{2} -y_{1} }{x_{2}-x_{1} }[/tex]

                                                 =  [tex]\frac{2 - 3}{-1 -1}[/tex]

                                                 =  [tex]\frac{-1}{-2}[/tex] = [tex]\frac{1}{2}[/tex]

The equation of the line is given by,

y - y₁ = m(x - x₁)

[tex]y - 3 = \frac{1}{2} (x - 1)[/tex]

[tex]y = \frac{1}{2}x - \frac{1}{2}+3[/tex]

[tex]y = \frac{1}{2}x + \frac{5}{2}[/tex]

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The unknown measures of the right angle triangle are m∠V = 69° , RV = 12.85 and m∠R = 21°

A right triangle is a triangle that has one of its angles as 90 degrees.

Therefore, the side and angles of a right triangle can be found using trigonometric ratios.

Hence,

tan v = opposite / adjacent

opposite side = 12

adjacent side = 4.6

Therefore,

tan V = 12 / 4.6

v = tan⁻¹ 2.60869565217

v = 69.0265065627

m∠V = 69°

Let's find  m∠R

m∠R = 180 - 69 - 90

m∠R = 21°

Let's find RV

sin 69° = opposite / hypotenuse

sin 69 = 12 / h

cross multiply

h = 12 / sin 69

h = 12 / 0.93358042649

h = 12.8537402885

RV = 12.85 units

Therefore, the unknown side and angles of the triangle are as follows:

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The value of m is 104/13

What is Fraction?

A fraction, which also symbolizes a piece of a whole, is a mathematical symbol for any number of equal parts. When expressed in common English, a fraction, such as 1/2, 8/5, or 3/4, represents the number of components of a specific size.

The value of m must be determined.

As can be seen in light of the query

The formula is m/4 = 26 / 13

The equation will now be solved for m m/4 = 26 / 13

The result of multiplying 4 on both sides is

(m/4) x 4 = (26/13) x 4

m = (26 x 4)/13

m = 104/13.

Consequently, m has a value of 104/13.

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The number of children and the number of adults that swam in the swimming pool that day are 69 and 366 respectively.

Given that:-

Total number of people that swam in the swimming pool = 435

Price for children = 1.25

Price for adults = 2

Total receipts = 818.25

We have to find the number of  children and the number of adults that swam in the swimming pool that day.

Let the number of children that swam that day be x and,

the number of adults that swam that day be y.

Hence, we can write,

1.25x + 2y = 818.25  ...(1)

x + y = 435 ... (2)

Solving the linear equation in two variable by elimination method

Multiplying (2) by 2 , we get

2x + 2y = 870 ... (3)

(3) - (1)

0.75x = 870 - 818.25

0.75x = 51.75

x = 51.75/0.75

x = 69

From (2), we can write,

69 + y = 435

y = 435 - 69

y= 366

Hence, the number of children and the number of adults that swam that day are 69 and 366 respectively.

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Using the remainder theorem, the remainder of the divisions of p(x) = 4x³ + 6x² - 8x - 2 by the polynomials are given as follows:

Suppose that we have a polynomial p(x), that is divided by a linear term x - a, the remainder is given by the numeric value of p(x) at x = a, that is, p(a).

For this problem, the polynomial is given as follows:

p(x) = 4x³ + 6x² - 8x - 2.

Then the remainder for each division is given as follows:

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Answer:



m < 1 = 146

m < 3 = 146

m < 4 = 34

Step-by-step explanation:

Angles 2 and 3 are suplementary angles that equal 180

angle 2 + angle 3 = 180

34 + angle 3 = 180

angle 3 = 180 - 34

angle 3 = 146

angles 2 (34 degrees) and 4 and angles 1 (146 degrees) and 3 are congruent so...

m < 1 = 146

m < 2 = 34

m < 3 = 146

m < 4 = 34

Hope this helps! :)

Answer:

[tex]m \angle 1= \boxed{146}\;^{\circ}\\\\m \angle 3= \boxed{146}\;^{\circ}\\\\m \angle 4= \boxed{34}\;^{\circ}[/tex]

Step-by-step explanation:

Angles on a straight line sum to 180°.

⇒ m∠1 + m∠2 = 180°

⇒ m∠1 + 34° = 180°

⇒ m∠1 = 146°

Vertical Angle Theorem

When two straight lines intersect, the opposite vertical angles are congruent.

Applying the Vertical Angle Theorem:

Answer:

66%

Step-by-step explanation:

99 of 150 is 66%

and 150 of 99 is 151%

Y is 2.25 when x is 9.

The relationship between two values where their ratio equals a constant number is known as a direct proportion or direct variation. It is symbolized by the proportional sign (). According to the direct proportion formula, if y is directly proportional to x, we can state that y = kx, where k is a constant. The generic form of the direct proportion equation is also y = kx. where k is the proportionality constant.

Given Data

If x and y vary directly and y is 24 when x is 6, find y when x is 9.​

It is direct proportional

So,

y = kx

To find constant,

k = [tex]\frac{y}{x}[/tex]

x = 6 and y = 24

k = [tex]\frac{6}{24}[/tex]

k = [tex]\frac{1}{4}[/tex]

When x = 9,

k = [tex]\frac{1}{4}[/tex]

y = kx

y = [tex]\frac{1}{4}[/tex](9)

y = [tex]\frac{9}{4}[/tex]

y = 2.25

Y is 2.25 when x is 9.

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The answer is x=2.

[tex](6^{x}) ^{10} =(6^{12} )^{2} /6^{4}[/tex]

[tex]6^{10x} =(6^{12}) ^{2} -6^{4}[/tex]  

10x=24-4

10x=20

x=20/10

x=2

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Answer:

32

Step-by-step explanation:

this expression cannot be simplified because there are no like terms to combine with the numbers in the expression.

the number that goes in the ? is 32

Answer:

B

Step-by-step explanation:

Reflection over x axis

This is a reflection over the x-axis (B)

The percent of Thompson's Scores that are greater than 73.8 is 95%

The percent of Thompson's Scores that are between 64.2 and 67.4 is 69% to 94%

given data

a mean of about 70.6 strokes

a standard deviation of about 3.2 strokes

Applying the 68%, 95%, and 99.7% Rule. This rule says that standard deviations is changed to percentages when:

Hence we calculate how many standard Deviations that gives 73.8 as follows

since the73.8 is greater than the mean we add the SD to the mean

70.6 + 3.2 = 73.8

73.8 is 1 SD but we are looking for value greater than 73.8. This should be just above 73.8, hence from 2 SD which is 95%

What percent of Thompson's scores are between 64.2 and 67.4

Applying the 68%, 95%, and 99.7% Rule

The numbers asked is less than the mean hence we subtract

70.6 - 3.2 = 67.4    ( 1 SD = 68% )

70.6 - 3.2 - 3.2 = 64.2    ( 2 SD = 95% )

The question asks the percent of Thompson's scores between 68% and 95%. This is 69% to 94%.

The question said between hence the end values are not inclusive

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The spread and consistency of data.

Answer: 3:5

Step-by-step explanation:

We are looking for the ratio of baskets made to baskets attempted

made: attempted

9:15

We can divide each number by 3

9/3: 15/3

3:5

The ratio of baskets made: attempted  is 3:5