I need help, algebra is hard

Answer:

125.00

Step-by-step explanation:

The equation of the line y = 4.2x + 7.9 expressed in standard form is 42x - 10y = -79.

The equation of a line can be expressed in three different forms: standard form, slope-intercept form, and point-slope form.

The standard form of an equation of a line is expressed as ax + by = c, where a and b, if all possible must be integers, are the coefficients of variable x and y, respectively, and c is a constant. Meanwhile, slope-intercept form is given by the formula y = mx + b, where m is the slope of the line and b is the y- intercept. On the other hand, given the slope m and a point on the line (x , y), we can express the equation in point-slope form, (y - y1) = m(x - x1).

Given the equation of a line, multiply both sides by 10 to turn the decimals into integers.

y = 4.2x + 7.9

10y = 10(4.2x + 7.9)

10y = 42x + 79

Rewriting it in standard form ax + by = c,

10y = 42x + 79

42x - 10y = -79

To learn more about equation of line in standard form: https://brainly.com/question/17095050

#SPJ4

The domain of this relation (-1,5) (-2,1) (3,-1) (3,-4) is  {-2,1,3,4}

What is domain ?

A domain name is a word or phrase that designates a sphere of administrative control, authority, or autonomy on the Internet. Websites, email services, and other online services are frequently identified by their domain names. There were 330.6 million registered domain names as of 2017.

First we learn what is relation

Let A and B are two sets. Then the Cartesian product of A and B is denoted by A × B and defined as

Now a Relation R from A to B is a Subset of A × B

Here the given relation is {(-1,5) (-2,1) (3,-1) (3,-4)}

Let R be the relation

Then R ={(-1,5) (-2,1) (3,-1) (3,-4)}

Now domain of the relation

= { x : (x, y) ∈ R }

= {-2,1,3,4}

To learn more about domain visit:https://brainly.com/question/28135761

#SPJ1

The number 5 will be placed in the middle.

In order to make the sums across and down equal, we have to arrange the numbers in such a way that they balance each other out. We know that the middle number will be the average of the four numbers surrounding it.

So, if we place 2 and 8 on either side of the middle number, the sum of these two numbers is 10. To make the sum equal, we need two more numbers that add up to 10. The only two numbers that fit the criteria are 4 and 6.

Hence, the middle number will be the average of 4 and 6, which is 5. So, the answer is 5.

To know more about average, here

https://brainly.com/question/24057012

#SPJ4

--The given question is incomplete; the complete question is

"Place the numbers 2, 4, 5, 6, and 8 in the circles so that the sums across (horizontally) and down (vertically) are equal. Which number will you place in the middle?"--

Mike and Kim should sell at least 875 yearbooks.

Assuming that the cost of producing each yearbook is $4 and the selling price is $20, the profit made from selling one yearbook would be:

Profit per yearbook = Selling price - Cost per yearbook

Profit per yearbook = $20 - $4

Profit per yearbook = $16

Therefore, the number of yearbooks Mike and Kim need to sell before breaking even can be calculated as follows:

Break-even point = Total investment ÷ Profit per yearbook

Break-even point = $14,000 ÷ $16

Break-even point ≈ 875

Therefore, Mike and Kim need to sell at least 875 yearbooks before breaking even.

Learn more about break-even point

brainly.com/question/22871926

#SPJ11

Answer:

Not a function fails the vertical line test

Step-by-step explanation:

This is not a function.  The value of x = -1  goes to two different values of y

This would fail the vertical line test

Answer:

the first one

Step-by-step explanation:

use the vertical line test. the horizontal line would intersect at two points.

Answer:

There are infinitely many solutions

Step-by-step explanation:

The right side is the exact same as the left side, except the two numbers are flipped.

Answer:

(-∞, ∞)

Step-by-step explanation:

Answer:

3⁹

Step-by-step explanation:

you can use a calculater and it will give 19683 and 3⁹ gives 19683

Answer:

do it yourself what do you do while teacher is teaching

Using a linear approximation, we can estimate f(100.5) by considering the tangent line at x = 105. The estimated value is f(100.5) ≈ 61.

Given that f(105) = 64 and f'(105) = 2, we want to estimate the value of f(100.5). Using a linear approximation, we can consider the tangent line to the function at x = 105 as an approximation near this point.

The equation of the tangent line can be expressed as follows: y = f'(a)(x - a) + f(a), where a is the point of tangency. In this case, a = 105. We know f(a) = 64 and f'(a) = 2, so the equation of the tangent line becomes y = 2(x - 105) + 64. To estimate f(100.5), we substitute x = 100.5 into the equation of the tangent line: y ≈ 2(100.5 - 105) + 64. Simplifying the expression, we get y ≈ -5 + 64 = 59.

Therefore, using the linear approximation, we estimate that f(100.5) is approximately 59. This approximation provides an estimate of the function's value at x = 100.5 based on the information given at x = 105.

Learn more about Function : brainly.com/question/28278690
#SPJ11

A congruent polygon refers to two or more polygons that have the same shape and size. There must be an equal number of sides between two polygons for them to be congruent.

Congruent polygons have parallel sides of equal length and parallel angles of similar magnitude. When two polygons are congruent, they can be superimposed on one another using translations, rotations, and reflections without affecting their appearance or dimensions. Concluding about the matching sides, shapes, angles, and other geometric properties of congruent polygons allows us to draw conclusions about them.

Learn more about Congruent polygons here:

https://brainly.com/question/2096633

#SPJ1

Answer:

bro, i answered it already

in your previous question

the second 133.40

The bicycle manufacturer is studying the reliability of its models and analyzing the probability of defects. They found the probability of a brake defect is 4 percent and the probability of both brake and chain defects is 1 percent.

Given that the probability of a defect with brakes or chain is 6 percent, we can find the probability of a chain defect using the formula: P(A and B) = P(A|B) * P(B), where P(A and B) is the probability of both events A and B occurring, P(A|B) is the probability of event A occurring given that event B has occurred, and P(B) is the probability of event B occurring.

In this case, we want to find the probability of a chain defect given that there is a defect with either the brakes or the chain. Let's use the events: A = brake defect, B = chain defect, From the problem statement, we know that: P(A) = 0.04 (probability of a brake defect), P(A and B) = 0.01 (probability of both a brake defect and a chain defect)
P(A or B) = 0.06 (probability of a defect with the brakes or the chain).

To find P(B|A or B), we can use the formula: P(B|A or B) = P(A and B) / P(A or B) = 0.01 / 0.06, = 1/6, = 0.1667, So the probability of a chain defect given that there is a defect with either the brakes or the chain is 16.67%, or approximately 2/12 or 1/6.

Therefore, the correct answer is option 2: 2%, Solving for the probability of a chain defect, we get: P(chain defect) = 0.06 - 0.04 + 0.01 = 0.03, So, the probability of a chain defect is 3 percent.

To know more about probability click here

brainly.com/question/15124899

#SPJ11

Ben has to kick the ball about 15.23 meters to reach Clay.

To find the distance between Ben and Clay, we can use the Pythagorean theorem. We need to find the length of the hypotenuse of the right triangle formed by the horizontal and vertical distances between Ben and Clay.

The horizontal distance between Ben and Clay is 7 squares to the right. Since each square is 2 meters long, the horizontal distance is 14 meters.

The vertical distance between Ben and Clay is 3 squares up. Since each square is 2 meters long, the vertical distance is 6 meters.

Using the Pythagorean theorem, we can find the distance between Ben and Clay:

distance = sqrt((14)^2 + (6)^2) ≈ 15.23 meters

Therefore, Ben has to kick the ball about 15.23 meters to reach Clay.

Learn more about Pythagorean theorem at https://brainly.com/question/343682

#SPJ1

Answer:

4.3

Step-by-step explanation:

Because the y-coordinate stays the same, only look at the x-axis. Subtract 17.1 - 21.4 to get your length

Answer:

1. a + b + c = 180

2. b + d = 180

3. d = a + c

Step-by-step explanation:

1. a + b + c = 180:

Angles in a triangle add up to 180

2. b + d = 180:

Angles in a straight line equal 180 because they are supplementary angles

3. d = a + c:

ΔACD is an exterior angle, and ΔACB is interior adjacent, hence ∠a and ∠c add up to ∠d

Answer:

Hello!!! Princess Sakura here ^^

Step-by-step explanation:

1) a+b+c=180 because if you take two right angle triangles and put them together you'll make a rectangle and thats 360, so half of the 360 is 180 which equals the two right triangles.

2) b and d are supplementary angles so if you add b and d they should equal 180, which is the measure of a straight line.

3) if you add c+a it should always equal d.

Answer:

320 miles

Step-by-step explanation:

he drives to work 5 times a week and back 5 times a week, so 5+5 = 10 and 32x10 is 320

Answer:

In the first picture: c = √32

In the second picture: a = √175

Step-by-step explanation:

I suppose that we want to find the value of c (in the first image):

Here we have a triangle rectangle, remember the Pythagorean theorem.

if c is the hypotenuse, and a and b are the cathetus of a triangle rectangle, then we have:

a^2 + b^2 = c^2

For the first triangle we know that:

a = 4, b = 4

Then:

(4)^2 + (4)^2 = c^2

16 + 16  = c^2

32 = c^2

√32 = c

Now in the second image we want to find the value of a, such that:

c = 16,  b = 19

Now we can replace these in the equation:

a^2 + b^2 = c^2

a^2 + 9^2 = 16^2

a^2 = 16^2 - 9^2 = 175

a = √175

To save on shipping costs, Camile should choose a box that is lightweight and has a small volume.

This is because she has realized that she is charged based on the volume of the box and not the weight.

Therefore, a smaller volume box would cost her less than a larger volume box of the same weight.

For example, if Camile needs to ship a 5-pound item, she should choose a smaller box with a volume that is just enough to fit the item, rather than a larger box with more empty space. This is because the larger box would have a greater volume, and therefore, incur a higher shipping cost even though it weighs the same as the smaller box.

In summary, when selecting a box to save on shipping costs, it is important to consider both weight and volume. Camile should choose a box that is lightweight and has a smaller volume to reduce her shipping costs.

Learn more about volume from

https://brainly.com/question/14460183

#SPJ1

Answer:

What connects to what.

Step-by-step explanation:

"Vertices is the plural of the word vertex, which is the point at which two or more lines/edges meet. " QRS is like "1,2,3. " Not sure if this is what you mean??

Answer: 30 days

Explanation: 12 x 20 = k, where k is a constant. 8x = k, where x is the number of days. So 12 x 20 = 8x, 8x = 240, x = 30 (30 days).

Hi student, let me help you out! :)

. . . . . . . . . . . . . . . . . . . . .  .  . . . . . .  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..

We are asked to find the value of \(\mathrm{36x-8y^2}\) when x=3 and y=-6.

So, we substitute the values of the variables instead of the variables:

\(\mathrm{36(3)-8(-6)^2}\)

Square -6 first:

\(\mathrm{36(3)-8\times36}\)

Multiply 36 times 3 and 8 times 36:

\(\mathrm{108-288}\)

Upon subtraction, we obtain

\(\bigstar~\mathrm{\underline{-180}}\)

Hope it helps you out! :D

Ask in comments if any queries arise.

#StudyWithBrainly

~Just a smiley person helping fellow students :)

The numbers arranged in decreasing order from greatest to least is given by 133 , 53 ,34 ,33 ,20 ,17 ,7 .

Decremental Order When numbers (or other items) are arranged from largest to smallest, this is known as decreasing order.

Given numbers are 7, 133 , 34, 33 ,17, 20 , 53.

From looking at the numbers to arrange them in decreasing order we can see that 133 is the greatest of the numbers , so it will come first.

Then comes 53 which is the second highest number , then comes 34 the third highest number and so on unless we get the least number which is 7.

Hence the given numbers are arranged greatest to least:

133, 53, 34, 33, 20, 17.

To learn more about decreasing order visit: https://brainly.com/question/765087

#SPJ9

Answer:

360$

Step-by-step explanation:

you multiply I think?

Answer:

14k-8

Step-by-step explanation:

8k - 2(4-3k)

distributive property

8k - 8  + 6k

add like terms

8k + 6k -8

14k - 8

14k - 8

If anyone will look for the value of k, k is 4/7 btw but the answer to simplify the expression would be 14k-8.

Answer

14k-8

Step-by-step explanation:

combine like terms

Jody has created a systematic sampling error by forgetting to include a segment of the population that is relevant to the study.

Systematic sampling is a sampling method where every nth member of a population is selected to be part of the sample. In Jody's case, she forgot to include a specific segment of the population, which means that the sampling process was not systematic. This error can introduce bias and affect the representativeness of the sample.

No calculations are required for this type of error.

Jody's mistake in not including a relevant segment of the population has resulted in a systematic sampling error. To ensure the accuracy and validity of the study, it is important to rectify this error by including the missing segment or adjusting the sampling method accordingly.

To know more about sampling error follow the link:

https://brainly.com/question/30765764

#SPJ11

Answer:

hi it's

Easy B

Step-by-step explanation:

No Problem

Using a system of equations, the quantity of Type A coffee that Trey's Coffee Shop blended with Type B coffee was 78 pounds.

A system of equations or simultaneous equations is two or more equations solved concurrently, simultaneously, or at the same time.

Unit Cost Per Pound:

Type A coffee = $5.80

Type B coffee = $4.25

The total quantity of pounds of the blend = 142 pounds

The total cost of 142 pounds = $724.40

Let the number of Type A coffee = x

Let the number of Type B coffee = y

x + y = 142 ... Equation 1

5.8x + 4.25y = 724.40 ... Equation 2

Multiply Equation 1 by 4.25:

4.25x + 4.25y = 603.5 ... Equation 3

Subtract Equation 3 from Equation 2:

5.8x + 4.25y = 724.40

-

4.25x + 4.25y = 603.5

1.55x = 120.9

x = 78

Substitute x = 78 in either equation:

x + y = 142

78 + y = 142

y = 64

Thus, 78 pounds of Type A coffee was used for the mixture.

Learn more about a system of equations at https://brainly.com/question/13729904.

#SPJ1