Mathematics High School

Are these proportional? And I need to show work sooo for example on the first question we did in class we wrote down

-3/1
-6/2=-3/1
-9/3=3/1

I hope I’m not asking for too much but I want to start off my trimester strongly.

Are These Proportional? And I Need To Show Work Sooo For Example On The First Question We Did In Class

Answers

Answer 1

Answer:

Step-by-step explanation:

If y is proportional to x,

y ∝ x

y = kx

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

Here, k = Proportionality constant

For y = -8 and x = -4,

k = [tex]\frac{-8}{-4}[/tex]

k = 2

For y = -4 and x = -2

k = [tex]\frac{-4}{-2}[/tex]

k = 2

For all values of x and y proportionality constant = 2.

For x = 0 and y = 0,

If we graph a line passing through these points, the line will pass through the origin (No y-intercept).

And we know that any line passing through the origin represents the proportional relation between x and y variables.

Therefore, given table represents the proportional relation.

Related Questions


12. A store charges a restocking fee for any returned item based upon the
item price. An item priced at $300 has a fee of $15. What percentage of the
item price is the restocking fee?

A. 4%
B.5%
C.6%
D.7%

Answers

B b b b b b b b b b b b b b b b b b

A baseball is hit in the air. Its height above the ground is described by the function
Ht=-16t^2+45t+5, where H(t) represents the height in feet of the ball t seconds after it is hit. To the nearest hundredth of a second, for how much time will the ball be in the air? Find algebraically.
help guys plz i suck at math, also step by step is needed Branliest is the reward like always

Answers

Answer:

2.9195

Step-by-step explanation:

To find the time we need to equate the function the zero and solve for t:

[tex] { - 16t}^{2} + 45t + 5 = 0[/tex]

Using the general formula we have that:

[tex]t = \frac{ - 45 + \sqrt{ {45}^{2} - 4 ( - 16)(5)} }{2( - 16)} \\ = \frac{ - 45 + \sqrt{2345} }{ - 32} [/tex]

then:

[tex]t = \frac{ - 45 + \sqrt{2345 } }{ - 32} = - 0.107 \\ or \\ t = \frac{ - 45 - \sqrt{2345} }{ - 32} = 2.9195[/tex]

Since the time has to be positive we conclude that the ball is in the air 2.9195 seconds.

Victor wants to buy fertilizer for his yard. The yard is 45 feet by 55 feet. The direction on the bag of fertilizer say that one bag will cover 1,250 square feet. How many bags of fertilizer should Victor buy to be sure that he covers the entire yard? 2 SEE ANSWERS

Answers

Answer: 2 bags

Step-by-step explanation:

First find the area of the yard.

The area given the units would be:

= Length * Width

= 45 * 55

= ‭2,475‬ ft²

Victor needs enough fertilizer to cover ‭2,475‬ft² but each bag covers only 1,250 ft².

The number of bags needed is therefore:

= ‭2,475‬ / 1,250

= 1.98

= 2 bags

A university has 40,110 students. In a random sample of 210 students, 14 speak three or more languages. Predict the number of students at the university who speak three or more languages. The expected number of students at the university who speak three or more languages is .

Answers

40110 : 210= 191
191 x 14 = 2674
2674 people can speak three or more languages

What is the Domain, Range, Decreasing, Increasing, Y-Intercept, X-Intercept, Maximum, and Minimum of the graph shown?

Answers

Step-by-step explanation:

I am not able to see the whole graph, but what I could see is that

domain=22

range=11

the x-intercept is there is no x-intercept!

y-intercept is 2

max is 10

minimum is 1

I am so sorry! But if you let me know about the decreasing and increasing values like that are they asking for? The greatest places in the graph where it increases or decreases?

Hope that helps :)

What is the surface area of this triangular pyramid?

Answers

Answer:

48.25

Step-by-step explanation:

This is because when finding the area of a triangle it is known as base times height then divide by 2 and since the base is a triangle, multiply 4.3 times 5 which is 21.5 and divide by 2 which is 10.75 and for the top since its also a triangle multply 5x5 which is 25 divide by 2 whicih is 12.5, but there is 3 of them so multiply by 3 and you get 37.5, then add 37.5+10.75 to get 48.25 cm^2

True or false: if two parallel lines are cut by a transversal, each pair of alternate angles are congruent?

Answers

Answer: True.

If two parallel lines are cut by a transversal, then the alternate interior angles formed are congruent . When two lines are cut by a transversal, the pairs of angles on either side of the transversal and outside the two lines are called the alternate exterior angles .

find the area of the composite figure 12 yd height 10 yd base​

Answers

Answer:

120 yd^2

Step-by-step explanation:

1. 12x10= 120

2. 120 yd ^2

there are two containers.container A has 2 blue marbles, 3 green marbles and 5 yellow marbles in container A.container B has 2 blue marbles and 4 yellow marbles in container B. witch container has the greater probability of picking yellow?

Answers

Container B has a greater probability of picking yellow. Please mark brainliest would greatly be appreciated.
container B is the one with the greater probability in picking yellow

What is −4|a - 13| ≤ −56?

Answers

Answer:

a ≤ 27

Step-by-step explanation:

If the terminal side of angle θ goes through the point (−313√13,−213√13) on the unit circle, then what is cos(θ)?

Answers

Answer

cos(θ) = –313√(13)

Step-by-step explanation:

There is a rule we are to establish first to get the answer right.

If the terminal side of an angle θ in standard position intersects a unit circle A(x, y), then cos(θ) = x and sin(θ) = y.

Therefore, given that the terminal side of angle θ goes through the point (−313√13,−213√13) on the unit circle:

cos(θ) = –313√(13)

A stock can go​ up, go​ down, or stay unchanged. How many possibilities are there if you own 3 ​stocks?

Answers

Answer:

There are 27 different possible outcomes.

Step-by-step explanation:

Assuming that you have 3 different stocks:

First, we need to find the number of events and the number of possible outcomes for each event.

Here we can assume that each one of the stocks is a event, and the number of possible outcomes for each one are:

Stock 1: 3 options (up, down, stay)

Stock 2: 3 options (up, down, stay)

Stock 3: 3 options (up, down, stay)

The total number of possible outcomes is equal to the product of the numbers of options for all the events.

Then the total number of possibilities is:

C = 3*3*3 = 27

Find the Equation of the lines.

Answers

So you do this and that and then I don’t know what to do 76

find the value of x. round to the nearest tenth. the diagram is not drawn to scale

Answers

It would be 11 divided by cos(24) since cos is adjacent over hyp. Then you would do 11/x = cos24 solving for x gives your answer

The base of a rectangular pyramid is 13 inches long and 12 inches wide.
The height of the pyramid is 8 inches. What is the volume of the
pyramid?

Answers

Answer:

Area = 1/2 (Base) (Height)

Area = 1/2 (12 in) (8 kn)

Area = 1/2 (96 in)

Area = 48 in^2

Volume = (Area) (Length)

Volume = (48 in^3) (13 in)

Volume = 624 in^3

Answer:

V=L•W•H

3=13·12·8

3=416

=416³

Step-by-step explanation:

Finding the Volume of a Rectangular Pyramid

Your overall formula for finding the volume of these multi-faceted shapes is V = (l x w x h) / 3. Basically, your first step is finding the area of the base by multiplying length by width. Once you determine the area of the base, multiply that by the height.

The general volume of a pyramid formula is given as: Volume of a pyramid = 1/3 x base area x height.

If the cube has a side length s, then each pyramid has an s by s base and height s/2, and its volume is 1/6 the volume of the cube, which is 1/3 base times height. ... They are congruent, so have volume 1/3*base*height as the base is a square the side of the cube and the height is the side of the cube as well.Whereas the basic formula for the area of a rectangular shape is length × width, the basic formula for volume is length × width × height.

#CarryOnLearning

trigonometry please help! work need to be shown

Answers

Answer:

x = 5.56

Step-by-step explanation:

Apply trigonometric function to find x

Reference angle = 46°

Hypotenuse = 8

Adjacent length = x

Apply CAH:

Cos 46 = Adj/Hyp

Cos 46 = x/8

8 × Cos 46 = x

5.55726696 = x

x = 5.56 (nearest hundredth)

Smoothies weren't cutting it so we went to Red Robin to order a burger. Our bill was $5.79. Avon has a 5.25% tax and our
waitress earned a 15% tip. What was the total bill?

Answers

Answer:

$6.96

Step-by-step explanation:

5.25% of 5.79

5.79 × 5.25/100 = $0.303975 or $0.30

15% of 5.79

5.79 × 15/100 = $0.8685 or $0.87

total

$5.79 + $0.30 + $0.87 = $6.96

solve the following equation -3(3 + 6b) = 36 +3b

Answers

Answer:

Exact Form:

b=-5/7

Decimal Form:

b=-2.142857

Mixed Number:

b=-2 1/7

A painter can paint 120 square feet with 4 gallons of paint. Which statement about the unit rate is true?

Answers

Answer:

30 (ft^2/gal)

Step-by-step explanation:

The "unit rate" in this problem is (number of square feet covered) / (1 gallon paint).

Here we have the unit rate

120 ft^2

---------------- = (30 ft^2)/gal or 30 (ft^2/gal)

 4 gallons

Jonathan has $3,500. He deposited part of the money in his savings account and part in his checking account. If the amount he deposited into his savings account is $800 more than twice the amount he deposited into his checking account, how much did he deposit into his checking account?​

Answers

Answer:

$900

Step-by-step explanation:

the steps are above

The measure of angle CBD is 140 degrees. What is the measure of angle CBA?
B

Answers

Answer:

its a acute 120 degree angle

Can someone help me with this. Will Mark brainliest.

Answers

Answer:

The lines are perpendicular.

Step-by-step explanation:

If the lines are parallel, then the slopes are equal

If the lines are perpendicular, then the slopes are negative reciprocals

If neither of the above occur, then the lines are neither parallel or perpendicular.

y = 2x + 3  is in slope-intercept form, so the slope = 2

2y + x = 6

Solve for y:    2y = -x + 6

                        y = -1/2(x) + 3    so the slope = -1/2

2 and -1/2 are negative reciprocals, so the lines are perpendicular.

Note:  Negative reciprocals have a product of -1.  2(-1/2) = -1

Multiply o binomial by a trinomial
(x-1) (x²+x+1)
​

Answers

Answer:

Is this helpful or wrong?

Answer:

hey there, the product is x³ - 1

how to solve this wokr​

Answers

Answer:

[tex]2a^{2} +4ab+2b^2[/tex]

Step-by-step explanation:

(a + b)(2a + 2b)

2a^(2) + 2ab + 2ab +2b^2

[tex]2a^{2} +4ab+2b^2[/tex]

'Five times a number minus eight is 17.5.

Answers

Answer:

5.1

Step-by-step explanation:

you need to work backwards.

so do 17.5 + 8 then divide by 5 to get 5.1

i hope this helps :)

james bought an ipad for $450 his friends carl buys the same one for 12% off how much did carl pay

Answers

Answer:

$365.99

Step-by-step explanation:

$450 - 12% = $365.99

Brainly for the correct answer!
Is [tex]\frac{1}{0}[/tex] a real fraction?

Answers

Answer:

No

Step-by-step explanation:

There is no numerator, no denominator, no division symbol because it is not a legal fraction. The denominator can never be zero in any fraction.

Please help I will give brainliest

Answers

A
because a closed dot means included and it is going higher than -6 so it is greater than

Answer:

x ≥ -6

Step-by-step explanation:

The arrow is directing towards the right, in which the line contains number greater than -6. Moreover the circle on top of -6 is closed, proving that it is 'greater than or equal to'. (if it was greater than, the circle on top of the number would be open; the inner part of the circle wouldn't be shaded)

Please answer I’ll make brainliest

Answers

Question:

In triangle FGH, the measure of angle H = 90°, HG = 48, FH = 55, and GF = 73. What ratio represents the tangent of angle G?

___________________________________________________

Solution:

The triangle FGH should look like that in the attachment.

Tangent of angle G = opposite side/adjacent side

= FH/HG

= 55/48


graph the point (-10,-7) on the coordinate plane

Answers

I think that’s right
Other Questions
Question 2 of 10Which of the following best describes the slope of the line below?A. NegativeOB. ZeroC. Undefinedo D. Positive A quadrilateral has the following coordinates:Point A: (4, 7)Point B: (4, 7)Point C: (4, 7)Point D: (4, 7)What is the length of side CD? A.Food Shortages in TexasB.Texas is an Oil StateC.Construction of a Transcontinental RailwayD. Decline of the Cattle Industry how many Cabinet members assist the President? HELP!! WILL GIVE BRAINLIEST!!As old central business districts and industrial zones in more developed countries lost businesses and employment in the mid- to late twentieth century, suburban development expanded. Which of the following types of cities resulted from rapid suburban growth and the expansion of retail areas, office developments, business centers, and corporate headquarters to provide jobs and services in suburban areas?A. MegalopolisesB. Financial districtsC. State capitalsD. Edge citiesE. Manufacturing zones What is the y-intercept of a line through (2, 7) and perpendicular to thegraph of y=-3/2x+6 Math help 20 pointsssssssss SO I NEED HELP PLS HELP IM STUCK ON IS MEAN QUESTION!!!PLS HELP! What type of word group is the following?Walking down the street A. Phrase B. Dependent Clause C. Independent Clause D. Dependent Phrase (ignore this) question is below. f(x) = 3(x - 2)find f(5) The number of people using an older version of a spreadsheet program decreases at a rate that is proportional at any time to the number of people still using the version at that time.There were 10,000 people using the older version of the spreadsheet program when the new version first came out. The number of people still using the older version decreases by 20%, percent every 6 months. A seagull is flying 11 meters above the water. Directly below the bird, a fish is swimming 31 meters under the surface. What is the total difference in distance between the bird and the fish? A 11 B 20 C 31 D 42 Beck Manufacturing reports the following information in T-account form for 2019. Raw Materials Inventory Begin. Inv. 11,600 Purchases 57,000 Avail. for use 68,600 DM used 48,000 End. Inv. 20,600 Work in Process Inventory Begin. Inv. 16,000 DM used 48,000 Direct labor 31,100 Overhead 57,000 Manuf. costs 152,100 Cost of goods manuf. 138,200 End. Inv. 13,900 Finished Goods Inventory Begin. Inv. 17,200 Cost of goods manuf. 138,200 Avail. for sale 155,400 Cost of Goods Sold 136,500 End. Inv. 18,900 Required: 1. Prepare the schedule of cost of goods manufactured for the year. 2. Compute cost of goods sold for the year. Calculate this right and you will get the brainlist in how did Odysseus tricked the Cyclops to escape thecave? 1.] what is the mood of the poem "Child eating Mango poem", also explain your choice2.] what is the tone of the poem of "child eating Mango poem". Explain your choice Help right answer get brainliest Do you feel as though you have a fully developed sense of identity? If not, how do you think you will develop your identity over time? What are some positive aspects of having a strong identity? Are there any negative effects of having a strong identity? Researchers would like to assess the overall health of white pine trees in a state park. Using a computer program,the researchers selected 100 random points in the state park and assessed the trees closest to the selectedpoints. Of the 100 trees selected, 24 showed damage to their lower limbs. Which of the following describes thesample in this setting?all white pine trees in the worldthe 24 trees that showed damagethe 100 trees checked for damageall white pine trees in the state park