A line has a slope of -1/7. It passes
through the points (1,2) and (3,y).
What is the value of y?

Answers

Answer 1

Answer:

y = 12/7

Step-by-step explanation:

Slope = (change in Y) / (change in x)

-1/7 = (y - 2) / (3 - 1)

-1/7 = (y - 2)/2

Cross multiply:  -1(2) = 7(y - 2)

                             -2 = 7y -14

                        -2 + 14 = 7y

                                12  = 7y

                               12/7 = y

Answer 2

Let's find y

[tex]\\ \sf\longmapsto m=\dfrac{y_2-y_1}{x_2-x_1}[/tex]

[tex]\\ \sf\longmapsto \dfrac{-1}{7}=\dfrac{y-2}{3-1}[/tex]

[tex]\\ \sf\longmapsto \dfrac{-1}{7}=\dfrac{y-2}{2}[/tex]

[tex]\\ \sf\longmapsto -2=7y-14[/tex]

[tex]\\ \sf\longmapsto 7y=12[/tex]

[tex]\\ \sf\longmapsto y=12/7[/tex]


Related Questions

WILL MARK BRAINLIEST PLS HELP ME ​

Answers

Answer:

c 480 square inches your welcome

i believe it is c. 480 square inches

HELP I NEED ANSWERS NOW

Answers

Answer:

I am not sure but I think it is c

Step-by-step explanation:

What is the first quartile of 13,25,25,29,18,15,32​

Answers

Answer:

The first lower quartile is 15

The median is 25

Step-by-step explanation:


Which one of the following U.S. customary units is closest in volume to I liter?

Answers

Answer:

c

Step-by-step explanation:

Quart is one of the following U.S. customary units is closest in volume to 1 liter. Option D is correct.

What is volume?

The term "volume" refers to the amount of three-dimensional space taken up by an item or a closed surface. It is denoted by V and its SI unit is in cubic cm.

The relation between the quart and the liter is found as;

1 quarts = 0.94635295 liters

The value in liter is approximately equal to 1. Quart is one of the following U.S. customary units is closest in volume to 1 liter.

Hence,option D is correct.

To learn more about the volume refer:

https://brainly.com/question/1578538

#SPJ2

Given these 2 map diagrams which is a function and why?

Answers

The first one cause no input have more than one output.
The first one because no input have more than one output.

5 tenths + 8 hundreths

Answers

Answer:

50,800

Step-by-step explanation:

Asap
It is for past paper that is due in tomorrow 29th

Answers

Answer:

(i) 22.5

(ii) 7.2

Step-by-step explanation:

(i)

AB:PQ = 2:5 = 1:2.5

So PQ is 2.5 times longer than AB.

PQ=2.5AB=(2.5)9=22.5

(ii):

Since the triangles are similar, their sides are in ratio to each other. So if PQ was 2.5 times longer than AB, QR must also be 2.5 times longer than BC:

QR=2.5BC

BC=QR/2.5=18/2.5=7.2

Find 50% of 108:
Find 25% of 108:
Find 75% of 108:

Answers

Answer:

50% of 108: 54

25% of 108: 27

75% of 108:  81

Step-by-step explanation:

Hope this helps have a nice day

Answer:

50% : 54

25% : 27

75% : 81

Step-by-step explanation:

If you multiply by the decimal version of the precentages, you will get the remaining amount of how much it is. so to find 50% of 108, you do 108 * 0.50 and it will give you the 50% of 108.

Use exponents to rewrite this expressions: 2 × 2 × 2 × 2 × 4 × 4 × 4

Answers

Answer:

2^10

Step-by-step explanation:

convert the following recurring decimal to a rational number 0,72​

Answers

Answer:

The repeating decimal 0. 72 can be written as a ratio of two integers with numerator 8 and denominator 11 as the numerator and denominator, respectively. As a result, it is a logical number (named after ratio). If a number's decimal representation repeats or terminates, it may be seen to be rational.

Step-by-step explanation:

0.72 equals 8 /11

as a fraction.

How do you turn 0.72 repeating into a fraction?

Detailed Answer:

Step 1: To convert 0.72 repeating into a fraction, begin writing this simple equation:  

n = 0.72 (equation 1)  

Step 2: Notice that there are 2 digits in the repeating block (72), so multiply both sides by 1 followed by 2 zeros, i.e., by 100.  

100 × n = 72.72 (equation 2)  

Step 3: Now subtract equation 1 from equation 2 to cancel the repeating block (or repetend) out.  

100 × n = 72.72

 1 × n = 0.72

99 × n = 72  

72 /99

could be the answer, but it still can be put in the simplest form, i.e., reduced.  

To simplify this fraction, divide the numerator and denominator by 9 (the GCF - greatest common factor).  

n = 72

99  = 72 ÷ 9

99 ÷ 9  = 8  11 .

So,   0.72 = 8 /11

as the lowest possible fraction.

_____________________________________

(hope this helps can i plz have brainlist :D hehe)

Identify whether the following equation has a unique solution, no solution, or infinitely many solutions. 3 + 5= 8

Answers

Answer:

to me it's a simple solution

Step-by-step explanation:

A group of students must collect at least 5120 to organize a science fair. They have already collected $40. Which graph best represents the possible amounts of money the
students still need to collect
HHH
++
.
20 40
60
1000 14001
+++
++
20 40
600 100 120 5401600
AHH
206000 470018

Answers

Answer:i believe its c

Step-by-step explanation:its the only graph that starts on 40

The area of the figure below is ___ cm2. Round to the nearest hundredth where necessary. PLEASE HELP! WILL MARK BRAINLIST! THANK YOU!

Answers

Answer:

20.9

Step-by-step explanation:

its the same as the other side, don't think to much about it

Answer:

20.9 Is the right answer

Step-by-step explanation:

hope this helps

I will try and give Brainliest

Answers

D? i’m pretty sure sorry if it’s wrong

Answer:

[tex] \boxed{A. \: 134 \: in³} [/tex]

Explanation:

Volume of a cone: ⅓πr²h.

Where r is the radius, and h is the height.

The diameter is twice (2 times) the radius.

(⅓)(π)(4²)(16) – (⅓)(π)(4²)(8) =

256 / 3 π – 128 / 3 π =

128 / 3 π =

42 ⅔ π = 134.041287... ≈ 134 in³

PLEASE HELP !! ILL GIVE 40 POINTS ; PLUS BRAINLIEST !! DONT SKIP ANSWER.

Answers

Answer:

yxu and tux are the alternate interior angles

Step-by-step explanation:

you just go across and then the other side

so pretty much mirroring it twice

PLZ HELP!!! NO LINKS OR NON-ANSWERS!!!!!!!

Answers

I literally just did this lol ( b d and e) i did it on paper

Branliest will be helpful

Thx

dot plot shows the number of siblings each student has do at least 50% of students have more than 2 siblings? how do you know?

Answers

Answer:

Yes, because 2, 3, and 4 siblings added together will pass half of 20 ( the total of everything).

Step-by-step explanation:

Pedro is building a playground in the shape of a right triangle. He wants to know the area of the playground to help him decide how much sand to buy. Compose the playground and a matching triangle into a rectangle. What are the dimensions of the​ rectangle? H= 4 1/3yd L=18yd

Answers

Answer:

it equals 39 yd²

Step-by-step

Area= 1/2 base= 18  height= 4 1/3

multiply 1/2 x 18 = 9

9 x 4 1/3= 39

the answer is 39 yd²

What is the area in square feet of the ceilling​

Answers

That would be a 120 Square Feet.

Use the length of one side of the ceiling, which is 12, and then use the other side that is 10. The ten feet comes from the floor. think of it in 2-Dimensional

How do I solve for x?

Answers

Answer:

x = 4.8

Step-by-step explanation:

Since quadrilateral JKLM and PQRS are similar toe ach other, therefore the ratio of their corresponding sides are equal.

Thus:

QP/KJ = PS/JM

Substitute

8/5 = x/3

Cross multiply

5*x = 3*8

5x = 24

x = 24/5

x = 4.8

A bag contains 8 blue coins and 10 red coins. A coin is removed at random and replaced by three of the other color.
Part 1 out of 3
What is the probability that the removed coin is blue? Enter your answer as a simplified fraction. (PLEASE HELP)

Answers

Answer:

Wait can you re expain in the comments

Step-by-step explanation:

Can someone please help me I am a no brain and very dum
Suppose 12% of students surveyed said they have tried riding a zip line.

a. How many would say they have tried riding a zip line if 100 students were surveyed.

Answers

200$ because that’s the percent

PLEASEE HELP
EXTRA POINTS
BRAINLIEST

Painter Pete uses a ladder to reach a second story window on the house he is
painting. The bottom of the window is 20 feet above the ground. The foot of the
ladder 15 feet from the house. How long is the ladder?

Answers

Answer:

25 feet

Step-by-step explanation:

20^2 + 15^2 = 625

square root of 625 is 25

Answer:

that's a big ladder

35ft

Step-by-step explanation:

help me pls pls pls PPPPPPPPPPPPPPPLLLLLLLLLLLLLLLLSSSSSSSSSSSSSSSSS

Answers

Required area = 9× 5 + 6×3

= 45+18

= 63

The correct answer is 75+ 18 which is equal to 93

What is the surface area of the figure? 408ft^2 458ft^2 545ft^2 720ft^2

Answers

9514 1404 393

Answer:

  (b)  458 ft²

Step-by-step explanation:

The total area is the sum of the L-shaped front and back areas and the areas of the 6 rectangular faces.

The front L-shaped area can be considered to be a 12 ft × 12 ft square with a 5 ft × 7 ft rectangle cut from the upper left corner. Its area is then ...

  (12 ft)(12 ft) -(5 ft)(7 ft) = (144 -35) ft² = 109 ft² . . . . front area

__

The sum of the areas of the rectangular faces is the product of the width of the figure (5 ft) and the perimeter of the L-shaped face. That perimeter is the sum of the edge lengths. Starting from the lower-left corner and working clockwise, we find the perimeter to be ...

  7 ft + 7 ft + 5 ft + 5 ft + 12 ft + 12 ft = 48 ft

Then the sum of rectangular face areas is ...

  (48 ft)(5 ft) = 240 ft² . . . . rectangular face area

The total surface area is then ...

  2×front area + rectangular face area

  = 2×109 ft² +240 ft² = 458 ft² . . . . total surface area

One number is six less than a second number. Six times the first is 10 more than 4 times the second. Find the numbers
The value of the first number is

Answers

Answer:

1st number = 17

2nd number = 23

Step-by-step explanation:

x = 1st number

y = 2nd number

x = y - 6

6x = 10 + 4y

substitution method:

6(y - 6) = 10 + 4y

6y - 36 = 10 + 4y

2y - 36 = 10

2y = 46

y = 23

find 'x':

x = 23 - 6

x = 17

Solve each of these equations. Explain or show your reasoning.

2(x+5)=3x+1

3y−4=6−2y

3(n+2)=9(6−n)

Answers


2(x+5)=3x+1 = 9

Subtract
2
x
2x from both sides then Subtract
1
1 from both sides.

33
3
Solve the proportion.
р
28

Answers

p=308

I hope this is correct and if it is: I just cross multiplied

Answer:

p = 308

Step-by-step explanation:

Please answer or give the steps to answer please please please this is my state test and i can’t fail

Answers

Answer:

1. 466.3ft

2. 12.1m

Step-by-step explanation:

1.

Imagine this as a triangle like shown in pic attached, then use tan to find 'x', the distance between the base of the tower and the fire:

tanA=opposite/adjacent

tan25=x/1000

x=100tan25

x=466.3ft

2.

Imagine this as a triangle like shown in pic attached, then use sine to find 'x', the kite's vertical height above the boy's hand:

sinA=opposite/hypotenuse

sin12=x/50

x=50sin12

x=10.4m

The kite's height off the ground is this plus the height of the boy's hand from the ground: 10.4+1.7=12.1m

Look at the image below, please! (I mark brainliest!)

Answers

Answer:

C, D, E

Step-by-step explanation:

10% of 33 is the same as the following, 0.1 * 33, 1/10 * 33, and 10/100 * 33, because they are all multiplying 33 by 0.1

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