Solve the following system using the substitution method.you must show ALL work and use the substitution method.
4x+y=14
x-2y=8

Answers

Answer 1

Answer:

y=-2

x=4

Step-by-step explanation:

4x+y=14

x-2y=8 then x=8+2y

substitute for x in 4x+y=14

4(8+2y)+y=14

32+8y+y=14

reduce

32+9y=14

32+9y-32=14=32

9y=-18

9y/9=-18/9

y=-2

x=8+2(-2)=4


Related Questions

A number x increased by 12 is 104.

Answers

Answer:

x = 92

Step-by-step explanation:

Equation: x + 12 = 104

104 - 12 = 92

Answer:

x+12=104

x=92

Step-by-step explanation:

Subtract 12 from 104 to get your answer

help ive been stuck on this for a while now

Answers

Answer:

a. 18

b.10

c.64

Step-by-step explanation:

a. 27/3=9

9x3=27

9x2=18

b. 36/9=4

9x4=36

40/4=10

c. 48/3=16

3x16=48

4x16=64

If it takes 20 minutes to drive to the store, 9 minutes to walk from your car to the back of the store, then back to the register, 2 minutes to walk back to you car, and 20 minutes to drive back why has my dad been gone for 9 years?​

Answers

Answer:

Maybe he ran out of gas. Give him a bit time to refill, and you'll be fine :)

Twice a number increased by five is 11. What is the number?

Answers

Answer:

2

Step-by-step explanation:

Mr. Fowler's science class grew two different varieties of
plants as part of an experiment. When the plant samples
were fully grown, they compared their heights.
Pls help

Answers

Option D is the correct option.

What is Mean Absolute Deviation?

'The mean absolute deviation (MAD) is the mean (average) distance between each data value and the mean of the data set.'

According to the given problem,

The mean height Variety A = 19 [ from the table ]

The mean height of variety B = 13 [ from the table ]

The spread is given by the mean absolute deviation, which 1.2 for Variety A and 2.4 for Variety B. So we can see that, the spread in Variety A is lesser than the spread in Variety B, which shows that the average height of Variety A varies less than the average height of Variety B.

We can see from the table that the average height of a variety A is indeed greater than that of Variety B. Also we can see that the Mean Absolute deviation of Variety A is 1.2 which is lesser than the Mean Absolute deviation of Variety B.

Hence, option D is correct since the average height of Variety A is greater than Variety B, and also the mean varies lesser in Variety A than in Variety B.

Learn more about mean absolute deviation here: https://brainly.com/question/10528201

#SPJ2

whats 10 to the power of 8 equals what

Answers

Answer:

[tex]100000000[/tex]

Step-by-step explanation: can i have brain plz!

is (2,0) a solution to the equation y=6x

Answers

Answer:

no

Step-by-step explanation:

x = 2

y = 0

substitute x with 2 and y with 0

0 = 6(2)

0 = 12

this is not true, so (2,0) is not a solution

Help me for cookie pls

Answers

Answer:

x = 83°

Step-by-step explanation:

ZW is a straight angle which means it is equal to 180°

So 97° + x° = 180°

180° - 97° = 83°

Rafiq is makeing a fruit punch using 48 ounces of grape juice abd some seltzer water. He wants to make 10 equal servings that are atleast 9 ounces each. Should he add 32 ounces of seltzer water or 48 ounces of seltzer water

Answers

Answer:

48 ounces of seltzer water

Step-by-step explanation:

From the question, we are told that:

Rafiq is making a fruit punch using 48 ounces of grape juice and some seltzer water.

He wants to make 10 equal servings that are at least 9 ounces each.

The total number of ounces that he want so have is at least

= 10 × 9 ounces = 90 ounces

Should he add 32 ounces of seltzer water or 48 ounces of seltzer water?

Let the number of ounces of seltzer water that he wants to add = x

At least = More than or equal to which is represented by inequality sign = ≥

Hence:

48 ounces of grape juice + x ounces of seltzer water ≥ 90 ounces

48 + x ≥ 90

x ≥ 90 - 48

x ≥ 42 ounces of seltzer water

From this calculation, the least amount of seltzer water he can add is 42 ounces.

Therefore, Rafiq should add 48 ounces of seltzer water

c(x) = 1/4x + 2
Find c(8)

Answers

the answer is 4

c(8)=1/4(8)+2
c(8)=2+2
c(8)=4

hope this helps !

For each percentage, find a matching statement to describe it.

10% of a number
25% of a number
50% of a number
75% of a number
80% of a number
100% of a number
Equal to that number
12 of that number
14 of that number
110 of that number
34 of that number
45 of that number

Answers

Answer:

mk,m

Step-by-step explanation:

mlmkm km

An airplane takes 3 hours to travel a distance of 2700 miles with the wind. The return trip takes 5 hours against the wind. Find the speed of the plane in still air and the speed of the wind.

Answers

Answer:

720 mph, 180 mph

Step-by-step explanation:

Let the speed of the plane is x, speed of the wind is y

Speeds add up when in directions are same and subtract when opposite

Then as per the given we have equations:

3( x + y) = 27005(x - y) = 2700

Simplify the equations:

x + y = 900x - y = 540

Sum the two equations and solve for x:

2x = 900 + 5402x = 1440x = 720 mph

Find the value of y:

y = 720 - 540 = 180 mph

Speed of the plane is 720 mph

Speed of the wind is 180 mph

What’s the missing side length 28 21

Answers

Answer:

HOW ON THE WORLD WE SUPPOSED TO ANSWER DIS ?!?!?!

Step-by-step explanation:

Is there a shape or pic you can show.

Marco charges $42.99 for a
repair that takes 2 hours.
Marco charges $87.99 for a
repair that takes 5 hours,

What’s the y intercept and slope of this equation??

Answers

Answer:

y-intercept= 12.99      slope= 15.00x+12.99

Step-by-step explanation:

87.99-42.99= 45.00

45.00/3=15

$15 an hour

42.99-(15)(2)

42.99-30.00

12.99

hiii please help! i’ll give brainliest if you give a correct answer tysm

Answers

hi! let's work through this-
it's 2 and 1/2 feet tall, which is 5/8 of the wanted height

therefore it would be A

There were 60 multiple-choice questions and he answered 60% of them correctly. How many problems did Garrett get right?

Answers

Answer:

Garrett gets 36 problems right.

Step-by-step explanation:

Given that,

Total number of MCQs = 60

Correct answers = 60%

We need to find how many problems did Garrett get right. It can be calculated by finding 60% of 60 such that,

[tex]C=\dfrac{60}{100}\times 60\\\\=36[/tex]

So, Garrett gets 36 problems right.

simplify 3x^2-2x+1
x=2

Answers

Answer:

9

Step-by-step explanation:

3(2)^2 - 2(2) + 1

3(4) - 4 + 1

12 - 3

9

substitute 3(2)^2-2(2)+1
so 3*4-4+1
12-4+1
8+1
=9

What is the slope intercept form when m = 1/2 & b = 89 ?
Helppppppppp

Answers

Answer:

[tex]y = \frac{1}{2}x + 89[/tex]

Step-by-step explanation:

slope-intercept form: y  = mx + b

y = (x , y)

x = (x , y)

m = slope = 1/2

b = y-intercept = 89

Plug in the corresponding numbers & variables to the corresponding variables:

y = (1/2)x + 89

[tex]y = \frac{1}{2}x + 89[/tex]  is your answer.

~

Answer:

y= 1/2x+89

Step-by-step explanation:

mark person above brainliest

have a good one!

What is the area to 16 square feet

Answers

Answer:

1.48645ft

Step-by-step explanation:

brainliest plssss

f(x)=sin x-3 cos x is a sinusoid true or false

Answers

Answer:

true

Step-by-step explanation:

Explain why the area of the large rectangle is (2+3+4)a hurry my sis need some help with the question

Answers

Answer:

because that is the length hight and width

Step-by-step explanation:

they are using the formula L•W•H ( •= times)

yes its me the one iwth 55 zeroes
i have another random question for u
50389203029138213/932810392748392748329473

Answers

Answer:

thanks

Step-by-step explanation:

50389203029138213/932810392748392748329473

What are the solutions of this quadratic equation

Answers

Answer:

It's A.

Step-by-step explanation:

Graph DEF and its image when you translate DEF using vector

Answers

Answer:

The image coordinates are D'(8, 5), E'(12, 3) and F'(10,0)

Step-by-step explanation:

Given the vertices of △ DEF are D (2, 5), E (6, 3), and F (4, 0). We have to translate the triangle using the vector (6, 0)

Now, translation by vector (6, 0)

D (2, 5)=D'(2+6, 5+0)=D'(8, 5)

E (6, 3)=E'(6+6, 3+0)=E'(12, 3)

F (4, 0)=F'(4+6, 0+0)=F'(10,0)

Now, we have to label the coordinate of the triangle or to get image of triangle after translation.

Hence, The image coordinates are D'(8, 5), E'(12, 3) and F'(10,0)

Step-by-step explanation:

Now that you have investigated cube roots as inverses to cubes, let’s look at other cube roots…
Look at the below examples.
∛2 ∛13 ∛57 ∛130 ∛275

Answers

Answer:

Step-by-step explanation:

3√2= 1.2599

3√13=2.3513

3√57=3.8485

3√130=5.0658

3√275=6.503

Thanks for who helps me

Answers

Answer:

x = 25

Step-by-step explanation:

(4x - 35) = 180 - 115

4x - 35 = 65

4x = 100

x = 25

Estimate:
19 + 17.77 =
37
B
31
35
D
41

Answers

Answer:

Step-by-step explanation:

Option A 37 is the correct answer

HELP GUYS THIS IS NOT FUNNY
WHAT IS 20 PLUS 20 IMCNOT LYING

Answers

Answer:

its 40 dude

Step-by-step explanation:

he figure below shows lines r, n, and p intersecting to form angles numbered 1, 2, 3, 4, 5, and 6. All three lines lie in the same plane.

Based on the figure, which statement provides enough information to conclude that line ris perpendicular to line p?
O22-00
26 009
21 +2600
23 24 00"
Seee the picture to get clear question!!

Answers

Answer:

B and F

Step-by-step explanation:

Angle 1 + Angle 2

Angle 3

Angle 4 + Angle 5 (choice F)

Angle 6 (choice B)

We eliminate choices (A), (D), and (E) as these would make p perpendicular to n rather than r. And we can eliminate choice (C) as Angles 3 and 6 are vertical angles, so they would have equal measure regardless of whether any of the lines were perpendicular. The correct answers are (B) and (F).

bri bought 5 boxes of oranges each box had 8 oranges she split the oranges evenly into 10 bags how many oranges were in each bag

Answers

Answer:

The answer is 4

Step-by-step explanation:

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