Solve using the substitution method
x = 8y - 4
x + 8y = 6
i will give brainliest and pls show work​

Answers

Answer 1

You are told x = 8y -4

Replace x in the second equation with 8y-4:

8y-4 + 8y = 6

Combine like terms:

16y-4 = 6

Add 4 to both sides:

16y = 10

Divide both sides by 16:

Y = 10/16

Simplify:

Y = 5/8

Now replace y with 5/8 do find x:

X = 8(5/8) -4 = 5-4 = 1

X = 1, y = 5/8

(1,5/8)


Related Questions

If 4 units equal 36 inches, what is the value of 1 unit

Answers

Answer:

9 inches

Step-by-step explanation:

i divided 36 by 4

Answer:

9 inches

Step-by-step explanation:

You divide 36 by 4 which gives you 9 inch

Mark Brainliest Pls :(

The winning time for a race are shown in the table.

Which answer describes the average rate of change from year 2 to year 4?

A) the winning time increased by an average of 0.4 second per year from year 2 to year 4.

B) the winning increased by an average of 0.8 second per year from year 2 to year 4.

C) the winning time increased by an average of 0.475 second per year from year 2 to year 4.

D) the winning time increased by an average of 0.267 second per year from year 2 to year 4.

Answers

Answer:

The winning time increased by an average of 0.4 second per year from year 2 to year 4.

Step-by-step explanation:

I just took the quiz

The winning time for a race displayed in the table would be:

A). The winning time increased by an average of 0.4 seconds per year from year 2 to year 4.

Find the increase in winning time:

Given that,

Year                             Winning Time(seconds)

1                                          27.5

2                                         28.4

3                                         28.7

4                                         29.2

5                                         29.44

The total change in the time = (0. + 0.3 + 0.5 + 0.24)/4

= 0.485 seconds

If we round off, it becomes 0.5 seconds.

Therefore, it can be considered that an average of 0.5 seconds changes every year from year 2 to 4.

Thus, option A is the correct answer.

Learn more about "Time" here:

brainly.com/question/26941752

What is the output of the function when the input is 10? On the graph plot this point and label its coordinates

Answers

Answer:

Output value = 20

Step-by-step explanation:

Graph of any function is made up of two values → Values on x axis and Values along y axis.

x values represent the input values and y values represents the output values.

For every x value there is a y value because of which the data set is called to a function.

In other words, a function can't have two output values for a single input value.

If the input value of function is = 10

Then for x = 10, out value (along y axis) will be = 20

Therefore, Output value of the given function is 20.

Determine whether the graph shows a positive correlation, a negative correlation, or no correlation. If there is a positive or negative correlation, describe its meaning in the situation. Domestic Traveler Spending in the U.S., 1987-1999 Spending (dollars in billions) A graph titled Domestic Traveler Spending in the U S from 1987 to 1999 has year on the x-axis, and spending (dollars in billions) on the y-axis, from 225 to 450 in increments of 25. Year Source: The World Almanac, 2003

Answers

Answer:

A

Step-by-step explanation:

ifunny is dankreloaded

The solution is, Option B Negative ,as time passes, speed decreases.

What is Correlation?

Positive Correlation= With Increase in x value, y value also increases or vice versa, we call it positive correlation.

Negative Correlation= With Increase in x value, if y value decreases or vice versa, we call it negative correlation.

here, we have,

Description of the Graph

1. The Relation between , Speed and time is depicted on the graph.

2. Minute = x coordinate

Miles per hour= y coordinate

The points shown on the graph , describing the relationship are, (5,15),(10,13.8),(15,11),(20,10),(25,9.8).

There are two types of Correlation

Positive Correlation= With Increase in x value, y value also increases or vice versa, we call it positive correlation.

Negative Correlation= With Increase in x value, if y value decreases or vice versa, we call it negative correlation.

As you can see from the points plotted on the graph ,with increase in x value , y value decreases.

So it is negative correlation.

As, time passes, Speed Decreases, So it is a Negative Correlation.

Option B  Negative ,as time passes, speed decreases.

To learn more on Correlation click:

https://brainly.com/question/8474971

#SPJ7

What is the density of an object with a mass of 30g and a volume of 10mL

Answers

Answer:

3 grams/cubic centimeter

Step-by-step explanation:

Density formula is mass divided by volume

30/10=3

3 grams/cubic centimeter

solve this please

log(4x+16)=2

Answers

Answer:

X = -3.5

Step-by-step explanation:

Answer:

-7/2

Step-by-step explanation:

4x+16=2

  -16      -16

4x= 2-16

4x=-14

/4    /4

x= -7/2

Solve w^2+13w+42=0 by factoring.

Answers

Answer: {-7, -6}

Explanation: When an equation has a squared term in it,

it's called a polynomial equation.

The rule for solving a polynomial equation

is to first set it equal to 0, then factor.

Since this equation is already set equal to 0, we can factor the left side.

The left side is a trinomial that can be

factored as the product of two binomials.

The first term in each binomial will be a factor of the w².

Since w² factors a w · w, we use a w as our first term.

For the last terms, we use factors of 42 that add

to 13 and these factors are +7 and +6.

So we have (w + 7)(w + 6) = 0.

So either w + 7 = 0 or w + 6 = 0.

Solving for w in each equation, we find that our solution set is {-7, -6}.

MANUFACTURING. The number of cars built varies
directly as the number of hours the production line
operates. What is the ratio of cars built to hours of
production? At this rate, how many cars can they
build in 5 hours?

Answers

Answer:

60 cars per hour

Step-by-step explanation:

Answer fast!!!!!!!!!!!!!!

Answers

this is the answer 0.7
decimal form is 0.7, hope this helps

An 8-pack of toy cars costs $5.97. What is the unit price, rounded to the nearest cent? ​

Answers

Answer:

$0.75 per toy car

Step-by-step explanation:

Divide 5.97 by 8

5.975/8=0.746875

Now round to the nearest cent which is the hundredths place

0.75

O.75
PLEASE MARK ME BRAINLEST

7/12
Which expression is equivalent to this fraction?

Answers

Answer:

12/7

Step-by-step explanation:

yes ! cd

help me ASAP!!!!! Please

Answers

Answer:

Equation: [tex]4^2+b^2=17^2[/tex]

can also be simplified to 16 + b^2 = 289 or b^2 = 273

Katie answered 2/3 of a 15 problem math correctly. How many questions did Katie answer incorrectly?

Answers

2/3 of 15 is 10:)
so i believe she got 5 incorrect

Answer fast!!!!!!!!!

Answers

Answer:

$0.52 = 0.52

Step-by-step explanation:

I think so.....

Please help ASAP thank you

Answers

Answer:

the origin is point (0,0) where the two lines meet

It's not in a quadrant

The horizontal line (----) is the x-axis and the vertical line ( | ) is the y- axis

these split the graph into 4 parts, called quadrants.

They're usually labelled in roman numerals (I, II, III, IV)

Quadrant I is the top right

they're labelled counter-clockwise from there so

Quadrant II is the top left

Quadrant III is the bottom left and

Quadrant IV is the bottom right

can someone help me pls );

Answers

Answer:

Hope it helps you,

Step-by-step explanation:

As the figure can be split in to 3 geometric figure,

Rectangle , Triangle and Semi circle ,

So first find the area of these figures then add up them ,

Area of rectangle = Length * width

Length = 20m m  and  width  = 14 mm

hence

Area of rectangle = 20*14  = 280 mm^2

Now ,

Are of  Circle  =  [tex]\\ \pi *d^{2} /4[/tex]

Then Area of semi circle = [tex]\\ \pi *d^{2} /8[/tex]

Hence we have d= 20mm

Putt in semi circle formula we get,

Area of Semi Circle= (3.14)*400/8  = 157 mm^2

Now area of triangle = 1/2 * length*width

length =32-20 = 12 mm

width = 14 mm

putt in the formula we get ,

Area of triangle = 1/2*12*14 = 84 mm^2

Now add these 3 Areas to get total Area,

Total Area = 84+157+280  = 521 mm^2

2/3 - 1/3 what the difference

Answers

Answer:

2/3 begins w a 2 and 1/3 begins w a 1. thats the difference.. hope this helped :)

Step-by-step explanation:

Answer:

.3333333

Step-by-step explanation:

because u have to math ight

Pls helpppppppppppppp​

Answers

Answer:

No

Step-by-step explanation:

Test it:

8x + 16y ≤ 4: does (2,9) work?

8(2) + 16(9) ≤ 4

16 + 144 ≤ 4

160 ≤ 4

160 is not smaller or equal to 4, so the point (2,9) does not satisfy the inequality.

What is two thing you like about math

Answers

Answer:

1. Math encourages curiosity and questions.

2. Math can save you money. ...

HIIIOO can someone please help me! I miss class and I don’t know what we learned about❤️

Answers

Answer:

The answer is C

Step-by-step explanation:

I got this by these steps:

1. Since you have the transversal FH you know that H is going to equal 180

2. So all you do know is subtract 180-82

3. You get 98

4. M<FHJ is 98

Hope that helps

Answer:

=28

Step-by-step explanation:

since its made of two triangles, you can calculate one of the triangles and multiply by two

the degrees of a triangle is 180 degrees

70+82= 152

180-152= 28

can i get brainiest plsss

Solve the following proportion for x.

X/13 = 17/7

Round your answer to the nearest tenth.

Answers

Answer:

31.6

Step-by-step explanation:

x / 13 = 17 / 7

7x = 221

x = 221 / 7

x = ~31.6

Please help! Im failing math Rn! Please help!

Answers

Answer:

rickrolled.

Step-by-step explanation:

¯\_(ツ)_/¯

you won't learn by asking others. do it yourself.

Answer:

K

Step-by-step explanation:

which quadrilateral makes this statement true? Quadrilateral ABCD

Answers

Answer:

A.

Step-by-step explanation:

Help!! will give brainiest! please no joke answers this is due by midnight

Answers

1. (1,3)
2.6,9,15 (top row)
1,2,4 (bottom row)
3. (1,3), (2,6), (3,9), (4,12),(5,15)
4. Edeena walks 6 miles in 2 hours.
hope this helps
1 -
(1,3)

2 -
Top of chart - 3,6,9,12,15
Bottom of chart - 1,2,3,4,5

3 -
(1,3) (2,6) (3,9) (4,12) (5,15)

4 -
(The picture)

5 - Sadly not sure about this one

If there are 17 teachers, how many students are there?

Answers

Answer:

is there anymore to that question

Step-by-step explanation:

Which equation represents a line that is perpendicular to line PQ?
10
U
-
.
- 10
-8
-6
-2
-60
10
2
4
on
8
-10
OA y = 3s - 2
OB. y = 3+ + 4
OC y = -5 -5
= -33 +6
o
D.

Answers

The answer is B.
PQ’s equation is y = 3x - 17 therefore B is perpendicular because 3 x 1/3 = -1

suppose that 23 inches of wire cost 69 cents at the same rate, how much in cents will 45 inches of wire cost

Answers

Answer:

pppop

Step-by-step explanation:

the answer is $1.34 I don’t know how to explain it

ILL GIVE BRAINLIEST FOR FIRST ANSWER!
Divide.

12÷18

Answers

Answer:

0

Step-by-step explanation:

06:20+35min=

06:23+ _ min=07:00

Answers

Answer:

27 min i think

Step-by-step explanation:

Answer: 9:35

Step-by-step explanation:

i think that's the right answer

Similar polygons have corresponding sides that are proportional and corresponding angles that are -
A congruent
B parallel
C similar
D proportional​

Answers

A. congruent

hope this helped <33
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