Solve the system of equations by the substitution method

Solve The System Of Equations By The Substitution Method

Answers

Answer 1

Answer:

2x+4y=8 => y= -1/2x+2x+(10(-1/2x+2))=36 -5x+x+20=36 -4x=16x=-4 x=-4 y= 0I do exams and quizzes if your interested

Related Questions

Find the length of a
Help plz ASAP

Answers

Answer:

Hey there!

Your answer is c)

Answer:

2√5

Step-by-step explanation:

The triangle that's shown on the page is a special isosceles right triangle with angle measures of 45° - 45° - 90°

Since one of the side length that sees 45° angle measure is 2√5 the other also has to be equal to this value so the answer is 2√5

I have 108$
If a pc costs 1,481$
And I earn 15$ a week
How long will it take until I get pc? (Please help!)

Answers

Step-by-step explanation:

$1481 - $108 = $1,373 still to needed to purchase PC

$1,373/ $15 = 91.533...

It will take 92 weeks.

92 weeks because the PC costs 1481 but you already have 108 is you subtract and after that the answer you get you divide it by 15 because that is how much money you make a week and it will show as a decimal so we round up

-f(3)
Function for algebra

Answers

Answer:

-3f

Step-by-step explanation:

i hope this helps

Over 5 days, Rashid jogged 6.5 miles, 5 miles, 2 miles, 2 miles, and 4.5 miles. Find the mean distance that Rashid jogged

Answers

Answer:

4miles

Step-by-step explanation:

mean = (6.5+5+2+2+4.5)/5 = 20/5 = 4

Becky roller skated 4/6 of a mile on Wednesday and 2/8 of a mile on Friday. How far did Becky roller skate in all?

Answers

Answer:

3/4

Step-by-step explanation:

4/6 + 2/8 =

x 8     x6

24/48 + 12/48 = 36/48 = 3/4

8x^3 – 144x^2y + _____xy^2 − _____ y^3. how to solve this problem , i need a help assap . Plz explanation

Answers

I suppose your teacher want you to make a (a-b)^3 formula

Answer:

8 x^3 - 144 x^2 y + 864 x y^2 - 1728 y

Step-by-step explanation:

What is the value of x?
3
10
2y + 4
04
O 6
10 - 2x
08

Answers

Answer:

4

Step-by-step explanation:

We know that oppostie sides of a rectange have to be equal

therefore

18=10+2x

solve for x

8=2x

x=4

Answer:

The value of x is 4

Step-by-step explanation:

For a given rectangle

Lenght (l) = 2y = 10

Breadth (b) = 10 + 2x = 18

Here,

2y = 10 ...(1)

10 + 2x = 18 ...(2)

Now, For x

10 + 2x = 18

2x = 18 - 10

2x = 8

x = 8/2

x = 4

Thus, The value of x is 4

-TheUnknownScientist

After eating at the restaurant, Benny, Dan, and Mike decided to divide the bill evenly. If each person paid 47 dollars, what was the total of the bill ? What equation should be used? (write the equation followed by the answer)

Answers

The total of the bill is $141 because 47 x 3 = 141.

What % is 2000 from 40,000

Answers

Answer:

5%

Step-by-step explanation:

2000/40000 = 0.05

All you do is divide both numbers and you'll get the decimal form which in this case is 0.05 which means 5%.

Answer:

5%

Step-by-step explanation:

2000/40000 x 100 = 5%

Question 1 of 10
Which of the following best describes the slope of the line below?
O A. Negative
O B. Zero
O C. Undefined
O D. Positive

Answers

Answer:

C underfined

Step-by-step explanation:

I just took the test

An arborist examine trees in an orchard to see if they were infected with a virus out of 450 trees 56% had the virus how many trees were infected with the virus ​

Answers

Answer:

252 trees

Step-by-step explanation:

450 trees total

56% are infected

450 * .56 = 252 trees

A principal of $480 earns $108 interest in 5 years . what rate of interest was being paid?​

Answers

Answer:

4.5%

Step-by-step explanation:

Solving our equation

r = 108 / ( 480 × 5 ) = 0.045

r = 0.045

converting r decimal to a percentage

R = 0.045 * 100 = 4.5%/year

The interest rate required to

accumulate simple interest of $ 108.00

from a principal of $ 480.00

over 5 years is 4.5% per year.

round 14.561 to two decimal places

Answers

Answer:

round 14.561 to two decimal places=15

It’s a quadrilateral parallelogram. Solve for x

Answers

4 sided shapes have internal angles that MUST add up to 360 degrees, so add all four angles to get 360 (opposite angles are equal) so:
8x + 19 + 8x + 19 + 21x - 13 + 21x - 13 = 360
Collect like terms so
58x + 12 = 360
58x = 348
x = 6

What is the distance from point (6, -10) to point (6, 3)? ​

Answers

Answer:

13

Step-by-step explanation:

CAN SOMEONE HELP ME WITH THIS ONE !

Answers

Answer:

5/8 = 0.625

Step-by-step explanation:

I have attached a picture of me solving the steps. Hope this helps, thank you !!

Find the measure of each angle indicated. Round to the nearest tenth.

Answers

Answer:

theta = 22.6 degrees

Step-by-step explanation:

Here, we want to find the value of theta

To do this , we use the appropriate trigonometric identity

Let us identify the given sides of the triangle

we have the hypotenuse, which is the longest side of the triangle, given as 13 and the third side called the adjacent, given as 12

The trigonometric identity that relates the hypotenuse to the adjacent is the cosine

Mathematically;

cosine of an angle is the ratio of the adjacent to the hypotenuse

Thus, we have it that;

cos theta = 12/13

theta = arc(cos) 12/13

theta= 22.6

The ordered pair D(0, –5) is translated 2 units left and 6 units up. The translation notation which describe this translation is ( x - 2 , y - 6 )

Answers

Answer:

Try (x+8) and the other wons

Step-by-step explanation:

What is the y-coordinate of the solution to the system of equations? 5x-y=25 4x+3y=1

Answers

Answer:

The y-coordinate of the solution is thus -5.

Step-by-step explanation:

Rewrite 5x-y=25 4x+3y=1

in a column:

5x-y=25

4x+3y=1

If we want to find the y-coordinate of the solution, we need to eliminate x.  Solving the second equation for 4x yieds 4x = 1 - 3y, or

x = (1 - 3y)/4.

If this is inserted into 5x - y = 12, we get:

5(1 - 3y)/4 - y = 25, or (multiplying all terms by 4 to eliminate fractions):

5 - 15y - 4y = 100, or

-19y = 95, which yields y = -5

The y-coordinate of the solution is thus -5.

A boxer punches a sheet of paper in midair and brings it from rest up to a speed of 20m/s in 0.044 S

Answers

Complete Question:

A boxer punches a sheet of paper in midair and brings it from rest up to a speed of 20m/s in 0.044 Seconds.

a. what acceleration is imparted to the paper?

b. if the mass of the paper is 0.003 kg, what force does the boxer exert on it?

c. how much force does the paper exert on the boxer?

Answer:

a. Acceleration = 454.55m/s².

b. Force = 1.36N

c. Force = -1.36N

Step-by-step explanation:

Given the following data;

Final velocity = 20m/s

Time = 0.044 seconds.

Since the paper is at rest, we know that it's initial velocity is equal to 0m/s.

a. To find acceleration;

Mathematically, acceleration is given by the equation;

[tex]Acceleration (a) = \frac{final \; velocity - initial \; velocity}{time}[/tex]

Substituting into the equation, we have;

[tex]a = \frac{20 - 0}{0.044}[/tex]

[tex]a = \frac{20}{0.044}[/tex]

Acceleration = 454.55m/s²

b. To find the force exerted by the boxer;

Mass = 0.003kg

Force = mass * acceleration

Force = 0.003 * 454.55

Force = 1.36N

c. To find the force exerted by the paper;

According to Newton's third law of motion which states that, for every action there is an equal and opposite reaction. Therefore, the paper exerts an equal but opposite force on the boxer.

Force = -1.36N

An angle measures 150°. What is the measure of its supplement?

Answers

Answer:

The supplement is = 180-150 i.e30

Step-by-step explanation:

Let the another Angle be x then

x + 150° = 180° {being supplementary angles }

x = 180° - 150°

x = 30°

Hope it will help :)

Simplify the expression -2 (x + 4 + 5y).

Answers

Answer:

-2x-10y-8

Step-by-step explanation:

Rearange terms

-2(x+4+5y)

-2(x+5y+4)

Distribute

whats does espanol mean

Answers

I believe it means Spanish.

Answer:

Spanish.

Step-by-step explanation:

It is the language Spanish but the word is in spanish hahahahahah.

Helpppppppp plssssssssssssss

Answers

Answer:

its the first one

Step-by-step explanation:

if the fractions have the same denominator, all you have to do is add the numerators across.

Answer:

A

Step-by-step explanation:

Slow down, take a breath.

All of the fractions have the denominator of 12 so you dont need to worry about finding a common denominator.

this is simple addition:

1+5+5=11, simple as that

i hope this helps u!

remember to stop and think,

pls give thx and brainliest

Pleaseee find the measurement of angle F! Will mark Brianliest !!!!!!!!!!!!!

Answers

Answer:

f=131

Step-by-step explanation:

Write down in terms of n, an expression for the nth term
of the following sequences:
a) 12 10 8 6 4
b) 25 20 15 10 5

Answers

Answer:

In bold below.

Step-by-step explanation:

a) 12 10 8 6 4

This is an arithmetic sequence with common difference -2.

nth term = a1 + (n - 1)d

= 12 + (n - 1)-2

= 12  -2n + 2

= -2n + 14.

b) 25 20 15 10 5

This is an arithmetic sequence with common difference -5.

nth term = a1 + (n - 1)d

= 25 + (n - 1)-5

= 25  - 5n + 5

= -5n + 30.

you estimate a lion weighs 250 pounds. the actual weight of the lion is 320 pounds. find the percent error. round your answer to the nearest tenth of a percent.​

Answers

Answer:

21.9%

Step-by-step explanation:

Percent error = amount of error/actual amount

320 - 250 = 70

70/320 (division) = 0.21875

percent = 21.875%

Rounding to nearest tenth = 21.9%

Your answer should be 21.9%, so I hope this helps!

Answer:

22%

Step-by-step explanation:

Graph the line y = x + 6.

To graph a line, plot any two points on the line.

Answers

Your Graph would look like this

Step-by-step explanation:

i chose the points -6,0 and 6,0

Find x

I'm struggling plz help

Answers

Step-by-step explanation:

the right side of the diagram

9^2 + x^2 = 24^2

81 + x^2 = 576

x^2 = 576 + 81

x^2 = 657

x=√657

the left side of the diagram

9^2 + x^2 = 24^2

81 + x^2 = 576

x^2 = 576 + 81

x^2 = 657

x=√657

tim bought all of the 2 3 over 4 lb packages for a party


How many pounds of meat fid tim buy?

Answers

Answer: he bought 1 and 1/2 pounds of meat. (also could be written as 1.5 pounds)

Step-by-step explanation:

We know that Tim bought all of the two 3/4 lb packages for a party.

Then he bought 2 packages. Such that each package has  3/4 lb meat.

Then the total amount of meat that Tim has is equal to 2 times the amount of meat in each package, this is:

Total meat = 2*(3/4 lb) = (6/4 lb)

and we can write 6 = 4 + 2

then:

Total meat =  6/4  lb = (4 + 2)/4  lb = (4/4 + 2/4) lb = (1 + 1/2) lb

So he bought 1 and 1/2 pounds of meat. (also could be written as 1.5 pounds)

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