You use substitution to solve a system of equations and, after simplifying the equations, end with an expression that says 0 = 4. What does that say about the the lines and about the number of solutions to the system?


Sample Response: Since the statement is false, there are no solutions to the system of equations. This also indicates that the lines are parallel.

Check all that you included in your response.
□ The equation is false.
□ False equations indicate no solution.
□ No solution indicates a system with parallel lines.

Hope this helps!

Answer:

320 pounds of 55% raisins trail mix

480 pounds of 30% raisins trail mix

Step-by-step explanation:

Sorry, I can’t write how I got the answer. We just did it in class and decided to help... (Btw, sorry if I’m too late)

The store manager mixed 320 pounds of 55% raisins trail mix and 480 pounds of 30% raisins trail mix.

Given that,

A store manager combines a trail mix that is 30% raisins with a trail mix that is 55% raisins.

He makes 800lb of trail mix that is 40% raisins.

We have to determine,

How many pounds of each trail mix does the manager use?

According to the question,

Let, x = pounds of trail mix 30% raisins

y = pounds of trail mix 55% raisins

The distributor wants to make 800 pounds of trail mix, thus:

x + y = 800  

The mix must be 40% raisings as a combination of x and y, thus:

30x + 55y = 40 × 800

30x + 55y = 32,000

Divided by 5 the equation

6x + 11y = 6400

Solving both the equation

[tex]x + y = 800\\\\x = 800 -y\\[/tex]

Substitute the value of x in equation 2,

[tex]6x + 11y = 6400\\\\6 (800-y) + 11y = 6400\\\\4800 - 6y +11y = 6400\\\\5y = 6400-4800\\\\5y = 1600\\\\y = \dfarc{1600}{5}\\\\y = 320[/tex]

Substitute the value of x in equation 1

[tex]x + y = 800\\\\x + - 800 -y\\\\x = 800-320\\\\x = 480[/tex]

Hence, The store manager mixed 320 pounds of 55% raisins trail mix and 480 pounds of 30% raisins trail mix.

For more details refer to the link;

https://brainly.com/question/3228027

Answer:

He added all the numbers as they were a decimal number, with the kilometers traveled by Bus and Car being 2 to the left than where it should have been.

How I found it:

Converting 7 and 2.3 into a decimal with the decimal place two to the left.

7 becomes 0.07

2.3 becomes 0.23

I added this to the kilometers traveled by train(which is 19.955km).

19.955km + 0.023 + 0.07 = 19.985

19.985 being the value for answer A.

Hope that helps :)

Answer:

60 miles per hour

Step-by-step explanation:

Unit Rate: A calculation regarding mph.

420 miles in 7 hours = 7/420

Flip the equation!

420/7

420/7 = 60

60 miles per hour

Answer: Answer:

5=1/3x-11

Step-by-step explanation:

Add eleven to each side to get 16=1/3x. Then multiply each side by three to get 48=x, so x=48.

Step-by-step explanation:

Answer:

C and D

Step-by-step explanation:

If you subtract 2.5 from 16.2 you would get 13.7 same for 19.25.It would then equal 16.75

Therefore C and D are correct :)

Answer:

It would cost about $2.38

Answer: click I don’t know this yet. It’s only diagnostics, so if you click ”I don’t know this yet” it will help you learn.

Step-by-step explanation:

Answer:

35 and 65

Step-by-step explanation:

Let the two numbers be x and y.

Thus

x + y = 100

and

x = 2y - 5

Now substitute for x in the first equation and get

2y - 5 + y = 100

3y - 5 = 100

3y = 105

y = 35 and since they add to 100,

x = 65

Answer:

x=51

Step-by-step explanation:

x+x-12=2x-12

90=2x-12

102=2x

x=51

Answer:

H

Step-by-step explanation:

Plug in values of x to see which get the same values of y

Answer:

Complete each statement.

To multiply a number by 1,000, move the decimal point three places to the right.

To multiply a number by 0.01, move the decimal point 2 places to the left.

Step-by-step explanation:

Answer:

10 7.2 inches long

Step-by-step explanation:

:)

Answer:

10 7.2 inches

Step-by-step explanation:

:( jk jk :)

Answer:

your right

Step-by-step explanation:

Answer:

1st question: 32 bikes

2nd question: im not sure maybe 15

Step-by-step explanation:

i think for number 6 the answer is 1 bottle for 3 people

for 7 i think the answer is 0.3 bottles for 1 painting

i think for 8 it's 1 flower per bulb

i think 9 is 1 bread for 4 flower

i think for 10 the answer is 1 bottle per 0.35 boxes

i'm not sure what you are doing but if im right that was easy

Answer:

30/9 is 3/cost

the cost is 9 divided by 10 which is .9

3/.9

Step-by-step explanation:

Answer:-3, 10

Step-by-step explanation:

Subtracting 30 from both sides gives x^2 - 7x - 30 = 0. The quadratic factors as

(x - 10)(x + 3) = 0, so the solutions are x = 10 and x = -3.

Instead of factoring, we also could have applied the quadratic formula with a = 1, b = -7, and c = -30:

The solutions to the equation x² - 7x = 30 are -3 and 10.

Solutions are the values of an equation where the values are substituted in the variables of the equation and make the equality in the equation true.

We have,

x² - 7x = 30

x² - 7x - 30 = 0

Middle-term factorization.

x² - (10 - 3)x - 30 = 0

x² - 10x + 3x - 30 = 0

x(x - 10) + 3(x - 10) = 0

(x + 3) (x - 10) = 0

x + 3 = 0

x = -3

x - 10 = 0

x = 10

Thus,

The solutions are -3 and 10.

Learn more about solutions of equations here:

https://brainly.com/question/545403

#SPJ2

Answer:

A) C

B) D

C) y=3x+5

Step-by-step explanation:

I think :)

Answer:

C.

Step-by-step explanation:

Look at the possibilities

Answer:

(6,9)

Step-by-step explanation:

3(2,3)

= (6,9)

Hope this helps plz hit the crown :D

Step-by-step explanation:

P = I / rt is the formula we're going to use.

P is the principle (which is what we're solving for)

I = the interest accrued over the specified amount of time (2 years)

r = the interest rate (6%)

t = the time specified (2 years)

Change the percent to a decimal. Place the decimal two places to the left to make 0.06.

P = 264 / 0.06(2)

P = 264 ÷ 0.12 = 2,200

Principal borrowed would be $2,200

Answer:

4x and 3

Step-by-step explanation:

because the first term contains a variable and the second term does not

Answer:    m=2.8

Step-by-step explanation:

You can reverse the equation and instead solve...

4-1.2 which equals 2.8.

Answer:

m = 2.8

Step-by-step explanation:

m+1.2=4

move all terms containing m to the left and all other terms to the right.  

+1m=+4-1.2

simplify left and right side of the equation.  

+1m=+2.8

divide both sides of the equation by 1 to get m.  

m=2.8

Answer:

area of a circle

= pi r square root

=3,14 x 5 x 5

=3,14 x 25

=78.5cm

2n question

= pi r square root

=3,14 x 7 x 7

=3,14 x 49

=153,86ft2

3rd question

C= pi d

C=3,14 x 10

C=31,4cm

4th question

C=pi d

C= 3,14 x 14

C=21,98ft

Step-by-step explanation:

Hope this helps!

Answer:

C

Step-by-step explanation:

since it is the slope form y = mx+b

b = y axis

so in order to go up you have to translate upwards

hope this helped ;)

Answer:

Line B, I believe.

Answer:

Take meh dog and give me yo cash and ill buy yo coool leg!

What is this? Is this like a meme or what?