3. Andre and Elena are solving this system of equations:
y = 3x
y=9x – 30
- Andre's first step is to write: 3x = 9x - 30
- Elena's first step is to create a new system:
3y=9x
y = 9x - 30

Do you agree with either first step? Explain your reasoning.

I think that the functions would be anything that would function like a math equation! Like K and O

Answer:

.

Step-by-step explanation:

Answer:

4a+4

Step-by-step explanation:

12a+8-8a-4

4a+4

Answer:

4(a+1)

Step-by-step explanation:

Need to expand first

= 12a + 8 - 8a - 4

Group like terms

= 12a - 8a + 8 - 4

Solve

= 4a + 4

Can factorize

= 4(a + 1)

Answer:

Step-by-step explanation:

"A rectangular room measures 3.8 meters in length and 4.9 meters in width. Jana multiplies both numbers together. Which expression would be best for her to use to check the reasonableness of her decimal multiplication?"

given that

the length is 3.8m long and,

width is 4.9m wide

The expression for the area is

Area= length * width

Area= 3.8*4.9

Area= 18.62 m^2

Therefore the expression best for her to use to check the reasonableness of her decimal multiplication is the area which is  18.62 m^2

Answer:

bc you dont got nun right there but the question so i think 4 times 4 but

Step-by-step explanation:

Answer:

$12.00

Step-by-step explanation:

The cost of each ticket will be $18.

The quantity of anything is stated as though it were a fraction of a hundred. A quarter of 100 can be used to express the ratio. Per 100 is what the term percent signifies. The symbol ‘%’ is used to symbolize it.

The percentage is given as,

Percentage (P) = [Final value - Initial value] / Initial value x 100

Tristan and two of his friends purchased tickets to a school play. Tristan paid for all the tickets with a $50.00 bill and received $23.00 in change.

Then the cost of the ticket will be

Cost = ($50 - $23) / 2

Cost = $27

If Tristan used a coupon for 25% off. Then the original price for all tickets will be

Original cost = $27 / 0.75

Original cost = $36

Then the cost of each ticket will be

Cost of each ticket = $36 / 2

Cost of each ticket = $18

More about the percentage link is given below.

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Answer:

most fuel efficient is Jean's car....it gets 30 miles per gallon

Step-by-step explanation:

Jean's car :

(12 1/2) / (5/12) =

(25/2) / (5/12) =

25/2 * 12/5 =

150/5 =

30 miles per gallon

Miranda's car :

(20 5/7) / (5/7) =

(145/7) / (5/7) =

145/7 * 7/5 =

145/5 =

29 miles per gallon

Step-by-step explanation:

Ok, so in a standard equation, there can’t be any fractions, so you would have to multiply everything by 3, making the equation 3y+3=2(x-8) (p.s. don’t multiply the parentheses, leave the numbers in them alone for now). Then, you would go through with the equation process: 3y+3=2x-16. You move the 3 over to the right to make 3y=2x-19. Move the x to the left, -2x+3y=-19. But, there is a problem. The first term of this equation can’t be negative(yes, in standard form, x has to come first). So, you have to multiply everything by -1, resulting in the answer 2x-3y=19. I hope this helps!(The format for a standard form equation is: Ax+By=C).

Answer:

x = 1/2

Step-by-step explanation:

6x-3= 0       (add 3 to both sides)

    +3   +3

6x=3            (divide by 6 to isolate x)

/6   /6

3/6= 1/2       (simplify)

x=1/2

Answer:

True

In a chemical change, the molecules in the reactants interact to form new substances. In a physical change, like a state change or dissolving, no new substance is formed. Explain that another way to say that no atoms are created or destroyed in a chemical reaction is to say, “Mass is conserved.”

Step-by-step explanation:

Hope it helps :)

Have a good day/night

Brainliest pls?

Answer:

b

Step-by-step explanation:

Answer:

proved

Step-by-step explanation:

n/6 -3=10

n/6=10+3

n/6=13

n=13x6

n=78

I hope this is the answer you're looking for

its a if-then statment

Step-by-step explanation:

Answer:

29

Step-by-step explanation:

Answer:

29

Step-by-step explanation:

Answer:

x = 11

Step-by-step explanation:

4 ⋅ 11 + 4 = 48

angle A = 48°

angle B = 48°

Answer:

Step-by-step explanation:

[tex](8,-1) = (x_1,y_1)\\\\m = -\frac{3}{2}[/tex]

Substitute values into point-slope form

[tex]y-y_1=m(x-x_1)\\\\y -(-1)=-\frac{3}{2} (x -8)\\\\y+1 = -\frac{3}{2}x+12\\\\y = -\frac{3}{2}x +12-1\\\\y =-\frac{3}{2}x +11[/tex]

The equation of line passes through the point (8, -1) will be;

⇒ y = - 3/2x + 11

The equation of line in point-slope form passing through the points

(x₁ , y₁) and (x₂, y₂) with slope m is defined as;

⇒ y - y₁ = m (x - x₁)

Where, m = (y₂ - y₁) / (x₂ - x₁)

Given that;

The point on the line are (8, - 1).

And, The slope of the line is,

⇒ m = - 3/2

Now,

Since, The equation of line passes through the point (8, -1).

And, Slope of the line is,

⇒ m = - 3/2

Thus, The equation of line with slope - 3/2 is,

⇒ y - (-1) = - 3/2 (x - 8)

⇒ y + 1 = - 3/2 (x - 8)

⇒ y + 1 = - 3/2x + 12

⇒ y = - 3/2x + 12 - 1

⇒ y = - 3/2x + 11

Therefore, The equation of line passes through the point (8, -1) with slope - 3/2 is,

⇒ y = - 3/2x + 11

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Hi! 368.5468432 is IRRATIONAL. I hope this helps you! Good luck and have a great day/night. ❤️✨

Answer:

rational

Step-by-step explanation:

368.5468432

[tex]=\frac{3685468432}{10000000} \\=\frac{921467108}{2500000}\\ =\frac{230366777}{625000} \\[/tex]

which is of the form p/q,where p and q are integers.

Answer:

70

Step-by-step explanation:

[tex]180 - 120 = 60[/tex]

[tex]180 - 60 - 50 =70[/tex]

Answer:

Following are the solution to this question:

Step-by-step explanation:

For incentive A

The car value = 57000

Calculating debt[tex]= 57000 - 10000[/tex]

                            [tex]= 47000[/tex]

Calculating the debt value after incentive [tex]= 47000 - 5000[/tex]

                                                                    [tex]= 42000[/tex]

[tex]PMT = \frac{P(\frac{r}{n})}{(1 - (1 + (\frac{r}{n}))^(-nt))}[/tex]

         [tex]= \frac{42000 \times (\frac{6.06 \%}{12})}{(1-(1+(\frac{6.06 \%}{12}))^{(-12 \times 4)})}[/tex]

         [tex]= \frac{42000 \times (0.00505)}{(1-(1+(0.00505))^{(-48)})}\\\\= \frac{212.1}{(1-(1+(0.00505))^{(-48)})}\\\\=\frac{212.1}{-1.74}\\\\= - 121.89 \ \ or \ \ 121.89[/tex]

For incentive  B

The car value = 57000

Calculating the debt value [tex]= 57000 - 10000[/tex]

                                            [tex]= 47000[/tex]

Calculating the monthly payment =[tex]\frac{47000}{(12*4)}[/tex]

                                                        [tex]= \frac{47000}{(48)}\\\\= \frac{47000}{(48)}\\\\=979.166[/tex]

difference:

[tex]=121.89 - 979.166\\\\ = - 854.276[/tex]

Answer:

Connor's

Step-by-step explanation:

According to the slope formula, it is (y2 - y1)/(x2 - x1)

Connor uses the y-values first and put them on the numerator, and that is what you are meant to do, unlike, April. She puts the x-values on top and the y-values on the bottom.

Answer: y=2x-8

Step-by-step explanation:

Use the slope formula y2-y1/x2-x1. Plug the points in. You get 2 which is the m/slope. Then you plug that into y=Mx+b and then find the y isn’t with y=Mx+b and you get -8. Plug it all in and you get y= 2x-8

Answer:

y=2x-8

Step-by-step explanation:

6-0/7-4

6/3

x=2

4(-2)

y=-8

Answer:

2

Step-by-step explanation:

4x + 2 =4 => 4x = 2 => x = 0,5

if x =0,5 => 2x + 1 = 0,5.2 + 1 = 2

The values of "2x+1" will be "2".

The expression,

→ [tex]4x+2=4[/tex]

By subtracting "2" from both sides, we get

→ [tex]4x+2-2=4-2[/tex]

→             [tex]4x=2[/tex]

→               [tex]x = \frac{2}{4}[/tex]

→               [tex]x = 0.5[/tex]

By putting the value of "x" in the expression "2x+1", we get

→ [tex]2x+1 = 2(0.5)+1[/tex]

→            [tex]= 1+1[/tex]

→            [tex]= 2[/tex]    

Thus the above answer is right.

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Answer: D. 6sqrt3

Step-by-step explanation:

Factor them out

3sqrt3 + 3sqrt3 = 6sqrt3

Answer: A) -2m^3-m^2+4m+2

Answer: The triangles' corresponding angles are congruent, and their corresponding sides are proportional; therefore, the triangles are similar.

Step-by-step explanation:

If all the corresponding sides and angles of two triangles are congruent then, the two triangles are said to be congruent..

If the corresponding angles of two triangles are congruent and their corresponding sides are proportional then triangles are similar (not congruent).

Complete statement: The triangles' corresponding angles are congruent, and their corresponding sides are proportional; therefore, the triangles are similar.

Answer:

The triangles' corresponding angles are congruent, and their corresponding sides are proportional; therefore, the triangles are similar.

Answer:

2

Step-by-step explanation:

thanks for the points

Answer:

2

Step-by-step explanation:

1+1=2

Answer:

22 girls and 22 boy or I just don’t know

Step-by-step explanation:

Answer:

28 are girls.

Step-by-step explanation:

44/(4+7) = 4

4 * 7 =28

Answer:

Jackie will have 13 and Joanne would have 10 left

Step-by-step explanation: