Solve by Substitution.

x=3y+1
x=2y-1
Please explain step by step.
I give Brainliest

Answer:

28

Step-by-step explanation:

Prime factorization of 84 is 2^{2} × 3 × 7.

Prime factorization of 56 is 2^{3} × 7.

GCF = 2 × 2 × 7

       = 28

I hope it helps.

Answer:

23

Step-by-step explanation:

12-(9-2)+3*6

12-(7)+3*6

12-7+18

5+18

23

Answer:

6x^3 - 16x^2 - 14x + 24

Step-by-step explanation:

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

2 (3x + 4) = 6x + 8

(x^2 - 3x - x + 3) (6x + 8)

= 6x^3 + 8x^2 - 24x^2 - 32x + 18x + 24

= 6x^3 - 16x^2 - 14x + 24

Answer:

ahhhh early again ty

Step-by-step explanation:

Answer:

Thank you so much! :)

Step-by-step explanation:

Hello!

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15% = 15/100

The fraction can be reduced:

3/20

Hope it helps you!

~SparklingFlower :)

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Answer:

[tex]\frac{3}{20}[/tex]

Step-by-step explanation:

15%

= [tex]\frac{15}{100}[/tex] ( divide numerator/ denominator by 5 )

= [tex]\frac{3}{20}[/tex]

Answer:

-7x²-13x+2

Step-by-step explanation:

-7x²-14x+1x+2

Answer:

I'm not the best with math either but the order is PEMDAS

Step-by-step explanation:

P: parenthesis

E: exponits

M: mutiplication

D: division

A: addation

S: subtraction

This means you would do the problems in parenthesis () first then go down the list here

Answer:

Graph the line using the slope and y-intercept, or two points.

Slope:

4

y-intercept:

(

0

,

−

1

)

x

y

0

−

1

1

3

Step-by-step explanation:

Answer:

(yx-1)+(4-x)=4xy+4x-x

Answer

5.0/5

1  

Answer: below(=

Step-by-step explanation: Given that,

dimensions of wall = 8.3ft by 7.5ft

height of wall = 8.3

width of wall = 7.5

there are total 3 walls in a bedroom to be painted blue.

Formula to calculate area of one wall

Height x Width

Formula to calculate area of four walls

3 (Height x Width)

= 3( 8.3ft x 7.5ft)

= 3 (62.25 ft²)

= 186.75 ft²

So area Alyssa will paint = 186.75 ft²

Answer:

the probability of drawing a green marble is 4/25 (16% or 0.16)

Step-by-step explanation:

Total: 16+8+9+12+5= 50

# of green marbles: 8

Event G, such that a green marble is drawn:

P(G)= 8/50

= 4/25 (16% or 0.16)

Answer:

Step-by-step explanation:

Answer:

Step-by-step explanation:

okay so the equation is 3x - 12 = 78

add 12 on both sides

3x = 90

divide both sides by 3

x = 30

Answer:

The missing value (x) is 12.

Step-by-step explanation:

Given that there are two values already known, 78° and 78°, we can add them and get 156°.

Since a triangle has a total degree of 180°, we can do this:

180°-156° = 24°

So, now we have the missing angle and its equal to 24°.

what you now do is set 24°= 3x-12 to solve for x.

24°=3x-12

36=3x

/3

12=x

Answer:

-2

Step-by-step explanation:

From the graph, it appears that (0, 2) and (2, -2) are points on the line.  (Othere points will work, as well; you just need two points.)

Slope = (difference between the y coordinates) / (difference between the x coordinates)

One phrase to remember this is slope = "rise over run"  (vertical change divided by horizontal change from point to point).

Slope = (-2 - 2) / (2 - 0) = -4 / 2 = -2

The slope is -2.

Answer:

less than 55 minutes

Step-by-step explanation:

11 laps at 5 minutes per lap is 55 minutes.

Since she will run fewer than 11 laps, she will run less than 55 minutes.

Answer:

y=20x; see below

Step-by-step explanation:

140/7=20

y=20x

If she charges clients a constant rate. Then the rate will be $20 per hour.

The rate is the ratio of the amount of something to the unit.

For example - If the speed of the car is 20 km/h it means the car travels 20 km in one hour.

Algebra is the study of algebraic expressions, while logic is the manipulation of those concepts.

Sabrina has been strolling canines to bring in cash. This week she procured a sum of $140 throughout the span of 7 hours.

Assuming she charges clients a constant rate. Then the rate is calculated as,

Rate = $140 / 7

Rate = $20 per hour

If she charges clients a constant rate. Then the rate will be $20 per hour.

More about the rate link is given below.

https://brainly.com/question/14731228

#SPJ2

Answer:

The next  4 terms are -2.4, -8, - 13.6, 19.2.

Step-by-step explanation:

u1 = u0 - 5.6

= 3.2 - 5.6

= -2.4.

u2 = u1 - 5.6

= -2.4 - 5.6

= -8.

Answer: 25.89

Step-by-step explanation: first I do 796.65÷47 which gives us 16.95 and then I do 402.30÷45 which gives us 8.94 and then I add 8.94 and 16.95 together which is 25.89

Answer:

-13 -19

Step-by-step explanation:

5, -6 =-1 so if yiu continue you get the anwers

Answer:

x = -7/2

Step-by-step explanation:

-2(5x - 3) = 41

Distribute the -2 inside the parenthesis.

-10x + 6 = 41

Subtract 6 from both sides.

-10x = 35

Divide both sides by -10.

x = 35/-10

Simplify the fraction.

x = -7/2.

Proof:

-2(5x - 3) = 41

Substitute variable.

-2(5(-7/2) - 3) = 41

Multiply 5 and -7/2.

-2(-35/2 - 3) = 41

Turn 3 into a fraction with denominator 2.

-2(-35/2 - 6/2) = 41

Subtract 6/2 from -35/2.

-2(-41/2) = 41

Multiply -2 and -41/2.

41 = 41.

Answer:

o=54

Step-by-step explanation:

m=180-(78+22)

m= 80

O= 180-(80+24+22)

O=54

Answer:

P(3) = 0.2

Step-by-step explanation:

P(4) = 0.1

P(1) = 0.5

this leaves 1.0 - 0.6, or 0.4, to be split between the numbers 2 and 3

Step-by-step explanation:

67 + x = 90

x = 90 - 67

x = 23°

Option → A

__________

[tex] \: [/tex]

67° + x = 90°

x = 90° - 67°

x = 23° (A.)

Answer:

plz show the figure clearly

Answer:

The answer is A.

Step-by-step explanation:

X = 0

Therefore the answer is F(0)

Answer:

Y = -1/2 x

Step-by-step explanation:

To write the equation in slope intercept form

Y = mx + c

C is y-intercept

the graph is passing through centre. That means y-intercept is zero.

so C=0

To find m which is slope,

[tex] \frac{rise}{run} [/tex]

rise = 10

run= -20

[tex] \frac{10}{ - 20} \\ \frac{ - 1}{2} [/tex]

So

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

Answer: You didn’t give full explanations to the option bars, so I can’t really help. sorry

Step-by-step explanation:

Answer:

1/6

0.166666….

The “6” repeats.

:)

Answer:

1/6 = 0.1666..

the second digit repeats

1inch=12miles

31/2 inches=(31/2x12) miles

=(7/2x12) miles

=(7x6) miles

=42miles.