X - 3y = 6 and x - 3y = 9

Answer:

8

Step-by-step explanation:

You always start with the equasions in parenthesis. 3-1 is 2 and 8 divided by 2 is 4. Then you can move on to the next part of the eqasion. You start by subtracting 2 from 5 and then multiplying that by 2.then you add up the answers and you gat 8.

Answer:

Step-by-step explanation:

2a-7+15-5a

2a-5a-7+15

-3a+8

The expression which is equivalent to (2a - 7) + 5(3 - a) would be; -3a+8

Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

We have been given an expression as;

(2a - 7) + 5(3 - a)

Therefore, solving it further;

2a-7+15-5a

Combine the like terms;

2a-5a-7+15

Then we get;

-3a+8

Hence, the expression which is equivalent to (2a - 7) + 5(3 - a) would be; -3a+8

To know more about an expression follow;

brainly.com/question/19876186

#SPJ2

Answer:

A x<7/12 hope this helps

Answer:

30

Step-by-step explanation:

I think that's the answer

Answer: Opposite sides are congruent (AB = DC).

Opposite angels are congruent (D = B).

Consecutive angles are supplementary (A + D = 180°).

If one angle is right, then all angles are right.

The diagonals of a parallelogram bisect each other.

Each diagonal of a parallelogram separates it into two congruent triangles.

these are all the choices lol

Step-by-step explanation: Brainliest pls

Answer:

Step-by-step explanation:

Properties of parallelogram:

1) opposite sides are equal and parallel.

2) opposite angles are equal.

3) diagonals bisect each other.

Answer: 4/21

Step-by-step explanation: first convert it to an improper fraction, which would be 21/4

reciprocal means flip the fraction so it’s 4/21

Answer:

--> (-7)+3 = -4

--> (-5) +1=-4

-->(-3)+(-1)=-4

Answer:

(x+3)x(x-2)

Step-by-step explanation:

Answer:

See below

Step-by-step explanation:

DVD's sold:

Blu-rays sold:

Solving the system we get the number of month t when the disks sold are equal:

Answer:

8.2

Step-by-step explanation:

509.056/62.08

Answer:

3^2

Step-by-step explanation:

You add the exponents when you multiply

Then you subtract them since you divided them.

Answer:

9

Step-by-step explanation:

3^8=6561

3^4=81

3^2=9

3^8=6561

so... 6561*81/9*6561 equals nine so your answer is 9.

Answer:

No Idea I'm On Schoology

Step-by-step explanation:

Answer: $30 and 1 cent more

$60.50 - $30.50 = $30

0.12 - 0.11 = 0.01

I hope this helps.

Answer:

# of sides [tex]{}[/tex]  Interior               One Interior Angle  Exterior           One

           [tex]{}[/tex]        Angle Sum                                          Angle Sum     Exterior Angle

14   [tex]{}[/tex]              2,160°                 154.3°                            360°           25.714°    

24    [tex]{}[/tex]            3,960°                165°                                360°            15°

8    [tex]{}[/tex]               1,080                 135°                                360°            45°

30    [tex]{}[/tex]            5,040                 168°                                360°            12°

12    [tex]{}[/tex]             1,800                  150°                                360°            30°

Step-by-step explanation:

Please find attached the table of values calculated with Microsoft Excel

From the given table, we have the formula for the following parameters;

Number of sides = n

Interior Angle Sum = 180×(n - 2)

Measure of ONE Interior = 180×(n - 2)/n        

Angle (regular polygon)  

Exterior Angle Sum = 360°

Measure of ONE Exterior = 360°/n

Angle (regular polygon)

1) When n = 14, we have;

The interior Angle Sum = 180×(14 - 2) = 2,160°

The measure of one Interior angle (regular polygon) ;  180×(14 - 2)/14 ≈ 154.3°

The exterior angle sum = 360°

The measure of one exterior angle (regular polygon) = 360°/14 ≈ 25.714°

2) When n = 24, we have;

The interior Angle Sum = 180×(24 - 2) = 3,960°

The measure of one interior angle (regular polygon);  180×(24 - 2)/24 = 165°

The exterior angle sum = 360°

The measure of one exterior angle (regular polygon) = 360°/24 = 15°

3) When the interior angle sum = 180×(n - 2) = 1,080°, we have;

n = 1,080°/180° + 2 = 8

n = 8

The measure of one interior angle (regular polygon);  180×(8 - 2)/8 = 135°

The exterior angle sum = 360°

The measure of one exterior angle (regular polygon) = 360°/8 = 45°

4) When the interior angle sum = 180×(n - 2) = 5,040°

n = 5,040°/180° + 2 = 30

n = 30

The measure of one interior angle (regular polygon);  180×(30 - 2)/30 = 168°

The exterior angle sum = 360°

The measure of one exterior angle (regular polygon) = 360°/30 = 12°

5) When the measure of one interior angle (regular polygon), 180×(n - 2)/n = 150°, we have;

180°·n - 2×180° - 150°·n = 0

30°·n = 360°

n = 360°/30° = 12

n = 12

The exterior angle sum = 360°

The measure of one exterior angle (regular polygon) = 360°/12 = 30°

Answer: It is the None of them. If you see, one of the lines is Dotted, and one is solid. So, the Solid has either has ≤ or ≥ in it's equation. If the second option, and in the second option, the second equation has one of those signs, it would be correct, but it doesn't, so it's none of the above. I hope this didn't confuse you, and Happy Holidays! :)

Answer:

I believe 2.

z/8 and 3*5

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

z is a term -3 is a term and 5 is a term

Answer:

2nd option

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

Notice how it goes down one unit and right one unit. Thats how you get the slope (-x) and then then the +9 is the intercept of the y-axis which you can see is where the graph is starting here.

Answer:

-14

Step-by-step explanation:

Answer:

whats the question??

Step-by-step explanation:

Answer: For time t ≥ 0 hours, let r(t) = 120 1 − e−10t2 represent the speed, in kilometers per hour, at which a ()

car travels along a straight road. The number of liters of gasoline used by the car to travel x kilometers is −x 2

modeled by g(x) = 0.05x 1 − e . ()

(a) How many kilometers does the car travel during the first 2 hours?

(b) Find the rate of change with respect to time of the number of liters of gasoline used by the car when

t = 2 hours. Indicate units of measure.

(c) How many liters of gasoline have been used by the car when it reaches a speed of 80 kilometers per

  (a)

(b)

hour?

∫ 2 r (t ) dt = 206.370 kilometers 0

dg dg dx dx dt=dx⋅dt; dt=r(t)

2 : {1 : integral 1 : answer

3:{2:useschainrule

1 : answer with units

   dg dt

t=2

dg

= dx ⋅r(2)

x=206.370

= (0.050)(120) = 6 liters hour

    (c)

Let T be the time at which the car’s speed reaches 80 kilometers per hour.

Then, r(T ) = 80 or T = 0.331453 hours. At time T, the car has gone

x(T ) = ∫ T r (t ) dt = 10.794097 kilometers 0

and has consumed g(x(T )) = 0.537 liters of gasoline.

Answer:

the third one

Step-by-step explanation:

it's the third one because it touches most of the points

btw can you please mark me brainliest :D

Answer:

The Answer is the bottom one

Answer:

5/2

Step-by-step explanation:

(5/8) / (1/4) = 5/8 times 4

= 20/8 = 10/4 = 5/2

Answer:

5/2

Step-by-step explanation:

[tex]\frac{5}{8} *\frac{4}{1} =\frac{5}{2}[/tex] because you have to multiply by it's inverse

Answer:

The answer is "1:2"

Step-by-step explanation:

Let 96 car sales are X and 96 truck sales are Y  And income from 97 cars is 0.89X, income from 97 trucks is 1.07Y

[tex]\to \frac{(0.89X+1.07Y)}{(X+Y)}=1.01\\\\\frac{X}{Y}=?\\\\\to \frac{(0.89X+1.07Y)}{(X+Y)}\ \ \text{Divide by Y and get}\ \ \frac{( \frac{0.89X}{Y}+1.07)}{(\frac{X}{Y}+1)} =1.01\\\\[/tex]

Then

[tex]\to \frac{X}{Y}=1:2[/tex]

Answer:

                      10^6*10000=10,000,000,000

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

5(a+3)=40

5a+15=40

5a+15-15=40-15

5a=25

a=5

Answer:

At 3.44 seconds, the penny is at a height of 300 meters above the ground.

Step-by-step explanation:

Basically, we have to solve an equation here:

[tex]-4.9t^{2} + 358 = 300[/tex]

Hence,

[tex]-4.9t^{2} = 300 - 358[/tex]

[tex]t^{2} = \frac{-58}{-4.9}[/tex]

[tex]t = 3.44[/tex]

Hence, at 3.44 seconds, the penny is at a height of 300 meters above the ground.

Hope this helped!

Answer:

Step-by-step explanation:

i think the last number 2.50 is wrong, maybe is 2.4

total cost= 0.30 x number of miles

for the first 0.30*2=0.60

second 0.30*4=1.20

and so on

Answer:

.60 ÷ 2 = 0.3

1.20 ÷ 4 = 0.3

1.80 ÷ 6 = 0.3

2.50 ÷ 8 = 0.3125 so round it, and it equals 0.3

So are equation would be y ÷ x = 0.3

Answer:

600/(12*60)=0.83 per minute