3(-4y+5)-8(-2y-4) can be written in the form (ay+b) by following the following steps:

(Step 1.) distributive property: -12y+15+16y+32

(Step 2) rearranging terms: -12y+16y+15+32

(Step 3) combining like terms: 4y+47

Which step was not done correctly?

Answer:

x = 7

y = 11

Step-by-step explanation:

Given the system;

y = 2x - 3

x + y = 18

1. Approach

The easiest way to solve this system of equations is to solve the second equation for the variable (y). Then add the systems, use algebra to solve for the value of (x), then substitute that value back into one of the original equations to solve for the value of (y). Another name for the method in use is the method of elimination, this is when a [erspm manipulates one of the equations in a system of the equation such that when they add the equations, one of the variables eliminatates. Thus, they can solve for the other variable and the backsolve for the value of the unknown variable.

2. Solve one of the equations for a variable

Manipulate the system such that each equation is solved for the same variable,

x + y = 18

Inverse operations,

x + y = 18

-18        -18

x + y - 18 = 0

   -y         -y

x - 18 = -y

3. Use elimination

Now substitute this back into the original system,

y = 2x - 3

-y = x - 18

Add the systems,

y = 2x - 3

-y = x - 18

_________

0 = 3x - 21

Inverse operations,

0 = 3x - 21

+21       +21

21 = 3x

/3    /3

7 = x

4. Find the value of the unknown variable

Backsovle to find the value of (y),

x + y = 18

Substitute,

7 + y = 18

Inverse operations,

7 + y = 18

-7        -7

y = 11

Answer:

X=3 Y=15

Step-by-step explanation: First you need to use the problem 18/2=x to find the value of x. Now to find the value of y, you need to subtract 3 from 18.  Then you solve

15=2(9)-3 15+3=18

Answer:

8 Djembe Drums

Step-by-step explanation:

(maracas) 12x14=168

(claves) 6x5=30

30+168=198

198-326=128

128/16

Answer:

Mathematics at Louisiana State University for their support in the ... Lesson 1: Positive and Negative Numbers on the Number Line—Opposite ... from Grade 5 of plotting points in the first quadrant and transition to locating ... Find and position integers and other rational numbers on a horizontal or ... tomorrow's water level.

Step-by-step explanation:

Answer:

I dont know about this one

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Anything greater than 12 will make the inequality correct, for examples

Anything less than 12: 7 - 5 = 2 > 7. INVALID

If x = 12: 12 - 5 = 7 > 7. INVALID

Anything greater than 12: 16 - 5 = 11 > 7. VALID

Answer:

B is the answer

Step-by-step explanation:

Answer:

2/6

Step-by-step explanation:

4/12=x/6

4/12 simplified = 2/6

2/6x2= 4/12

Answer:

2/6

Step-by-step explanation:

12/2=6

4/2=2

Answer:

A) 24 - 3p

Step-by-step explanation:

Distribute 6 through parenthesis

24 - 12p + 9p

then collect like terms

24 - 3p

Answer:

the cost of 20 is 96 dollars

the cost of 40 is 120 dollars

the cost of 60 is 288

Step-by-step explanation:

Answer:

the cost of 20 is 96 dollars

the cost of 40 is 120 dollars

the cost of 60 is 288

:3 - Sub to me on yt Sarcrsm I will be uploading daily

Step-by-step explanation:

Answer:

The answer is- 40

Step-by-step explanation:

( :

The area of the pentagon represented here is 40 units².

Area of a two dimensional shape is the total region which is bounded by the object's shape.

Given that the coordinates of the vertices of the pentagon given are A(0, 0), B(3, 5), C(3, 8), D(8, 5), and E(8, 0).

We have to find the area.

This pentagon can be divided in to triangle CBD and trapezium ABDE.

Find the area of each to find the total area of the pentagon.

Area of ΔCBD = [tex]\frac{1}{2}[/tex] × BD × CB

Using the distance formula,

BD = [tex]\sqrt{(8-3)^2+(5-5)^2}[/tex] = 5

CB = [tex]\sqrt{(3-3)^2+(5-8)^2}[/tex] = 3

Area of ΔCBD = [tex]\frac{1}{2}[/tex] × 5 × 3 = 7.5

Area of trapezium ABDE = [tex]\frac{1}{2}[/tex] × (AE + BD) × DE

Using the distance formula,

AE = 8, BD = 5 and DE = 5

Area of trapezium ABDE = [tex]\frac{1}{2}[/tex] × (8 + 5)5 = 32.5

Total area of the pentagon = 7.5 + 32.5 = 40 units²

Hence the total area is 40 units².

Learn more about Area here :

https://brainly.com/question/22590672

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Answer:

5cm^3

Step-by-step explanation: please let me know if that wrong.

Answer:

x = -6

Step-by-step explanation:

1. always group the unknowns in this case, we 'bring' over the -2x to the right side so it becomes

-10 = 2x + 2x +14

2. Move 14 to the left side,

-10 - 14 = 2x + 2x

3. Carry out addition on both sides,

-24 = 4x

4. Simplify: since 24 is divisible by 4, so we divide 4 on both sides

-6 = x

Answer: x=-6.

Step-by-step explanation:

First, we need to choose an x side, and a non-x side. Let's choose the right side as the x side since it's coefficient of x is greater than that of the left side. So, we add 2x on each side to get rid of the x on the left side. Now, we have -10=4x+14. Next, we should subtract 14 from each side to get rid of the non-x terms on the right side. Now, we are left with -24=4x. Finally, we can divide by four on each side to get x=-6.

Answer:

the first one

Step-by-step explanation:

the reason this is because it is showing a linear graph and when it comes to correlation it has to be linear

The scatter plots shows the strongest correlation in graph A. Therefore, option A is the correct answer.

Scatter plots are used to observe and plot relationships between two numeric variables graphically with the help of dots. The dots in a scatter plot shows the values of individual data points.

A strong positive or negative correlation graph is where the line touches or is very close to every data point, and the line has a positive or negative slope.

From the graph A, we can see the points are closely aligned.

Therefore, option A is the correct answer.

To learn more about the scatter plot visit:

https://brainly.com/question/29231735.

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The answer is 36 feet.

Answer:

The cross section can be:

1. A circle

2. An ellipse

3. A parabola

4. A hyperbola

Step-by-step explanation:

Answer:

15-12s or -12s+15 (usually we put variables infront of constants bc it more formal, you dont have to tho)

Step-by-step explanation:

Answer: 15-12s

Step-by-step explanation:

Because the number (-3) is in front of the bracket that means that you have to times everything inside by it.

So,

-3×-5=15

-3×4s=-12s

So the answer would be 15-12s

Hope this helps :)

Answer:

Step-by-step explanation:

For problem 10:

1. AE/ED=AC/CB (Since triangle ABC is similar to triangle ADE, we can determine that the ratio of AE to ED is equal to the ratio of AC to CB)

2. AE/ED=(AE+EC)/CB (Rewrite AC as the sum of the lengths forming it; This is sometimes referred to as the Partition Postulate)

3. 9/x=(9+6)/10 (Substitute the given values into this equation)

4. x=6 (Use algebra to solve for x)

For problem 11:

1. AG/AB=AE/AD (Use the same strategy as step one in problem 10, since the rectangles are similar we can create this equation)

2. AG/(AG+GB)=AE/(AE+ED) (Rewrite sides as the some of their parts)

3. 14/(14+7)=18/(18+x) (Substitute given values)

4. x=9 (Solve for x)

lmk if there are mistakes in my explanation, hope this helps :)

Answer:

X=-160

Step-by-step explanation:

Answer:

-160

Step-by-step explaination:

-50 + 10 = -40

1/4 of what equals -40?

-160

So,

-160 x 1/4 = -40

-40 - 10 = -50

You are welcome for the answer, hope it helps, sorry if it doesn't or it is too late.

Answer:

1st Question:

m<1 = 90°

m<2= 79°

m<3= 101°

2nd Question:

m<1=97°

m<3=83°

m<6=83°

Step-by-step explanation:

1st Question :

m<1 is a right angle.

m<2 is 79° because of parallel line denote the same angle.

m<3 is 101° because 180°-79°=101°.( As we know sum of angles in a straight line = 18° degree. )

2nd question:

m<1 is 97° because sum of angles in a straight line = 180°

                    So, 180°-83°=97°

m<3 is 83° because sum of parallel sides are equal.

m<6 is 83° because sum of parallel sides are equal.

Answer:

m = 180 - 67 (angles in a straight line are supplementary)

m = 113° [option D]

Answer: B  I had a scene answer like that the correct answer is B

Answer:

Step-by-step explanation:

22xpie=

69.08

Answer:

b.cost of party

c=20f

Step-by-step explanation:

so we know the equation we have to use is c=20f

for part 2 we have to find out how much it's going to cost hank if 50 people attend his party;

so we know that 'c' is our unknown variable; now we write the equation filling in the 'blanks' with what we know-

c=20*50

now we multiply **remember that when you have a number and a letter right next to each other that they're being multiplied**

20*50

=1000

so hank will be spending $1000

good luck :)

hopefully, this helps

sorry i couldn't answer the last question

have a nice day !!

Answer:

2^-3

Step-by-step explanation:

Answer:

0.18% chance

Step-by-step explanation:

Total of 11 cards

So 2/11= 0.18..