— 3х – 4y = 2
—5 = 5x +5y
Systems of equations with substitution

Answers

Answer 1

Answer:Rewrite  

(

3

x

4

y

)

2

as  

(

3

x

4

y

)

(

3

x

4

y

)

.

(

3

x

4

y

)

(

3

x

4

y

)

Expand  

(

3

x

4

y

)

(

3

x

4

y

)

using the FOIL Method.

Tap for fewer steps...

Apply the distributive property.

3

x

(

3

x

4

y

)

4

y

(

3

x

4

y

)

Apply the distributive property.

3

x

(

3

x

)

+

3

x

(

4

y

)

4

y

(

3

x

4

y

)

Apply the distributive property.

3

x

(

3

x

)

+

3

x

(

4

y

)

4

y

(

3

x

)

4

y

(

4

y

)

Simplify and combine like terms

Simplify each term.

9

x

2

12

x

y

12

y

x

+

16

y

2

Subtract  

12

y

x

from  

12

x

y

.  

9

x

2

24

x

y

+

16

y

2

Step-by-step explanation:


Related Questions

Please hurryyyyyyyyyyyy

Answers

Answer:

(x^2+10)^2

Step-by-step explanation:

Answer:

hey! you could always use m athway or p hotomath for this (:

Which is the least common multiple of 8 and 16?​

Answers

Answer:

The awnser is 2

Step-by-step explanation:

Your answer would be 2

Beverly used 2.4 yards of ribbon on the border of a quilt. If each side used 0.6 yard of ribbon, how many sides did she use the ribbon on? Draw models to help you divide.

Answers

Answer: She used 4 sides.

Step-by-step explanation:

2.4 ÷ 0.6 = 4

Which of the following is equivalent to 5 • (7 • 4)?

Answers

Answer:

Its (5 x 7) x 4

Step-by-step explanation:

5 x (7 x 4)

5 x (28)

140

------------

(5 x 7) x 4

(35) x 4

140

I need help!!! I’ll mark you brainliest
This is timed!!

Answers

D. 19

put 3 inside g

4(3) = 12

put 12 inside f(x)

2(12) - 5 = 19

So the answer is 19

Answer:

f

(

g

(

x

)

)

Evaluate  

f

(

x

+

3

)

by substituting in the value of  

g

into  

f

.

f

(

x

+

3

)

=

2

(

x

+

3

)

1

Simplify each term.

Tap for more steps...

f

(

x

+

3

)

=

2

x

+

6

1

 

Subtract  

1

from  

6

.

f

(

x

+

3

)

=

2

x

+

5

Step-by-step explanation:

3z squared minus 6z if z = 5

Answers

Answer:

45

Step-by-step explanation:

Given

3z² - 6z ← substitute z = 5 into the expression

= 3(5)² - 6(5)

= 3(25) - 30

= 75 - 30

= 45

Answer:

Step-by-step explanation:

First, convert the z’s to numbers.

3(5) squared - 6(5)

do the squared first

3(25)-6(5)

multiply

75-30=45

Answer:45

Find the midpoint of AC is at -2 and C is at 3 on a number line

Answers

2c3 Because when you look at it when you look at the question if I do that and then you were at the AC is at the two and see is that the three on the number line then you would add that on and you’ll get your answer

The value of midpoint of AC will be 0.5.

What is Number line?

Number line is a horizontal line where numbers are marked at equal intervals one after another form smaller to greater.

Given that;

Point A is at - 2 and C is at 3 on the number line.

Now,

Since, Point A is at - 2 and C is at 3 on the number line.

Hence, The midpoint of AC = (- 2 + 3 ) / 2

                                           = 1/2

                                           = 0.5

Thus, The midpoint of AC = 0.5

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Winner-brainliest
Tell me the answer in rows
Pasta 1.
2 and so on

Answers

Answer:

Pizza 5 4 9

Pasta 1 5 6

Salad 3 2 5

Total 9 11 20

That’s right what the person said

The scale of a square map indicates that each inch on the map
corresponds to 5 miles. Write an expression that describes the area of
land shown on the map. If the map is 8 inches on one side, what is the
area of land shown on the map?

Answers

Answer:

Area of land: 800 miles.

Step-by-step explanation:

Since the map is a square, you can assume that all 4 sides will equal 8 inches. (Giving you a perimeter of 32, and an area of 64.) Since each inch corresponds to 5 miles, you multiply 8 by 5 which equals 40.

If you help me with these then I will give brainiest
20 points
5 questions

Answers

Answer:

1st I think is C 2nd I think is D

Step-by-step explanation:

I dunno tho I hope it's right:/

Step-by-step explanation:

the answer of 2nd question is A

Haley has $84, which is 7 times as much money as Kevin has. How much money does Kevin have? Select the correct solution method, using x to represent Kevin's money.​

Answers

x*7=84
84/7=x
12=x
Kevin has 12$

simplify 3x × x
thanks​

Answers

Answer:

3x^2

Step-by-step explanation:

guys please help me I really need it. this is chemistry. but I put it as mathematics because I never get help on my chemistry questions ​

Answers

Step-by-step explanation:

the heterogeneous :

suspensions

colloids

but solutions and alloys are homogeneous .

Emily makes 75 pins to sell at the schools craft fair. she has two designs: a star and a bumblebee. she makes 2 pins for every 3 bumblebee pins. how many pins of each type does Emily make?​

Answers

30 star pins

45 bumblebee pins

hope this is correct !!

Which equation represents a line that passes through (0,–8) and (–5,–23)?

A) y = 4x – 8

B) y = –8x + 3

C) y = 5x – 8

D) y = 3x – 8

Answers

The equation of line that passes through points (0,-8) and (-5,-23) is y=3x-8 which is option d.

Given that the line passes through (0,-8) and (-5,-23).

We are required to find the equation of the line that passes through (0,-8) and (-5,-23).

Equation is like a relationship between two or more variables expressed in equal to form. Equation of two variables look like ax+by=c. It may be linear equation, quadratic equation, cubic equation, and many more depending on the power of the variable.

The formula to form the equation from two points is as under:

[tex](y-y_{1}) =(y_{2} -y_{1} )/(x_{2} -x_{1} ) * (x-x_{1} )[/tex] in which [tex](x_{1} ,y_{1} ),(x_{2} ,y_{2} )[/tex] are the points.

(y+8)=(-23+8/-5-0)(x-0)

y+8=(-15/-5) x

y+8=3x

y=3x-8

Hence the equation of line that passes through points (0,-8) and (-5,-23) is y=3x-8 which is option d.

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WILL GIVE BRAINLIEST, PLEASE EXPLAIN J=HOW TO FIGURE THIS PROBLEM OUT THANK YOU. The figure below shows a shaded region and a non-shaded region. Angles in the figure that appear to be right angles are right angles.

A picture of a rectangle is shown. The bottom of the rectangle is labeled 16 ft. The right side of the rectangle is labeled 8 ft. At the bottom left side of the rectangle there is a label that reads 2 ft. Inside the rectangle is a shaded region. The bottom of the region is labeled 8 ft and this side is perpendicular to the left side of the rectangle. The right side of the shaded region has a perpendicular line segment extending upward that is labeled 2 ft. At the top of this line segment is another line segment perpendicular to the right that reads 2 ft. At the end of this line segment is a perpendicular line segment extending upward that reads 1 ft. There is a line segment joining the end of this line segment with the top left corner of the rectangle.

What is the area, in square feet, of the shaded region?

Answers

Answer:

NEED A PICTURE

Step-by-step explanation:

need a picutre

I’ll be back Imma go ask my friend he will help

What is the value of y? Show you’re work

Answers

Answer:

Y = 32

Step-by-step explanation:

First traingle is 180 degrees

So 180 - 52 = 128

Then 2y + 2y = 4y

So now 128/4 = 32

If you wanna checl ur answer just put the number in and check if it equal to 180

A pool is surrounded by a rectangular fence with a
perimeter of 72 yards. If the length of the fence is 3
times the width, what is the length of the fence, in yards?

Answers

Answer:

width is 33

Step-by-step explanation:

width (b) =?

length(l)=3

perimeter (p)=?

now,

perimeter = 2(l+b)

or,72= 2(3+ b)

or,72/2= 3+b

or,36= 3+b

or,36-3= b

or,33= b

therefore width is 33

Olivia is in a lighthouse on a cliff. She observes two sailboats due east of the
lighthouse. The angles of depression to the two boats are 33 and 57°. Find the
distance between the two sailboats to the nearest foot.
-C7
85 ft
33
57
E
110 Ft
B

Answers

Answer:173

Step-by-step explanation:

Q is the midpoint of PR.
PQ = 4x - 7 and QR = 3x + 1.
Find the length of PR. W

Answers

86x 997. W length or

what answer is equal to -3(x-6)?

Answers

C is the correct answer

Is(1, 9)a solution to the inequality y ≤ 6x + 2?

Answers

Answer:

nope

Step-by-step explanation:

Answer:

No

Step-by-step explanation:

It wouldn't be 1,9 it would 1,8 instead also if need help with those an app called desmos helps a lot

CAN SOMEONE HELP IM OT GOOD AND MATH ITS VERY EASY IM JUST NOT SMART YKKKK

Answers

Answer: -3

Step-by-step explanation: the number before x is the slope

can someone answer it plsssssss

Answers

Answer:

3

Step-by-step explanation:


How many solutions does the system of equations below have?
y=-62 – 7
y=-62 – 7


Answers

the answer is 2 i think

Work out − 5 × ( − 8 )

Answers

negatives cancel out each other so 5x8 which is 40
answer: 40x
explanation: cross out the negatives then multiple 5x x8 which will be 40x

Lazare is dividing 52.8 ounces of cereal equally into 9 bags. Which is the best way to estimate the amount of cereal in each bag?

Answers

If I'm not mistaken it's 5.9

Estimate amount of cereal in one bag is 5.867 ounces.

What are mathematical operations?

Calculate the answer using a math operator is referred to as a mathematical operation.

Basic mathematical operations are addition, multiplication, subtraction and division.

Total quantity of cereal that Lazare has = 52.8 ounces.

And number of bags into which cereal equally divides = 9

To find the amount of cereal in each bag,

Use mathematical operations,

Since, total bags are 9 and amount of cereal is 52.8 ounces.

So, in one bag amount of cereal = 52.8 / 9 = 5.8666 = 5.867

In one bag there will be 5.867 ounces of cereal.

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Given a circle with endpoints of a diameter at-10 -1i and 6 + 11i, answer the questions below.
1. The center of the circle is at -2 +5i
2. The radius of the circle has a length of ___ units. ​

Answers

Answer: 10

Step-by-step answer:

Answer:

10

Step-by-step explanation:

I don't actually know how to find it, but that was the right answer on edge

Please someone help me with this math problem

Answers

Answer:

I would say A, and D

Evaluate 8y - 2k when y = 9 and k = 7

Answers


Answer:
58

Explanation:


8(9)-2(7)
72-14
=58

Hope this helps!!
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