3x-2y=7
-x+3y=-7
What is the simultaneous answer?
​

Answer:

the gcf for 40 and 42 is 2

and lcm for 40 and 42 is 840

Step-by-step explanation:

the factors of 40 are 1,2,4,5,8,10,20,40 ; the factors of 42 are 1,2,3,6,7,14,21,42 .

So what they have in common for GCF is 2 for a factor .

multiples of 40: 40, 80, 120,160,200,240,etc.

multiples of 42 : 42, 84,126,168,210,252,etc.

What they have in common for LCM is a multiple is 840

hope I helped ! please mark me brainlest if I got it right :)

Answer:

28in

Step-by-step explanation:

you cut the face in shapes you recognize how to do the area of. Then find the numbers of the shapes that might be missing, then add them all up.

I see a rectangle, square, and square.

A = 10×2

A = 20in

A = 2x2

A = 4

A = 2x2

A = 4

add the areas up you get 28in

Answer:

Step-by-step explanation:

Opposite sides of a parallelogram are congruent:

Answer:

2x - 15 +21 = -18

2x + 6 + 18 = 0

2x + 24 =0 ...it is a linear equation

if u want to solve for X then..

2x = -24

X = - 24

2

X = -12

Answer:

Yes that is correct. 89 and below. Is a B. 90 or higher is a A.

Step-by-step explanation:

Answer:

Pictograph

Step-by-step explanation:

Answer:

Step-by-step explanation:

I hope you want the area.

Area = L * W

L = 24x^3

W = 5x^2

Area = 24x^3 * 5x^2

Area = 120 * x^(3 + 2)

Area = 120 * x^5

Note

When you multiply numbers or letters that have powers, if the base for both of them is the same, the powers are added.

The above answer is an example x^2 * x ^3 are letters (x) that are raised to the 2nd power and the 3rd power. You add the powers.

Numbers can do the same thing

64 * 8 = 256

Answer:

24 cm ²  B.

Step-by-step explanation:

if the triangle is a right triangle he I know it

do 4*3=12 the /2 so 6

8-4=4  4*1.5=6  

3*4=12

12+6+6

24 I think

Answer:

A.

Step-by-step explanation:

7+3=10 so it will be A, you're welocme

Answer:

A and D

Step-by-step explanation:

A) x + 7 = 10

D) 4 × x = 12

Answer:

C. (-1, 3)

Step-by-step explanation:

Label the 2 equations:

5y= 7x +22 -----(1)

x= -6y +17 -----(2)

Substitute (2) into (1):

5y= 7(-6y +17) +22

5y= -42y +119 +22 (Expand bracket)

5y= -42y +141 (Simplify)

42y +5y= 141 (+42y on both sides)

47y= 141

y= 141 ÷47 (÷47 on both sides)

y= 3

Substitute y= 3 into (2):

x= -6(3) +17

x= -18 +17

x= -1

Thus, the solution is (-1, 3).

Answer:

a or c

Step-by-step explanation:

I don’t know ask for help sorry don’t blam this on me

Answer:

6

Step-by-step explanation:

6*4=24

1/2*24=12

3+2=5

12/5=6

Parenthises

Exponets

Multiplication

Divide

Add

Subtract

Hope this helps!!

Answer:

6

Step-by-step explanation:

1/2 x (6 x 4) ÷ 3 + 2  

(We do the equation in the parenthesis 1st)

1/2 x 24 ÷ 3 + 2    

(Since it's multiplication and division, we just go from left to right)

4 + 2

6

Answer:

1: 115

2: 65

3: 115

4: 65

5: 143

6: 37

7: 28

8: 152

Answer:

The percent of change is 22.22%.

Step-by-step explanation:

You can calculate the percent of change by subtracting the original number from the final number and dividing that by the original number. Then, you have to multiply the result for 100:

percent of change=((1,100-900)/900)*100

percent of change=(200/900)*100

percent of change=22.22%

According to this, the answer is that the percent of change is 22.22%.

Answer:

I think its 13

Please mark brainliest if its correct and want further answers :)

Answer:

336 cm^2

Step-by-step explanation:

Well theres not exactly a formula, I jsut solve the 3 faces and then double it all since 2 are the same for each except for 1 so the first side is the 10X12 one. that would give you 60 and then you double that and get 120 since 2 same faces.

The next one the 6X13  one is just a sideways rectangle, a=lw and that would be 78. Two faces same side double 78 and get 156.

Now the final side is the bottom which is jsut 10X6. a=lw and that would eqaul 60. No need to double since thats the only side that doesn’t have a duplicate. Add all your result up and you would get

336 cm^2

Answer: The answer is 4/3 the original answer is 1 and 1/3 but if you simplify it you get 4/3

-hopes this helps<3

Step-by-step explanation:

Answer:

x(3 + 4)

4(3x + 1)

Step-by-step explanation:

3x + 4x

The common factor is x, so factor out the x.

3x + 4x = x(3 + 4)

12m + 4

The common factor is 4, so factor out the 4.

12m + 4 = 4(3x + 1)

Answer:

I think it B but I really don't know cause need like an example

The k in the equation represents Option B) The constant of variation

A constant is a value or number that never changes in expression; it's constantly the same. For example,  36 and 82 are constant because its face value is 36 and 82 respectively. Its value never changes.

Given here the equation y=kx where k is the slope and a scalar value thus it is independent of x and y and thus is a constant.

Hence, The k in the equation represents Option B) The constant of variation

Learn more about the constant in an equation here:

https://brainly.com/question/29248372

#SPJ2

Answer:

89.25

Step-by-step explanation:

because:

it just is

I do not know that that is hard

Answer: Why does this guy need so much soda? And my brain isn't working for math right now. Sorry sweetheart.

Step-by-step explanation: Have a nice day!

Answer:

1986-2510=-524

-524-420=-994

-994+712=-232

final altitude=-232

Step-by-step explanation:

Answer:

Step-by-step explanation:

6/x^2 + 2 x = 7

2 x^3 - 7 x^2 = -6 (for x!=0)

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

Answer:

x = 7

Step-by-step explanation:

-4x/-4 = -28/-4

x = 7

Answer:

S y-intercept (0,2)

R y intercept (0,0)

Step-by-step explanation:

Answer:

[tex]x = 29.65 \\ = > x = 30[/tex]

Answer: 2*200-321+67=56-65? look at the picture

Step-by-step explanation: Hope this help :D

Answer:

-9

Step-by-step explanation:

2 x 200 = 400

400 -321 = 79

79 + 67 = 146

56 - 65 = -9

Please let me know if this helps.

Answer:

120

Step-by-step explanation:

Answer: 156mm sq for the rectangle and 100mm sq for the triangle

Answer:

225

Step-by-step explanation: