x + 10y = 30
to
y = mx + b form

Answer: D. An equation is an identity if it can be rewritten as 0 =0. Such an equation has an infinite number of solutions because it reduces to a true statement regardless of the value of the variable.

Step-by-step explanation:

For an identity equation ; The value on the right and left hand side of the equation are equal :

Left hand side = Right hand side

The solution to an identity solution is infinite because the equation holds true for every value substituted for the variable.

Hence, for every value substituted in for the variable in the equation, the equation is a true statement.

Answer: It is not a Function

Step-by-step explanation: One input has two outputs.

Step-by-step explanation:

5x+2y=29

5x-2y=41

add the equations

10x=70

divide both sides by ten

x=7

substitute 7 in the first equation

5(7)+2y=29

simplify

35+2y=29

subtract 35 from both sides

2y=-6

simplify

y=-3 x=7

3x+2y=9

5x+2y=12

subtract the equations

-2x=-3

simplify

x=1.5

substitute

3(1.5)+2y=9

simplify

4.5+2y=9

subtract 4.5 from both sides

2y=4.5

simplify

y=2.25 x=1.5

5x+2y=-9

2x-3y=4

multiply first equation by three and second by two

15x+6y=-27

4x-6y=8

add equations

19x=-19

simplify

x=-1

substitute

15(-1)+6y=-27

simplify

-15+6y=-27

add 15 to both sides

6y=-12

simplify

y=-2 x=-1

Answer:

x = 6.

Step-by-step explanation:

There are actually two possible solutions, namely 6 and -1. However, due to the impossibility of the answer being -1 (a side cannot have negative length), the answer is 6.

Hope this helped!

Answer:

i think its -31

Step-by-step explanation:

thats what i got

hope this helps :)

Answer:

-22

Step-by-step explanation:

PEMDAS!

Solve (15 ÷ 5 × 6) first. This is equal to 18.

[tex]3^2[/tex] + 18 - 49

[tex]3^2[/tex] is equal to 9.

9 + 18 - 49 = -22

Answer:

Winnie needs to buy 6 slices of Coffee cake.

Step-by-step explanation:

12 * 5= $60 (chocolate cake)

120 - 60= 60

since we know the coffee cake costs $10(per slice) we do:

60/ $10= 6 slices of coffee cake.

Answer:

236462700.81

Step-by-step explanation:

The nearest cent refers to the hundreds place, because 100 pennies (or cents) make 1 dollar. We look at the number to the right of the hundredths place and if it is less than 5 we round down, but if it is 5 or more we round up. Since 6 is more than five we round up, and are left with 236462700.81.

Answer: 35

Step-by-step explanation: 85% of 40 basically you multiply 0.85 by 40 :)

Answer:

-30x3 because you are subtracting 30 3 times

Step-by-step explanation:

Answer:

2/15

Step-by-step explanation:

21 times 5 = 105

2 times 7 = 14

14/105 divided by 7       ( They both can be divided by 7 )

2/15

Answer:

The answer is B

Step-by-step explanation:

8^1/3=2

Answer:

t<47/33

Step-by-step explanation:

Answer:

slope: 4/6

Y intercept: -2

Equation: y=4/6x-2

Answer:

234500000020000000000000000

Step-by-step explanation:

Answer:

2x+2-2y

Im confused are those supposed to be ^2 powers? If so then the answer would be

x^2+6x+5-y^2-4y

Step-by-step explanation:

I REALLY HOPE THIS HELPS PLS CONSIDER GIVING BRAINLIEST I REALLY NEED IT AND WOULD APPRECIATE IT!

Answer:

x = 1.335

Step-by-step explanation:

2x = 10/3.75

2x = 2.67

x = 1.335

Answer:

Step-by-step explanation:

(x - 2) (3x + 1) (4x – 3)=

12x^3-29x^2+7x+6

 Foil the binomials.

x*3x x*4x etc

Answer:

use desmos.

Step-by-step explanation:

demos. All you have to do is out the equation into Desmos and it will graph it for you. You can look and learn.

Answer:

f(x)=20+4x = -5

Step-by-step ;

answer is -5 .

Answer:

x = 12

Step-by-step explanation:

Solve for x:

[tex] \longrightarrow [/tex] 5 (x - 6) = 2(x + 3)

Expand out terms of the left hand side:

[tex] \longrightarrow [/tex] 5x - 30 = 2(x + 3)

Expand out terms of the right hand side:

[tex] \longrightarrow [/tex] 5x - 30 = 2x + 6

Subtract 2x from both sides:

[tex] \longrightarrow [/tex] (5x - 2x) - 30 = (2x - 2x) + 6

5x - 2x = 3x:

[tex] \longrightarrow [/tex] 3x - 30 = (2x - 2x) + 6

2x - 2x = 0:

[tex] \longrightarrow [/tex] 3x - 30 = 6

Add 30 to both sides:

[tex] \longrightarrow [/tex] 3x + (30 - 30) = 30 + 6

30 - 30 = 0:

[tex] \longrightarrow [/tex] 3x = 6 + 30

6 + 30 = 36:

[tex] \longrightarrow [/tex] 3x = 36

Divide both sides of 3x = 36 by 3:

[tex] \longrightarrow [/tex] [tex] \sf \dfrac{3}{3}x = \dfrac{36}{3} [/tex]

[tex] \sf \dfrac{3}{3} = 1: [/tex]

[tex] \longrightarrow [/tex] [tex] \sf x = \dfrac{36}{3} [/tex]

[tex] \sf \dfrac{36}{3} = 12: [/tex]

[tex] \longrightarrow [/tex] x = 12

Answer: 12

Step-by-step explanation: On Edge!!!!!!!!!!!!!!!!!!!

Answer:

y = - 4x + 5

Step-by-step explanation:

y = mx + b

(0, b) y-intercept

m = [tex]\frac{y_{2} -y_{1} }{x_{2} -x_{1} }[/tex]

~~~~~~~~~~

( - 2, 13)

(0, 5) <----- y-intercept

(3, - 7)

(4, - 11)

m = [tex]\frac{-11+7}{4-3}[/tex] = - 4

y = - 4x + 5

Answer:

b is the answer

Step-by-step explanation:

Answer:

2+w greater than 5

Step-by-step explanation:

w=-3

Answer:

[tex]w = 3[/tex]

Step-by-step explanation:

[tex]2 + w > 5 \\ w = 5 - 2 \\ w = 3[/tex]

Answer:

6<2x

Step-by-step explanation:

six less than 2  is 6<2

times a number would be 2 and any letter so 2x

Answer:

1. 18 2. 13 3. 36

Step-by-step explanation:

Answer:

18%

Step-by-step explanation:

Solve by making 180/220 into a percentage:

First, simplify the fraction by both parts by 20. This will result in the fraction 9/11.

To make it a percentage, write it as a ratio:

9/11 = x/100

Multiply both sides by 100 and 11:

11x = 900

Divide both sides by 11:

x = 81.818181...

Subtract from 100 to find the error:

18.181818...

So about 18%

Hope that helps! :D

Answer: 18%

Step-by-step explanation: Trust me.