which property of addition is used in the following (5+12)+6=5+(12+6)

Step-by-step explanation:

let the 2 numbers be x and y.

x - 8 = y --(1)

5x = 2y - 8 --(2)

sub (1) into (2):

5x = 2(x - 8) - 8

5x = 2x - 24

3x = -24

x = -8

sub x = -8 into (1):

y = -8 - 8 = -16

first number is -8 and second number is -16.

Topic: algebraic equations + simultaneous equation

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Answer:

8

Step-by-step explanation:

15-7=8

8+7=15

Answer:

16

Step-by-step explanation:

1) Subtract 7 from 15. 15-7=8

2) Multiply 8 by 2. 8x2=16

Therfore your answer is 16.

Answer:

3x-4y=-16

Step-by-step explanation:

Answer:

0.09 m

Step-by-step explanation:

hope this helps you :):)

are there options to the question or do you have to write it

9514 1404 393

Answer:

  3x -4y = 12

Step-by-step explanation:

There are a number of different forms of the equation of a line. A few are ...

  y = mx + b . . . . slope-intercept form

  y -k = m(x -h) . . . . point-slope form

  x/a +y/b = 1 . . . . intercept form

  ax +by +c = 0 . . . . general form

  ax +by = c . . . . standard form

In "standard form", the coefficients a, b, c are mutually prime integers (have no common factors) and the leading coefficient (usually, 'a') is positive.

__

Given this graph, there are several ways to get to a standard form equation. Perhaps the quickest is to start with intercept form. We can see from the graph that the x-intercept is 4 and the y-intercept is -3. So, we can write the equation of the line in intercept form as ...

  x/4 +y/(-3) = 1

Multiplying this by 12 clears the fractions and gives us standard form:

  3x -4y = 12

Answer:

29.17 hours

Step-by-step explanation:

to find the zero of the function, set d to equal zero, so

0 = 70 - 2.4t

-70 = -2.4t

-70/-2.4 = t

29.17 = t

Answer:

x= 14/9 = 1 5/9

Step-by-step explanation:

Use the distributive property to multiply 2 by 5x−3.

2(5x−3)−4=x+4

Subtract 4 from −6 to get −10.

10x−6−4=x+4

Subtract x from both sides

10x−10=x+4

Combine 10x and −x to get 9x.

10x−10−x=4

Add 10 to both sides.

9x−10=4

Divide both sides by 9.

x=  14/9

Please mark brainliest.

​  

Answer:

It crosses through 0,-23) and (4.6,0)

Step-by-step explanation:

Answer:

Step-by-step explanation:

False.

Answer:

4900

Step-by-step explanation:

If 55% of workers are women, then 45% are not; therefore, we need to answer the following:

2205 is 45% of what number?

2205=45%x

2205/.45=x

4900=x

Divide total length needed by length of a piece:

230/8 = 28.75

Round up to 29

They need 29 pieces

Answer: Time taken =1.25 x 10^1 hours 0r  4.5 x 10^4s

Step-by-step explanation:

Step 1

how long will it take the rocket to make the trip from Earth to the​ satellite = Time taken for the rocket to make the trip from Earth to the​ satellite

Speed = Distance / Time ,

Time = Distance / speed

Step 2-- solving

Time = Distance / speed

Time=2.5×10^5 miles/2.0×10^4 miles per hour

=12.5 hours  = 1.25 x 10^1 hours

or 1.25 x 10^1 hours  x 3600 = 45,000 seconds = 4.5 x 10^4s

Answer:

Step-by-step explanation:

Answer: The pack with the better value is the 4 pack!

$3.45/3 = 1.15 per bulb

$4.20/4 = 1.05 per bulb

Step-by-step explanation:

Answer:

x = -4

Step-by-step explanation:

x(x + 4) = 0

x = 0   ; x + 4 = 0

                 x = 0 - 4

                 x = -4

Answer

Red is -19

Green is -24

Blue is -14

Purple is 17

Step-by-step explanation:

I don't really know what to do but...

Hope I helped.

Answer:

13,24,24,-10

Step-by-step explanation:

when the negatives are in the front it makes a positive number and two negative numbers can make a positive number also. but when the negative number is the second number it will make a negative number.

Answer:

pic below

Step-by-step explanation:

Given :

A 18​-mile taxi ride takes 21 minutes and costs ​$12.60.

To Find :

The cost of a 39​- mile taxi ride. What unit price do you​ need.

Solution :

Unit price per mile :

[tex]p=\dfrac{12.60}{18}\\\\p = \$0.7\ /mile[/tex]

Cost of 39 mile taxi ride :

[tex]C = 39\times p\\\\C=39\times 0.7\\\\C=\$27.3[/tex]

Therefore, unit price is $27.3 and unit price is $0.7 / mile .

Hence, this is the required solution.

Answer:

C

Step-by-step explanation:

Answer: 81.

Step-by-step explanation:

( (3^4) ^ 1/4) ^ 4

Answer:

Price Elasticity of Supply = 1.25

Step-by-step explanation:

Price      Quantity        Total Revenue ( P x Q)

100     10000/100 = 100       10000

120      15000/120 = 125        15000

Price Elasticity of supply is change in quantity supplied, due to change in price. Formula : (dQ / dP) x (P / Q)

(125 - 100) / (120 - 100)   x (100/100)

= 25/20 = 1.25

Answer:

ok

Step-by-step explanation:

kin

Answer:

a. $22.2

b= 13.32/x=3/5

Step-by-step explanation:

13.32/x=3/5

13.32×5=66.6

66.6/3=22.2

x(present cost)=$22.2

Answer:

22.20$

3/5 * cost = 13.32

Step-by-step explanation:

3/5 * cost (total price) = 13.32 (we know that 3/5 of the price is 13.32)

to solve

5/3 to cancel out 3/5 and isolate the cost

5/3 * 13.32 = 22.20

Answer: Forma Decimal: -2, 0.5

Answer:

-4

Step-by-step explanation:

I know this becasue I did it before but also becasue I checked my work with a slope calculator. You should use one if you don't want to hand do the work. If you do want to do the work it is y2-y1 over x2-x1 :)

Answer:

x = 2, x = - 2

Step-by-step explanation:

Step 1:

x² - 4 = 0            Equation

Step 2:

x² = 4         Add 4 on both sides

Step 3:

x = [tex]\sqrt{4}[/tex]       Square 4

Answer:

x = 2, x = - 2

Hope This Helps :)