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SIZIF [17.4K]
3 years ago
10

I am trying to remember how to do Write a two-column proof,

Mathematics
1 answer:
Klio2033 [76]3 years ago
4 0

9514 1404 393

Explanation:

Make use of the properties of equality.

  a = 2b +6 . . . . . given

  a = 9b -8 . . . . . given

  2b +6 = 9b -8 . . . . . . . substitution property of equality

  6 = 7b -8 . . . . . . . . . . . subtraction property of equality

  14 = 7b . . . . . . . . . . . . . addition property of equality

  2 = b . . . . . . . . . . . . . . . division property of equality

  b = 2 . . . . . . . . . . . . . . symmetric property of equality

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How many meters is 1/2 decameter?
Anestetic [448]

Answer:

1/2 decameter = 5 meters

Step-by-step explanation:

1 decameter = 10 meters

10/2 = 5

8 0
3 years ago
Explain the difference between 4 times the sum of x and y and the sum of 4 times x and u
Rainbow [258]

Answer:

The first question is adding x and y together, before multiplying it by 4.

The second question is 4 multiplies x, then y is added into 4x.

Step-by-step explanation:

4 multiplies the sum of x and y:

4*(x+y)


The sum of [4 multiplies x and y]

4*x+y

4 0
3 years ago
What is the 10th term of the geometric sequence 400, 200, 100...?
Vsevolod [243]

ANSWER

a_ {10} = \frac{25}{32}

EXPLANATION

The given geometric sequence is

400, 200, 100...

The first term is

a_1=400

The common ratio is

r =  \frac{200}{400}  =  \frac{1}{2}

The nth term is

a_n=a_1( {r}^{n - 1} )

We substitute the known values to get;

a_n=400(  \frac{1}{2} )^{n - 1}

a_ {10} =400(  \frac{1}{2} )^{10 - 1}

a_ {10} =400(  \frac{1}{2} )^{9}

a_ {10} = \frac{25}{32}

4 0
4 years ago
Explain what is the difference between the solutions to 2x=10 and 2x > 10
Nat2105 [25]

Answer:

See explanation below

Step-by-step explanation:

Explain what is the difference between the solutions to 2x=10 and 2x > 10

Given the equations;

2x  = 10

x = 10/2

x = 5

For the equation 2x > 10

x > 10/2

x > 5

The first equation has only one solution which is 5 while the second equation has infinite number of solutions since the values of x can take any value that is greater than 5

3 0
3 years ago
Find the percent of tip cost of meal $18.50, tip $2.59
UNO [17]
18.5x=2.59 (18.5 is the total, x is the percent tip, and 2.59 is how much the tip is).
x=.14 (multiply by 100 to get a percentage)
14%
5 0
3 years ago
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