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Zinaida [17]
3 years ago
12

I need help with this one.

Mathematics
1 answer:
erastova [34]3 years ago
6 0

Answer:

y = 3x + 5

Step-by-step explanation:

The equation in slope- intercept form is

y = mx + c

Calculate m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (- 2, - 1) and (x₂, y₂ ) = (2, 11) ← 2 ordered pairs from the table

m = \frac{11+1}{2+2} = \frac{12}{4} = 3, thus

y = 3x + c ← is the partial equation

To find c substitute any ordered pair from the table into the partial equation

Using (2, 11 ), then

11 = 6 + c ⇒ c = 11 - 6 = 5

y = 3x + 5 ← equation of linear function

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The sum of the digits of a two-digit number is 12. The number formed by reversing the digits is 54 more than the original number
andreyandreev [35.5K]

Answer:

39

Step-by-step explanation:

let the 2 digit number be ab = 10a + b ( considering place value )

The reversed  2 digit number is ba = 10b + a

The sum of the 2 digit number is

a + b = 12 ( subtract b from both sides )

a = 12 - b → (1)

Expressing as an equation

ba = ab + 54 , that is

10b + a = 10a + b + 54

Substitute a = 12 - b into the equation

10b + 12 - b = 10(12 - b) + b + 54 , simplify both sides

9b + 12 = 120 - 10b + b + 54

9b + 12 = - 9b + 174 ( add 9b to both sides )

18b + 12 = 174 ( subtract 12 from both sides )

18b = 162 ( divide both sides by 18 )

b = 9

Substitute b = 9 into (1)

a = 12 - 9 = 3

Thus

the original 2 digit number = ab = 39

The reversed 2 digit number = ba = 93

which is 54 more than the original number

7 0
3 years ago
Please help me thank you
denpristay [2]

Answer:

Step-by-step explanation:

First answer is 4. Second answer is 3/5.

5 0
3 years ago
A set of ordered pairs is called ordered pairs is called
Amiraneli [1.4K]

A set of ordered pairs is called a relation. The set of all first components of the ordered pairs of a relation is the domain of the relation, and the set of all second components of the ordered pairs is the range of the relation. :)

4 0
3 years ago
a computer store builds custom computers by allowing customers to choose 1 of 4 different CPU's. 1 of 8 hard drives, and 1 of 3
Lelechka [254]
You multiply the possibilities.

4*8*3 = 96 possibilities.
3 0
3 years ago
Read 2 more answers
I need help . need to get done quick thank you
marissa [1.9K]

The first one equals 0.00116

The second one equals 195,000

the third one equals 0.0286

and the fourth one equals 87,310,000,000,000,000

The smallest one is A 0.00116

Hope this helps, Jesus loves you!

4 0
3 years ago
Read 2 more answers
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