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Eduardwww [97]
3 years ago
10

Simplify 7x + 7 + 6x - 9. 13x - 2 13x + 2 11x

Mathematics
2 answers:
nikklg [1K]3 years ago
7 0
To do this you must combine like terms as follows.

7x + 6x = 13x
7 - 9 = -2 

Combine these together and you will get the following.

13 - 2 or -2 +13
Gala2k [10]3 years ago
6 0

Answer:

x = -2/13

Step-by-step explanation:

This is a first degree polynomial. To solve it, you need to follow these steps:

Step 1: Equate the polynomial to zero

7x + 7 + 6x - 9 = 0

Step 2: Separate all numbers that have variable "x" on one side of equality and real numbers on the other side

7x + 6x + 7-9

Note: Remember that if you are going to pass a number from side to side the equality is reversed.

Step 3: Add Both Sides

13x = -2

Step 4: Isolate the "x" Variable

x = -2/13

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RULE OF FOUR: Multiple Representations of Math
nevsk [136]

Answer:

Graph ⇒ see the attached figure

Create a table ⇒ see the attached figure

Expression/Equation ⇒ y = 8x

What is the slope? ⇒ 8

What is the y-intercept? ⇒ zero

Step-by-step explanation:

Given: Meat costs $8.00 per pound at a store.

Let the number of pounds = x, and the total cost = y

So, the equation which represents the given situation is ⇒ y = mx

Where m is the slope.

If x = 1 pound , the meat costs = y = $8

So, y = 8x

The table can created by let values for x and find the values of y.

The attached table represents the table and the graph of y = 8x

The slope = 8

y-intercept is the value of y when x = 0

so, the y-intercept = 0

4 0
3 years ago
We found the correlation coefficient for the comparison between height and weight in babies to be -0.12. That meanscorrelation i
qwelly [4]

Answer:

The taller the baby, the lighter the baby

Explanation:

A correlation coefficient is a number between -1 and 1. The correlation is strong when it is a number closer to -1 or closer to 1 and the relation is independent when it is a number closer to 0.

In this case, we get that the correlation coefficient is -0.12, so there is a weak negative correlation. The negative means that when one variable increases, the other decrease, so the taller the baby, the lighter the baby.

Then, the answer is:

The taller the baby, the lighter the baby

6 0
2 years ago
Write the inverse variation function given that y varies inversely with x, and y = 0.25 when x = 8.
storchak [24]

Answer:

Step-by-step explanation:

If a given variable varies inversely with another variable, an increase in the value of the given variable would cause a corresponding decrease in the value of the other variable. Also, a decrease in the value of the given variable would cause a corresponding increase in the value of the other variable.

If y varies inversely with x, we would introduce a cost of variation, k so that the expression becomes

y = k/x

When y = 0.25, x = 8

Substituting into the expression above, it becomes

0.25 = k/8

k = 0.25 × 8

k = 2

The inverse variation function is

y = 2/x

5 0
3 years ago
0.0000003513 in scientific notation
andre [41]
0.00000003513  move the decial 8 places and u will get 3.513
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Step-by-step explanation:

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3 years ago
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