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liberstina [14]
1 year ago
8

Just an answer and simple explanation! Thank you.

Mathematics
1 answer:
vazorg [7]1 year ago
6 0

Answer:

15

Step-by-step explanation:

If CD and DE equal, then x+6 = 4x -21

So if you subtract x from both sides and plus 21 to both sides, that would be 3x = 27. Divide by 3 on both sides and you get 9.

Plug in x+6 with 9 and you get 15.

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Please, help me. I'm not sure what to do.
Nezavi [6.7K]
Answer is d, its simple....
3 0
3 years ago
By visual inspection ,determine the best fitting regression model for the scatter plot
k0ka [10]

Answer:

if the scatter plot has a curve like the one attached does then it is quadratic  regression.

Step-by-step explanation:

Exponential growth is a specific way that a quantity may increase over time. ... Described as a function, a quantity undergoing exponential growth is an exponential function of time, that is, the variable representing time is the exponent (in contrast to other types of growth, such as quadratic growth).

Exponential growth is a specific way that a quantity may increase over time. It occurs when the instantaneous rate of change (that is, the derivative) of a quantity with respect to time is proportional to the quantity itself.

This means if it has a curve that doesn't represent same value proportions to another axis. that is different to exponential then we say it is quadratic regression.

The formal term to describe a straight line graph is linear, whether or not it goes through the origin, and the relationship between the two variables is called a linear relationship.

5 0
2 years ago
Using the completing-the-square method, rewrite f(x) = x2 − 6x + 2 in vertex form.
Irina18 [472]

Answer:

f(x)=(x-3)^2-7

Step-by-step explanation:

Vertex form: f(x) = a(x-h)^2+k

x^2-6x+9+2=f(x)+9

(x-3)^2+2=f(x)+9

f(x)=(x-3)^2-7



8 0
3 years ago
What is 50% of 2? Percent of a quantity?
Sonja [21]

Answer:

1

Step-by-step explanation:

you divide  2  in half.

4 0
3 years ago
Combine the like terms to create an equivalent expression. 5 + 9t + 3
nikdorinn [45]

Answer:

9t + 8

Step-by-step explanation:

9t + (5+3)

Think of it like this. You have 9 oranges, 5 grapes, and 3 grapes. How many grapes and oranges do you have?

Math wise, we will have t representing oranges, and the normal numbers representing grapes. All you have to do is combine them using whatever sign separates them. If you need more help, let me know.

7 0
2 years ago
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