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tester [92]
3 years ago
13

How can i use decimal models to add decimals?

Mathematics
2 answers:
Shkiper50 [21]3 years ago
8 0
Are you sure that the question plz send a picture
Vinil7 [7]3 years ago
3 0
<span>Understand that a decimal is any number written in the base-10 system....

Represent decimals using area models.

State the fraction (tenths or hundredths) that is equivalent to a given decimal.
<span>
Compare the values of decimals (tenths or hundredths) using area models and/or a number line.</span></span>
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What is the equation of the following graph in vertex form? parabolic function going down from the left through the point negati
Anestetic [448]
A parabolic function's key characteristic is either having 2 x-intercepts or 2 y-intercepts. That is the reason why the standard form of parabolic functions are:

(x-h)^2 = +/- 4a(y-k) or (y-k)^2 = +/- 4a(x-h), where

(h,k) is the coordinates of the vertex
4a is the lactus rectum
a is the distance from the focus to the vertex

This is also called vertex form because the vertex (h,k) is grouped according to their variable.
 
Since we don't know any of those parameters, we'll just have to graph the data points given as shown in the picture. From this data alone, we can see that the parabola has two x-intercepts, x=-4 and x=-2. Since it has 2 roots, the parabola is a quadratic equation. Its equation should be

y = (x+4)(x+2)
Expanding the right side
y = x²+4x+2x+8
y = x²+6x+8
Rearrange the equation such that all x terms are on one side of the equation
x²+6x+___=y-8+___
The blank is designated for the missing terms to complete the square. Through completing the squares method, you can express the left side of the equation into (x-h)² form. This is done by taking the middle term, dividing it by two, and squaring it. So, (6/2)²=9. Therefore, you put 9 to the 2 blanks. The equation is unchanged because you add 9 to both sides of the equation.

The final equation is 
x²+6x+9=y-8+9
(x+3)²=y+1

6 0
3 years ago
hurry! You receive a $150 bonus each month you reach your sales quota. You reach your sales quota for each of 3 months. What is
Lera25 [3.4K]

450

I used my head lol

7 0
3 years ago
Can anybody help me with this?<br><br> Use this graph of f to find the solutions to f(x) = 0.
Brums [2.3K]
Another way to say f(x) is y, so y=0 at -2 and 10. :)
6 0
2 years ago
What is 40% of 5?<br> i need help
natka813 [3]

Answer:

2

Step-by-step explanation:

8 0
3 years ago
19.5+24+7.5 = 19.5+__+24 = ___+24=___
Rasek [7]

Answer:

7.5, 27, 51

Step-by-step explanation:

19.5 + 24 + 7.5 = 19.5 + <u>7.5</u> + 24 = <u>27</u> + 24 = <u>51</u>

5 0
2 years ago
Read 2 more answers
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