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max2010maxim [7]
3 years ago
13

What is the graph of each function rule? 2x²– 2​

Mathematics
1 answer:
alexandr1967 [171]3 years ago
4 0

Step-by-step explanation:

Graph the parabola using the direction, vertex, focus, and axis of symmetry.

Direction: Opens Up

Vertex: (0,−2)

Focus:

(0 , - \frac{15}{8})

Axis of Symmetry:

x

=

0

Directrix: y =

-  \frac{17}{8}

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I SUCK IN THIS LESSON. PLEASE PLEASE HELP NO LINKS!
nata0808 [166]

Answer:

42

Step-by-step explanation:

<u>Area of triangle:</u>

A = 1/2bh

A = 1/2(2)(3)

A = 3

<u>Area of rectangle:</u>

A = bh

A = 11(3)

A = 33

<u>Area of triangle:</u>

A = 1/2bh

A = 1/2(3)(4)

A = 6

<u>Combined:</u>

3 + 33 + 6

42

8 0
2 years ago
How to solve 4x+7=15
Over [174]
<span>4x+7=15

First step is to subtract 7 from both sides to get rid of it.
4x + 7 - 7 = 15 - 7
4x = 8

Now all you have to do is divide both sides by 4.
4x/4 = 8/4
x = 2

The answer is x = 2.</span>
7 0
3 years ago
Read 2 more answers
Are the following polygons similar explain
ra1l [238]
<h3>Answer: No, they are not similar.</h3>

Technically, we don't have enough info so it could go either way.

==========================================================

Explanation:

We can see that the sides are proportional to each other, but we don't know anything about the angles. We need to know if the angles are the same. If they are, then the hexagons are similar. If the angles are different, then the figures are not similar.

Right now we simply don't have enough info. So they could be similar, or they may not be. The best answer (in my opinion) is "not enough info". However, your teacher likely wants you to pick one side or the other. We can't pick "similar" so it's best to go with "not similar" until more info comes along the way.

4 0
2 years ago
Theresa Morgan a chemist has a 10% hydrochloric acid solution and a 65% hydrochloric acid solution. How many liters of each shou
prisoha [69]

<u>ANSWER: </u>

170 liters of 10% hydrochloric acid must be mixed with 1700 liters of 65% hydrochloric acid solution to obtain 1870 liters of 60% solution.

<u>SOLUTION: </u>

First, set up a table. Fill in the unknowns with variables x and y. The table is attached below

From this, we can easily set up the two equations.  

Sum of values of two acids = Value of mixture  

0.1x + 0.65y = 1122  

For convenience, we'll multiply the entire equation by 100,

10x + 65y = 112200   ------ (1)  

Now, Sum of amounts of each acid = Amount of mixture  

x + y = 1870  ---------(2)

multiply (2) with 10 for easy calculation and derive the equation into one variable.

10x + 10y = 18700  

Subtracting equation (2) from (1),  

( + ) 10x + 65y = 112200

( − ) 10x + 10y = 18700

we get the solution as,

0 + 55y = 93500

Thus, 55y = 93500

y = 1700

Substituting y = 1700 in (2),

x + 1700 = 1870  

x  = 1870 - 1700  

x  = 170  

So, we have x = 170 and y = 1700

We can conclude that 170 liters of 10% hydrochloric acid must be mixed with 1700 liters of 65% hydrochloric acid solution  to obtain 1870 liters of 60% solution.

4 0
3 years ago
Express the area A of a right triangle as a function of the height h if the base of the triangle is twice it's height
borishaifa [10]
Base = 2 x height (b = 2h)
Area = 1/2 x base x height = 1/2 x 2h x h = h x h = h^2
8 0
3 years ago
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