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Troyanec [42]
3 years ago
6

Determine the direction that this parabola opens y=2x^2-4x-6 Down or up

Mathematics
1 answer:
dimaraw [331]3 years ago
6 0

Answer: The parabola opens upwards.  

Step-by-step explanation:

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What is the third quartile of this data set? 21,24,25,28,29,35,37,39,42
tangare [24]

Answer:

121.5

Step-by-step explanation:

Find the mean of the last 4 numbers.

8 0
3 years ago
Is 4y=16x a Direct variation
gizmo_the_mogwai [7]

In the given equation, as the value of <em>y</em> increase, the value of <em>x</em> also

increases.

  • Yes, 4·y = 16·x is a direct variation

Reasons:

A direct variation is a relationship that exists between two variables. It is

also known as a direct proportion which can be expressed as; y = k·x

Where <em>k</em> is a number

The given equation is 4·y = 16·x

Dividing both sides by 4 gives;

\displaystyle \frac{4 \cdot y}{4}  = \frac{16 \cdot x}{4} = \frac{4 \times 4 \cdot x}{4}

Which gives;

y = 4·x

Comparing the above equation with the equation for a direct variation gives;

y = 4·x

y = k·x

Therefore;

k = 4

The equation, y = 4·x, and therefore, the equation from which it is derived, 4·y = 16·x, is a direct variation.

Learn more about direct variation here:

brainly.com/question/6499629

6 0
2 years ago
Answer these questions
vampirchik [111]
Define natural hazard?

A natural hazard is a natural phenomenon that might have a negative effect on humans and other animals, or the environment. Natural hazard events can be classified into two broad categories: geophysical and biological.

What is the difference between tectonic hazards and weather hazards ?

Tectonic hazards occur when the Earth's crust moves. For example, when the plates move, friction can cause them to become stuck. Tension builds until the plates release, which leads to an earthquake. Climatic hazards occur when a region has certain weather conditions, for example heavy rainfall can lead to flooding.

why do convection currents in the mantle occur?

Heat rising and falling inside the mantle creates convection currents generated by radioactive decay in the core. The convection currents move the plates. Where convection currents diverge near the Earth's crust, plates move apart
4 0
3 years ago
What is the solution to the inequality? 17 &lt; 9 + x
dezoksy [38]

Answer:

x > 8

Step-by-step explanation:

Given

17 < 9 + x ( subtract 9 from both sides )

8 < x , hence

x > 8

7 0
3 years ago
15 = 3h-9<br> Please explain
Afina-wow [57]
The answer is h=15+9/3=8
6 0
3 years ago
Read 2 more answers
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