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Yanka [14]
2 years ago
15

#72 i will give brainliest to the best answer!​

Mathematics
1 answer:
Zarrin [17]2 years ago
4 0

Step-by-step explanation:

Select all of the following that are quadratic equations.

x² + 3x - 5 = 0 ✓

x² - x = 3x + 7 ✓

5x - 7 = 0 X

7x² + 14x = 0 ✓

x³ - 3x² + 1 = 0 X

x - 5 = 9x + 7 X

What is quadratic equations?

Quadratic equations is a equation that has a general form like "ax² + bx = c"

For example :

x² + 3x - 5 = 0

x² + 3x = 5

x² → ax²

3x → bx

5 → c

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The weather in a certain locale consists of alternating wet and dry spells. Suppose that the number of days in each rainy spell
Amiraneli [1.4K]

Answer:

2/9

Step-by-step explanation:

The Poisson’s distribution is a discrete probability distribution. A discrete probability distribution means that the events occur with a constant mean rate and independently of each other. It is used to signify the chance (probability) of a given number of events occurring in a fixed interval of time or space.

In the long run, fraction of time that it rains = E(Number of days in rainy spell) / {E(Number of days in a rainy spell) + E(Number of days in a dry spell)}

E(Number of days in rainy spell) = 2

E(Number of days in a dry spell) = 7

In the long run, fraction of time that it rains = 2/(2 + 7) = 2/9

7 0
4 years ago
The question is in the picture please help fast
Marrrta [24]

Answer:

<em>y = 4x - 57 </em>

Step-by-step explanation:

( x_{1} , y_{1} )

( x_{2} , y_{2} )

m = \frac{y_{2} -y_{1} }{x_{2} -x_{1} }

y - y_{1} = m ( x - x_{1} )

~~~~~~~~~~~~~~~

( 15 , 3 )

( 19 , 19 )

m = \frac{19-3}{19-15} = 4

y - 3 = 4 ( x - 15 )

<em>y = 4x - 57</em>

5 0
3 years ago
What percent of 0.2 gram of 32 mg
MAXImum [283]

Answer:

625

Step-by-step explanation:

First, you have to convert 0.2 grams to mg.  To do this, multiply 0.2 by 1000.  This yield 200.  Now 200 is what percent of 32.  

200 * 100 / 32

= 625

7 0
3 years ago
Given points A(0, 0), B(3, 2), and C(−2, 3), which statement is true?
anyanavicka [17]

Answer:

AB is parallel to AC

Step-by-step explanation:

the product of the gradients of perpendicular line should be -1

AB=2/3

AC=-3/2

2/3*-3/2=-1

=-1

7 0
3 years ago
CAN SOMEONE PLEASE HELP ME PLEASE AND THANK YOU
padilas [110]

Answer:

A.) Increasing

Step-by-step explanation:

I hope this helps you :)

5 0
4 years ago
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