Sabrina was asked by a classmate why she would place hydrogen in the first column of the periodic table. Which of the following reasons could she give as a response?

I. Hydrogen combines with chlorine in the same atomic ratio as sodium.

II. Hydrogen is a gas at room temperature.

III. Hydrogen forms diatomic molecules.
wich one or ones is the correct answer

Answer:

[tex]option \: e. \: is \: correct[/tex]

Step-by-step explanation:

[tex]first \: you \: need \: to \: know \: that \to \\ points : \\ (x_{1}, \: y_{1}) = (1, \: - 1) \\x_{1} = 1 \\ y_{1} = - 1\\ if \: y - 2x \leqslant - 3 \\ if \: x = 1 \: then : \\ y \leqslant - 1 \\ if \: you \: check \: it : \\ the \: point \: (1, \: - 1) \: is \: correct \: cos : \\ the \: value \: of \: y \: is \: exactly \: less \: than \: or \: equal \: to \: - 1. \\ to \: proove \: that.... \\ just \: plugin \: the \: values \: of \: x_{1} \: and \: y_{1}.[/tex]

♨Rage♨

Answer: (if you could mark me brainliest that'd be great!)

1. -45

2. -7

3. 13/2

Step-by-step explanation:

1.  [tex]-(-5)^{2} +4(-5)[/tex]

evaluate the power to get  [tex]-25+4(-5)[/tex]

then multiply the numbers to get -25 - 20

calculate the difference

answer is -45

2. [tex](-3)^{2} -4(-1)(-4)[/tex]

evaluate the power to get  [tex]9-4(-1)(-4)[/tex]

calculate the difference of 9-16 (which is the simplified version of [tex]9-4(-1)(-4)[/tex])

answer is -7

3. [tex]-(-1/2)-3(-2)[/tex]

remove the parenthesis

multiply to get 1/2+6

calculate the sum

answer is 13/2

Answer:

$79.12

Step-by-step explanation:

Given the following :

Cost per order = $12.80

Number of people = 5

Gratuity left for waitress = 15%

Tax rate = 7.5%

Total bill before tax:

$12.80 * 5 = $64

Bill after tax:

$64 * (1 + 7.5%)

64 - 4.8

= $68.80

Final amount paid:

After tax bill + (after tax bill * Gratuity rate)

$68.80 + (68.80 * 15%)

= $79.12

Answer:

C, 2:3

Step-by-step explanation:

There are four sections for blue, and six for red. Simplifying this, you would get 2 : 3

Answer:

In the affinely extended real number system (which is a mouthful meaning "the real numbers, and negative infinity, and positive infinity"), absolutely: positive infinity is the highest number. In other number systems, we're not so lucky.

:)

Step-by-step explanation:

Answer:

The answer is C: (2, -1).

Answer:

60

Step-by-step explanation:

Answer:

2 I think

Step-by-step explanation:

Answer:

3:1 and 12:4

Step-by-step explanation:

for every 3 blue circles there is 1 orange circle. to keep the saem ratio simply multiply by 4

Hope this helps Happy Halloween

Answer:7/9=3/4. 6/11=1/2. 3/13=1/4

Step-by-step explanation:

YOUR WELCOME

Answer:

7/9=3/4. 6/11=1/2. 3/13=1/4

Step-by-step explanation:

Answer:

okay this is easy the answer would be B

Step-by-step explanation:

Answer:

Add 3 to both sides.

Step-by-step explanation:

Answer:

Add 3 to both sides.

            18  

Step-by-step explanation:

Answer:

No

Step-by-step explanation:

Because of the negative -5^3 is -125 not 125 which makes the statement false

Answer:

33

Step-by-step explanation:

Answer:

33

Step-by-step explanation:

A ratio can be used to answer this question.  The equation below shows that you travel 330 feet in 10 seconds on the left side and you are trying to determine how many feet you travel in 1 second on the right side.

330 feet               X feet

_______       =   _______

10 seconds           1 second

X is the answer you are looking for.  To solve for X, you use cross multiplication.  Therefore, you have this equation:

10 times X = 330 times 1 or simplified to 10X = 330

To solve for X, you divide both sides of the equation by the number 10.

The left side of the equation becomes 1X or X and the right side becomes 33.

So X (the answer) is 33 feet.

Answer:

3. C.) $15,500 4. C.) 45 mi

Step-by-step explanation:

I know you said you don't need work but I want to make sure you're still learning. So for the first one you just recognize the pattern in the chart. The numbers are going up 2 for every number, so if 36 is equivalent to 11, then 38 would be 12, 40 would be 13 and so on. Eventually, we get to 44 being equivalent to 15, we don't wanna go all the way up to 46 so we stop at 15 and only add half to our fifteen, so we end off with 15.5. Then we multiply that by 1000 and get 15,500. Then we just add our units, which in this case is dollars to get $15,500. For the second problem we just divide 35 mi by 7 hours and we get 5, we now know that Elise is traveling at 5 miles per hour. Then we multiply 5 by 9 to get 45. Don't forget to add your units though! This time our unit is miles, so we get our final answer of 45 mi.

The range contain all the real numbers greater than or equal to –3 .

The range of the function is the range of all the y values, from least to maximum. Substitute all possible values of x into the provided expression of y to see whether it is positive, negative, or equal to other values.

We have a graph open upward.

Now, we can see from the graph that the function's maximum y value is -3 and that the graph keeps going up.

So, all real values greater than or equal to -3 are included in the range.

Thus, the range contain all the real numbers greater than or equal to –3

Learn more about Range of Function here:

https://brainly.com/question/2043285

#SPJ7

Answer:

The Slope is -5/2

Y-intercept is -25

The equation is y=(-5/2)x-25

Step-by-step explanation:

Choose a first point and a second point

Remember points are (x,y)

Use (y₂ - y₁)/(x₂ - x₁)

y-intercept: The initial value of a linear relationship, the place that a linear equation crosses the y axis, represented by the letter b, the point (0,b).

Linear Relationship -the equation that represents a straight line often represented by y=mx+b where m is the slope and b is the y-intercept.

Answer:

Explanation:

4 2/5 - 3 1/3 = ?

Hope this helps! <3

Answer: Answer is 2.0

Step-by-step explanation: Please mark brainliest! And thanks please!

Answer:

x<1

Step-by-step explanation:

Answer:

x<1

Step-by-step explanation:

Answer:

The students on the bus is the first one and the other is the third.

Step-by-step explanation:

It is

Answer:

I'm not sure, but I am thinking it is 1 5/6y

Step-by-step explanation:

The simplified form of the given expression is [tex]\frac{11y}{6}[/tex] OR [tex]1\frac{5}{6}y[/tex]

From the question,

We are to simplify the expression 2/3y+1/6y+y

First, we will write the given expression properly

The expression can be written as

[tex]\frac{2}{3} y+\frac{1}{6} y+ y[/tex]

The expression can be simplified as follows

[tex]\frac{2}{3} y+\frac{1}{6} y+ y[/tex]

This becomes

[tex]\frac{2 \times 2y + 1 \times 1y + 6 \times y}{6}[/tex]

Then, we get

[tex]\frac{4y+1y+6y}{6}[/tex]

[tex]\frac{11y}{6}[/tex]

OR

[tex]1\frac{5}{6}y[/tex]

Hence, the simplified expression is [tex]\frac{11y}{6}[/tex] OR [tex]1\frac{5}{6}y[/tex]

Learn more here: https://brainly.com/question/24540711

Answer:

2

Step-by-step explanation:

It should take the rabbit 2 months because if you change the fractions to mixed numbers 5/2=2 and 1/2. and if you change 15/4 to a mixed number it will be 4 and 1/2. divide 2 and 1/2 by 4 and 1/2 and you get 2.

Answer:

-9

Step-by-step explanation:

Answer:

The 30th Person!

Step-by-step explanation:

6 TIMES 5