I'm really confused with all three of these questions.

Examples to help you out: Pb(NO3)2
(multiply the number after the parentheses. The elements values are 1. If the element (letter) has a number (O3) you'll multiply it and it's value will change. Ox3=3.

Pb=1
N=2
O=3
I need help with these problems

Answer:

4

Step-by-step explanation:

Answer:

1,0 B

Step-by-step explanation:

Answer: C

Step-by-step explanation: If you add both expressions together you get 3x+4 but then because it would be on both sides of the rectangle it would be times 2 of that expression so 3x+4 times two would be 6x+8

Answer:

The original data set:

57, 58, 61, 66, 71, 77, 82, 91, 95, 100, 102, 105

Finding the median:

77 and 82 are the 2 middle numbers

57, 58, 61, 66, 71, 77, 82, 91, 95, 100, 102, 105

Do 77 + 82 which equals 159

Then do 159 ÷ 2 which would be 79.5

The median for the original data set would be 79.5

Then adding the 60° would make a new data set:

57, 58, 60, 61, 66, 71, 77, 82, 91, 95, 100, 102, 105

The middle number would be 77

57, 58, 60, 61, 66, 71, 77, 82, 91, 95, 100, 102, 105

So the median for the second data set would be 77.

Step-by-step explanation:

Hope this helps you a little, you're welcome

Answer:

16 inches

Step-by-step explanation:

We can use the Pythagorean theorem to find the height of the television. The Pythagorean theorem states that in a right triangle, the sum of the squares of the lengths of the two smaller sides is equal to the square of the length of the longest side (the hypotenuse). In this case, the diagonal of the television is the hypotenuse and the width and height are the other two sides.

So, we can set up the equation as follows:

a^2 + b^2 = c^2

where a is the width (22 inches), b is the height, and c is the diagonal (27 inches).

We can solve for b:

b^2 = c^2 - a^2

b^2 = 27^2 - 22^2

b^2 = 729 - 484

b^2 = 245

b = √245

b = 15.56 inches (rounded to two decimal places)

So, the height of the television to the nearest inch is 16 inches.

Answer:

69-69

Step-by-step explanation:

ibba niay aniat

Answer:

36/4

Step-by-step explanation:

36/4 has a denominator of 4

Is an improper fraction

And is equal to 9(value is between 5 and 10)

Answer:

no

Step-by-step explanation:

max isnt correct

Answer:

no

Step-by-step explanation:

2/3 * 3/8 = 1/4= 0.25

Answer:

Step-by-step explanation:

2(8+21)

Answer: 338

Step-by-step explanation: Spelled result in words is thirty-three eighths (or four and one-eighth).

Answer:

Step-by-step explanation:

23 meters

Hello:

Let's consider what the question asks for:

 --> find the value of 'x'

The two angles given are supplementary

 --> as together

    --> they form a straight line which represents a total of 180 degrees

        --> in mathematical form

             [tex](x+19)+(7x+9)=180\\x+19+7x+9=180\\8x+28=180\\8x=152\\x=19[/tex]

Answer: 19

Answer:

X = 69

Step-by-step explanation:

You add the 11x and 58

Answer: hope this helps ♡      (i wont mind getting brainliest )

x = 3

Step-by-step explanation:

z° and 89° are two opposite angles.

z° = 89°

89° + 89° + (11x + 58)° + (11x + 58)° = 360° (adds up to 360° coz its a circle)

178° + (11x + 58)° + (11x + 58)° = 360°

178° + 58° + 58° + (11x + 11x)° =  360°

178° + 116° + 22x° =  360°

294° + 22x° = 360°

294° - 294° + 22x° = 360° - 294°

22x = 66

22x ÷ 22 = 66 ÷ 22

x = 3

(double check: 11×3 = 33    2×(33+58)+178=360° ✓)

Answer: Hi! Your price would be $55.55.

Step-by-step explanation:

When you add a 6% sales tax to $52.41, it would be an extra $3.14 dollars. :)

Answer:

$55.55

Step-by-step explanation:

Answer:

Step-by-step explanation:

2 at the top

Answer:

21

Step-by-step explanation:

becuase x3+y3+z3=k, with k being all the numbers from one to 100, is a Diophantine equation that's sometimes known as "summing of three cubes."

Answer:

40.5 inches

Step-by-step explanation:

I’m not sure if this is correct or not but my thinking is that you just add 26.9, 8.5, and 5.1 together since it says “How much more snow fell in the one day storm in 2006 than normal falls in February and March combined?” And combined basically means all together.

Answer: 13.3 more inches of snow fell in one day storm than normally falls in February and March combined.

February and March combined: 8.5+5.1 = 13.6

Since the question asked how much more, that means you subtract:

26.9 - 13.6 = 13.3

hope this helped =)

-YinAhara

Answer:V

Step-by-step explanation:

because

1.[tex]184 cm^{3}[/tex]            2. [tex]187cm^{3}[/tex]         3.[tex]235 ft ^{3}[/tex]

In the first question firstly, We will find the volume of the hemisphere with a diameter of 8 cm.

We will find the volume of the hemisphere by using the formula that is,[tex]2\pi r ^{3}/3[/tex].

Which gives us, [tex]134.09 cm^{3}[/tex].

Now we will find the volume of the inverted cone with the formula,[tex]\pi r^{2}h/3[/tex].

Which gives [tex]50.28 cm^{3}[/tex].

Adding both give [tex]184.57 cm^{3}[/tex].

Rounding [tex]184 cm^{3}[/tex]

In the second question firstly, We will find the volume of the hemisphere with a radius of 3cm.

we will find the volume of the hemisphere by using the formula that is,    [tex]2\pi r^{3} /3[/tex].

Which gives us, [tex]56.57 cm^{3}[/tex].

Now we will find the volume of the cylinder with the formula, [tex]\pi r^{2}h[/tex].

Which gives [tex]132 cm^{3}[/tex].

Adding both give [tex]188.57 cm^{3}[/tex].

Rounding [tex]187 cm^{3}[/tex].

In the last question, we will find the volume of the cone with a radius and height of 7ft.

We will find the volume of the cone by using the formula that is, [tex]\pi r^{2}h/3[/tex].

Which gives us, [tex]102.66ft^{3}[/tex].

Now we will find the volume of the cylinder with the formula, [tex]\pi r^{2}h[/tex].

Which gives [tex]132ft^{3}[/tex].

Adding both give [tex]234.66ft^{3}[/tex].

Rounding [tex]235ft^{3}[/tex] .

Read more about the volume of 3D shapes: https://brainly.com/question/12105152

Answer: b

Step-by-step explanation:

add them then divide by the similay

Answer:

She can make 3 whole shirts.

First shirt - 2/7 leaving 5/7Second shirt - 2/7 leaving 3/7Third shirt - 2/7 leaving 1/7

Step-by-step explanation:

Answer:

The vertex of the graph of the equation $y = 3x^2 - 6x + 7$ is the point $(1, 4)$.

Step-by-step explanation:

The vertex of the graph of a parabolic function $y = ax^2 + bx + c$ is given by the formula:

$x = \frac{-b}{2a}$

where a, b, and c are constants and x is the x-coordinate of the vertex.

For the given equation $y = 3x^2 - 6x + 7$, we have a = 3, b = -6, and c = 7. So, we can use the formula to find the x-coordinate of the vertex:

$x = \frac{-b}{2a} = \frac{-(-6)}{2(3)} = \frac{6}{6} = 1$

So, the x-coordinate of the vertex is 1. To find the y-coordinate, we substitute the value of x back into the original equation:

$y = 3(1)^2 - 6(1) + 7 = 3 - 6 + 7 = 4$

So, the vertex of the graph of the equation $y = 3x^2 - 6x + 7$ is the point $(1, 4)$.

Answer:

I think it’s subtraction

Step-by-step explanation:

Answer:

Question #1: 17 Miles

Question #2: 10 units

Step-by-step explanation:

Question #1: Here we are using the Pythareom Theorem [tex]\sqrt{a^{2}+b^{2} } =c^{2}[/tex]

We must plug in the horizontal distance (x) from a to c (-4 to 4 = 8).

Then we take the vertical distance (y) from a to c (-6 to 9 = 15).

Plug it all into the Pythareom Theorem[tex]\sqrt{8^2+15^2} =17[/tex]

Question 2: We do the same thing just using the new values

Step-by-step explanation: Two quantities have a proportional relationship if they can be expressed in the general form y = kx, where k is the constant of proportionality. In other words, these quantities always maintain the same ratio. That is, when you divide any pair of the two values, you always get the same number k.

Answer:25 game tickets for $10

Step-by-step explanation:

0.50 * 25 = $12.5

so the second option is more expensive so the first one is correct.

Answer:

- 4y - 7

Step-by-step explanation:

We know that,

( - ) × ( - ) = ( + )

( - ) × ( + ) = ( - )

( + ) × ( + ) = ( + )

Accordingly, let us solve the above expression.

- 4y - 4 + ( - 3 )

Solve the brackets.

- 4y - 4 - 3

Combine like terms.

- 4y - 7

Answer:

[tex] \sf \: -4y - 7 [/tex]

Step-by-step explanation:

Now we have to,

→ Simplify the given expression.

The expression is,

→ -4y - 4 + (-3)

Let's simplify the expression,

→ -4y - 4 + (-3)

→ -4y - 4 - 3

→ -4y - (4 + 3)

→ -4y - (7)

→ -4y - 7

Hence, the answer is -4y - 7.

Answer: the slope, change in Y over change in X simplified

Answer:

Step-by-step explanation:

Multiply those numbers and then when you multiply the numbers plug it i  with m to the power of 3.

um… I actually don’t know the actual answer, but I hope this will help

Step 1: break down the compound shape into different components.

Step 2: determine the volume of each basic shape.

Step 3: combine the volumes of all the basic shapes

Step 4: write the solution in cubic units.

Also the volume of the three green rectangular prisms is 120 cubic units, I think.