A teacher put all her students' quiz scores up on the dot plot below. please help me

Answer:

Step-by-step explanation:

D

Step-by-step explanation:

The sample space for rolling two dice consists of 36 possible outcomes, as each of the six faces on the first die can be combined with any of the six faces on the second die.

To find the probability of showing either a prime number on the first die or a multiple of 5 on the second die, we can use the principle of inclusion-exclusion.

There are 3 prime numbers on a standard die: 2, 3, and 5. And there are two multiples of 5: 5 and 10. However, we need to be careful not to count the outcome (5,5) twice, as it satisfies both conditions.

So, the probability of showing either a prime number on the first die or a multiple of 5 on the second die is:

P(prime or multiple of 5) = P(prime) + P(multiple of 5) - P(prime and multiple of 5)

P(prime) = 3/6 = 1/2

P(multiple of 5) = 2/6 = 1/3

P(prime and multiple of 5) = 1/36

Therefore,

P(prime or multiple of 5) = 1/2 + 1/3 - 1/36

= 19/36

So the probability of showing either a prime number on the first die or a multiple of 5 on the second die is 19/36, or approximately 0.528.

Answer:

5

Step-by-step explanation:

5y=28-x

x=-2y+13

5y=28+2y-13

5y=15+2y

3y=15

y=5

Its c.

To find the area of the parallelogram formed by the points (-5, 2), (2, 0), and (4, -4), we need to first find the fourth vertex of the parallelogram. Since opposite sides of a parallelogram are parallel and have equal length, the fourth vertex can be obtained by adding the vector formed by the points (-5, 2) and (2, 0) to the point (4, -4). This gives us the fourth vertex as (11, -6).

Next, we can use the distance formula to find the lengths of the two sides of the parallelogram. The length of the side connecting (-5, 2) and (2, 0) is sqrt(45), and the length of the side connecting (2, 0) and (4, -4) is 2sqrt(5).

Finally, we can use the formula for the area of a parallelogram, which is base times height, to find the area of the parallelogram. The base of the parallelogram is the distance of sqrt(45) between (-5, 2) and (2, 0), and the height is the distance of 2sqrt(5) between (2, 0) and (4, -4). Multiplying these values together gives us an area of 42 square units, which is option C.

we need to multiply 4p by the multiples in parentheses

[tex]4p \times p = {4p}^{2} [/tex]

[tex]4p \times 7p = {28p}^{2} [/tex]

[tex]4p( p- 7p) = {4p}^{2} - {28p}^{2} [/tex]

GOOD LUCK:)

The factorized value of the equation is solved and A = 4p² - 28pq

Brackets should be expanded in the following ways to factorize an expression

For an expression of the form A = a ( b + c ) , the expanded version is given by A = ab + ac, i.e., multiply the term outside the bracket by everything inside the bracket

For an expression of the form A = ( a + b ) ( c + d ) , the expanded version is given by A = ac + ad + bc + bd, in other words everything in the first bracket should be multiplied by everything in the second.

Given data ,

Let the expression be represented as A

Now , the value of A is

A = 4p ( p - 7q )

4p(p-7q) can be expanded as follows:

4p(p-7q) = 4p * p + 4p * (-7q)

A = 4p² - 28pq

Hence , the expanded form of 4p(p-7q) is 4p² - 28pq

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Answer:

we can expect the coin to land on heads 2 times out of 4 tosses.

Step-by-step explanation:

If the probability of flipping a coin and having it land on heads is 1/2, then the probability of it landing on tails is also 1/2.When a coin is tossed 4 times, each toss is an independent event, meaning the outcome of one toss does not affect the outcome of another toss. Therefore, we can use the binomial probability formula to find the expected number of times the coin will land on heads:Expected number of heads = n * pwhere n is the number of trials (4 tosses) and p is the probability of success (1/2 or 0.5 in this case).Plugging in the values, we get:Expected number of heads = 4 * 0.5 = 2

Answer: 36 ft sq

Explanation: use P.E.M.D.A.S. and your equation

Answer: 2000 miles in 1 hour.

Answer:

i believe its 90cm^2

Step-by-step explanation:

20x3/4=15 (reduce side 1)

8x3/4=6 (reduce side 2)

6x15=90 (multiply the sides to find the area)

We know already that desk A and desk B are on the same column, since both coordinates' x factors are 7. So all we need to do now is find the difference of 2 and -8. So, we get the [very simple] equation [tex]2 - (-8) = d[/tex]. Now, when you subtract a negative, it's pretty much just adding, so we can simplify this equation to [tex]2 + 8 = d[/tex], and we all know [tex]2 + 8 = 10[/tex]. So the distance between the two desks is 10 units.

Hope this helps! If there is anything wrong feel free to point it out.

Have a nice day!

So the distance between the two desks is 10 units.

Step-by-step explanation:

desk A and desk B are on the same column, since both coordinates' x factors are 7. So all we need to do now is find the difference of 2 and -8. so we can simplify  So the distance between the two desks is 10 units.

HOPE THIS HELPS HAVE A GREAT DAY GOODLUCK

Answer:

I don't understand

Step-by-step explanation:

where are the answers?

Answer: its a :)

Explanation: since your trying get 72 on one side of the equation, you need to do the opposite of multiplication and that is division.

Answer:

x > 7.5

Step-by-step explanation:

1. Multiply the reciprocal of 4/3 to both sides (3/4)

- x> 10/1 x 3/4

- x >30/4

2. Simplify the equation:

- x > 30/4

- x > 7 2/4

7 2/4 - 7.5

ANSWER = x > 7.5

Answer: 1 st and 3rd ones

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

the formula is A=πr2!!! So since diameter is 10, 10/2 = 5 that means 5 is the radius, 5^2 = 25, 25*π = 78.54

Your welcome!

Answer: 270 students

Step-by-step explanation:

45% of the students joined a club, and there are 600 total students. To get 45% of 600, we just need to multiply 600 by the percentage in its decimal form, 0.45.

[tex]600*0.45=270[/tex] students

Answer: A square pyramid has 5 faces, 8 edges, and 5 vertices.

Step-by-step explanation:

The required answer is a square pyramid (excluding the base) has four faces. A square pyramid consists of a square base and triangular faces that meet at a common vertex.

To determine the number of faces excluding the base, we can follow these steps:

Step 1: Identify the number of triangular faces.

In a square pyramid, there are four triangular faces that connect each corner of the square base to the apex (the top vertex). These triangular faces do not include the base.

Step 2: Determine the total number of faces.

In addition to the triangular faces, we need to consider the base of the pyramid. The base is a square, and it is not counted when we exclude the base. Therefore, the number of faces excluding the base is the same as the number of triangular faces.

Step 3: Calculate the number of faces.

Since we determined that a square pyramid has four triangular faces, the square pyramid (excluding the base) has four faces.

Hence, a square pyramid (excluding the base) has four faces. A square pyramid consists of a square base and triangular faces that meet at a common vertex.

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Answer:

Step-by-step explanation:

1/2 = 3/6 (on time)      

1/3 = 2/6 (late)

1/6 = 1/6 (early)

3 times 2 is 6. You need the same denominators. What you do to the bottom you do to the top. So, 3x2=6 and 1x2=2. Therefore, you have 2/6. The 2 cubes can be used to show the probability of the train being late because we now know it is late 2/6 times and either early or on time 4/6 times.

To find the fourth vertex of the rectangle, we can start by drawing a diagram:

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

        |

        |    (2,4)

        |

--------.--------

        |

(?, ?)   |    (2,1)

        |

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

We know that opposite sides of a rectangle are parallel, so the fourth vertex must be located on the same horizontal line as the point (2, 1) and the same vertical line as the point (-4, 4). Therefore, the fourth vertex must be located at (-4, 1).

To find the dimensions of the rectangle, we can find the distance between the points (2, 1) and (2, 4) to get the length of one side, and the distance between the points (2, 1) and (-4, 1) to get the length of the other side.

Length = 4 - 1 = 3

Width = 2 - (-4) = 6

So the dimensions of the rectangle are 6 by 3.

To find the area of the rectangle, we can multiply the length and width together:

Area = Length x Width = 6 x 3 = 18 square units.

Answer: x=1

Step-by-step explanation:

Since the angles are vertical that means they have to be equal.

So we can set the two equations equal to each other.

10 - x = 4x + 5

10 = 5x + 5

5 = 5x

x=1

Answer:

10 - x = 4x + 5

10 - 5 = 4x - x

     5  =  3x

      x = 1.6

         x = 1.6      

angle 1 =  10-1.6

            = 8.4

angle 2 = 4(1.6)+5

             = 11.4

Answer:

The percentage of earrings is 32%, which means that the remaining percentage of jewelry items that are not earrings is 100% - 32% = 68%. Therefore, the equation that represents the relationship between the number (n) of jewelry items that are not earrings and the total number (t) of jewelry items produced is: n = 0.68t So, the correct answer is B.

B) n = 0.68t.

If 32% of the jewelry items produced are earrings, then 68% of the jewelry items produced are NOT earrings. Therefore, the equation for n is n = 0.68t.

Answer: CCCCCCCCC

Step-by-step explanation:

Answer:

the water tower is 143 3/4 feet

Step-by-step explanation:

5ft 9in height

4ft silhouette

Convert 9in to ft = 9/12 so height = 5 9/12 = 23/4

Ratio of height to silhouette is (23/4) / 4

X = 100 the height of the building

Set up a proportion (23/4)/4 = X/100

X = 143 3/4 ft

Answer:

Step-by-step explanation:

Answer:

i think its either 5 or 5.12

im not so sure but i hope it helps

Answer:

Step-by-step explanation:

Well if the equation is x-4/3>10 first assume the greater than symbol is an equal symbol.

Then add 4/3 to either side to get x>11 and 1/3 or 11.3333 repeating

Answer: the same as them

Step-by-step explanation:

Answer:

1 and 4

Step-by-step explanation:

Answer:

A. EAJ and IAH

Step-by-step explanation:

The answer is A. EAJ and IAH because if you notice, angle "EAJ" starts at "E", goes down to "A", and to the right to "J". Now, if you would again notice, angle "IAH" stars at "I", goes up to "A", and to the left to "H".

The definition of a verticle angle are angles opposite each other where two lines cross.

I have attacked an image below of an example of a verticle angle. If you would notice, the image of the vertical angle I attached looks the same as option "A. EAJ and IAH".

Have a nice day! <3