MATHEMATICS
MIDDLE SCHOOL

Answer:

Answer:

The mean absolute deviation for the test scores 84·5

Step-by-step explanation:

6 students have score marks in test

- 88
- 87
- 91
- 70
- 72
- 99

Total marks of 6 students is 507

The mean absolute deviation Sum of the 6 students test score ÷ Total number of the students

507 ÷ 6

84·5

MIDDLE SCHOOL

Least to greatest -4.3, -82.5, -41 4/5, -13 1/8

-82.5, -41 4/5, -13 1/8, -4.3

MIDDLE SCHOOL

Ashton is saving money to buy a new bike. He needs $120 but has only saved 60% so far. How much more money does Ashton need to buy the scooter?

He needs to save 48$ Ashton already saved 72$.

120*.6= 72

120-72=48

MIDDLE SCHOOL

5 to the power of 3 simplified by 2.5 to the power of 2

Answer:

2500

Step-by-step explanation:

5^3 is 125/2.5 is 50 and 50^2 is 2500

Answer:

20

Step-by-step explanation:

5x5x5= 125

2.5x2.5=6.25

125÷6.25= 20

MIDDLE SCHOOL

How can you use a number line to find the sum of -4 and 6??

Help plzz

Start from 0 and count four spaces to the right to negative four. Then count six spaces to the left until you end up with your answer, which is two.

4 3 2 1 0. -1. -2. -3. -4

---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---

4 3 2 1 0. -1. -2. -3. -4

---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---

HIGH SCHOOL

Which statement does NOT explain the concept of the Doppler Effect? A) As an observer approaches a stationary sound, the sound waves are compressed, making the pitch higher. B) As an observer moves away from a stationary sound, the sound waves are stretched making the pitch lower. C) As a sound source approaches a stationary object, the sound waves are compressed, making the pitch higher. D) As a sound source moves away from a stationary object, the sound waves

The answer is D. I hope its right.

A because when wave compress they do not lower pitch

HIGH SCHOOL

The function f(x) = x2 is reflected across the x-axis and a stretch factor of 4 is applied to create a second function, g(x). Which of the following statements about the vertices of f(x) and g(x) is true? The vertex of g(x) is the same as the vertex of f(x).

The vertex of g(x) is 4 units above the vertex of f(x).

The vertex of g(x) is 4 units to the left of the vertex of f(x).

The vertex of g(x) is 4 units below the vertex of f(x).

The vertex of g(x) is 4 units to the right of the vertex of f(x).

Well, if we see the graph of x^2

the vertex is (0,0)

if we reflect it acrosss the x axis, teh vertex is still (0,0)

verteical strech doesn't change the vertex

vertex of g(x) is same as f(x)

first answer

the vertex is (0,0)

if we reflect it acrosss the x axis, teh vertex is still (0,0)

verteical strech doesn't change the vertex

vertex of g(x) is same as f(x)

first answer

HIGH SCHOOL

How do you solve v+9/3=8

You subtract 9/3 from 8 and the v= a number

V= 8-(9/3)

= (8*3-9)/3

= (8*3-9)/3

MIDDLE SCHOOL

Round each number to the nearest tenth. What is the best estimate for the answer to 382.24 – 297.28?

A.

85.1

B.

85

C.

84.9

D.

80

B,

the exact answer is 84.96, so most likely rounded,

RULES:

5 or above, shove it up.

4 or below, leave it.

9 is higher than 5, obviously.

So, B is the answer.

~MisterMistyEyed

the exact answer is 84.96, so most likely rounded,

RULES:

5 or above, shove it up.

4 or below, leave it.

9 is higher than 5, obviously.

So, B is the answer.

~MisterMistyEyed

382.24-297.28= 84.96

Answer: B 85

To round a number it must be 5 or higher so since the nine in .9 is higher than five it raises the number to 85. And there are no numbers after that. That is the rule so it goes for any other ones too like, 100th or 1000th.

Answer: B 85

To round a number it must be 5 or higher so since the nine in .9 is higher than five it raises the number to 85. And there are no numbers after that. That is the rule so it goes for any other ones too like, 100th or 1000th.

MIDDLE SCHOOL

Indicate which property is illustrated in Step 1. Step 1 5 + (3 + 10) + 0 = 5 + (10 + 3) + 0

Step 2 = (5 + 10) + (3 + 0)

Step 3 = (5 + 10) + 3

Step 4 = 15 + 3

a associative property of multiplication

b commutative property of addition

c identity property of addition

d associative property of addition

It's d because first off the operation is addition and the second part is because when you use the associative property you use the arrows.