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scZoUnD [109]
3 years ago
9

Please answer this correctly

Mathematics
1 answer:
krok68 [10]3 years ago
6 0

Answer: it decreased by 1

Step-by-step explanation: 8+3+6+8+7+9+1= 42/7 = 6 8+3+6+1+7+9+1= 35/7 = 5

6-5=1 so the mean decresed by 1

BRO THIS IS BASIC 6TH GRADE MATH ON IXL ?!?!?!?!?!!!!!!!!!!!!

you really couldn't solve this /-_-/ ?

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1. Find the Length of Line AD A(6, 2) D(-3, -2)
densk [106]

Answer:

5

Step-by-step explanation:

\sqrt{(2-(-2))^{2}  + (6-(-3))^2}

=\sqrt{4^{2}  + 3^{2} } \\

=\sqrt{25}

=5

8 0
3 years ago
Question 8: The equation of motion of a particle is
lawyer [7]

Answer:

D) 22\:\text{m/s}^2

Step-by-step explanation:

Acceleration is the derivative of velocity, which is the derivative of position, so we must differentiate the function twice:

Position of Particle: s(t)=t^3-4t^2+2t+8

Velocity of Particle: v(t)=3t^2-8t+2

Acceleration of Particle: a(t)=6t-8

After t=5 seconds, the acceleration of the particle is a(5)=6(5)-8=30-8=22\:\text{m/s}^2

4 0
3 years ago
What is the common denominator of (5/x^2-4) - (2/x+2) in the complex fraction (2/x-2) - (3/x^2-4)/(5/x^2-4) - (2/x+2)
PIT_PIT [208]

9514 1404 393

Answer:

  • common denominator: (x² -4)
  • simplified complex fraction: (2x +1)/(9 -2x)

Step-by-step explanation:

It is helpful to remember the factoring of the difference of squares:

  a² -b² = (a -b)(a +b)

__

Your denominator of (x² -4) factors as (x -2)(x +2). You will note that one of these factors is the same as the denominator in the other fraction.

It looks like you want to simplify ...

  \dfrac{\left(\dfrac{2}{x-2}-\dfrac{3}{x^2-4}\right)}{\left(\dfrac{5}{x^2-4}-\dfrac{2}{x+2}\right)}=\dfrac{\left(\dfrac{2(x+2)}{(x-2)(x+2)}-\dfrac{3}{(x-2)(x+2)}\right)}{\left(\dfrac{5}{(x-2)(x+2)}-\dfrac{2(x-2)}{(x-2)(x+2)}\right)}\\\\=\dfrac{2(x+2)-3}{5-2(x-2)}=\boxed{\dfrac{2x+1}{9-2x}}

3 0
3 years ago
Mariah is incorrect because ?
Snowcat [4.5K]
She is incorect because
(a+b)^2 =a^2 +b^2+ 2ab

a + b
____###### If we sqare this will get:


____######
|.a^2|. ab |
|___ |######
# #. #
# ab #. b^2 #
#___ ######

7 0
3 years ago
Jon’s Summer baseball league has 36 thirteen -year-olds and 48 fourteen year-olds. Write the ratio of 13-year-olds to 14-year-ol
FinnZ [79.3K]

Answer:

These are the forms to write the ratio. Please read the explanation.

<u>a. 3/4</u>

<u>b. 3:4</u>

<u>c. 3 ÷ 4</u>

<u>d. Ratio of 3 to 4</u>

Step-by-step explanation:

1. Let's check the information given to resolve the question:

Number of 13-year olds = 36

Number of 14-year olds = 48

2. Writing the ratio of 13-year-olds to 14-year olds in all three forms:

We can say that there are:

36/48 13-year olds to 14-year olds but we notice immediately that we can simplify that ratio this way:

36/48 = 18/24 (Dividing by 2) = 9/12 (Dividing by 2 again) = 3/4 (Dividing by 3)

We can conclude that the ratio of 13-year-olds to 14-year olds is 3/4 and we can write it these ways:

<u>a. 3/4</u>

<u>b. 3:4</u>

<u>c. 3 ÷ 4</u>

<u>d. Ratio of 3 to 4</u>

8 0
4 years ago
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