IXL AA.3 7th grade! (click photo)

Answer:

1).  -12

2).  -6

Hope this helps<3

Answer: VTU and HGF

Step-by-step explanation:

Answer:

0.4 > 0.19

Step-by-step explanation:

you can view it as 40 and 19, so which is bigger 40 or 19?

Answer: [tex]y= 2300(1.072)^t[/tex]

Step-by-step explanation:

The exponential growth equation : [tex]y=A(1+r)^t[/tex] , where A=initial value, r= rate of growth , t= time.

Given: A = 2300,  r= 7.2% = 0.072  

Let t be the number of hours since the start of the study. Let y be the number of bacteria cells.

then, the exponential function showing the relationship between y and t will be:

[tex]y= 2300(1+0.072)^t\\\\\Rightarrow\ y= 2300(1.072)^t[/tex]

Answer:

24.5 points

8 points

Step-by-step explanation:

khan academy

The mean is 1.95 and the standard deviation is 2.41 for the given distribution.

A standard deviation (σ) is a measure of the distribution of the data in reference to the mean.

The given data as :

Correct question (x)  Probability                

        0                           0.05  

        1                            0.20

        2                           0.50

        3                           0.25  

In this scenario, we must calculate the mean, which is the product of the correct question and the probability. The mean will then be subtracted from the correct question. multiply the difference between the correct question and the mean by probability. This indicates the pay variance. off's The standard deviation of the distribution is given by taking the square root of the variance of the correct question.

Mean = 0 × 0.05  + 1 × 0.20 + 2 × 0.50 + 3 × 0.25

Mean  = 1.95

Variance = (0 - 1.95)² + (1 - 1.95)² + (2 - 1.95)² + (3 - 1.95)²

Variance = 3.8025 + 0.9025 + 0.0025 + 1.1025

Variance = 5.81

Standard deviation = √(Variance)

Standard deviation = √(5.81)

Standard deviation = 2.41

Thus, the mean is 1.95 and the standard deviation is 2.41 for the given distribution.

Learn more about the standard deviation here:

brainly.com/question/16555520

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Answer:

5

Step-by-step explanation:

2/3 of 12 equals 8. 8 - 3 = 5

Answer:

x=7

Step-by-step explanation:

Answer:

7

Step-by-step explanation:

Let's solve your equation step-by-step.

58=9x−5

Step 1: Flip the equation.

9x−5=58

Step 2: Add 5 to both sides.

9x−5+5=58+5

9x=63

Step 3: Divide both sides by 9.

9x/9 = 63/9

x=7

Answer:

its negative 8

Step-by-step explanation:

you can see it there

Using translation concepts, the image of point (0,6) after a rotation of 90° counterclockwise about the origin is (-6,0).

A translation is represented by a change in the function graph, according to operations such as multiplication or sum/subtraction in it's definition.

The rule for a 90º counterclockwise rotation about the origin is:

(x,y) -> (-y,x).

Hence, the image of point (0,6) is given by:

(0,6) -> (-6,0).

More can be learned about translation concepts at https://brainly.com/question/4521517

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Answer:

fraction-3/10

decimal-.3

Answer:

Step-by-step explanation:

There are a few ways you could look at this, but this is the way that I prefer:

A percent is essentially already a fraction out of 100. 100% = 1. Therefore, 30% = [tex]\frac{30}{100}[/tex].

To simplify this, divide the top and the bottom by 10. This equals [tex]\frac{3}{10}[/tex]. Because 3 is a prime number and 10 is not divisible by 3, this is completely simplified.

To find the percent of any fraction, the easiest way is to simply divide the top by the bottom.

3/10 = 0.3

This is your final answer, as there is no number in the hundredth place or beyond to concern yourself with.

Answer: B

Step-by-step explanation: Used a calc

Answer:

14

Step-by-step explanation:

Answer:

Step-by-step explanation:

[tex]Consider \ the \ following \ series[/tex]

[tex]\lim_{n \to \infty} \sum \limits ^n_{i=1} x_i \ In ( 1+ x_i^2) \Delta x , [2,7][/tex]

[tex]Let's \ recall \ the \ explanation \ of[/tex] d[tex]efinite[/tex] [tex]\ integral \ in \ terms \ of \ Riemann \ sum[/tex]

[tex]\int^b_a \ f(x) \ dx = \lim_{n \to \infty} \sum \limits ^n_{i=1} \ f(x_i) \Delta x , \ where \ \Delta x = \dfrac{b-a}{n}[/tex]

[tex]By \ efinition, \ the \ limit \ is \ then \ expressed \ as \ integral[/tex]

[tex]\lim_{n \to \infty} \sum ^a_{i=1} \ x_i \ In (1+x_i^2) \Delta x = \int^7_2 xIn (1+x^2) \ dx[/tex]

Answer:

36

Step-by-step explanation:

80 * .45 = 36

Answer:There are 36 pop songs on your playlist

Step-by-step explanation:

Answer:

it is a it's a

Step-by-step explanation:

Answer:

D (I think)

Step-by-step explanation:

If you multiply -4 times -2 you get positive 8 and the five stays the same so it would be 8/5. If you multiply -4 times 3x you would get -12x. So the total equation would read 8/5 - 12x

Answer:

I don't know the answer but I suggest u get help from a tutor

they help a LOT

Answer: 28.3 %

Step-by-step explanation:

60-43 = 17

17/60 = 0.283

Answer:

maybe (B)

Step-by-step explanation:

Answer:

B!

Step-by-step explanation:

Answer:  

y= 8(5 * 0.7) ^ 5

Step-by-step explanation:

Step-by-step explanation:

it will take 21/20hours

Answer:

1/24

One fourth of 1/6 is 1/24

Answer:

1/2 batch

Step-by-step explanation:

1/2=1

1/4=1/2

Answer:

1/2 batches

Step-by-step explanation:

Please see the attached image.

I hope this helps!

Answer:

I don't recognize this problem, please make sure the input is complete.

Step-by-step explanation:

it that the full problem?

Answer:

Question 11 - B

Question 12 - C

Step-by-step explanation:

11). 4 chairs per table --> B

12). The 24 pack is a better buy (C).

Answer:

cube................

Answer:

A)

Step-by-step explanations:

Answer:

it's 3a+.50b

Step-by-step explanation:

Step-by-step explanation:

[tex]180 - 90 - 31 = 59[/tex]

angle (1)= 59+59=118

angle(2)=31