What expression is equivalent to 486-9+6+3^*2

There are 60 animal exhibits at the local zoo. What percent of the zoo's exhibits does each animal class represent?

snow_lady [41]

Answer:

30+15+12+3= 60

for mammal 30/60=0.50%

reptile 15/60=0.25%

fish 12/60= 0.20%

bird 3/60=0-05%

i hope that helps

8 0

3 years ago

Complete the paragraph below. The standard deviation is used in conjunction with the ______ to numerically describe distributio

Bumek [7]

Answer:

The standard deviation is used in conjunction with the mean to numerically describe distributions that are bell shaped. The mean measures the center of the distribution, while the standard deviation measures the spread of the distribution.

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by

$Z = \frac{X - \mu}{\sigma}$

The mean is the average value of the measures while the standard deviation measures how spread the measures are from the mean. So

The standard deviation is used in conjunction with the mean to numerically describe distributions that are bell shaped. The mean measures the center of the distribution, while the standard deviation measures the spread of the distribution.

4 0

3 years ago

How can you undo the addition of 7 on the left side of this equation? 6x + 7 = 19

BaLLatris [955]

6x - 7 = 19
6x = 19 + 7 
6x = 26 (divide both sides by 6 to get x) 
6x/6 = 26/6 
x = 4.33333333333

8 0

3 years ago

Homework check? if i’m wrong tell me why? :)

Talja [164]

Answer:

9d you need to take the 3 to the power outside the (). I can't read it. 4???

10c x needs to be raised to the power also.

10e simplify the fraction

Step-by-step explanation:

7 0

3 years ago

Which expression is equivalent to 163?

hjlf

Answer:

C: 2^12 is the answer

Step-by-step explanation:

the expression is 16^3=4069 and 2^12=4069 so 2^12 is equivalent to 16^3

4 0

3 years ago

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