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Vedmedyk [2.9K]
4 years ago
5

(3+2i)+(5+7i) equals

Mathematics
1 answer:
dlinn [17]4 years ago
6 0
I simplify so is 

8+9i
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A major storm has winds speeds that are at least 110 miles per hour.Write and solve an inequality that describes how much greate
suter [353]

Answer:

x ≥ 36 miles per hour

Step-by-step explanation:

The speed of a major storm is at least 110 miles per hour while the speed of the slowest hurricane is at least 74 miles per hour.

Let x represent how much greater these wind speeds are than the slowest hurricane. Therefore:

x ≥ 110 miles per hour - 74 miles per hour

x ≥ 36 miles per hour

This means that the winds speed must be 36 miles per hour greater than the slowest hurricane.

3 0
3 years ago
2 x 12 divided by (2 + 6) +2^3
TEA [102]

Answer:

11

Step-by-step explanation:

To add fractions, find the LCD and then combine or Pemdas

5 0
3 years ago
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-1 +(-3) is units from -1 in the direction
likoan [24]

Answer:

-4

Step-by-step explanation:

5 0
4 years ago
The test scores of a geometry class are given below. 90, 75, 72, 88, 85 The teacher wants to find the variance for the class pop
ella [17]
The data given as a whole would be called ungrouped data. Now to get the variance, you will need the formula:

s^2=   <u>Σ(x-mean)^2</u>
                   n      

x = raw data
mean = average of all data
n = no. of observations
s^2 = variance

Now we do not have the mean yet, so you have to solve for it. All you need to do is add up all the data and divide it by the number of observations. 

Data: <span>90, 75, 72, 88, 85        n= 5  
</span>Mean=<u>Σx</u>
            n
Mean = <u>90+75+72+88+85 </u>  = <u>410</u> = 82
                        5                        5

The mean is 82. Now we can make a table using this.

The firs column will be your raw data or x, the second column will be your mean and the third will be the difference between the raw data and the mean and the fourth column will be the difference raised to two. 

90-82 = 8
8^2 =64

75-82 = -7
-7^2 =49

72-82 = -10
-10^2=100

88-82=6
6^2 = 12

85-82=3
3^2=9

Now you have your results, you can now tabulate the data:

 x      mean         x-mean        (x-mean)^2     
90       82                8                      64                       
75       82               -7                      49
72       82              -10                    100
88       82                6                       36
85       82                3                       9

Now that you have a table, you will need the sum of (x-mean)^2 because the sigma sign Σ in statistics, means "the sum of."

64+49+100+36+9 = 258

This will be the answer to your question. The value of the numerator of the calculation will be 258.

 
<u>
</u>
6 0
4 years ago
I need help with this packet here is the main question Algebra
Darina [25.2K]

Answer:

his family know we stepped on him.

Step-by-step explanation:

i wish i can spit in his casket.

4 0
3 years ago
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