MATHEMATICS MIDDLE SCHOOL

If a = - 4i and b = -4 – 4i, then find the value of the a+b in fully simplified form.

Answers

Answer 1
Answer: here is the work! the answer is -8i-4 or -8+(-4)

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1. Chander and Tanisha have a backyard that is the shape of a trapazoid. The bases of the trapazoid are 20.1 m and 29.3m, and the height of the trapozoid is 17.9m. Find the area of the backyard to the nearest tenth.SOW WORK PLZZZZZ!!!!!

Answers

 Area of trapezoid=1/2(base 1 + base 2)*h. base 1=20.1, base 2=29.3, h=17.9 
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Which measure of central tendency is found by calculating the sum of all data in the set divided by the number of data values in the act?A)Mean

B)Interquartile range

C)Median

D)Mode

Answers

The answer would be A, Mean

The mean is the Average of a data set.


I hope that this helps. If it does, please rate Brainliest :D
The correct answer is MEAN and I am 100% sure

What is 46/16 as a mixed number

Answers

(46)/(16)=(23)/(8)=2(7)/(8)

The price of an item has been reduced by 80%. The original price was $35. What is the price of the item now?

Answers

Answer:

28

Step-by-step explanation:

100%-80%=20%

35×0.2=7

or

35×0.8=28

35-28=7

If 2x - 1 = 6, what is the value of 4x^2 - 1​

Answers

Answer: 48

Step-by-step explanation:

2x - 1 = 6

Add 1 to both sides of the equation , we have:

2x = 7

divide through by 2

x = 7/2

The value of 4x^(2) - 1 will be calculated by substituting in the value of x , that is

4x^(2) - 1 = 4(((7)/(2) )^(2) - 1

= 4((49)/(4)) - 1

= 49 - 1

= 48

Answer:

48

Step-by-step explanation:

2x-1=6

2x=6+1

2x=7

x=7/2

------------

4x^2-1

4(7/2)^2-1

4(49/4)-1

49-1

48

an item that costs $50 is marked 20% off. sales tax for the item is 8%. What is the final price, including tax

Answers

Marking\ off:\ 50-20\%*50=50-0.2*50=50-10=40\$\n\nTax:\ 40\$+8\%*40=40+0.08*40=40+3.2=43.2\$\n\nFinal\ price\ is\ 43.2\$.
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Please help! And get it right I hope!