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ipn [44]
4 years ago
6

(−3 + 8i)(−3 − 8i) =

Mathematics
1 answer:
Mice21 [21]4 years ago
8 0

Answer: 73

Step-by-step explanation:  

Multiply using the FOIL method, then combine the real and imaginary parts of the expression.

73

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Gary spent $48 on a watch. He spent 1/3 of the remainder on a pen if he still had 1/2 of his money left,how much money did he ha
xeze [42]
T= total
<span>Money spent is: </span>
48+ 1/3 (T-48) = 1/2 T
One equation for one unknown, solve:

48 + 1/3 T -1/3*48= 1/2 T
48 - 16 =1/2 T- 1/3 T
32= 1/6 T
T= 6*32
<span>T=192

</span>192-48=144 money left after watch
1/3*144=48 third of leftover, spent on pen
<span>144-48=96 left which is half of 192. </span>
6 0
4 years ago
Read 2 more answers
Three times a number plus 3 is 24 find the number
stiv31 [10]
The number (variable n) would be 7. work is in the pic

4 0
4 years ago
Which of the following shows the correct graph and solution of the system
loris [4]

Answer:

solution = (1.-2)

Step-by-step explanation:

put x= 1 and y = -2 in this system  :  y=-4x+2 and y + 2x = 0

you have :  - 2 = - 4(1)+2  and -2 +2(1)=0

-2=-2 and 0=0 .....right

3 0
4 years ago
Help me solve for the right triangle
AleksAgata [21]

Answers:

B = 50

a = 10.9

c = 17.0

================================================

Explanation:

This is a right triangle, so the acute angles are complementary, meaning they add to 90

B+40 = 90

B+40-40 = 90-40

B = 50

Also, because this is a right triangle, we can use trig ratios to compute the missing sides

tan(angle) = opposite/adjacent

tan(40) = a/13

a = 13*tan(40)

a = 10.908

a = 10.9

cos(angle) = adjacent/hypotenuse

cos(40) = 13/c

c*cos(40) = 13

c = 13/cos(40)

c = 17.0

note: make sure your calculator is in degree mode

7 0
4 years ago
Question 2 of 9<br> 12 + (17 + 1) = (12 +17) + 1<br> A. True<br> B. False<br> SUBMIT
musickatia [10]

Answer:

i think true

Step-by-step explanation:

5 0
4 years ago
Read 2 more answers
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