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Olenka [21]
4 years ago
12

What is (19-1) X (7-6)

Mathematics
1 answer:
kkurt [141]4 years ago
4 0

19 - 1 = 18 and 7 - 6 = 1

Since anything multiplied by 1 is itself, the answer is 18.

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Find the standard form of the complex number 6(cos(30degree) +i sin (30 degree))
Marat540 [252]

Answer:

= 3√3 + 3i

Step-by-step explanation:

Cos 30° = √3/2

Sin 30°  = 1/2

Therefore;

z = 6 (cos 30° + i6 sin 30°)

  = 6 (√3/2) + i 6 (1/2)

   = 3√3 + 3i

6 0
3 years ago
Which expression below gives the average rate of change of the function g(x)= -x^2 -4x on the interval 6 ≤ x ≤ 8?
DiKsa [7]
The average rate of change of a function, g(x), over an interval [a, b] is given by 

Average\ rate\ of\ change= \frac{g(b)-g(a)}{b-a}

Thus, the average rate of change of g(x)=-x^2-4x over the interval 6\leq x\leq8 is given by:

Average\ rate\ of\ change= \frac{[-(8)^2-4(8)]-[-(6)^2-4(6)]}{8-6} \\  \\ = \frac{(-64-32)-(-36-24)}{2} = \frac{-96-(-60)}{2} = \frac{-96+60}{2} = \frac{-36}{2}  \\  \\ -18
6 0
4 years ago
Divide 72k in a ratio of 1:3:5
larisa [96]
1:3:5
firstly u need to find out how much one will get so u will add all the ratios 1:3:5 and divide by 72k(72000) so you will get 8000
therefore 1 will get 8000
3 will get 8000 multiply by 3 =24000
5 will get 8000 multiply by 5 = 40000
do you understand......if you need any more help ...feel free!!!!
6 0
3 years ago
Line K has the equation y=5x-4.
Marat540 [252]
<h3>Answer:    y = 5x+3</h3>

Explanation:

Parallel lines always have equal slopes, but different y intercepts.

Line K has a slope of 5, which means line L also has this slope too. Refer to the y = mx+b form.

Plug in the coordinates of (-2,-7) as well as the slope mentioned and solve for b.

y = mx+b

-7 = 5(-2) + b

-7 = -10+b

-7+10 = b

3 = b

b = 3

The y = mx+b updates to the final answer of y = 5x+3

5 0
2 years ago
Plz help 50 pnts and brainlist
Nikitich [7]

6 yards is the answer

144π= πr^2*4 (formula)

the pi’s cancel out

divide 144/4

36=r^2

square root 36 to get rid of the r squared

r= 6 yd
5 0
3 years ago
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