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Rainbow [258]
3 years ago
5

Multiply (2 – 71)(-1 + 47)

Mathematics
2 answers:
Serhud [2]3 years ago
6 0
(2-7i)(-1+4i)
2x-1=-2
2x4i= 8i
-7ix-1=7i
-7ix4i=-28i^2

so the answer is
-2+8i+7i+28i^2
=28i^2+15i-2

:)
igomit [66]3 years ago
6 0
Will this help? You can only Multiply the Same variables. I need to sleep now :)

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PLEASE HELP!!!!! !!!!!!!!!!!!
valina [46]

Answer:

31.9secs

6,183.3m

Step-by-step explanation:

Given the equation that models the height expressed as;

h(t ) = -4.9t²+313t+269

At the the max g=height, the velocity is zero

dh/dt = 0

dh/dt = -9,8t+313

0 = -9.8t + 313

9.8t = 313

t = 313/9.8

t = 31.94secs

Hence it takes the rocket 31.9secs to reach the max height

Get the max height

Recall that h(t ) = -4.9t²+313t+269

h(31.9) = -4.9(31.9)²+313(31.9)+269

h(31.9) = -4,070.44+9,984.7+269

h(31.9) = 6,183.3m

Hence the maximum height reached is 6,183.3m

3 0
3 years ago
One pound of candies costs $3.50. How much will we have to pay for 3 lb?
Romashka-Z-Leto [24]

Answer: 10.50 dollars


Step-by-step explanation:

3.50 x 3 = 10.50

8 0
3 years ago
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yKpoI14uk [10]

Answer:

-6 is the same as Subtracting 6, C.

Hope this helps!

Step-by-step explanation:

For example,

5 - 6

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8 0
3 years ago
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Using the numbers 8, 6, 4, and 2 write an expression that equals 32
Andrej [43]
The expression is 8(6-4)•2 .
5 0
4 years ago
13x+7=8x+27<br> 20 points
Montano1993 [528]

Answer:

x=4

Step-by-step explanation:

13x+7=8x+27

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5x=20

x=4

5 0
3 years ago
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