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Rama09 [41]
3 years ago
7

Pleaseeeeeeeeeeee helpppppppppppppppp

Mathematics
1 answer:
gulaghasi [49]3 years ago
7 0

Answer:

hirap naman yan basahin mo kasi directions

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The sum of two imaginary numbers is -7-6i. If one of the numbers is -12+2i, what is the other imaginary number?​
klio [65]

Answer:

5-8i

Step-by-step explanation:

-7-6i and -12+2i

Treat it as a polynomial. We all know that i=square root of -1, but in this case, treat it as a polynomial.

-12+5=-7

2i-8i=6i

So 5-8i

4 0
3 years ago
Read 2 more answers
The height of water shooting from a fountain is modeled by the function f(x) = −0.2x2 − 2.8x − 5.4 where x is the distance from
balandron [24]
Start by setting the function equal to 0 and then moving the -5.4 over to the other side of the equals sign.  -.2 x^{2} -2.8x=5.4.  The first rule for completing the square is that the leading coefficient be a +1.  Ours is a -.2.  So we need to factor it out. -.2( x^{2} +14x)=5.4.  Now we will take half the linear term, square it, and add it to both sides.  Our linear term is 14.  Half of 14 is 7, and 7 squared is 49.  So we add 49 in to the left side just fine, but we cannot forget about that -.2 hanging around out front as a multiplier.  What we have actually "added" in is -.2*49 which is -9.8.  Now here's what we have after all that: -.2( x^{2} +14x+49)=5.4-9.8.  In that process, we have created a perfect square binomial on the left.  Along with expressing that binomial we will do the math on the right: -.2(x+7) ^{2} =-4.4.  Now we will move the -4.4 back over by addition, and it will then be apparent as to what our vertex is.  The y coordinate of the vertex will give us the max height of the water.  -.2(x+7) +4.4=y.  As you can see, our work matches choice C from above.
4 0
3 years ago
What is the solution to this equation?
anygoal [31]
The answer is c!!!!!!
6 0
3 years ago
Read 2 more answers
Farmer Samantha has a cylindrical grain silo with a diameter of 12 feet and a height of 40 feet. The silo is filled with grain t
sammy [17]

Answer:

161,234 pounds of grain will remain in the silo

Step-by-step explanation:

In this question, we are to calculate the amount of grains that will be left in a silo if 20 cows feed on the content for 100 days.

Firstly, we need to calculate the amount of grains present in the silo.

This we can do by first calculating the volume of the silo. Since it is cylindrical in shape, we apply the formula for the volume of a cylinder.

Mathematically, the volume of a cylinder is

V = pi * r^2 * h

Here we have the r = D/2 = 12/2 = 6 feet and h = 40 feet. Plugging this , we have;

V = pi * 6^2 * 40 = 1440pi cubic feet

Now, per cubic feet, we have a weight of 48 pounds. The weight of grains thus present in the silo is thus;

1440pi * 28 = 1440 * pi * 48= 69,120pi pounds of grain

Let’s calculate what the cows would feast on. That would be 20 * 28 * 100 = 56,000 pounds of grains

Now we need to know what will remain. We just need to subtract what is consumed by the cows from we have inside the silo

What is inside the silo would be 69,120 * 22/7 = apprx 217,234 pounds

What will remain is thus 217,234 - 56,000 = 161,234 pounds of grain

3 0
3 years ago
Jennifer is the owner of a video game and entertainment software retail store. She is currently planning to retire in 30 years a
olchik [2.2K]

Answer:

112323

Step-by-step explanation:

4 0
4 years ago
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