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velikii [3]
3 years ago
14

3k^2=11+6k : complete the square

Mathematics
1 answer:
WARRIOR [948]3 years ago
4 0

Answer:

3(k - 1)² = 12

Step-by-step explanation:

To complete the square, write the equation standard form and make the a term's coefficient 1.

3k² = 11 + 6k

3k² - 6k - 11 = 0

3(k² - 2k) = 11

Take the middle term -2k and divide the coefficient in 2 and square it. Here it is -2/2 = -1. -1² = 1. Add 1 to both sides.

3(k² - 2k + 1) = 11 + 1

3(k - 1)² = 12

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The ratio of length and breadth of a rectangular ground is 4:3 and the breadth is 75m. Find the length of the ground.​
Crank

Answer:

the answer is 100m

Step-by-step explanation:

let 4:3 be 4x and 3x respectively

3x=75m

x=75÷3

x=25

Then,

4x=4*25

=100m

7 0
3 years ago
Simplify the following
Mashutka [201]

Answer:

60√3 or 103.923

5 0
3 years ago
A babe flies at 10 feet per second directly to a flowerbed from its hive. the bee stays at the flowerbed 12 minutes,and the flie
lina2011 [118]

The equation used to find the distance of the flowerbed from the hive is called the "time equation".

The flowerbed is 900 feet far from the hive.

<h3>What is the formula used to calculate Time Equation?</h3>
  • To calculate the time equation use the formula for time, t = d/s which means time equals distance divided by speed.

<h3>Find the height using the Time Equation?</h3>

Find the traveling time

The bee spends 12 minutes hunting down the nectar in the flowerbed. Since it was away from the hive for a total of 16 minutes, the traveling time is

16min - 12min = 4 min

Convert the Minutes to seconds

1 minute = 60 seconds

4 minutes = 4*60 = 240 seconds

Find the time each way

The total time is 240 seconds, but it is not divided evenly.

Let the time there = t

Let the time back = 240 - t

The distances are the same

r = 10 m/s

r1 = 6 m/s

t1 = t

t2 = 240 - t

dthere = dback

d = rate * time

10 m/s *t = 6 m/s (240 - t)      

Remove the brackets on the right.

10 * t = 6*240 - 6t                

Combine the like terms on the right.

10t = 1440 - 6t                        

Add 4t to both sides

10t + 6t = 1440 - 6t + 6t          

Combine

16t = 1440                            

Divide both sides by 16

16t/16 = 1440/16                    

Do the division

t = 90                                    

Find the height

d = ?

r = 10 m/s

t = 90 second

d = r*t

d = 10 * 90 = 900 feet

The flowerbed is 900 feet far from the hive.

To learn more about time equation, refer:

brainly.com/question/26046491

#SPJ4

The complete question is:

A babe flies at 10 feet per second directly to a flowerbed from its hive. the bee stays at the flowerbed for 12 minutes and then flies directly back to the hive at 6 feet per second. It is away from the hive for a total of 16 minutes.

What equation can you use to find the distance of the flowerbed from the hive?

6 0
2 years ago
Sophia Isabella share reward of $117 in a ratio of 1 to 8 what fraction of the total reward does Sophia get
Mars2501 [29]
$13 because Isabella will be awarded $104 making the ratio 1:8
3 0
4 years ago
Read 2 more answers
A caterer offers five different appetizers, three different drinks and four different sandwiches. How many combinations of two a
Alex73 [517]

Answer: 180.

Step-by-step explanation:

Appetizers = 5 types

drinks = 3 types

Sandwiches = 4 types.

Solution:

This is a combination problem.

For appetizers

= 5C2

= 10.

For drinks

= 3C2

= 3.

For sandwiches

= 4C2

= 6.

No. Of combinations scot can choose for his party

= 10*6*3

= 180

Scot can choose a total of 180 combinations for his party.

7 0
3 years ago
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