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Novosadov [1.4K]
3 years ago
15

What is the missing constant term in the perfect square that starts with x2 – 12x ?

Mathematics
1 answer:
Dima020 [189]3 years ago
8 0

Answer:

x^2 -12x+36

Step-by-step explanation:

x^2 – 12x

Take the coefficient of x

-12

Divide by 2

-12/2 = 6

Square it

6^2 = 36

We need to add 36 to make x^2 -12x a perfect square trinomial

x^2 -12x+36

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4+48 divided by 4x3..................................
BartSMP [9]

Answer:

4.41666666667

Step-by-step explanation:

sorry if im wrong, have a nice day!

8 0
3 years ago
Read 2 more answers
An equilateral triangle and a square have the same perimeter. One side of the triangle measures 12 cm.
pentagon [3]
I believe the sides of the suare is 9
6 0
4 years ago
The sum of two numbers is 21. The larger number is 6 less than twice the smaller number. Find the two numbers.
never [62]
The sum of two numbers
 x + y = 21
x = smaller number
y = larger number

Larger Number = y = (2x -6)
Substitute  (2x - 6) for y
x + y = 21
x + (2x - 6) = 21
3x - 6 = 21
3x = 21 + 6
3x = 27
3x / 3 = 27 / 3
x =  9
Smaller number = x = 9
Find the larger number by inserting 9 into (2x - 6)
(2x - 6)
(2(9) - 6)
18 - 6
12

So 
x = 9
y =12

Check our answer by inserting x = 9 and y = 12 into  x + y = 21
x + y =21
9 + 12 = 21
21 = 21 
So since we have 21 = 21 we know our answer is correct. 
5 0
3 years ago
A cyclist rides her bike at a rate of 15 miles per hour. What is this rate in kilometers per hour? How many kilometers will the
Trava [24]

Answer:

1. 24 km/hour

2. 48 km

Step-by-step explanation:

1 mile = 1.6 km

cyclist = 15 miles/ hour

we want to multiply speed by something that will cancel miles out and leave km. to do this, we want to multiply it by something with miles on the bottom and km on the top.

this is because

miles * km / miles = km as the miles cancel out and km is left in the numerator

thus,

1 mile = 1.6 km

divide both sides by 1.6 km to get 1 on a side

1 mile / 1.6 km = 1

alternatively, divide both sides by 1 mile to get 1 on a side

1.6 km / 1 mile = 1

since we want miles on the bottom, we choose the second option

cyclist = 15 miles / hour = 15 miles/hour * 1 = 15 miles/hour * 1.6km / 1 mile = 24 km /hour

24 km/hr for 2 hours = 24 km/hr * 2 hours = 24 * 2 km = 48 km

3 0
2 years ago
A ball is rolling at a rate of 3 ft per second toward a wall that is 33 feet away. Select all that apply to this situation.
vodomira [7]

Answer:

The y-intercept is 33ft. The ball is 33 feet away from the wall

It will take the ball 11 seconds to touch the wall

The slope is -3 feet. The ball is rolling towards the wall at 3 ft per second.

Step-by-step explanation:

I took the test.

3 0
3 years ago
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