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AlexFokin [52]
3 years ago
14

What value of c makes the polynomial below a perfect square trinomial?x2 + 18x + c?

Mathematics
1 answer:
aalyn [17]3 years ago
5 0
C = 81. 

You can get this by taking half of the b term and squaring it. 
You might be interested in
A standard doorway measures 6 feet 8 inches by 3 feet. What is the largest dimension that will fit through the doorway without b
nikdorinn [45]

Answer:

87.73 inches

Step-by-step explanation:

We are given that the dimensions of the rectangular doorway are,

Length = 6 ft 8 inches = 80 inches and Width = 3 feet = 36 inches.

Using Pythagoras Theorem, we will find the diagonal of the rectangular doorway.

i.e. hypotenuse^{2}=length^{2}+width^{2}

i.e. hypotenuse^{2}=80^{2}+36^{2}

i.e. hypotenuse^{2}=6400+1296

i.e. hypotenuse^{2}=7696

i.e. Hypotenuse = ±87.73 inches

Since, the length cannot be negative.

So, the length of the diagonal is 87.73 inches.

As, the largest side of a rectangle is represented by the diagonal.

So, the largest dimension that will fit through the doorway without bending is 87.73 inches.

7 0
4 years ago
How do u do this? please help
OLga [1]

Answer:

21

Step-by-step explanation:

Given that 2 parts of the ratio equals 14 green marbles, then divide to find the value of one part of the ratio.

14 ÷ 2 = 7 ← value of 1 part of the ratio, thus there are 7 blue marbles

Total marbles = 14 + 7 = 21

3 0
3 years ago
What is equivalent to the square root of 8?
Pavlova-9 [17]
It would be 2 root 2
bc it simplifies to root 2 and root 4 
root 4 simplifies to 2 
so its 2√2
5 0
4 years ago
The composition ry-axisT(0, 2) is used to transform a triangle having a vertex at (0, 1). Describe how to find the coordinates o
Tpy6a [65]

Answer:

Sample Response: Perform the transformations from right to left. First, rotate the triangle 90 degrees. Negate the y-coordinate and then switch the coordinates to get (–1, 0). Next, perform the translation up by adding 0 to the x-coordinate and 2 to the y-coordinate to get (–1, 2). Finally, reflect this point over the y-axis by negating the x-coordinate to get (1, 2).

Step-by-step explanation:

6 0
4 years ago
TIME REMAINING37:15How many square inches are in 60 square feet?
Firlakuza [10]
60 square feet = 8640 square inchs

So, 60 square feet = 60 × 144 = 8640 square inchs.
5 0
3 years ago
Read 2 more answers
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