All categories

3 years ago

Determine which polynomial is a perfect square trinomial. Explain your answer.

Mathematics

1 answer:

kupik [55]3 years ago

5 0

Answer:

<em>The answer is B. 9a2-30a+25</em>

Step-by-step explanation:

First of all, the second sign is going to be +, so you can toss out C and D without checking.

Then you take the square root of the two ends, multiply them, multiply by two and see if it matches.

sqrt(49) * sqrt(16) = 7 * 4 = 28

28 * 2 = 56

56 <> 28

So toss A.

sqrt(9) * sqrt(25) = 3 * 5 = 15

15 * 2 = 30

So the answer is B

(3a - 5)^2 = 9a^2 - 30a + 25

By the way, use ^ to indicate an exponent.

You might be interested in

Here it is the better quality question

My name is Ann [436]

Answer:if your still doing this comment and I will try helping

Step-by-step explanation:

6 0

3 years ago

What is f(x) = 3x -5

pashok25 [27]

F(x)= -2x
Hhahahhh I did Not type the Solution I'm tired hahahha Sorry .. ^_^

5 0

4 years ago

Given a circle with a diameter of 4, which equation expresses π as the ratio of the circumference of a circle to its diameter?

sashaice [31]

4*pi=C
is the formula (d*pi=C)

4 0

3 years ago

Read 2 more answers

What is the difference between a copyright and a trademark, and how are they used to protect intellectual property?

kirill [66]

Answer: Copyright protects original work, whereas a trademark protects items that distinguish or identify a particular business from another.

The trademark laws protect the product or service name and any slogans used in the advertising, while the copyright laws protect the additional creative written expression contained in the ad. Hope this helps!

Step-by-step explanation:

8 0

2 years ago

Two of the cards of an ordinary deck of 52 cards are lost. What is the probability that a random card drawn from this (defective

Nostrana [21]

Answer:

0.72

Step-by-step explanation:

Given :Two of the cards of an ordinary deck of 52 cards are lost.

To Find : What is the probability that a random card drawn from this (defective) deck is a spade?

Solution:

Total number of cards = 52

2 cards are lost

Remaining cards = 50

When no spade card is lost

So, No. of spade cards = 13

Total cards = 50

So, probability of getting spade = $\frac{13}{50}$

When 1 spade card is lost

So, No. of spade cards = 12

Total cards = 50

So, probability of getting spade = $\frac{12}{50}$

When 2 spade cards are lost

So, No. of spade cards = 11

Total cards = 50

So, probability of getting spade = $\frac{11}{50}$

So, The he probability that a random card drawn from this (defective) deck is a spade = $\frac{13}{50}+\frac{12}{50}+\frac{11}{50}$

= $\frac{36}{50}$

= [tex]0.72/tex]

Hence the probability that a random card drawn from this (defective) deck is a spade is 0.72

3 0

3 years ago