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Lerok [7]
3 years ago
5

(Picture) MULTIPLYING MONOMIALS AND BINOMIALS

Mathematics
2 answers:
Rasek [7]3 years ago
5 0

Answer:

Second option: -3x^2

Step-by-step explanation:

A is the product of -x and 3x, then:

A=(-x)(3x)→A=-3x^2

AfilCa [17]3 years ago
3 0

Answer:

Option B is correct, i.e. the value of A is -3x^2.

Step-by-step explanation:

Given is the matrix of multiplying binomials.

We can multiply the row and column to find the elements A, B, C, D.

D is given 10 which indicates 5*2 = 10

Similarly A = 3x * -x = -3x^2

B = 5 * -x = -5x

C = 3x * 2 = 6x

Hence, option B is correct, i.e. the value of A is -3x^2.

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True or false? The quadratic equation 10p2 - 5p = -8 has one solution.
pav-90 [236]

Answer: False

=============================================

Explanation:

I'll use x in place of p.

The original equation 10x^2-5x = -8 becomes 10x^2-5x+8 = 0 after moving everything to one side.

Compare this to ax^2+bx+c = 0

We have

  • a = 10
  • b = -5
  • c = 8

Plug those three values into the discriminant formula below

d = b^2 - 4ac

d = (-5)^2 - 4(10)(8)

d = 25 - 40*8

d = 25 - 320

d = -295

The discriminant is negative, which means we have no real solutions. If your teacher has covered complex or imaginary numbers, then you would say that the quadratic has 2 complex roots. If your teacher hasn't covered this topic yet, then you'd simply say "no real solutions".

Either way, this quadratic doesn't have exactly one solution. That only occurs when d = 0. Therefore, the original statement is false.

6 0
2 years ago
Find the speed of a race car if it travels 5 miles in 2 minutes and 30 seconds
Tomtit [17]
You first convert the 2 minutes and 30 seconds to 150 seconds.

Then, you take the 150s÷5m to get the number of seconds per mile.

The answer is 30s/m
4 0
3 years ago
Felisa read the first 60 pages of a book in 3 days. She reads the last 90 pages in 6 days. Are these reading rates equivalent? E
Montano1993 [528]
No, because
60/3 = 20
90/6= 15
Both of the answers aren’t equivalent.
3 0
3 years ago
I need help, please!! I'll give a brainliest
kvasek [131]

Answer:

metals or metalloids

Step-by-step explanation:

I'm built different i dont know if im right about the question. im just not sure if i understood the question correctly

3 0
2 years ago
Please answer the last one correctly thanks!
nadezda [96]

Step-by-step explanation:

yes D is the correct answer k

6 0
2 years ago
Read 2 more answers
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