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sveticcg [70]
3 years ago
8

Alina fully simplifies this polynomial and then writes it in standard form. xy2 – 2x2y + 3y3 – 6x2y + 4xy2 If Alina wrote the la

st term as 3y3, which must be the first term of her polynomial in standard form? xy2 5xy2 –8x2y –2x2y
Mathematics
2 answers:
ad-work [718]3 years ago
6 0

Answer:

-4x^2y

Step-by-step explanation:

Alina wrote the polynomial

2x^2y+3y^3-6x^2y+4xy^2

She wrote 3y^3 as the last term

We will solve the like terms and get its simplified form which is

-4x^2y+4xy^2+3y^3

Hence, the first term according to Alina standard form would be -4x^2y


Liono4ka [1.6K]3 years ago
3 0
I think the answer is -8x2y
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Please help and show work. 60 points
Svet_ta [14]

Answer:

<em>18</em>.

Domain: X E \{-3,2}

Y-Intercept: 1/2

X-Intercept: 3

<em>19.</em>

Domain: (I think it's none)

Y-Intercept: -2

X-Intercept: 2

<em>20.</em>

Domain: X E R\ {-3,1}

y-INTERCEPT: 2/3

x-INTERCEPT: -1

Step-by-step explanation:

3 0
3 years ago
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A drug trial is testing the effectiveness of two drugs. If 80 patients are given Drug A, 10 patients are given Drug B, and 20 pa
KiRa [710]

Answer:

The answer is 9/11.

Step-by-step explanation:

To find the answer you'd first add up how many patients you have:

80+10+20 = 110.

Now find out that how many patients are taking a real drug, which is represented by 80+10 = 90.

So, the probability of a patient NOT getting a placebo is 90/110

Simplified would be 9/11

Thus the answer is 9/11....

4 0
3 years ago
3. Ramona drank 1 5/8 liters of water during soccer practice. She drank 1 1/4
VashaNatasha [74]

Answer:

The expression x = \frac{13}{8}+\frac{5}{4} could be used to determine the amount of water drank altogether.

Step-by-step explanation:

Given that:

Amount of water drank during practice = 1\frac{5}{8} = \frac{13}{8}  liters

Amount of water drank on the ride home = 1\frac{1}{4} = \frac{5}{4} liters

Let,

x be the total amount of water drank by Ramona.

x = Water drank during practice + Water drank on the ride home

x = \frac{13}{8}+\frac{5}{4}

Hence,

The expression x = \frac{13}{8}+\frac{5}{4} could be used to determine the amount of water drank altogether.

5 0
3 years ago
Is 913,403 divisible by 6?
MatroZZZ [7]

Answer: False

Step-by-step explanation:

6 0
3 years ago
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A biology quiz consists of twelve multiple-choice questions. Eight must be answered correctly to receive a passing grade. If eac
Alex787 [66]

Answer:

There is a 0.058% probability that this student will pass the examination.

Step-by-step explanation:

For each question, there are only two possible outcomes. Either it is correct, or it is wrong. This means that we can solve this problem using the binomial probability distribution.

Binomial probability distribution:

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinatios of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

In this problem

There are 12 questions, so n = 12.

The student guesses each question. There are five possible answers, only one which is correct, so p = 0.2.

What is the probability that a student who guesses at random on each question will pass the examination?

This is P(X \geq 8)

P(X \geq 8) = P(X = 8) + P(X = 9) + P(X = 10) + P(X = 11) + P(X = 12)

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 8) = C_{12,8}.(0.2)^{8}.(0.8)^{4} = 0.000519

P(X = 9) = C_{12,9}.(0.2)^{9}.(0.8)^{3} = 0.000058

P(X = 10) = C_{12,10}.(0.2)^{10}.(0.8)^{2} = 0.000004

P(X = 11) = C_{12,11}.(0.2)^{11}.(0.8)^{1} = 0.0000002

P(X = 12) = C_{12,12}.(0.2)^{12}.(0.8)^{0} = 0.000000004

So

P(X \geq 8) = P(X = 8) + P(X = 9) + P(X = 10) + P(X = 11) + P(X = 12) = 0.000519 + 0.000058 + 0.000004 + 0.0000002 + 0.000000004 = 0.00058

There is a 0.058% probability that this student will pass the examination.

6 0
3 years ago
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