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3 years ago

(3×²+5y²)³= (2y³-×5)²=

1 answer:

7 0

First one:
(3x^2+5y^2)^3
Step 1: Use the binomial theorem to expand
(3x^2)+3(3x^2)^2(5y^2)+3(3x^2)(5y^2)2+(5y^2)^3
Step 2: Simplify each term
27(x^2)^3+3(3x^2)^2(5y^2)+3(3x^2)(5y^2)^2+(5y^2)^3
Step 3: Multiply the exponents
27x^6+27x^4(5y^2)+3(3x^2)(5y^2)^2+(5y^2)^3
27x^5+135x^4y^2+3(3x^2)(5y^2)^2+(5y^2)^3
Keep going to get the final answer:
27x^6+135x^4y^2+225x^2y^4+125y^6

2nd question: (2y^3-5x)^2
Do the same thing...step by step
Answer: 4y^6-20xy^3+25x^2

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What is the value of x?

Westkost [7]

Answer:

x is equal to 20 in this picture.

Step-by-step explanation:

In order to find this, we need to note that these two angles will be equal to each other. Now we can put their values equal to each other and solve for x.

3x + 50 = 6x - 10

50 = 3x - 10

60 = 3x

20 = x

6 0

3 years ago

Evan says that the value of the numerical expression 0.2+ 12 ÷ (1.5×4) is 32.04 . do you agree ?

12345 [234]

Answer:

NO! The correct answer is 2.03 (where 3 is repeating)

Step-by-step explanation:

0.2 + 12 / (1.5*4) does not equal 32.04

Parenthesis first! 1.5 times 4 equals 6.

0.2 + 12 = 12.2

12.2/6

12.2/6= 2.0333... but it should be rounded to 2, because

3 0

3 years ago

Which of the following graphs is described by the function given below? y = x2 - 6x-7

Zanzabum

Answer:

Step-by-step explanation:

We are given the function:

$\displaystyle y = x^2 - 6x - 7$

And we want to determine its graph.

One of the most important features of a quadratic is its vertex. So, we can start by finding the vertex using the formulas:

$\displaystyle \text{Vertex} = \left(-\frac{b}{2a}, f\left(-\frac{b}{2a}\right)\right)$

In this case, a = 1, b = -6, and c = -7.

Find the x-coordinate of the vertex:

$\displaystyle x = -\frac{(-6)}{2(1)} = 3$

Substitute this back into the equation to find the y-coordinate:

$\displaystyle y(3) = -16$

Therefore, our vertex is at (3, -16).

The only graph whose quadratic's vertex is at (3, -16) is Graph A. Thus, our answer is A.

5 0

3 years ago

What two integer is 2.3 between?

sineoko [7]

2 and 3

Because integers are numbers that are whole and not negative.

4 0

4 years ago

Read 2 more answers

A manager samples the receipts of every fifth person who goes through the line. Out of 50 people, 6 had a mispriced item. If 1,6

MAXImum [283]

Answer:

48 people

Step-by-step explanation:

1. 4/50 = x/600 do 4x600 and 50 times x

2.50x=2400

3. divide both sides by 50 to get a result of x=48.

6 0

3 years ago