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Ad libitum [116K]
3 years ago
15

-3 ( -4 - 5x) = -18 i'll help with your questions :)))

Mathematics
1 answer:
maria [59]3 years ago
6 0

Answer:

-15

Step-by-step explanation:

-3(-4-5x)= -18

12+15x= -18-12

15x= -30

x= -30÷15

x= -15

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Please help me out :)
arlik [135]

Answer:

\frac{\sqrt{17} }{7}

Step-by-step explanation:

Using the Pythagorean identity

sin²x + cos²x = 1, then

sinx = \sqrt{1-cos^2x}

Note that (\frac{4\sqrt{2} }{7})² = \frac{32}{49}

sinΘ = \sqrt{1-(32/49)}

        = \sqrt{\frac{17}{49} } = \frac{\sqrt{17} }{7}

5 0
3 years ago
Write six hundred twelve thousand, three hundred in the place -value chart. then write the number in expanded form.
Amanda [17]
6 - hundred thousand
1 - ten thousands
2 - thousands
3 - hundred
0 - tens
0 - ones

600,000 + 10,000 + 2,000 + 300
8 0
3 years ago
Read 2 more answers
Suppose temperatures and monthly ice cream sales were measured for 100 randomly selectd cities. Which variable is the explanator
34kurt
Temp is explanatory and ice cream sales is the response
6 0
3 years ago
Question 12 (1 point)
Paraphin [41]
<h3>Answer:   5</h3>

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

Explanation:

Let's consider the expression (x-y)^2. It expands out to x^2-2xy+y^2. The terms are:

  • x^2
  • -2xy
  • y^2

Each of those terms either has a single variable with an exponent of 2, or has the exponents add to 2. Think of 2xy as 2x^1y^1.

In short, this means that the degree of each monomial term is 2.

----------

Now consider (x-y)^3. It expands out into x^3-3x^2y+3xy^2+y^3.

We have terms that either have a single variable and the exponent is 3, or the exponents add to 3. The degree of each term is 3.

----------

This pattern continues.

In general, for (x-y)^n, where n is any positive whole number, the degree of each term in the expansion is n. If you picked any term, added the exponents, then the exponents will add to n.

4 0
2 years ago
Select the correct answer from each drop-down menu.
asambeis [7]

Answer:

To  get system B, the SECOND equation in system A was replaced by the sum of that equation and the FIRST equation multiplied by FOUR. The solution to system B IS de same as the solution to system A

Step-by-step explanation:

x-y=3  equation 1

-2x+4y=-2   equation 2

so, multiplying by four the equation 1 we have

4x-4y=12   equation 3

later sum equation 3 and equation 2 we have

2x=10

6 0
3 years ago
Read 2 more answers
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