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Katena32 [7]
3 years ago
13

Use the associative property to identify which expression is equal to (10) (5x)(7)

Mathematics
1 answer:
harkovskaia [24]3 years ago
6 0

Answer:

(10·5)(x·7) is correct

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Answer with steps pls
scoray [572]

Answer:

<u>A) 2¹²</u>

Step-by-step explanation:

Given :

  • 3x - y = 12

Equate the equation to y :

  • 3x - y + y = 12 + y
  • 12 + y = 3x
  • 12 + y - 12 = 3x - 12
  • <u>y = 3x - 12</u>

<u />

Substituting in the expression :

  • \frac{8^{x} }{2^{y} }
  • \frac{2^{3x} }{2^{3x-12} }
  • {2^{3x-3x+12}}
  • <u>2¹²</u>
6 0
2 years ago
R(x) = –x² + 3x s(x) = 2x + 1<br><br> (s – r)(x) =
natta225 [31]

r(x) = –x² + 3x

s(x) = 2x + 1

(s – r)(x) is simply the difference of these functions. Subtract r(x) from s(x):

(s - r)(x) = s(x) - r(x)

(s - r)(x) = 2x + 1 - (-x² + 3x)

(s - r)(x) = 2x + 1 + x² - 3x

(s - r)(x) = x² - x + 1

3 0
3 years ago
Read 2 more answers
Y=2x identify the constant of proportionality
Readme [11.4K]
2 is the constant of proportionality in the equation y = 2x . When two variables are directly proportional to each others . Therefore 2 is the constant of proportionality in the equation y = 2x .
3 0
3 years ago
Simplify 3 square root of 5 end root minus 2 square root of 7 end root plus square root of 45 end root minus square root of 28
Lana71 [14]
Hello,

3 \sqrt{5} -2 \sqrt{7} + \sqrt{45} - \sqrt{28}\\\\&#10;= 3 \sqrt{5} -2 \sqrt{7} + 3\sqrt{5} - 2\sqrt{7}\\\\&#10;=6 \sqrt{5} -4 \sqrt{7} &#10;



6 0
3 years ago
Read 2 more answers
Consider the equation below. (If an answer does not exist, enter DNE.) f(x) = 8 cos2(x) − 16 sin(x), 0 ≤ x ≤ 2π (a) Find the int
Amiraneli [1.4K]

Answer:

  • increasing: (π/2, 3π/2)
  • decreasing: [0, π/2) ∪ (3π/2, 2π]
  • minimum: -16 at x=π/2
  • maximum: 16 at x=3π/2

Step-by-step explanation:

If all you want are answers to the questions, a graphing calculator can provide them quickly and easily. (see attached)

___

If you need an algebraic solution, you need to find the zeros of the derivative.

  f'(x) = -16cos(x)sin(x) -16cos(x) = -16cos(x)(sin(x) +1)

The product is zero where the factors are zero, at x=π/2 and x=3π/2.

These are the turning points, where the function changes from decreasing to increasing and vice versa.

(sin(x)+1) is non-negative everywhere, so the sign of the derivative is the opposite of the sign of the cosine function. This tells us the function f(x) is increasing on the interval (π/2, 3π/2), and decreasing elsewhere (except where the derivative is zero).

The function local extrema will be where the derivative is zero, so at f(π/2) (minimum) and f(3π/2) (maximum). We already know that cos(x) is zero there, so the extremes match those of -16sin(x).

4 0
4 years ago
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