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JulsSmile [24]
4 years ago
15

For all values of x. which expression is equivalent to (3x + 2) + 2(3x +2)

Mathematics
1 answer:
iris [78.8K]4 years ago
3 0

Answer:

9x+6

Step-by-step explanation:

(3x+2)+2(3x+2)

3x+2+6x+4

9x+6

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Write (-3+3i)^3 in trigonometric form
adell [148]
The answer is 54+54 I
6 0
3 years ago
For these types of formatted integrals, why can’t we use the basic integral formula to calculate it?
IrinaVladis [17]

Step-by-step explanation:

The problem asks to calculate the integral by using area of geometric shapes, but it is possible to integrate using trig substitution.

∫₀³ √(9 − x²) dx

If x = 3 sin u, then dx = 3 cos u du.

When x = 0, u = 0.  When x = 3, u = π/2.

∫₀ᵖⁱ`² √(9 − 9 sin²u) (3 cos u du)

∫₀ᵖⁱ`² 3 √(1 − sin²u) (3 cos u du)

∫₀ᵖⁱ`² 3 cos u (3 cos u du)

∫₀ᵖⁱ`² 9 cos²u du

Use power reduction formula.

9/2 ∫₀ᵖⁱ`² (cos(2u) + 1) du

9/2 ∫₀ᵖⁱ`² cos(2u) du + 9/2 ∫₀ᵖⁱ`² du

9/4 ∫₀ᵖⁱ`² 2 cos(2u) du + 9/2 ∫₀ᵖⁱ`² du

[ 9/4 sin(2u) + 9/2 u ] |₀ᵖⁱ`²

[ 9/4 sin(π) + 9/2 (π/2) ] − [ 9/4 sin(0) + 9/2 (0) ]

9π/4

Using geometry instead, the function is the top half of a circle centered at the origin with a radius of 3.  The limits are 0 ≤ x ≤ 3, so we're looking at the first quadrant only.  So the area is:

A = πr² / 4

A = π (3)² / 4

A = 9π/4

7 0
4 years ago
Read 2 more answers
Find the x - and y -intercepts of the graph of the function f(x)=−4|x−3|+12 .
Marina86 [1]

The x and y-intercept(s) of the graph of the function f(x)=−4|x−3|+12 are: ( 0, 0 ), ( 6, 0 ) and ( 0, 0 ) respectively.

<h3>What are the x and y -intercepts of the graph of the function f(x)=−4|x−3|+12 ?</h3>

Given the function;

f(x) = −4| x-3 | + 12

First, we find the x-intercepts by simply substituting 0 for y and solve for x.

f(x) = −4| x-3 | + 12

y = −4| x-3 | + 12

0 = −4| x-3 | + 12

−4| x-3 | + 12 = 0

−4| x-3 | = -12

Divide both sides by -4

| x-3 | = 3

We remove the absolute value sign

x - 3 = ±3

x = 3±3

x = 3-3, 3+3

x = 0, 3

Hence, x-intercepts are: ( 0, 0 ), ( 6, 0 )

Next, we find the y-intercept by substituting 0 for x and solve for y.

f(x) = −4| x-3 | + 12

y = −4| 0-3 | + 12

y = −4| -3 | + 12

We remove the absolute value sign

y = −4(3) + 12

y = −12 + 12

y = 0

Hence, y-intercept is: ( 0, 0 ).

The x and y-intercept(s) of the graph of the function f(x)=−4|x−3|+12 are: ( 0, 0 ), ( 6, 0 ) and ( 0, 0 ) respectively.

Learn more about graph functions here: brainly.com/question/28105390

#SPJ1

5 0
2 years ago
Can anyone help here?
a_sh-v [17]

The answer for 25 is B

Step-by-step explanation:

Minus the sum for both sides and you will get the number in the middle

4 0
3 years ago
What is the slope of the line between (−4, 4) and (−1, −2)? i got -3??????? which isn't an answer.
kolbaska11 [484]
Slope is defined as the change in y divided by the change in x between two points. Slope = y2 - y1/x2 - x1 -2 - 4/ -1 - (-4) -6/3 -2 Hope this helps!
8 0
3 years ago
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