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Tatiana [17]
3 years ago
11

What is a correct expansion of (3x + 2)(3x^2 + 4)

Mathematics
1 answer:
worty [1.4K]3 years ago
3 0
It would be 9x^3+6x^2+12x+8

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A circle has diameter 18 inches, and a chord is 14 inches long. What is the distance in inches from the chord to the center of t
Mazyrski [523]

Answer:

Let O be the center of a circle whose radius is r cm , in which AB= 14 cm long

cord is at a distanceof 24 cm from O. Draw a perpendicular OD on AB , thus ,

OD= 24 cm.

In right angled triangle. ODB

OB^2 = OD^2+ DB^2

r^2 =(24)^2+(AB/2)^2 = 576+(14/2)^2

r^2 = 576+ 49=625

r = √625. =25 cm. Answer.

7 0
2 years ago
Perform the indicated operation 1. (12 + 3) - 7 = N
lubasha [3.4K]

Answer:

N = 8

Step-by-step explanation:

(12 + 3) - 7 = N

=> N = (12 + 3) - 7

=> N = 15 - 7

=> N = 8

8 0
2 years ago
What’s the place value of 9 in 987,164
Art [367]
Hello

The place value is 9 hundred thousand or 900,000

Hope this helps
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6 0
3 years ago
Read 2 more answers
Write and simplify the integral that gives the arc length of the following curve on the given interval b. If necessary, use tech
LiRa [457]

Answer:

L = 4.103

Step-by-step explanation:

we have length of curve

L = \int\limits^b_a {\sqrt{(f'(x))²+1} } \, dx

where f(x) = d/dx(3*in(x)) = 3/x

substituting for f(x), we have L = \int\limits^5_2 {\sqrt{(3/x)²+1} } \, dx

(since the limit is 2≤ x ≤5)

solving,  L = \int\limits^5_2 {\sqrt{9/x²+1} } \, dx

Simplifying this integral, we have

L = 4.10321

8 0
3 years ago
A line has a slope of zero Which of the following points could this line pass through
Rina8888 [55]

Answer:

B

Step-by-step explanation:

m(slope) = y2 - y1 / x2 - x1

-6 - - 6 / 7 - 3

= 0 / 4 = 0

3 0
2 years ago
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