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astraxan [27]
2 years ago
10

30. 9, -27, 81, -243, ... Find the next number

Mathematics
1 answer:
agasfer [191]2 years ago
7 0

Answer:

729

Step-by-step explanation:

<u><em>Write the recursive formula through the pattern:</em></u>

<u><em /></u>a_{n+1}=-3a_{n}

<u><em>Find terms of sequence through 9, -27, 81, -243 :</em></u>

729

<em>I hope this helps you</em>

<em>:)</em>

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What are the solutions of the quadratic equation 49x^2=9?
Flauer [41]
<span>Simplifying 49x^2 + -9 = 0
Reorder the terms: -9 + 49x^2 = 0
Solving -9 + 49x^2 = 0 Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '9' to each side of the equation. -9 + 9 + 49x^2 = 0 + 9
Combine like terms: -9 + 9 = 0 0 + 49x^2 = 0 + 9 49x^2 = 0 + 9
Combine like terms: 0 + 9 = 9 49x^2 = 9
Divide each side by '49'. x^2 = 0.1836734694
Simplifying x^2 = 0.1836734694
Take the square root of each side: x = {-0.428571429, 0.428571429}

hope this helps!!</span>
5 0
3 years ago
NEED HELP FAST:
Irina-Kira [14]

Answer:

B- 5 5/6

Step-by-step explanation:

35 divided by 6 is 5 meaning there are 5 whole numbers in the fraction you then figure out how many 6 the remaining amount is which in this case is 5 so the answer is 5 5/6 hope this helps!

6 0
3 years ago
Use your calculator to find the approximate volume in cubic units of the solid created when the region under the curve y = sec(x
Naily [24]

Answer:

idk Sorry :\

Step-by-step explanation:

6 0
3 years ago
Shannon graphed the system of equations.
ehidna [41]
All you need to do is plug -5 into the second equation and you see it is near (-5, -8). When plugged into the top, you get (-5, -27/4) which comes out to ABOUT -6.75 for the Y value. The closest is actually a tie. The first option is .8 from the first and .45 from the second leading in a total distance of 1.25. The second, which is the fellow answer, is 1.2 from the first and .05 from the second, leading to 1.25 away.

The third, which is next closest is 1.8 from the first and .55 from the second leading to a distance of over 2 from the optimal, so only the first two are answers.
3 0
3 years ago
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A line has a slope of 3 and a y-intercept of 5. What is it’s equation in slope-intercept form? Write your answer using integers,
Vinil7 [7]
Y=mx+b, m= slope, b= y intercept, plug in. Y=3x+5
7 0
3 years ago
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