8 answers
·
10 hours ago

Best answer:
(a + 1/a) = 10
(a + 1/a)^2 = 10^2
a^2 + 2 * a * (1/a) + 1/a^2 = 100
a^2 + 2 * 1 + 1/a^2 = 100
a^2 + 1/a^2 = 100 - 2
a^2 + 1/a^2 = 98
Or we could solve for a to begin with and work from there
a + 1/a = 10
a^2 + 1 = 10a
a^2 - 10a = -1
a^2 - 10a + 25 = 25 - 1
(a - 5)^2 = 24
a - 5 = +/- 2 * sqrt(6)
a = 5 +/- 2 *...
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5 answers
·
13 hours ago

17 answers
·
3 days ago

5 answers
·
2 days ago

Length of door itself: 143.5cm
Width of door itself: 68.5cm
Finding: Angle that the door needs to be on to fit into the doorway. (the door will be a parallelogram)

16 answers
·
3 days ago

17 answers
·
4 days ago

10 answers
·
2 days ago

Best answer:
C
119.99 + ((230 - 100) X 0.31)
119.99 + 40.30 = 160.29

9 answers
·
1 day ago

How do I integrate ∫(dx/(8+3x))
I have a general idea, u-substitution... My final answer gets pretty close, but isn't exact to the right answer. Someone people help me a (desperate student)!!! thanks, much appreciated!

10 answers
·
2 days ago

9 answers
·
2 days ago

7 answers
·
15 hours ago

Best answer:
Solve 0.5e^0.92t=0?
I doubt it.
~Peanuts2345

7 answers
·
19 hours ago

11 answers
·
3 days ago

5 answers
·
4 days ago

Evaluate the following function at the values t + 2 and t + h.
g(t) = 3t^3 - 7t
g(t+2)=?
g(t+h)=?

6 answers
·
21 hours ago

Best answer:
(a) (see graph below)
----------------------------------
(b) Solve for 7^2x − 4(7^x) + 3 = 0
7²ˣ − 4(7ˣ) + 3 = 0.............[1]
// Let u = 7ˣ and rewrite [1] in terms of u
// and solve for u
u² - 4u + 3 = 0
.....(u-3)(u-1) = 0
.....u = 3, 1
// Now back-substitute u = 7ˣ and solve for x
When u = 3,
.....3 =...
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7 answers
·
2 days ago

Best answer:
Multiply the diameter of the circle by 22/7 to get the circumference of the circle.The formula is 2*22/7 *radius of the circle.

8 answers
·
2 days ago

Best answer:
Just square it to see:
x = 3√5 - 2√2
x² = (3√5 - 2√2)(3√5 - 2√2)
x² = (3√5)² - 2(3√5)(2√2) + (2√2)²
x² = 9*5 - 12√10 + 4*2
x² = 45 - 12√10 + 8
x² = 53 - 12√10

6 answers
·
23 hours ago

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