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KATRIN_1 [288]
3 years ago
9

A number added to 8 times that numbers reciprical is 6, find the number

Mathematics
1 answer:
castortr0y [4]3 years ago
8 0
Call your unknown number x.  The reciprocal would be1/xYou are supposed to add your unknown number to 8 times its reciprocal, orx+8(1/x)This is all supposed to equal 6, so you havex+8/x=6
Solve for x to get your number.
n + 8(1/n) = 6n^2 + 8 = 6nn^2 - 6n + 8 = 0(n - 4)(n - 2) = 0n = 2, 4
So 2 and 4 both are answers in my opinion.
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2 years ago
Find the intervals of increase and decrease for (x+2)^3-3x-2
Tanzania [10]

(-∞,-4.196)∪(-4.196,-3)∪(-3,-1)∪(-1,0)∪(0,∞)

4 0
3 years ago
Determine if events A and B are independent.
trapecia [35]

Answer:

B) Independent

Step-by-step explanation:

Independent events:

Two events, A and B are independent, if:

P(A \cap B) = P(A) \times P(B)

In this question:

P(A \cap B) = \frac{63}{200}

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6 0
3 years ago
Q.Take out the area of the trapezium.<br>Parallel sides-15,23<br>Non parallel sides-10,8​
Dmitriy789 [7]

Answer:

Step-by-step explanation:

Area of a trapezium is the average of the parallel sides times the distance between them.

If we subtract 15 units from each of the parallel sides, we end up with a triangle that has two sides of 8 units and one of 10 units. One of the 8 unit sides is the base and we need to find the height h which is perpendicular to this base.

Let the base be split into two segments, call one A, the other will be 8 - A

From Pythagoras.

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10² - A² = 8² - (8 - A)²

100 - A² = 64 - (64 - 16A + A²)

100 - A² = 64 - 64 + 16A - A²

     100  =  16A

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h = √(10² - 6.25²)

h = √60.9375  

A = ½(15 + 23)√60.9375  

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3 0
3 years ago
Read 2 more answers
How the heck you solve this<br> 38=k/50
Scorpion4ik [409]

Answer:

1900 = k

Step-by-step explanation:

38=k/50

Multiply each side by 50

50 *38 = k/50 *50

1900 = k

5 0
3 years ago
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