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1 year ago

L E N 4 8 1 O k M What is the value of k? k=

Mathematics

1 answer:

s2008m [1.1K]1 year ago

6 0

Answer: 2

Step-by-step explanation:

By the geometric mean theorem,

$\sqrt{8k}=4\\\\8k=16\\\\k=\boxed{2}$

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Lincoln, Nebraska lies directly North of Dallas, Texas. Lincoln is at a latitude of 40.5

vfiekz [6]

Answer:

The angular speed of a point on Earth is

π12

radian per hour. The Equator lies on a circle of radius approximately 4000 miles. Find the linear velocity, in miles per hour, of a point on the Equator.

Step-by-step explanation:

7 0

3 years ago

Show how to make ten to solve 13-7. Write in a number sentence. _-_-_-_-_=_

ser-zykov [4K]

Answer: The answer is 6.

The number sentence is

3-3=0

10-4=6

So, 13-7=6

Step-by-step explanation:

To solve $13-7$ , by making ten

First break 13 and write $13=10+3$

Then break 7 as $7=3+4$

Now to subtract 7 from 13,

Step 1. Subtract 3 (a part of 7), from 3(a part of 13) or cross 3 circles, then we have left 10-4

$13-7=10+3-(3+4)=10+3-3-4=10-4$

Step 2. Subtract 4 from 10 or cross 4 circles out of 10, we get 6.

The answer is 6.

5 0

3 years ago

Read 2 more answers

Solve x^2-3=0 using a quadratic equation

anzhelika [568]

Answer:

I think the answers are 3 & 0 .

Step-by-step explanation:

Good luck .

3 0

2 years ago

If the legs of a right triangle are x, (2x - 1) and its hypotenuse is (2x + 1), what is the value of x?

Ber [7]

Answer:

x=8

Step-by-step explanation:

(2x + 1)² = x² + (2x - 1)² = x² + (2x - 1)(2x - 1)

(2x + 1)(2x + 1) = x² + 4x²-2x-2x+1

4x²+2x+2x+1 = 5x²-4x+1

4x²+4x+1 = 5x²-4x+1

0= 5x²-4x²-4x-4x+1-1

0= x²-8x

x²-8x=0

x²=8x

x=8

3 0

3 years ago

Partial fraction decomposition<br> 20x+9/25x^2+20x+4

ozzi

Step-by-step explanation:

We have

$\frac{20x + 9}{25 {x}^{2} + 20x + 4 }$

Let's factor the denomiator first,

the denomaitor is a perfect square so we get

$\frac{20x + 9}{(5x + 2) {}^{2} }$

Now, we must think of two fractions that

$\frac{a}{(5x + 2) {}^{2} } + \frac{b}{5x + 2}$

We use a perfect square term for one fraction, then a linear one for the next, because if we set both of the denomiator to the same factor, we would get a inconsistent system.

So right now, we have

$\frac{a}{(5x + 2) { }^{2} } + \frac{b}{5x + 2} = \frac{20x +9 }{25 {x}^{2} + 20x + 4 }$